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Some aspects of water filtering activity of filter-feeders. https://www.researchgate.net/publication/226902807; Hydrobiologia. Vol. 542.

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Ostroumov S.A. Some aspects of water filtering activity of filter-feeders. - Hydrobiologia 2005. 542(1): 275-286. January 2005; https://www.researchgate.net/publication/226902807; DOI: 10.1007/s10750-004-1875-1; On the basis of the previous publications, our new data and the existing scientific literature, we have formulated some fundamental principles that characterize the pivotal roles of the biodiversity of filter-feeders in ecosystems. Among those roles are: (1) the role of ecological repair of water quality, (2) the role of contributing to reliability and stability of the functioning of the ecosystem, (3) the role of contributing to creation of habitat heterogeneity, (4) the role of contributing to acceleration of migration of chemical elements. It is an important feature of the biomachinery of filter-feeders that it removes from water various particles of a very broad range of sizes. Another important principle is that the amount of the organic matter filtered out of water is larger than the amount assimilated so that a significant part of the removed material serves no useful function to the organism of the filter-feeder, but serves a beneficial function to some other species and to the ecosystem as a whole. The new experiments by the author additionally demonstrated a vulnerability of the filtration activity of filter feeders (e.g., bivalves and rotifers) to some xenobiotics (tetradecyltrymethylammonium bromide, heavy metals and some others). The inhibition of the filtration activity of filter-feeders may lead to the situation previously described as that of an ecological bomb of the second type.

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... Filter feeders increase the transparency and water quality by removing suspended particles. They form an important link between dissolved and suspended solids and the higher levels of the food chain, contributing to nutrient cycling and regulation of the metabolism of freshwater ecosystems (Ostroumov, 2005). Any loss of filter feeders caused by the introduction of environmental contaminants, allochthonous species or by removal of suitable habitats, seriously threatens the functioning and stability of freshwater environments (Ostroumov, 2002a(Ostroumov, , b, 2003a. ...
... Published data are available on filtering activity of several and different benthic filter-feeders (Ostroumov, 2005). CRs have been expressed in terms of volume of cleared water, rather than the amount of food particles ingested in a given 33.9 ± 7.0 21.5 ± 16.8 50.3 ± 13.3 56.5 ± 11.7 35.9 ± 28.0 83.9 ± 22.1 T. volvocina -16.8 ± 0.9 18.5 ± 13.0 -28.0 ± 1.5 30.8 ± 21.6 R gr (ng L À1 h À1 ), CR (ml ind À1 h À1 ). ...
... Not determined (-). time (Ostroumov, 2005). For example, CR was 5-30 ml animal À1 h À1 for some rotifers, 4.7-10.2 ...
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Bryozoans are sessile filter feeding organisms able to play an important role in the cycling of organic matter in freshwater ecosystems. However, the quality and quantity of food particles ingested by bryozoans are still not well-known. Therefore, an experimental design was performed in order to investigate the clearance rate (CR), food selection and efficiency of assimilation by the freshwater bryozoan species Plumatella geimermassardi. P. geimermassardi was collected from the Colfiorito Marsh (Umbrian Natural Park, Italy), during summer. A higher grazing rate of suspended and dissolved solids was evidenced in the colonies collected in June, July, than in August. Food selection and assimilation of phytoplankton were determined. The algal species ingested as diet food item and those excreted with the faecal pellets were taxonomically identified. The results provide new information on CR and food selection by P. geimermassardi and enhance knowledge on its biology. Insights on feeding preferences by bryozoan species can provide valid information about their feasible distribution and abundance.
... 2. Новые факты, полученные в опытах, согласуются с теоретическими представлениями о полифункциональной роли биоты в самоочищении воды [6,[20][21][22][23][24] и о типологии вещества в биосфере [7][8][9][10]. Изложенные новые факты поддерживают выводы, сделанные в предыдущих статьях [33][34][35][36][37][38], подчеркивают актуальность исследований в области экотоксикологии и химико-биотических взаимодействий с участием токсичных веществ [5, 39 -44]. ...
... 1. Положение В.И.Вернадского о роли живого вещества как геологической силы, влияющей на лик Земли. Анализируя современное развитие этой концепции, можно отметить следующее: это положение детализировано, подтверждено и усилено на новом эмпирическом материале, в том числе фактами о водных экосистемах и организмах, полученных автором и систематизированных в теории самоочищения воды [6,20,21,23,24,[35][36][37][38]. В частности, это положение усилено новыми фактами в области водной экологии и их обобщением в теории полифункциональной роль организмов в самоочищении воды [6,20,21,23,24,[35][36][37][38] 2. Концепция В.И.Вернадского -биогенная миграция элементов. ...
... Анализируя современное развитие этой концепции, можно отметить следующее: это положение детализировано, подтверждено и усилено на новом эмпирическом материале, в том числе фактами о водных экосистемах и организмах, полученных автором и систематизированных в теории самоочищения воды [6,20,21,23,24,[35][36][37][38]. В частности, это положение усилено новыми фактами в области водной экологии и их обобщением в теории полифункциональной роль организмов в самоочищении воды [6,20,21,23,24,[35][36][37][38] 2. Концепция В.И.Вернадского -биогенная миграция элементов. Предложенный анализ с учетом экспериментов автора и данных литературы ведет к дополнению этой концепции. ...
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ОСТРОУМОВ С.А. Современное развитие некоторых идей В. И. Вернадского. // Известия Самарского научного центра Российской академии наук. 2013. Т. 15, № 3, с.17-22. https://www.researchgate.net/publication/301625114
... Reef building suspension feeding bivalves, such as mussels and oysters, are both allogenic and autogenic ecosystem engineers. As allogenic engineer they remove large quantities of suspended material from the water column by filter feeding and producing fecal and pseudofecal biodeposits that accumulate in the reef and its surroundings (Newell, 2004;Ostroumov, 2005;Ulanowicz and Tuttle, 1992;van Leeuwen et al., 2010). As autogenic engineers, their three-dimensional reef structure increases habitat heterogeneity and complexity in soft-sediment environments, increasing species diversity and abundance (Gutiérrez et al., 2003;Meyer and Townsend, 2000;Peterson et al., 2003). ...
... Epibenthic bivalves (oysters, mussels) are both allogenic and autogenic ecosystem engineers according to the definitions of Jones et al. (1994). As individuals they act as allogenic engineers enhancing benthic-pelagic coupling by their strong filter feeding capacity, removing large quantities of suspended material from the water column and producing fecal and pseudofecal biodeposits that accumulate in the reef and its surroundings (Newell, 2004;Ostroumov, 2005;Ulanowicz and Tuttle, 1992;van Leeuwen et al., 2010). In high densities epibenthic bivalves are autogenic engineers, creating three-dimensional reef structures that increases habitat heterogeneity and complexity in soft-sediment environments, that promote both species diversity and abundance (Gutiérrez et al., 2003;Meyer and Townsend, 2000;Peterson et al., 2003;Zee et al., 2012). ...
... Since oysters provide many different ecosystem services, oyster reefs are restored or constructed for many different reasons. They can be restored to improve the overall water quality, as they enhance benthic-pelagic coupling by their strong filter feeding capacity, contributing to water purification (Newell, 2004;Ostroumov, 2005;Ulanowicz and Tuttle, 1992;van Leeuwen et al., 2010). As their three-dimensional reef structure increases habitat heterogeneity and complexity in soft-sediment environments (Gutiérrez et al., 2003;Meyer and Townsend, 2000;Peterson et al., 2003;Zee et al., 2012), reefs can be used to increase local biodiversity and act as a nursery area for fish and crustaceans. ...
Thesis
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In het afgelopen decennium is er een verschuiving gaande naar een meer ecosysteem gebaseerde kustverdediging met integratie van natuurlijke verdedigingsstructuren zoals duinen, mangroves, schorren, zeegras bedden, schelpdier- en koraalriffen. Deze soorten staan bekend als biobouwers. Het toepassen van natuurlijke verdedigingsstructuren vereist kennis over: waar deze habitats erosie verminderen en bescherming bieden; evenals ecologische gegevens, zoals soortafhankelijke habitatseisen, levenscyclus, populatiedynamiek en lange-termijn persistentie. Dit laatste kan gebruikt worden om plaatsen te identificeren waar habitats succesvol geïmplementeerd kunnen worden. Intergetijdengebieden en oesterriffen zijn bestudeerd in de Oosterschelde, welke dient als modelsysteem. In dit systeem eroderen getijdengebieden in een rap tempo als gevolg van significante wijzigingen aan het Oosterschelde bekken door de Deltawerken
... Pollution may be of particular concern for habitat forming species because they comprise many coastal systems, hold great biodiversity and regulate many ecological and biochemical processes (Bruno and Bertness, 2001;Christie et al., 2009;Vaughn, 2018). Bivalve filter feeders, for instance, play important roles in different processes of marine ecosystems such as nutrient cycling and benthic-pelagic coupling (Norkko et al., 2001;Ostroumov, 2005b;Atkinson et al., 2013;Vaughn and Hoellein, 2018). Bivalves, such as oysters and mussels, act as natural water purifiers by removing suspended material and contaminants from the water column (Ostroumov, 2005a;Ostroumov, 2005b). ...
... Bivalve filter feeders, for instance, play important roles in different processes of marine ecosystems such as nutrient cycling and benthic-pelagic coupling (Norkko et al., 2001;Ostroumov, 2005b;Atkinson et al., 2013;Vaughn and Hoellein, 2018). Bivalves, such as oysters and mussels, act as natural water purifiers by removing suspended material and contaminants from the water column (Ostroumov, 2005a;Ostroumov, 2005b). They also influence the structure of planktonic communities (Gili and Coma, 1998), by feeding on the suspended material (phytoplankton, zooplankton, organic material), and transfer energy/nutrients to the benthos via biodeposition (e.g. ...
Article
Fast urbanization in coastal areas has increased the load of contaminants entering estuaries worldwide, threatening the diversity and provision of services by these important systems. Contamination causes structural changes in ecosystems, but the consequences for their functioning are still overlooked. Here we investigated filtration and biodeposition rates of the mussel Mytilaster solisianus across different concentrations of metals, nutrients and suspended material, and levels of urbanization. As expected, filtration rates increased with the number of particles in the water column. However, in areas with low particle concentration, filtering increased in mussels with higher metal concentrations (Cu/Zn/Ni), which were, in turn, related to high urbanization. Similarly, biodeposition rates were positively related to metal concentration in mussels. The increased functional responses observed here is likely a symptom of stress, caused by potential compensatory mechanisms to the energetic costs of cell maintenance and body detoxification of mussels, rather than an indication of healthy systems/organisms. Capsule: Increased functional responses of mussels can be a sign of environmental stress.
... Vernadsky emphasized the importance of studying migration of chemical elements in the biosphere and relations between the activity of living matter and the physicochemical characteristics of the biosphere [5][6][7]74], as well as the importance of various ways of the influence of living matter on the environment. Data on the chemistry of the biosphere [3,4,[15][16][17], geochemical environment, and factors affecting the concentrations of chemical chemical elements [3, 4, 15-22, 25-47, 55, 67, 72-74], migration of elements and biogeochemical flows in the biosphere [67,22,28,30], and self-purification of the environment from chemical pollutants [28,[63][64][65][66][67][68][69] rapidly accumulate. The new data require additional analysis, so that it is necessary to formulate appropriate generalizations. ...
... The useful role of living organisms in detoxification of the environment can be traced through the example of aquatic ecosystems. In our previous publications, a comprehensive mechanism of water purification in freshwater and marine ecosystems has been discovered and detailed to some extent [28,[63][64][65][67][68][69]. In these studies, attention was paid to the multifunctional role of biota and the entire biological community [63,64]. ...
Article
Article: Ostroumov S.A., New Aspects of the Role of Organisms and Detritus in the Detoxification System of the Biosphere. Russian Journal of General Chemistry, 2017, Vol. 87, No. 13, pp. 3190–3198. https://www.researchgate.net/publication/322861119 ; © Pleiades Publishing, Ltd., 2017. ISSN 1070-3632, Original Russian Text © S.A. Ostroumov, 2017, published in Ekologicheskaya Khimiya, 2017, Vol. 26, No. 3, pp. 165–174. New Aspects of the Role of Organisms and Detritus in the Detoxification System of the Biosphere; S. A. Ostroumov; Faculty of Biology, Moscow State University, Moscow, 119991 Russia; Received September 25, 2016; Abstract— This article presents the recent author's discovery of new aspects of the participation of organisms in the detoxification system of the biosphere. Problems of detoxification of toxic environmental pollutants are analyzed. New author’s experimental data in combination with a large amount of information in the scientific literature gave rise to a new concept of the role of biogenic detritus and related nutrients in environmental detoxification (ex-living matter concept). This may be useful for the development of new technologies for remediation and decontamination of the environment. Keywords: biosphere, detoxification, pollution control, toxic chemical elements, immobilization, sorption, biogenic detritus, ex-living matter; INTRODUCTION. Study of the problem of detoxification of harmful substances in the biosphere is closely related to several areas of environmental chemistry. Many authors studied problems of migration and cycling of chemical elements in the biosphere [1–3], elemental composition of environmental objects [2–22] and other aspects of biosphere chemistry [18–49], and the role of organisms in the formation of certain chemical parameters of the habitat [5–7, 15–17, 50–79]. Studies of the chemical– biotic interactions [11, 12, 14–22, 25–47, 55, 67, 72– 75, 78–80] and accumulation of a large amount of information on the geochemical environment (see, e.g., [14–17, 21, 23, 47, 55, 73, 75, 80]) have revealed some unresolved issues, which leads to the need to reexamine the question of how organisms are involved in the transformation and detoxification of habitats. It is interesting to analyze how toxic chemical elements are neutralized in the biosphere during natural ecological and biogeochemical processes. New important relevant data are actively accumulating in experimental studies conducted in the laboratory of biogeochemistry of the environment of the Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences [15, 16], as well as in many laboratories of the world [81, 82]. V.I. Vernadsky emphasized the importance of studying migration of chemical elements in the biosphere and relations between the activity of living matter and the physicochemical characteristics of the biosphere [5–7, 74], as well as the importance of various ways of the influence of living matter on the environment. Data on the chemistry of the biosphere [3, 4, 15–17], geochemical environment, and factors affecting the concentrations of chemical chemical elements [3, 4, 15–22, 25–47, 55, 67, 72–74], migration of elements and biogeochemical flows in the biosphere [67, 22, 28, 30], and self-purification of the environment from chemical pollutants [28, 63–69] rapidly accumulate. The new data require additional analysis, so that it is necessary to formulate appropriate generalizations. The objective of this analysis is to consider the role of organisms and substances derived therefrom (biogenic detritus and other detritus-like substances) in the detoxification system of the biosphere with account taken of our data. It is necessary to distinguish two aspects of the problem under study: (1) The role of living organisms during their vital activity; (2) The role of biogenic detritus and related substances of biological origin which were referred to ... DOI: 10.1134/S1070363217130138;
... Ключевые слова: биосфера, детоксикация, контроль загрязнения, токсичные химические элементы, иммобилизация, сорбция, биогенный детрит вещества и физико-химическими характеристиками биосферы [5][6][7]74], подчеркивал важность различных способов воздействий живого вещества на окружающую природу, говоря современным языком, на окружающую среду. Имеет место быстрое накопление данных о химизме биосферы [3,4,[15][16][17], геохимической среде и факторах, воздействующих на концентрации химических элементов [3, 4, 15-22, 25-47, 55, 67, 72-74], на миграцию элементов и биогеохимические потоки в биосфере [67,22,28,30], на самоочищение (selfpurification) среды от химических загрязняющих веществ [28,[63][64][65][66][67][68][69]. Накопление новых фактов ведет к необходимости дополнительного анализа этих данных. ...
... Полезная роль живых организмов в детоксикации среды обитания может быть прослежена на примере водных экосистем. В наших предыдущих публикациях был выявлен и в определенной степени детализирован комплексный механизм очищения воды в пресноводных (freshwater) и морских (marine) экосистемах (например, [28,[63][64][65][67][68][69]). ...
Article
С. А. Остроумов. Новые аспекты роли организмов и детрита в детоксицирующей системе биосферы // Экологическая химия 2017, 26(6); 301–311. https://www.researchgate.net/publication/321149781; New Aspects of the Role of Organisms and Detritus in the Detoxification System of the Biosphere. Ecological Chemistry. Ekologicheskaya Khimiya. https://www.researchgate.net/publication/321149781; Abstract. Аннотация на русском языке, аннотация на английском языке. НОВЫЕ АСПЕКТЫ РОЛИ ОРГАНИЗМОВ И ДЕТРИТА В ДЕТОКСИЦИРУЮЩЕЙ СИСТЕМЕ БИОСФЕРЫ С. А. Остроумов* Московский государственный университет им. М.В. Ломоносова, биологический факультет, Москва, 119991 Россия; *e-mail: ostroumov@mail.bio.msu.ru; Поступило в редакцию 25 сентября 2016 г.; В обзоре освещены новые стороны участия организмов в детоксицирующей системе биосферы. Анализируются вопросы детоксикации токсичных загрязнителей окружающей среды. Новые экспериментальные данные автора, а также большой объем информации в научной литературе ведет к детализации представлений о существенной роли биогенного детрита и связанных с ними биогенных веществ в детоксикации окружающей среды. Этот вывод может быть полезным при разработке новых технологий ремедиации и очищения загрязненных компонентов окружающей среды. Ключевые слова: биосфера, детоксикация, контроль загрязнения, токсичные химические элементы, иммобилизация, сорбция, биогенный детрит, бывшее живое вещество, БЖВ, ELM; ** Abstract in English: New Aspects of the Role of Organisms and Detritus in the Detoxification System of the Biosphere S. А. Ostroumov* Lomonosov Moscow State University, Moscow, Russia *e-mail: ostroumov@mail.bio.msu.ru Abstract―In this review, the role of organisms in the detoxification system of the biosphere is revisited. The issues of detoxification of toxic environmental pollutants are analyzed. This analysis of the new experimental data of the author as well as a large body of information in the scientific literature led to some new concepts on a substantial role of biogenic detritus and related biogenic substances in detoxification of the environment. This conclusion could be helpful in developing new technologies of remediation of polluted components of the environment. The author originated a new typology of functional types of matter (chemical substances) in the biosphere. This typology includes the three functional types of matter, namely: (1) living matter (biomass); (2) ex-living matter (ELM); (3) non-living matter (no-living matter, non-alive matter). The new term “ex- living matter” (ELM) was coined by the author in his publications in 2011–2012. The ecological and biospheric role of the new functional type of matter, namely, ex-living matter (ELM) is analyzed in this review paper on the basis of the author’s experiments and the related data from international scientific literature. Keywords: biosphere, detoxification, pollution control, toxic chemical elements, immobilization, sorption, biogenic detritus
... Filtering activity is often so high, that the complete volume of many water bodies is turned over in short time (OSTROUMOV 2005), e.g. a maximum filter feeding capacity of 770 millilitres (ml) filtered water per gram (g) per minute (min) was detected for Xenopus laevis tadpoles (VIERTEL 1992). SEALE (1980) reported that tadpoles are able to reduce natural eutrophication by reducing rates of primary production, i.e. tadpoles reduce nitrogen input into the aquatic system by cutting down the biomass of nitrogen-fixing blue-green algae and by exporting nitrogen assimilates from the aquatic to the terrestrial environment via metamorphosis. ...
... Filter feeding tadpoles are able to ingest particles between 0.126 WASSERSUG SEALE 1980). The filtering activity of many filter feeders is so profound, that the whole water volume of a given water body is filtered within some days (OSTROUMOV 2005). VIERTEL (1992) reported a maximum filter feeding capacity of 850 ml filtered water per 30 minutes per gram for tadpoles of Xenopus laevis (at stage 28 according to GOSNER 1960). ...
Thesis
Amphibien sind global von einem Artenrückgang betroffen, wobei Ausbeutung bestimmter Froscharten einer der Gründe hierfür ist. Die vorliegende Arbeit gibt erstmals Einblick in Form, Umfang und Auswirkungen der extensiven Nutzung von Fröschen in Westafrika. Interviews mit Konsumenten und in den Froschhandel Involvierten ermöglichten die Nutzung und den Handel von Fröschen in Burkina Faso, Benin und Nigeria zu quantifizieren und zu bewerten. Während der Froschhandel in Burkina Faso eher auf lokaler Ebene abläuft, ließ sich im Norden Benins und in Nigeria ein intensiver grenzüberschreitender Handel nachweisen. Um einen möglichen anthropogenen Einfluss auf natürliche Amphibien Gemeinschaften zu ermitteln wurden natürliche Gewässer untersucht. Auf Kaulquappenebene wurden Artenverluste und die sich daraus ergebenen Konsequenzen studiert. Temporäre Savannengewässer wurden in zwei Untersuchungsgebieten in Burkina Faso untersucht, wobei die Gewässer jeweils in Gebieten mit unterschiedlichem Störungsgrad lagen: in Dörfern mit Froschfang, gegenüber in geschützten Gebieten mit Froschfangverbot. Generell konnte in den anthropogen gestörten Gebieten ein niedrigerer Artenreichtum mit gleichzeitig veränderter Zusammensetzung der Artengemeinschaften konstatiert werden. Für diese Unterschiede waren primär anthropogen veränderte Habitatfaktoren verantwortlich. Aber auch das Froschfangen kann Grund für veränderte Kaulquappengemeinschaften sein. Um Voraussagen für mögliche resultierende Konsequenzen treffen zu können ist es wichtig die ökologische Rolle betroffener Arten im System zu kennen. In künstlichen Gewässern wurde die trophische Position von vier Kaulquappenarten mit jeweils unterschiedlicher Nahrungsstrategie und die Konsequenzen ihres Verlustes für die restlichen Kaulquappen und bestimmter Ökosystemfaktoren, wie Moskitolarven, ermittelt. Die vier Kaulquappenarten unterschieden sich in ihrer trophischen Position. Zudem konnten komplexe Interaktionen zwischen den vier Fokusarten aufgedeckt werden, wobei die trophische Position je nach Gemeinschaft wechseln konnte. So konnte ich mit meiner Arbeit zeigen, dass der Verlust nur einer Art essentielle Konsequenzen für Amphibien Gemeinschaften und ökosystemische Prozesse haben kann. Chapter 1 Summary II I
... -RUSSIAN JOURNAL OF ECOLOGY, 2005, 36 (6): 414-420. 7. New concepts and terminology: ecological tax; ecological repair of water quality. ...
... Also, a review paper. [7]. www.scribd.com/doc/44105992 ...
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25 Innovations in environmental science including aquatic ecology; https://www.researchgate.net/publication/279175142; DOI 10.13140/RG.2.1.4418.8886;
... L'alimentació dels suspensívors bentònics pot tenir un impacte pronunciat sobre el pasturatge de fitoplàncton a moltes zones marines on les taxes de filtració de la població són nor-malment de 1-10 m 3 per m 2 de comunitat, o més, corresponents a un volum que pot ser diverses vegades el de la columna d'aigua (Ostroumov, 2005). La comprensió de la dieta natural d'algunes espècies i de com aquesta dieta varia, tant amb els canvis en la disponibilitat de la columna d'aigua com amb els canvis en les condicions hidrodinàmiques, suggereix que aquestes comunitats bentòniques poden tenir un paper regulador important en l'ecosistema (Gili i Coma, 1998). ...
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En els darrers anys s’ha fet evident el paper primordial dels organismes marins sèssils en els processos de transferència d’energia en els ecosistemes litorals i de plataforma. Molts dels coneguts com a suspensívors bentònics empren com a font alimentària la «fracció fina» de la matèria en suspensió o microplàncton, i això podria ser important per entendre l’èxit d’aquests organismes en diverses localitzacions del planeta. A causa de la seva gran abundància, les comunitats de suspensívors capturen elevades quantitats de partícules i poden regular directament la producció primària, regulant alhora indirectament la producció secundària a les cadenes alimentàries del litoral i de plataforma. Aquest article se centra principalment a revisar la informació disponible relacionada amb les funcions que realitzen els suspensívors bentònics a lescomunitats litorals i de plataforma, i en destaca la rellevància ecològica. Paraules clau: suspensívor, bentònic, sèssil, sèston, transferència d’energia.
... Bioturbation was assessed using the motility category 'burrow' which included active and tube burrowers. 'Active filter feeding' mode was used as a proxy of nutrient cycling due to the high volume of water that active filters process, taking nutrients from the water column and making them available to the benthos (Ostroumov, 2005;Riisgård & Larsen, 2000). To assess the habitat provision function, taxa within trait categories medium and large for 'maximum adult size', sessile for 'motility', and patchy and highly aggregated for 'degree of contagion' were selected (excluding the Orders Actiniaria, Brisingida and Euryalida) and their biomass combined. ...
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Aim To characterize the functional diversity and selected ecological functions of marine epibenthic invertebrate communities at the ecosystem scale and to evaluate the relative contributions of environmental filtering, including bottom‐contact fishing, and competitive interactions to benthic community assembly. Location Flemish Cap, an ecosystem production unit and fishing bank in the high seas of the north‐west Atlantic Ocean. Methods Through the use of Hierarchical Modelling of Species Communities (HMSC), we have explored seven community response traits to the environment applied to 105 epibenthic species and evaluated the influence of such traits on the community assembly processes. Assumed bioturbation, nutrient cycling and habitat provision functions, linked to individual or a combination of biological traits, were mapped using random forest modelling. Results Functional richness within benthic communities reached an asymptote for trawl sets with roughly more than 30 species. Assemblages on top of the Flemish Cap (<500 m depth) were characterized by higher biomass of small‐ and medium‐sized species with short life spans, whereas large species with longer life spans and broadcast spawners were dominant in the deeper assemblages (500–1,500 m depth). The amount of variation explained by the species’ responses to the covariates mediated by the traits was relatively high (25%) indicating their relevance to community assembly. Community‐weighted mean trait values changed with depth and physical oceanographic variables, indicating that environmental filtering was occurring. Interspecific interactions, as inferred from the random effect at the sample level, accounted for 16.3% of the variance in the model, while fishing effort explained only 5.2% of the variance but conferred strong negative impacts for most species. Main conclusions Our results suggest that while bottom‐contact fishing impacts have an effect on functional diversity, changes to the physical oceanography of the system are likely to have more profound impacts. The maps of benthic functioning can aid assessments of ecosystem impacts of fishing.
... The gradual increase in environmental eutrophication resulting from mariculture effluents represents a major issue imposing an urgent need to mitigate this negative impact to the marine ecosystem [24,25]. Bioremediation represents a valid solution, particularly in integrated multi-trophic aquaculture systems, where bioremediator organisms are employed providing the final self-purification [5], and transforming the wastes into useful biomass [2]. In the present study, we utilized an integrated bioremediation approach to realize an IMTA system involving polychaetes and macroalgae reared/cultivated in association with fish cages, achieving, for both organisms, consistent amounts of biomass, and opening several other interesting new horizons. ...
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Aquaculture expansion is limited by the negative environmental impact of the waste and the need for alternative sources in the diet of reared fish. In this framework, for the first time, the survival rates, biomass gain, and fatty acid profiles of the polychaete Sabella spallanzanii and the macroalga Chaetomorpha linum, reared/cultivated as bioremediators in an integrated multitrophic aquaculture system (IMTA), were evaluated for their potential reuse applications. Results showed that these organisms represent a natural source of omega-3 and omega-6. On account of the overall results and the high biomass obtained as by-products, a preliminary study was performed employing both S. spallanzanii and C. linum as new dietary ingredients to feed different sized Dicentrarchus labrax. Fish survival rate, biomass growth, and specific growth rate were determined resulting in no significant differences between control and treated fishes. Histological analyses showed no alterations of the stomach tunica mucosa and submucosa in treated fishes. The eco-friendly approaches applied in the here-realized IMTA system could guarantee the achievement of sustainable by-products represented by the bioremediators S. spallanzanii and C. linum, as well as their reliability as a natural source of compounds beneficial to fish and human health.
... Biodiversity seems to have a minor effect on the biomass of sessile communities, although high richness values can lead to a consistent increase in variability of community properties and resistance and recovery to disturbance or invasion (Stachowicz et al., 2007). In sessile communities, filter-feeders can have a major role in controlling many ecological processes, since their action improves water quality, contributing to both stability and resilience, enhancing habitat heterogeneity and accelerating the migration of chemical elements (Ostroumov, 2005). ...
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Filter feeding invertebrates are a relevant component of fouling assemblages with a pivotal role in ecological processes, since they improve water quality, enhance habitat heterogeneity and transfer organic matter from the water column to the benthos. They modulate the availability of resources to other species, with effects on the density and behavior of the surrounding macrofauna. The fanworm Sabella spallanzanii, one of the largest and most abundant Mediterranean filter feeders, provides a shelter for predation and a secondary substrate for algae and settlement for sessile invertebrates. We tested its role in driving the structure of fouling assemblages, through a removal experiment. The experiment was one-year-long, with four sampling times. The effect of the removal on the fouling community was marginal in terms of species richness and evenness, while the biomass showed important differences, with a constant increase over time with higher values in the samples containing S. spallanzanii. At the end of observations, the biomass reached the value of 3917 g DW m-2 in controls and 2073 g DW m-2 in treatments. The empty space left by fanworms was not used by other species with similar biomasses. It is possible that the functioning of fouling communities may, in the event of loss of species, fluctuate in terms of biomass mobilization to different compartments, either towards the pelagic compartment or to the detritus chain. In systems with reduced water turnover, this by-pass can have important consequences in terms of stability and ecological balance.
... The international catch of marine molluscs in 2004 was 2.05 million tons, of which 50% consisted of M. edulis, representing 6% of all aquaculture production (FAO, 2006). In addition, mussels also provide an important habitat for other invertebrates and algae (Seed, 1996) increasing local biodiversity as well as performing a range of other important ecosystem functions in their role as filter feeders (Ostroumov, 2005), by increasing primary productivity (Pfister, 2007) and nutrient cycling (Prins and Smaal, 1994). The common mussel, M. edulis, is also considered to be an important item in the food web since they are preyed upon by many species including the red king crab Paralithodes camtschaticus (Sokolov and Milyutin, 2006), and the asteroid starfish Asterias vulgaris (O'Neill et al., 1983). ...
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This study has investigated the effect of salinity and temperature on the rates of uptake of Cd and Zn by the blue mussel Mytilus edulis under laboratory conditions. Exposure of mussels to concentrations of 2 ppm resulted in an almost linear increase in the concentration of Cd and Zn throughout 14 days of exposure. Only the whole soft tissue of each mussel was frozen, freeze-dried and acid-digested before measuring the level of contamination by the spectrophotometer. Zn uptake was interrupted by elimination periods at high salinity. The uptake of Cd by M. edulis was at its maximum at low salinity and high temperature while at high salinity, temperature did not significantly affect the rate of uptake. Salinity had a significant effect on Zn uptake with the rate of uptake being higher at low salinity. Mortalities of mussels exposed to Cd and Zn along with controls were only observed at low salinity.
... Bivalves play a significant role in linking the mangrove detritus at the base of the food web to higher consumers of the trophic level (Mascaro and Seed 2001). Their filtering activities ecologically repair the water quality of the environment (Ostroumov 2005). Many mangrove bivalves are edible (Sotto and von Cosel 1981;Hamli et al. 2012) hence consumed as food by humans. ...
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The Visayas, Philippines has vast mangrove areas in which various species of bivalves inhabit. The ecological and economic importance of mangrove bivalves merits its protection and conservation. Information update on the species composition and fisheries of these organisms is vital for management. Gleaning site and market surveys were done in selected cities and municipalities in the region. A total of 22 species of mangrove bivalves were observed from the study sites. Polymesoda erosa, P. expansa, Anodontia edentula, Azorinus acutidens and Gafrarium pectinatum were common in all areas. This suggests that these species are the most commercially exploited in the region. Generally, bivalve gleaning in Visayan mangroves is a secondary source of income. The CPUE and IPUE ranged from 3-10 kg operation-1 and Php 10-80 kg-1 , respectively. The time of operation ranged from 2-8 hrs, depending on the duration of the low tide and the elevation of the mangrove area. It appeared that the mangrove bi-valve fishery in the Visayas is a productive economic activity and thus present the risk of overexploitation. Hence, regulation of the fishery to attain sustainability is recommended.
... This difference becomes more distinct after 12, 18 and 22 months, with the extensive development of bryozoans, sponges, oysters, bivalves, and barnacles, mainly on the ECO panels. These organisms are known as filter feeders that have the ability to remove various particles of a broad range of sizes from the water column, with a significant part of the removed material serving no useful function to the filter-feeder itself, but benefit the ecosystem as a whole (Ostroumov 2005). As mentioned, another benefit of these developing communities arises from biogenic buildup of ecosystem engineers providing the structure with bioprotection (Risinger 2012; Coombes et al., 2013Coombes et al., , 2015Coombes et al., , 2016. ...
... The same series is observed in the effect of the studied SAS on the survival rate of E. vittatus. The increased aggressiveness of SAS was also reported by (Ostroumov, 2005;Ostroumov and Solomonova, 2013). ...
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The dependence between the time of escape of Eulimnogammarus vittatus from light and toxicants in the medium has been studied. It has been shown that these amphipods display the most rapid response to light in pure Baikal water. Toxicants slow down the movement of E. vittatus in the dark. A similar effect has been observed during the experiments with heavy metals, detergents, and petroleum products. The results indicate a good prospect for using this reaction as a test response during the biological assay of toxic contamination with the help of E. vittatus.
... Therefore, these filter-feeders assist in providing water clarity by removing particulates from the water column (Jørgensen, 1966;Petersen and Svane, 2001). These filtration services directly contribute to improve water quality (Ostroumov, 2005) to avoid harmful algal blooms, fish kills, beach closures, and oxygen depletion (Peterson et al., 2006;Worm et al., 2006). The filter-feeders with powerful water filtration mechanisms may potentially affect the levels of the bacterioplankton, and consequently the relationship between bacteria and benthic filter feeders may be functionally important to aquatic ecosystems (Cavallo et al., 2009;Kautsky, 1981;Prins et al., 1998;. ...
Article
We investigated and compared, by laboratory experiments, the filter-feeding activity on bacteria by the solitary ascidian Styela plicata and the colonial ascidian Polyandrocarpa zorritensis. Clearance rates and retention efficiencies were estimated by using, as only food source, the bacterial species Vibrio alginolyticus selected on account of its importance in aquaculture pathogenicity. The Cmax was 1.4 ± 0.17 L h− 1 g− 1 DW for S. plicata and 1.745 L h− 1 g− 1 DW for P. zorritensis. The highest retention efficiency was 41% corresponding to a removed bacterial biomass of 16.34 + 1.71 μgCL− 1 g− 1 DW for P. zorritensis and 81% corresponding to a bacterial biomass of 32.28 + 2.15 μgCL− 1 g− 1 DW for S. plicata. Styela plicata resulted higher efficient than P. zorritensis in removing V. alginolyticus from seawater in experimental tanks, thus representing a more suitable biofilter to restore the quality of microbiologically contaminated waters including those where aquaculture is practiced. Present laboratory experiments represent the first contribution to the comparison of the filtration activity of the two ascidians, as well as to characterize the filtration process on bacterioplankton and pone the basis for future field works aimed to restore bacteriological polluted seawater.
... Jordan and Valiela (1982) found that ribbed mussels in a New England salt marsh filtered 1.8 times as much particulate nitrogen as was exported from the salt marsh and hypothesized that retention of nitrogen by mussels may enhance the productivity of the marsh. This ability to retain nitrogen also has the potential to mitigate eutrophication, defined by Nixon (1995) as an increase in the rate of supply of organic matter to an ecosystem that is related to human activities, thereby improving water quality (Ostroumov 2005;Coen et al. 2007;Lindahl and Kollberg 2009;Manganaro et al. 2009). The loss of bivalves and their ecological services in coastal and estuarine ecosystems can result in the same ecological effects as eutrophication (Kemp et al. 2005;Heck and Valentine 2007). ...
... Such a phenomenon, coupled with the static conditions of the experimental procedure, might explain why vibrios, heterotrophic bacteria at 22°C, bacteria culturable at 37°C, total coliforms and E. coli densities were not significantly between Ti 1 and Ti 2 . On the other hand, it is well known the ability of filter feeders in regulating their pumping rates and even stop filtering, according to physiological and/or behavioural needs (Frost 1980;Kilian 1952;Ostroumov 2005;Ostroumov and Widdows 2006;Simpson 1984). By contrast, this trend was not always recorded for sponges, presumably due the high efficiency of H. perlevis pump/filter system within the 24 h and with the employed bacterial load. ...
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Production of polychlorinated biphenyls (PCB) was banned in the US in 1970s. However, susceptible populations especially those living at/around the contaminated sites continue to be at a risk of elevated exposure to PCBs because information about the contamination (of the environment) and its associated health risks may not reach these populations. A recent study found the second highest concentration of PCBs ever recorded worldwide in the sediment samples of Guánica Bay, located in the southwestern part of Puerto Rico. PCB levels in fish from the bay were also higher than the tolerance limit of Food and Drug Administration (FDA), which motivated this research to initiate a school-based campaign to bring community awareness about the contamination of the bay and engage students in preventive strategies to reduce their exposure to PCBs. Surveys before and after the campaign were administered in the high school as well as in the communities of Guánica Municipality. The analyses of the survey data suggest that the campaign was effective in bringing awareness among schoolchildren (6.6% before versus 69.7% after the campaign; χ² ~ 60.4; p < 0.001) and strategies to reduce PCB exposure and its toxicity such as removing adipose tissues from seafood/fish and exercising. In the community, there was a significant decline in the consumption of seafood/fish harvested from the bay after the campaign (54.6% before versus 33% after the campaign; χ² ~ 10.85; p < 0.001). However, the awareness did not result in significant behavior modifications among schoolchildren, such as avoiding swimming and fishing in the bay. Given hazardous levels of PCBs and some students use the bay for various purposes, including one-third of community members still use seafood/fish harvested from the bay, attention of different stakeholders is warranted for clean-up efforts as well as engaging children and communities in PCB exposure avoidance strategies.
... Marine mollusks include familiar and economically important groups such as snails, octopuses, squid, scallops, oysters, mussels, and clams. Oysters, mussels, and other filter-feeding mollusks provide vital ecological services by improving water quality and clarity for other aquatic life (Dame et al. 1984;Ostroumov 2005;Beck et al. 2009). Squid, scallops, and oysters are a key food source for humans and in some areas may constitute a large part of commercial fishery harvests. ...
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В данной статье приведены аспекты внедрения альтернативных и возобновляемых источников энергии в Азербайджане. Рассмотрена перспектива внедрения нетрадиционных запасов страны в энергосекторе. Указана необходимость скорейшего перехода к новой - неуглеродной энергетики будущего, независимой от конечных ресурсов природы. Ключевые слова : традиционные и нетрадиционные запасы, энергосбережения, альтернативные и возобновляемые источники энергии, перспективы применения АВИЭ.
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The association between the angiotensin‑converting enzyme (ACE) insertion/deletion (I/D) gene polymorphism and the risk of diabetes mellitus developing in the Azerbaijan population is not studied yet. Therefore, the aim of the present study was to investigate the association of ACE I/D gene polymorphism and the risk of developing diabetes in Azerbaijan population. A total of 200 individual consisting of 100 control subjects and 100 patients with diabetes mellitus (28 patients I type DM (11 male and 17 female); 72 patients II type DM (21 male and 51 female)) were recruited. DNA was extracted from the blood samples. Genotyping of ACE I/D gene polymorphism done by PCR and mistyping of the II and DD genotypes was conducted with an insertion/deletion‑specific primer. The genotyping frequency for the II, ID and DD polymorphism of the ACE gene ID=63, DD=36, II=1 in case subjects. The genotyping frequency for the II, ID and DD polymorphism of the ACE gene in control group: ID=49, DD=26, II=25. The frequency for the D allele is 67.5 and the frequency of I allele is 32.5 in case group. The frequency for the D allele is 50.5 and the frequency of I allele is 49.5 in control group. The dominant and recessive models revealed alleles on separate groups and at the population level: DD:DR=13.6; ID:IR=15; ID:DD=0.35; DD:ID= 2.97; DR: IR=3.26; IR:DR=0.3. Based on the results, D allele showed significant association with risk of disease. This finding revealed the association of I/D polymorphism with risk of diabetes. However, further studies with larger sample size are necessary to confirm the association of the I/D polymorphism of the ACE gene and diabetes mellitus in Azerbaijan population.
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В работе представлены структура, диагностические особенности и результаты лечения злокачественных новообразований (ЗН) детей первого года жизни. Проведен ретроспективный анализ 170 детей в возрасте от 0 до 12 месяцев с различными ЗН, с 2015 по 2019 гг.в условиях НЦПДХ. У детей первого года жизни солидные опухоли составили 76%, гемобластозы — 24%, из которых 53% были дети с ОМЛ, 45% с ОЛЛ, с ХМЛ 2%. Различные транслокации выявлены у 11% детей с острым лейкозом, среди которых реаранжировки гена MLL выявлены в 64% случаев острого лимфобластного лейкоза Наличие амплификации N-mic пациентов с нейробластомами составили 20%. Общая выживаемость детей с солидными опухолями детей до 1 года составил 70%, Процент выживаемости детей с гемобластозами составил 46%. Ключевые слова: злокачественные новообразования, дети до 1 года
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Foundation species have strong, positive effects on local community structure; increasing biodiversity and species abundances by providing food and habitat. On coastal temperate and subpolar rocky reefs, canopy-forming kelps form three-dimensional habitats that support numerous fish, invertebrate, and algal species. Throughout the Aleutian Archipelago, unregulated sea urchin grazing has largely removed the foundation canopy-forming kelp, Eualaria fistulosa, and most subcanopy algae. Consequently, most nearshore rocky reefs have shifted from kelp to sea urchin (Strongylocentrotus spp.) dominated habitats. These latter habitats are either urchin barrens devoid of all fleshy macroalgae, or transition forests devoid of all fleshy macroalgae algae but E. fistulosa. These three distinct communities (kelp and transition forests, and urchin barrens) were used to test the influence of E. fistulosa and sea urchins on the associated communities. Contrary to initial expectations, in transition forest habitats where E. fistulosa is the lone macroalga, no differences in community structure or in the size structure of benthic invertebrates were seen relative to urchin barrens. In kelp forests, where E. fistulosa coexisted with subcanopy macroalgae and urchins were less abundant, faunal communities were more species rich with higher abundance, biomass, and percent cover of numerous filter feeders. These findings stress not only the strong negative impact which urchins can exert on the kelp forest communities, but also the context-dependent nature of foundation species.
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تضمنت الدراسة الحالية جزئين : الجزء الأول هو تقييم كفاءة محطة حمدان لمعالجة مياه الصرف الصحي في مدينة البصرة, عن طريق جمع عينات المياه فصلياً وإجراء بعض التحاليل الفيزيائية والكيميائية من ثلاثة مواقع, الأول (حوض التجميع الخارجي) والثاني (حوض الترسيب الابتدائي) والثالث (حوض الترسيب الثانوي) . أما الجزء الثاني فقد تناول تطبيق نظامين من المعالجة الحيوية Bioremediation على مياه الصرف الصحي المعالج أولياً والذي تم جمعه من أحواض الترسيب الابتدائي لمحطة حمدان, هما نظام المعالجة النباتية Phytoremediation بتطبيق نظام الجريان السطحي الحر (FWS) وباستعمال نوعين من النباتات هما نبات القصب Phragmites australis (Cav.) Trin.ex Steud ونبات الجولان Schoenoplectus litoralis (Schrader) Palla, Bot. Jahrb. Syst. ولمدة ستة أسابيع. ونظام المعالجة الحيوانية Zooremediation باستعمال نوعين من القشريات هما Artemia franciscana (Kellogg, 1906) و Arctodiaptomus (Rhabdodiaptomus) salinus (Daday, 1885) ولمدة ثمانية أسابيع .
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Садчиков А.П., Остроумов С.А. Совершенствование методологии при изучении гетеротрофной активности водорослей и бактерий. Ecological Studies, Hazards, Solutions. 2018. Vol.25. P. 153-160. https://www.researchgate.net/publication/332753797
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Садчиков А.П., Остроумов С.А. Методические аспекты изучения продукционно-деструкционных процессов в водных экосистемах // Ecological Studies, Hazards, Solutions. 2018. Vol.25. P.139-146.
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Садчиков А.П., Остроумов С.А. Потребление низкомолекулярного органического вещества водорослями и бактериями (на примере мезотрофной экосистемы). Ecological Studies, Hazards, Solutions. 2018. Vol.25. P.146-153. https://www.researchgate.net/publication/332753709 ;
Book
Ecological and biological systems / Ed. by S. A. Ostroumov et al. – Moscow : MAKS Press, 2018. – 200 p. ( Ecological Studies, Hazards, Solutions. Volume 25). https://www.researchgate.net/publication/331714769 ; ISBN 978-5-317-06080-0; Volume 25 of the series includes the proceedings of the scientific conferences ‘Ecological and Biological Systems’ that took place under the aegis of a section of the MOIP (Moscow Society of Nature Researchers) on 24th May 2018, and some other scientific and educational materials. The authors represent Moscow State University and other institutions and universities of Russia, and other countries. The volume is of interest to scientists in the fields of ecology, limnology, oceanography, zoology, botany, microbiology, environmental science (including biogeochemistry and geochemistry), as well as to university professors and educators. Languages of contributions: English, Russian, Chinese. ** Экологические и биологические системы / Отв. ред. С. А. Остроумов и др. – Москва : МАКС Пресс, 2018. – 200 с. – (Ecological Studies, Hazards, Solutions. Volume 25). ISBN 978-5-317-06080-0; Выпуск содержит труды научной конференции «Экологические и биологиче- ские системы», которая прошла под эгидой секции МОИП 24 мая 2018 года и дру- гие научные и учебно-методические материалы. Авторы – сотрудники МГУ, уче- ные других университетов и институтов России и других стран. Издание представ- ляет интерес для специалистов в области экологии, гидробиологии, океанологии, зоологии, микробиологии, наук об окружающей среде, а также для преподавателей высшей школы. Языки материалов сборника: русский, английский, китайский. Предисловие академика В. Н. Большакова.
Data
Big list of links. Part 2. Environmental science. https://www.researchgate.net/publication/328879832 ; ** Response of test-organisms to water pollution with quaternary ammonia compounds Ostroumov, S.A. (Moscow State University) http://5bio5.blogspot.com/2013/01/response-of-test-organisms-to-water.html ** Russians respectable in Harvard. University library: biology, chemistry, environmental_science, conservation. Available: http://5bio5.blogspot.com/2013/01/books-of-russian-scientists-in-library.html ** Technology of protection of climate and environment will be based on ecological research. A new concept was proposed by S. Ostroumov, Moscow University: ** and lots of other links.
Data
Big list of links. Part 1. Environmental science. E.g.: Response of test-organisms to water pollution with quaternary ammonia compounds Ostroumov, S.A. (Moscow State University) http://5bio5.blogspot.com/2013/01/response-of-test-organisms-to-water.html ** Russians respectable in Harvard. University library: biology, chemistry, environmental_science, conservation. Available: http://5bio5.blogspot.com/2013/01/books-of-russian-scientists-in-library.html ** Technology of protection of climate and environment will be based on ecological research. A new concept was proposed by S. Ostroumov, Moscow University: ** and lots of others.
Data
Big list of links. Part 3. Environmental science. https://www.researchgate.net/publication/328879513 ; ** http://5bio5.blogspot.com/2013/02/question-that-were-answered-in-book.html ** Questions that were answered in the book 'Biological Effects of Surfactants' http://5bio5.blogspot.com/2013/02/question-that-were-answered-in-book.html ** Biological effects of surfactants. Book:useful, innovative. environmental, toxicology, testing, hazards detergents, http://5bio5.blogspot.com/2013/02/biological-effects-of-surfactants.html ** British Library,Cambridge,Imperial College,Leeds,Natl Libr Scotland,Oxford,TrinityCollege,Dublin, Book on surfactants. Available: http://5bio5.blogspot.com/2013/02/ecotoxicology-british-library-cambridge.html ** Biological effects of surfactants.Book environmental, toxicology,bioassay, testing hazards detergents surfactants ** and lots of other links...
Article
Chinese translation of the article. It was transated from English into Chinese, Title:On Studying the Hazards of Pollution of the Biosphere: Effects of Sodium Dodecylsulfate (SDS) on Planktonic Filter-Feeders; 中文(标题):研究生物圈的污染危害:十二烷基硫酸钠(SDS)的影响,对滤食性浮游动物的影响; https://www.researchgate.net/publication/259402821; Full reference of the English article: Vorozhun I. M., Ostroumov S. A. On studying the hazards of pollution of the biosphere: effects of sodium dodecylsulfate (SDS) on planktonic filter-feeders. - Doklady Biological Sciences, 2009, Vol. 425, pp. 133–134. ISSN 0012-4966. DOI: 10.1134/S0012496609020136; Full English text online: https://www.researchgate.net/publication/216175249 Translator: Ben Chen; Major:Ecology; University: SZ-BIT-MSU; Pargraph1: Many species of planktonic and benthic invertebrates are active filter-feeders. 中文:许多种类的浮游无脊椎动物和底栖无脊椎动物都是活性滤食性动物。 The filtration activity of aquaticorganisms is of great importance for the functioning of ecosystems [1-3]. 中文:水生生物的过滤活性对生态系统的功能至关重要[1-3]。 It was shown earlier that surfactant sodium dodecylsulfate (SDS) inhibits the filtration activity of Mytilus edulis, M. galloprovincialis, and some other aquatic filter-feeders [4-15], which is manifested in a decreased removal of suspensions from water by these organisms. 中文:之前已经有研究表明,表面活性剂十二烷基硫酸钠(SDS)抑制了紫贻贝(Mytilus edulis, M. galloprovincialis),和一些其他水生滤食性动物的过滤活性[4-15],表现为这些生物体从水中除去悬浮液的减少。 Similarly to other water pollutants, surfactants have a strong anthropogenic impact on ecosystems [14]. 中文:与其他水污染物类似,表面活性剂对生态系统具有强烈的人为影响[14]. Paragraph 2: 5. The goal of this study was to test whether SDS has an inhibitory effect on the ability of planktonic filter- feeders Daphnia magna to remove phytoplankton from water during their filtration activity. 中文:本研究的目的是检测SDS是否具有抑制浮游滤食性大型水蚤(Daphnia magna)去除水体中浮 游植物的能力。 6. Experiments were performed with five-day-old D. magna approximately 1 mm in size at an age of five days. 中文:实验是以五天大的大约1毫米大小的水蚤(D. magna)进行的。 7. Before the beginning of the experiment, daphnia were kept under laboratory conditions in vessels and fed with phytoplankton (green algae Scenedesmus quadricauda (Turp.) Breb.) at a low concentration (at most 50 thousand cells/ml). 中文:在实验开始之前,(水蚤)在实验室条件下保存在容器中,并用浮游植物喂食。(四尾栅藻)(green algae Scenedesmus quadricauda (Turp.) Breb.)在低浓度下最多5万个细胞/毫升) 8. At the beginning of the experiment, S. quadricauda cells were added at a higher concentration (400 thousand cells/ ml). 中文:实验开始时,栅藻细胞(S. quadricauda cells)在较高浓度下加入(400万个细胞/毫升)。 9. In the control variant, daphnia were incubated in an SDS-free medium. 中文:在控制变量中,水蚤在无SDS培养基中孵育 10. In the experimental variants, the incubation medium contained SDS at preliminarily selected concentrations (0.1, 0.5, 1, 5, and 10 mg/l). 中文:在实验的变量,培养基中SDS预先选定的浓度是(0.1, 0.5, 1, 5, and 10 mg/l) 11.The concentration of S. quadricauda cells was determined in a Nageotte counting chamber at a depth of 0.5 mm 3, 6, 9, 12, and 24 h after the beginning of the experiment. 中文:在计数板的深度在0.5毫米处分别在实验开始后的3, 6, 9、12,24小时确定栅藻细胞(S. quadricauda cells)浓度。 12. Each vessel contained 50 ml of water medium and 25 daphnia. 中文:每个容器含有50毫升的水介质和25个水蚤。 13. Incubation was performed at 24± 1.5°C. Each variant was performed in duplicate. 中文:每个样品都在24 ±1.5°C中孵育,并且重复执行 Paragraph 3. 14.The rate of food consumption (algae removal from water) by one daphnia (R) was calculated by conventional formula : R=(V(K0-Kt))/Nt 中文:用常规公式计算一只水蚤的食物消耗率(R):R=(V(K0-Kt))/Nt 15.where R is the mean rate of algae removal from water by one daphnia in 1 h in the considered time interval; V is the vessel volume, ml; 中文:其中R是指间隔的1小时内水蚤从水中去除藻类的平均速率;v是容器容积(毫升)。 16. K0 and Kt are the concentrations of algal cells at the beginning and end of experiment; 中文:K0和KT分别是指实验开始时和结束时藻细胞的浓度。 17. N is the number of daphnia in vessel; and t is the duration of experiment, h. 中文: N是导管内水蚤的数量;t是实验的持续时间(小时)。 Paragraph 4: 18. The results of experiments showed that the concentration of S. quadricauda cells gradually decreased with time (table). 中文:实验结果表明,栅藻细胞(S. quadricauda cells)浓度随时间逐渐下降。 19. This indicates that daphnia removed algal cells from water as a result of its filtration. 中文:这表明水蚤通过过滤去除水中的藻类细胞。 20. The concentration of algal cells decreased both in the control and at certain SDS concentrations (0.1, 0.5, 1, 5, and 10 mg/l). 中文:藻细胞浓度在对照组和SDS浓度下均降低。(0.1, 0.5, 1, 5, and 10 mg/l) Paragraph 5. 21. After incubation for 3 h in the presence of SDS at all concentrations studied (0.1 mg/Land higher), the number of algal cells was higher than in the control, indicating that the filtration rate and efficiency of algae removal from water decreased. 中文:分别对有SDS的样品(浓度为0.1 mg/L和以上)孵育3 h后,藻细胞数量高于对照组,表明藻类去除率和去除效率均下降。 Paragraph 6: 22. After filtration for 6–24 h in the presence of SDS at concentrations 5 and 10 mg/l, the abundance of S. quadricauda cells was higher than in the control. 中文:样品中SDS浓度为5和10毫克/升,经过6–24 h的过滤,栅藻细胞(S. quadricauda cells)丰度明显高于对照组。 23. At lower SDS concentrations (0.1, 0.5, and 1 mg/l), differences in the abundance of algal cells relative to the control were observed after 3 h of incubation and disappeared after 6–24 h of incubation. 中文:在较低的SDS浓度(0.1,0.5和1mg / l)下,孵育3小时后观察到栅藻细胞相对于对照物的差异,孵育6-24小时后消 Paragraph 7: 24. The calculation of the mean rate of algae removal by daphnia (R) showed that this parameter decreased in the first 3 h after the beginning of incubation in the presence of SDS. 中文:通过水蚤(R)计算平均藻类去除率显示,该参数在SDS存在之后的孵育开始3小时后降低。 25. R calculated after incubation for 3 h in the control (0 mg/ml SDS) was 74.4X〖10〗^3cells per one daphnia per 1 h; this value was taken as 100%. 中文:在对照(0mg / ml SDS)中孵育3小时后计算的R一个水蚤每1小时为74.4×〖10〗^3 澡细胞; 该值视为100%。 26. After incubation in the presence of 0.1 mg/l SDS, R decreased to 42.7X〖10〗^3 cells/ml (approximately (57.2% of the control). 中文:在0.1mg / L SDS存在下孵育后,R降至42.7 X〖10〗^3个细胞/ Ml (该值大约是对照组的57.2%) Table. Concentration of algae S. quadricauda cells in vessels with daphnia D. magna containing different concentrations of SDS (mg/l) 中文:在含有水蚤不同浓度SDS的试管中栅藻细胞(S. quadricauda cells)的浓度(毫克 /升) Incubation time,h孵育时间,小时 Number of cells in 1Ml (ml), x〖10〗^6(每毫升细胞数量) 0(control)对照 0.1 0.5 1 5 10 0 0.40 0.40 0.40 0.40 0.40 0.40 3 0.29 0.34 0.36 0.36 0.36 0.36 6 0.24 0.24 0.24 0.24 0.28 0.32 9 0.20 0.20 0.20 0.20 0.24 0.28 12 0.16 0.16 0.16 0.16 0.20 0.24 24 0.04 0.04 0.04 0.04 0.08 0.12 27. When SDS concentration was increased to 0.5 mg/L, R decreased by more than 60% relative to the control and reached 74.4 X〖 10〗^3 cells per one daphnia per 1 h (35.7%). 中文:当SDS浓度增加至0.5mg /L时,R相对于对照降低60%以上,一个水蚤每1h达到74.4 *〖10〗^3个藻细胞。(35.7%)。 Paragraph 8. 28. Importantly, we did not observe any increase in the mortality rate of daphnia within 3 days of incubation in the presence of SDS at the concentrations studied. 中文:重要的是,我们没有观察到在所研究的浓度下,SDS存在下孵化3天内水蚤的死亡率有任何增加。 29. Thus, the described effects were observed at sub-lethal concentrations of SDS. 中文:因此,我们将所观察到的影响称作SDS的亚致死浓度. Paragraph 9. 30.The results of this study are consistent with data obtained for other filter-feeders, including the results of our earlier studies of the effect of SDS on the filtration activity of M. edulis, M. galloprovincialis, and other filter-feeders [5,8,14,15]. 中文:这项研究的结果是获得其他滤食性动物的数据一致,包括我们早期关于SDS对贻贝(M. edulis, M. galloprovincialis)过滤活动,和其他滤食性动物效果的研究[5,8,14,15]。 Paragraph10. 31.The toxicological hazard of SDS is apparently determined by the membranotropic effect of this compound, which belongs to the group of anionic surfactants [14]. 中文:SDS的毒理学危害显然由本化合物的膜效应决定,该化合物属于阴离子表面活性剂[14]。 Paragraph 11. 32. Thus, the results of our experiments demonstrated that SDS decreases the rate of water filtration by the planktonic crustaceans D. magna, which is expressed in a decrease in the consumption of food and algae removal from water. 中文:因此,我们的实验结果表明,SDS降低了浮游甲壳类动物(crustaceans D. magna)的水过滤速率,其表现为食物(浮游植物)和从水中藻类消耗量的减少. Paragraph12. 33. The results of this study are important for understanding the hazard associated with anthropogenic disturbances of environmental processes 中文:这项研究的结果对于了解人为干扰环境过程的危害。 34. Essential for self-purification of water and biogeochemical fluxes of elements in aquatic ecosystems. 中文:对水生态系统中元素的生物地球化学的变化和水体的自净能力尤其重要。 Paragraph13. ACKNOWLEDGMENTS 35. We are grateful to A.F. Alimov for his comments and discussion of some questions considered in this study. 中文:我们非常感激A.F. Alimov对这项研究中几个问题进行评论和探讨。 REFERENCES 1. Alimov, A.F., Tr. Zool. Inst. AN SSSR, 1981, vol. 96, p. 248. 2. Sushchenya, L.M., Kolichestvennye zakonomernosti pitaniya rakoobraznykh (Quantitative Patterns and Nutrition of Crustaceans), Minsk: Nauka i Tekhnika, 1975. 3. Ostroumov, S.A., Suspension-Feeders as Factors Influencing Water Quality in Aquatic Ecosystems. In: The Comparative Roles of Suspension-Feeders in Ecosystems, Dordrecht: Springer, 2004, pp. 147–164. https://www.researchgate.net/publication/226658106; 4. Ostroumov, S.A., On the Biotic Self-purification of Aquatic Ecosystems: Elements of the Theory. Doklady Biological Sciences, V.396, 2004, p.206–211. https://www.researchgate.net/publication/259335499; [translated from the Russian version: Dokl. Akad. Nauk, 2004, vol. 396, no. 1, pp. 136–141]. 5. Ostroumov, S.A., Usp. Sovrem. Biol., 2004, vol. 124, no. 5, pp. 429–442. Ostroumov, S.A., [Biologicheskii mekhanizm samoochishcheniya v prirodnykh vodoemakh i vodotokakh: teoriya i praktika, Uspekhi Sovremennoi Biol, 2004, vol. 124, no.5, pp. 429–442; Остроумов С.А. Биологический механизм самоочищения в природных водоемах и водотоках: теория и приложения // Успехи современной биологии. 2004. Т. 124. №5. С. 429-442. Полный текст онлайн, in Russian: https://www.researchgate.net/publication/269764796; ] 6. Otkrytie novogo vida opasnykh antropogennykh vozdeistvii v ekologii zhivotnykh i biosfere: ingibirovanie fil’tratsionnoi aktivnosti mollyuskov poverkhnostno- aktivnymi veshchestvami (Discovery of a New Type of Dangerous Anthropogenic Impact in Animal Ecology and the Biosphere: Inhibition of the Filtration Activity of Mollusks by Surfactants), Dobrovol’skii, G.V., Rozenberg, G.S,, and Toderash, I.K, Eds., Moscow: MAKS- Press, 2008. 7. Nauchnye otkrytiya. Sbornik kratkikh opisanii nauchnykh otkrytii-2005 (Scientific Discoveries: Selected Brief Descriptions of Scientific Discoveries 2005) Kuznetsov, O.L., Ed., Moscow: Mezhdunarodnaya Akademiya Avtorov Nauchnykh Otkrytii i Izobretenii, 2006, pp. 5–8 (Discovery Certificate no. 274). 8. Ostroumov, S.A., Inhibitory analysis of top-down control: New keys to studying eutrophication, algal blooms, and water self-purification. Hydrobiologia, 2002, vol. 469, pp. 117–129. https://www.researchgate.net/publication/200587396; 9. Ostroumov, S.A., Polyfunctional role of biodiversity in processes leading to water purification: current conceptualizations and concluding remarks.- Hydrobiologia, 2002, 469: 203-204. DOI: 10.1023/A:1015555022737; https://www.researchgate.net/publication/200582742; 10. Ostroumov, S.A., Biological filtering and ecological machinery for self-purification and bioremediation in aquatic ecosystems: towards a holistic view. - Rivista di Biologia, 1998, vol. 91, no. 2, pp. 221–232. https://www.researchgate.net/publication/215639449; 11. Ostroumov, S.A., Anthropogenic effects on the biota: Towards a new system of principles and criteria for analysis of ecological hazards. - Rivista di Biologia - Biology Forum. 2003. Vol. 96 (1). P. 159-169. (2003). https://www.researchgate.net/publication/215639427 ; 12. Ostroumov, S.A., Verh. Int. Ver. Limnol., 2005, vol. 29, no. 2, pp. 1072–1075. 13. Ostroumov, S.A., Some Aspects of Water Filtering Activity of Filter-Feeders, Hydrobiologia, 2005, vol. 542, pp. 275–286. https://www.researchgate.net/publication/226902807 ; 14. Ostroumov, S.A., Biological Effects of Surfactants, Boca Raton: CRC, 2006. https://www.researchgate.net/publication/200637626; 15. Ostroumov, S.A., and Widdows, J., Inhibition of mussel suspension feeding by surfactants of three classes. Hydrobiologia, 2006, vol. 556, no. 1, pp. 381–386. https://www.researchgate.net/publication/259402821; Pictures – see next page: Daphnia magna ** Scenedesmus quadricauda ** Scenedesmus quadricauda **
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Текст книги. РОЛЬ БИОТЫ В ЭКОЛОГИЧЕСКИХ МЕХАНИЗМАХ САМООЧИЩЕНИЯ ВОДЫ. С.А.Остроумов. https://www.researchgate.net/publication/313248439;
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https://www.researchgate.net/publication/310952521; Part 2 of huge collection of posts on environmental science (7000 pages). Ecology, water quality, ecotoxicology, and related topics. Content includes: Response of test-organisms to water pollution with quaternary ammonia compounds; Ostroumov, S.A. (Moscow State University) http://5bio5.blogspot.com/2013/01/response-of-test-organisms-to-water.html ** Russians respectable in Harvard. University library: biology, chemistry, environmental_science, conservation. Available: http://5bio5.blogspot.com/2013/01/books-of-russian-scientists-in-library.html ** Technology of protection of climate and environment will be based on ecological research. A new concept was proposed by S. Ostroumov, Moscow University:
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Part 2 of huge 7000-page list of posts, links on environmental safety, science, environmental science, biology, ecology, water quality, ecotoxicology: https://www.researchgate.net/publication/308412948; From content: Response of test-organisms to water pollution with quaternary ammonia compounds Ostroumov, S.A. (Moscow State University) http://5bio5.blogspot.com/2013/01/response-of-test-organisms-to-water.html ** Russians respectable in Harvard. University library: biology, chemistry, environmental_science, conservation. Available: http://5bio5.blogspot.com/2013/01/books-of-russian-scientists-in-library.html ** Technology of protection of climate and environment will be based on ecological research. A new concept was proposed by S. Ostroumov, Moscow University:
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Part 3 of 7000-page list of posts on environmental science, biology, ecology, water quality, ecotoxicology. https://www.researchgate.net/publication/308411563 ** From content: http://5bio5.blogspot.com/2013/02/question-that-were-answered-in-book.html ** Questions that were answered in the book 'Biological Effects of Surfactants' http://5bio5.blogspot.com/2013/02/question-that-were-answered-in-book.html ** Biological effects of surfactants. Book:useful, innovative. environmental, toxicology, testing, hazards detergents, http://5bio5.blogspot.com/2013/02/biological-effects-of-surfactants.html ** British Library,Cambridge,Imperial College,Leeds,Natl Libr Scotland,Oxford,TrinityCollege,Dublin, Book on surfactants. Available: http://5bio5.blogspot.com/2013/02/ecotoxicology-british-library-cambridge.html ** Biological effects of surfactants.Book environmental, toxicology,bioassay, testing hazards detergents surfactants
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Абакумов В.А. НОВОЕ В ИЗУЧЕНИИ СОВРЕМЕННЫХ ПРОБЛЕМ НАУК ОБ ОКРУЖАЮЩЕЙ СРЕДЕ И ЭКОЛОГИИ, ВКЛЮЧАЯ ИССЛЕДОВАНИЯ ВОДНЫХ ЭКОСИСТЕМ И ОРГАНИЗМОВ.-Успехи наук о жизни.2012, No.5,c.121-126. https://www.researchgate.net/publication/299442419
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Абакумов В.А. Новое в изучении современных проблем наук об окружающей среде и экологии, включая исследования водных экосистем и организмов // Успехи наук о жизни. 2012. No. 5, p. 121-126. https://www.researchgate.net/publication/299442286; полный текст.
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Review. The review is on new achievements in environmental science and ecology. The review cited a selected list of relevant publications with substancial innovations in ecotoxicology, aquatic ecology, and related areas of science. Among the cited publications: Medium-term and long-term priorities in ecological studies. See the full text: https://www.researchgate.net/publication/200594244; This file was uploaded as a supplement to: Medium-term and long-term priorities in ecological studies. See the full text: https://www.researchgate.net/publication/200594244;
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Абакумов В.А. Новое в изучении...-Успехи наук о жизни.2012,No.5,c.121-126. https://www.researchgate.net/publication/299442252 ;
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Filtration capacity of Ciona intestinalis was measured in the laboratory and determined from the exponential reduction in algal cell concentration as a function of time. Filtration rate (F,ml min-1) as a function of dry weight (W,g) was F=118Wtotal0.68 and F=199Worgan0.67 for total dry weight and dry weight of organs, respectively. Ascidians starved at least 12 h had, after addition of algal cells, an initial lag-phase (1-2 h) with low filtration rates before constant high rates were attained. Duration of the initial lag-phase was longer at low algal cell concentrations. At algal cell concentrations above 10-15 × 103 cells ml-1, the filtration rate declined to a lower level after some time, possibly correlated with the filling of the gut. In the temperature range 4-21°C, maximum filtration rate (Fmax, ml min-1ind.-1) increased linearly with increasing temperature (T,°C) according to Fmax=1.46T-1.21. Above 21°C filtration rate declined rapidly with increasing temperature. The population density of C. intestinalis in the shallow cove Kertinge Nor, Fyn, Denmark, varied greatly over the year with maximum densities in autumn. The filtration potential of the C. intestinalis population varied during the year between 0.1-1.0 times a volume equivalent to the total water volume of the cove per day. Results suggest that C. intestinalis in Kertinge Nor may have an important grazing impact on the phytoplankton in late summer-early fall. -from Authors
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Porcellana longicornis is a filter feeder that changes its feeding mechanism in relation to water flow conditions. In still water and slow flow, it actively sweeps the water with its maxillipeds. As flow speed increases, it switches from active suspension feeding to passive feeding. In low frequency oscillating flow, the crabs rhythmically reorient their suspension feeding fans so that both cup-shaped maxillipeds are upstream. In high frequency oscillating flow, the crabs perform alternate movements of left and right feeding fans, so that 1 fan is extended and the concave face is directed upstream, while the other is withdrawn. In the present study, we estimated the clearance rate and energy absorption of P. longicornis in the different flow regimes. The average clearance rate for active feeding, in slow unidirectional flow, was 0.267 1 crab-1 h-1, while in passive feeding, in fast unidirectional flow, the clearance rate was 0.142 1 crab-1 h-1. In oscillating flow at 0.5 Hz, the clearance rate was 0.158 1 crab-1 h-1, while at 0.1 Hz it was 0.201 1 crab-1 h-1. Using the algal concentrations and the energy conversion factor we calculated the amount of energy gained by the crabs during the different feeding behaviors. The energy absorbed was computed and presented as J crab-1 h-1. Using the dry weight of the crabs, this was converted to energy absorbed by a 'standard' crab of 25 mg. The oxygen consumption of crabs was estimated as 1.122 μmol O2 (25 mg dry wt)-1 h-1 for active feeding; 1.640 μmol O2 (25 mg dry wt)-1 h-1 for passive feeding; 0.921 μmol O2 (25 mg dry wt)-1 h-1 for low frequency oscillating current; and 0.829 pmol O2 (25 mg dry wt)-1 h-1 for high frequency oscillating flow. However there was no significant difference between oxygen consumption during the different flow conditions. The average heat production for all the experiments was 0.5454 ± 0.3096 J crab-1 h-1 or 0.5353 ± 0.3734 J (25 mg dry wt)-1 h-1. The energy budget of P. longicornis during the different behaviors was computed, and it was found that the highest energy gain is during active feeding. The higher energy input is contributed by grazing, and not by low heat production. It is suggested that this behavior is an adaptation to life under stones where flow is limited and particulate organic matter is supplied by the activity of the crabs.
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Particle uptake and deposition by the 2 most abundant deep-sea demosponge species from the Norwegian and Greenland Sea (Thenea abyssorum) and the deep fjords of western Norway (Thenea muricata) were studied in flume experiments. Fluorescent particles of 1, 2, 3, 6, 10 and 16 mu m diameter (microspheres, Duke Scientific Corporation(R)) with a density of 1.05 g cm(-3) were used at 2 current velocities, 1.5 and 5 cm s(-1). Both species ingested small particles exclusively (<6 mu m and <10 mu m, respectively), with a preference for the smallest fraction at both current speeds. The results suggest that the size spectrum actually ingested depends on the supplied particle sizes rather than on current velocity. Current velocity fields around dead specimens were recorded and turbulence intensity calculated in order to determine the influence of the sponge acting as a biogenic structure on the near-bottom current regime. Disruption of flow conditions was detected as far as 14 cm downstream and several cm laterally from the biogenic obstacles. Bulk biodeposition rates calculated from sponge biomass and volume of ingested particles range between 7 and 10 mg d(-1) g(-1) ash-free dry weight.
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Suspension-feeding animals are common macroscopic inhabitants of hardand soft-bottom habitats in shallow coastal waters. Many forms aggregate on specific bottom types where they take advantage of the free-energy subsidies provided by waves, tides and wind-driven currents that transport oxygen and particulate food to them, carry away waste, disperse larvae, and exclude predators. Because these organisms can move and process large amounts of material between the water column and the bottom, they are often major agents of benthic-pelagic coupling and nutrient cycling (Dame 1996; Wildish and Kristmanson 1997). As a group, they have been promoted as system filters or cleaners because of their suspension-feeding abilities (Newell 1988). Some reef builders are advocated as erosion-control mechanisms (Kirtley and Tanner 1968). All of these functional roles imply that benthic suspension feeders play a significant part in the overall functioning of many shallow coastal systems.
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Marine ecology : progress series, vol. 38, nr. 3, 201-212
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Chapter
Benthic filter feeders are capable of translocating and transforming large quantities of matter from the estuarine water column. Evidence at the individual, population and ecosystem levels supports the contention that filter feeders are probably a significant coupling between the water column and the benthos. We hypothesize that benthic filter feeders are a major controlling element in marsh-estuarine nutrient cycling.
Conference Paper
This is one of the first or the first publication in which the new word 'biomachinery' was used. This term was coined by the author of this publication. Ostroumov S.A. Integrity-oriented approach to ecological biomachinery for self-purification and bioremediation in aquatic ecosystem: stopping an ecological time [...] // Limnology and Oceanography: Navigating into the Next Century. Waco, Texas: ASLO. -1999. - P. 134. https://www.researchgate.net/publication/266151523 ; New concept and terminology were introduced in this publication, namely, ecological biomachinery. These are some later publications that used this terminology, they used the word 'biomachinery' : Limnology and Oceanography: Navigating into the Next Century. Waco, Texas: ASLO ** Filter-feeders as part of ecological biomachinery to purify water. Verh. Internat. Verein. Limnol. 2005. Vol. 29/2 (Stuttgart, E.Schweizerbart'sche Verlagsbuchhandlung), p.1072-1075; https://www.researchgate.net/publication/215905965 Article Jan 2005 ** Publication Preview Source Filter-feeders as part of ecological biomachinery to purify water, SIL Proceedings, https://www.researchgate.net/publication/325514384; 2017, 29 (2): 1072-1074 ** Publication Preview Source https://www.researchgate.net/publication/323122008; Water Quality and Conditioning in Natural Ecosystems: Biomachinery Theory of Self-Purification of Water ** Trends in modernizing the fundamental concept of ecosystem: self-repairing, self-cleaning, self-reforming, energy-saving, and labile biomachinery. https://www.researchgate.net/publication/200830357 **
Article
Ostroumov, S. A., 2000. Kriterii ekologhicheskoj opastnosti antropoghennykh vozdejstvij na biotu: poiski sistemy. Doklady Akademii Nauk, 371: 844–846. In Russian. https://www.researchgate.net/publication/266139745 ; The title of the paper in Russian: Критерии экологической опасности антропогенных воздействий на биоту: поиски системы. ** ENGLISH VERSION AVAILABLE ONLINE FREE: Criteria of ecological hazards due to anthropogenic effects on the biota: searching for a system; https://www.researchgate.net/publication/215905990 ; Doklady Biological Sciences, Vol. 371, P. 204-206. ** Критерии экологической опасности антропогенных воздействий на биоту: поиски системы // ДАН. 2000. Т. 371. № 6. С.844-846. 2 табл. Библиогр. 14 назв. [представлено академиком В.Н. Большаковым. Предложен новый принцип анализа воздействий]. Существующая система критериев для оценки экологической опасности загрязняющих веществ уязвима для критики. Выдвинута новая концепция системы критериев для оценки экологической опасности антропогенных воздействий на биоту. Предложено оценивать опасность антропогенных воздействий (включая загрязнение химическими веществами) в соответствии со следующими четырьмя уровнями нарушений в биологических и экологических системах. (1) Уровень индивидуальных и популяционных откликов. (2) Уровень агрегированных откликов групп организмов. (3) Уровень стабильности и целостности экосистем. (4) Уровень вклада экосистем в биосферные процессы. Дается пример того, как предложенная система критериев может прилагаться к анализу конкретных фактических данных. Для иллюстрации эффективности предложенной системы критериев показано, как использовать ее для анализа новых данных об ингибирующем воздействии неионогенного поверхностно-активного вещества Triton X-100 (0.5 mg/L) на фильтрацию воды двустворчатыми моллюсками Mytilus edulis. Показано, что сформулированная система критериев полезна для того, чтобы более объективно оценить экологическую опасность антропогенных воздействий на биоту, включая воздействия химических веществ, загрязняющих экосистемы. https://www.researchgate.net/publication/265378288_________ ; https://www.researchgate.net/publication/265378288_ ; English translation: Criteria of ecological hazards due to anthropogenic effects on the biota: searching for a system. - Doklady Biological Sciences, 2000. Vol. 371, P. 204-206. 2 tables. Bibliogr. 14 refs. ISSN 0012-4966. PMID: 10833660 [PubMed]; http://www.citeulike.org/user/ATP/article/9751215; Distributed by Springer, orderdept@springer-sbm.com. This paper formulated a fundamentally new solution to the problem of selecting criteria for identification and assessing environmental hazards of chemical pollutants, toxicants; the paper explains why the currently accepted set of criteria is non-efficient and leads to mistakes. The currently accepted system of criteria for evaluating ecological hazards from man-made chemicals (which is used in W.Europe, N.America and in some other countries) is outdated and vulnerable to criticism. The author proposed a new concept of the system of the criteria for evaluating the ecological hazard from man-made impact. The author suggested to assess man-made impacts (including effects of pollutants and xenobiotics) on the biota according to the following four levels of disturbance in biological and ecological systems: (1) the level of individual and populational responses; (2) the level of aggregated responses; (3) the level of stability and integrity of the ecosystem; (4) the level of contributions of the ecosystem into biospheric processes. An example is given of how to apply the proposed system of criteria to the analysis of concrete experimental data. To exemplify the efficiency of the proposed system of criteria, it is shown how to use it to analyze the new original data on effects of a non-ionic surfactant on water filtering by bivalves. It is concluded that the proposed system of criteria will be helpful in better assessing environmental hazards from anthropogenic effects on the biota including effects of man-made chemicals polluting ecosystems. The examples of the tables in this paper: A new system of principles for analysis of man-made impact: the level-block approach to analysis of ecological hazards (Tab.1); the synthetic surfactant Triton X-100 (0.5 mg/L) inhibits water filtering by the bivalve mussels Mytilus edulis (Tab. 2). "The proposed level–block approach to analysis of ecological hazards of anthropogenic alterations in ecosystems allows the multiplicity of anthropogenic effects on the biota to be systematized. This approach may be used to develop criteria for estimation and classification of ecological hazards due to anthropogenic effects" (p.206)]. ISSN 0012-4966. Distributed by Springer, orderdept@springer-sbm.com; Full text free: http://ru.scribd.com/doc/49069767/; http://ru.scribd.com/doc/49065476/; http://ru.scribd.com/doc/49088234/; http://sites.google.com/site/2000dbs371p204criteria/; PMID: 10833660 [PubMed - indexed for MEDLINE] http://www.ncbi.nlm.nih.gov/pubmed/10833660; http://scipeople.ru/users/2943391/; [new system of principles for analysis of man-made impact: the level-block approach to analysis of ecological hazards (Tab.1); Triton X-100 (0.5 mg/L) inhibits filtering by Mytilus edulis (Tab. 2) "The proposed level–block approach to analysis of ecological hazards of anthropogenic alterations in ecosystems allows the multiplicity of anthropogenic effects on the biota to be systematized. This approach may be used to develop criteria for estimation and classification of ecological hazards due to anthropogenic effects" (p.206)]. In Web of Science, this paper was indexed as: Criteria for assessing ecological hazards of man-made impact on biota: Searching for a system; Author(s): Ostroumov SA; Source: DOKLADY AKADEMII NAUK, Volume: 371, Issue: 6, Pages: 844-846, Published: APR 2000 (viewed 22 Feb 2012).
Book
Alimov A.F. Functional Ecology of Freshwater Bivalves (Funktzionalnaja Ekologija Presnovodnykh Dvustvorchatykh Molluskov). Nauka press, Leningrad. 248 pp.
Article
The benthic suspension feeders Cerastoderma edule and Mytilus edulis form the major part of the biomass of all ecogroups in the Oosterschelde. Mean biomass on mussel culture plots in the western part was 340 g ADW/m2 and on cockle banks 63 g ADW/m2. Because of filtration a seston flux towards the bottom exists of 170-600 g suspended particulate matter/m2/day on an annual average basis. Of this biodeposited material the greater part is resuspended immediately. Because 20-25 % of the total volume is filtered per day, limitation of algal biomass is expected. Density and growth show a decrease from west to east, not fully corresponding with food quantity and quality. Some model calculations of seston depletion in relation to current speed, water depth and length of mussel and cockle banks are presented, with reference to future reduction of current velocities because of the construction of a storm-surge barrier.
Article
Ostroumov, S. A. (2001) Amphiphilic chemical inhibits the␣ability of molluscs to filter water and to remove the cells of phytoplankton. Izvestia RAN. Series Biology, issue 1, pp. 108-116. https://www.researchgate.net/publication/259497365
Article
Temporal variability in biodeposit production by Choromytilus chorus (Molina) and Mytilus chilensis (Hupe) was studied from February 1989 to January 1990 in the Queule River Estuary, southern Chile. Biodeposits were collected monthly from PVC cylinders containing C. chorus or M. chilensis and analyzed for total dry weight, inorganic and organic weight and organic carbon and nitrogen content. Water characteristics (temperature, salinity, oxygen, chlorophyll a, seston) were also measured at each sampling period. The highest biodeposition rates were calculated during spring and summer months; from October until January sedimentation and mussel biodeposition rates were similar. During this period the highest temperature and water salinities occurred, as well as one of the 2 chlorophyll a peaks observed during the study. The lowest biodeposition rates occurred during winter months, when temperature and water salinities were lowest and turbidity of the water was at its highest. Mean annual biodeposition rate of C. chorus was 271 g total dry weight (DW) m-2 d-1, with 212 and 59 g DW m-2 d-1 for the inorganic and organic fractions, respectively. Mean annual biodeposition of M. chilensis was 234 g total DW m-2 d-1, with 184 and 49 g DW m-2 d-1 for the inorganic and organic fractions. Mean annual sedimentation rate was 553 g total DW m-2 d-1, with 458 and 95 g DW m-2 d-1 for the inorganic and organic fractions, respectively. Biodeposits of C chorus averaged annually 6.4 % carbon and 0.3% nitrogen, with a C/N ratio of 40.8. Biodeposits of M chilensis averaged 6.0 % carbon and 0.4 % nitrogen, with a C/N ratio of 21.4. Naturally sedimented material averaged annually 5.5 % organic carbon and 0.5% organic nitrogen, with a C/N ratio of 13.6
Article
In the Bay of Brest, France, suspension feeders are broadly dominant in the trophic structure of macrobenthic assemblages in terms of species number, number of individuals and biomass. A succession of species exists on an east-west gradient, which is an ecological continuum from a < 10 m depth polyhalme muddy environment to a > 20 m depth marine environment with coarse and clean sedirnents. The abundance of biogenic substrates (shells, calcareous algae, etc.) on the sediment surface favours a high development of sessile epifauna. Some species, such as Crepicula fornicata, Ascidiella aspersa, Ficulina ficus, Ophiothrix fragilis and Ophiocomina nigra, can locally proliferate, reaching 100 g ODW (organic dry wt) m-2. Fertilization of the bay by streams loaded with nutrients induces a very high primary production (280 g C m-' yr-l) characterized by high annual and seasonal variability of phytoplanktonic blooms. However, so far, eutrophication has not been observed. While water renewal by tidal currents is one important factor in the control of eutrophication, suspension feeder activity is undoubtedly another effective control factor. Benthic suspension feeders can filter 7.18 X 10' m3 daily, which represents ca 30% of the total volume of the bay. The phytoplankton production is easily accessible to the benthos because of the relatively long water residence time and the high tidal current mixing. Spatial distribution of populations was found to be related to the tidal current distribution.
Article
Seasonal changes in the amount of biodeposit (faeces and pseudofaeces) produced by the mussel Mytilus edulis L., which is one of the representative suspension-feeders in the rocky intertidal and shallow subtidal regions of Mutsu Bay, were studied in the laboratory. The effects of water temperature, light, food concentration, flow rate, body size, age, and spawning on biodeposit production were investigated. More biodeposit was produced in summer than in other seasons. Throughout the year, the amount of biodeposit was positively correlated with body size. Relatively more biodeposit was produced by smaller than by larger individuals. A M. edulis population living in one square meter was estimated to produce 9.20 kg of faeces and 2.71 kg of pseudofaeces per year (dry wt). More biodeposit was produced at water temperatures of 17.6–20.2° C than at 4.5–7.6° C and 25.2–26.0° C. The optimum temperature for biodeposit production was found to be ≈ 20.0 °C. When kept in the dark, M. edulis produced more biodeposit than in the light. When food concentration is increased, more psuedofaeces are produced; the amount of faeces, however, remains constant. With increasing flow rate, the amount o f biodeposit per h increased but the biodeposition rate decreased. Larger amounts of faeces and smaller amounts of pseudofaeces were produced by younger mussels than by older ones of a similar size. Spawning also affected biodeposit production.
Article
The effects of selected neurotoxic pesticides on the feeding rate of marine mussels (Mytilus edulis) were determined. Two organochlorine pesticides, lindane and endrin, two acetylcholinesterase-inhibiting compounds, dichlorvos and carbaryl and two pyrethroids, flucythrinate and permethrin, were studied. No evidence was found for any specific neurotoxic effect of the organochlorines and pyrethroids on feeding efficiency. In contrast, dichlorvos and carbaryl inhibited the enzyme acetylcholinesterase in mussel gills and were more toxic to feeding efficiency than could be explained by a narcotic mechanism of toxicity alone. Dichlorvos also caused clear behavioural changes in the mussels. The significance of these observations for the application of mussels to impact assessment in the marine environment is discussed. © 1997 SCI.
Article
1. The grazing of [methyl-3H]thymidine-labelled bacteria by zooplankton was studied in Lake Norrviken. Sweden. 2. Animals did not ingest bacteria attached to large colonies of the cyanobacterium Microcystis wesenbergii Kom. but small aggregates of hacteria and free bacteria were readily consumed. 3. Diaphanosoma brachyurum (Liévin). Daphnia cucullata Sars. and Daphnia galeata Sars grazed free bacteria more quickly than aggregates, but Endiaptomus gracilis (Sars), Chydorus sphaericus Müll. and Bosmi- na coregoni s.l. Baird grazed the aggregates more readily. 4. Filtering rate determinations varied from LA to 123 μl ind. −1h − 1for various species.
Article
For Narragansett Bay, Rhode Island, newly calculated and archival data for the area, mean depth, total volume, mean salinity and fresh water input are presented. Estimates of the residence time of the water, derived from 22 sets of monthly mean values, were related to estimates of the fresh water input according to the empirical relationship T=41.8 e−0.00435(FW), where T is the flushing time in days, and FW is the fresh water input in m3 per s; the r2 value is 0.841. Adding estimates of the mean wind speed into a multiple regression increased the correlation coefficient only to 0.864. At the long-term mean rate of fresh water input (105 m3 per s) the flushing time is 26 days. At the lowest mean monthly input rate observed the flushing time was nearly 40 days, while at the highest mean monthly input rate in the data set (325 m3 per s) the flushing time was about 10 days. Known sources of random error appear sufficient to account for most of the deviations from the relationship. The evidence suggests that variation in the flushing time is largely determined by variation in the fresh water input.
Article
Freshwater zooplankton species differ in their consumption of live and dead algal cells when tested in situ. Using isotopically-labeled living and heat-killed Chlamydomonas reinhardti as models for phytoplankton and detrital seston, respectively, we tested differential feeding on these foods by 3 rotifers and 2 microcrustaceans. Keratella cochlearis selectively feeds on detrital materials while 2 sympatric rotifer species, Conochilus dossuarius and Kellicottia bostoniensis show no ability to discriminate between the living and dead foods. Both the copepod Diaptomus spatulocrenatus and a cladoceran, Bosmina sp., differentially consume living cells.
Article
[This article was also published as a Chapter in the book: Aquatic biodiversity : a celebratory volume in honour of Henri J. Dumont ]. https://www.researchgate.net/publication/226127394; Effects of several surfactants and chemical mixtures on marine bivalves were studied. An anionic surfactant, sodium dodecylsulphate (SDS), and a cationic surfactant, tetradecyltrimethylammonium bromide (TDTMA), inhibited the filtering activity of oysters (Crassostrea gigas). Similar effects were exhibited by some chemical mixtures that included surfactants. Those mixtures inhibited the filtering activity of Crassostrea gigas and Mytilus galloprovincialis. The new results are in agreement with the author’s previous experiments, where a number of xenobiotics and/or pollutants inhibited the filtering activity of several species of marine and freshwater bivalves, e.g., it had been shown that SDS inhibited filtering activity of Mytilus edulis (e.g., Ostroumov, 2000c, 2001a). This experimental approach is helpful in assessment of environmental hazards from man-made chemicals that can contaminate marine systems. ** This article was also published as a Chapter in the book: Aquatic biodiversity : a celebratory volume in honour of Henri J. Dumont .
Article
A benthic annular flume for both laboratory and in situ deployment on intertidal mudflats is described. The flume provides a means of quantifying material flux (i.e., biodeposition of suspended particulates, sediment resuspension, nutrients, oxygen, and contaminants) across the sediment-water interface in relation to changes in current velocity and benthic community structure and/or population density of key macrofauna species. Flume experiments have investigated the impact of the infaunal bivalveMacoma balthica and the epifaunal bivalveMytilus edulis on seston and sediment flux at the sediment-water interface. The bioturbatorMacoma was found to increase the sediment resuspension and/or erodability by 4-fold, at densities similar to those recorded at the Skeffling mudflat (Humber estuary) (i.e., >1000 individuals m−2). There was a significant correlation between sediment resuspension andMacoma density (r=0.99; p<0.001), which supported previous in situ field observations indicating bioturbation byMacoma enhanced sediment erodability. Biodeposition rates (g m−2 h1) ofMytilus edulis andCerastoderma edule were quantified and related to changes in population density in a mussel bed (Cleethorpes, Humber estuary). Biodeposition rates were up to 40-times the natural sedimentation rates. At the highest mussel bed densities (i.e., 50–100% cover or >1400 mussels m−2) the physical presence of this epifaunal bivalve on the sediment surface reduced erosion by 10-fold. The shift from net biodeposition to net erosion occurred at current velocities of 20–25 cm s−1. These results demonstrate that infaunal and epifaunal bivalves can have a significant impact on seston flux or sediment deposition and on sediment resuspension or erodability in estuaries where there are extensive mudflats.
Article
In an attempt to assess the impact of bivalve culture in Carlingford Lough, Ireland, the seasonal cycles of nutrients, particulate matter, chlorophylla, and phytoplankton in the lough was investigated in 1992. Chlorophyll levels showed an increase in April, corresponding to the annual spring bloom, and levels remained relatively high (2–12 mg m−3) throughout the summer before dropping to a winter minimum by December. Throughout the summer the phytoplankton community was dominated by diatoms, with microflagellates becoming an increasingly larger fraction of the biomass in autumn and winter. Dinoflagellates were only present on occasion in low numbers during the summer months. Seasonal variations in nitrate, phosphate, and silicate concentrations at all stations showed characteristic winter maxima and summer minima. Nitrate concentrations had reached a minimum undetectable level by June, at a time when the main freshwater input from the Clanrye River had dropped to <0.3 m3 s−1. Particulate organic carbon (POC) composed approximately 5% of the suspended matter, with highest values in winter due to resuspension. Levels of biologically available POC, as determined by a modified BOD technique, were greatest in summer, and an inverse relationship was observed between total POC and its fraction that was biologically available. Most of the labile fraction was considered to be phytoplankton, and remineralization during the summer is suggested as a mechanism for maintaining high productivity during the summer months. Although the phytoplankton biology was uncoupled with that outside the lough, it is concluded that there is scope for expansion of the local bivalve mariculture industry without altering the ecosystem of the lough. The upper limit on such expansion would be set by practical considerations such as availability of space and site suitability due to water quality.
Article
An estimate of the total standing stock of Ficopomatus enigmaticus (Fauvel) in the Marina da Gama, Zandvlei, near Cape Town was made, and some aspects of the animals' filter-feeding behaviour investigated. Working on values of 5·23 g dry mass of worm (excluding tube) m−2 on the submerged aquatic plant Potamogeton pectinatus L., plus 84·9 g m−2 on the canal walls, the total standing stock of the serpulid was estimated at 2·88±2·24 t (1·4 t on Potamogeton; 1·48 t on canal walls).At the average particle concentrations of Marina water of 5·27 mg l−1, the clearnace rate of F. enigmaticus was 8·59 ml mg−1 worm h−1, resulting in an ingestion rate of 45·27 mg mg−1 worm h−1 of particles in the size range 2–16 μm. Clearance and ingestion rates both increased in direct proportion to food concentration. Using estimates of total standing stocks within the Marina, the F. enigmaticus population clears 2·47 × 107 l of water h−1 and consumes 1·3 × 108 mg of particles h−1 in the 2–16 μm size range. Thus, the entire volume of the Marina will be filtered in 26·1 h through the activities of this animal alone, illustrating its importance for the maintenance of water quality within this moderately polluted system.
Article
Seasonal variation of phytoplankton over an intertidal mussel bed was measured in the Wadden Sea near the island of Sylt between February 1984 and April 1985. To quantify the uptake of phytoplankton by a mussel bed, an open flow-through system, the Sylt flume (20 × 2 × 2 m), canalized the tidal water over a bed of Mytilus edulis L. Changes in the content of phytoplankton in the water passing through the flume were used to calculate phytoplankton uptake over three tidal cycles in the summer of 1986. Phytoplankton plankton biomass was reduced by 37 ± 20% between the inflow and outflow of the flame. This figure includes active filtration of mussels and sedimentation. Phytoplankton biomass was reduced by the mussel bed over the whole size range from the smallest cells of 4 μm (or a new pg C·cell−1) up to the largest diatoms of several hundred μm (or a new thousand pg C·cell−1. The higher the phytoplankton concentration, the higher the uptake by the mussel bed. There was a significant positive correlation between both concentration and uptake of phytoplankton. Parallel with the uptake of phytoplankton by the mussel bed, a higher nutrient release by the mussel bed was measured. Potential primary production based on the N : C ration of 16 : 106 was estimated, assuming that the released ammonium would be taken up entirely by phytoplankton. Following this assumption, the potential primary production induced by the nutrient release of the mussel bed is higher than the uptake of phytoplankton by the mussel bed. It is also probable that mussels extract N from particulate organic material other than phytoplankton. While mussels strongly reduce phytoplankton biomass, mussel beds also have the potential to significantly promote primary production.
Article
Sublethal physiological responses (clearance rate, oxygen uptake, absorption efficiency and scope for growth) of mussels (Mytilus edulis) were measured following exposure to tributyltin (TBT) and dibutyltin (DBT). Effects were related to the concentration of TBT and DBT in the mussel tissues. Rate of oxygen uptake increased two-fold with increasing TBT concentration from 0·5 to 10 μg TBT g−1 (dry weight). Clearance (= feeding) rate was significantly reduced above a threshold concentration of 3 to 4 μg TBT g−1. Absorption efficiency was unaffected at concentrations below 10 μg TBT g−1. The overall effect, in terms of scope for growth, indicated a severe inhibition of growth above 4 μg TBT g−1. DBT was shown to be an order of magnitude less toxic than TBT, when expressed in terms of the tissue concentration inducing toxic effects. The threshold concentrations causing a reduction in the rates of feeding and oxygen uptake were 23 and 36 μg DBT g−1, respectively. These sublethal effects are discussed in relation to mechanisms of toxicity, previous alkyltin studies and environmental concentrations.
Book
https://www.researchgate.net/publication/200637729; book: Conservation of Living Nature and Resources: Problems, Trends, Prospects. www.springer.com/us/book/9783642753787; both the paper book and e-book are available. ebook ISBN 978-3-642-75376-3. DOI 10.1007/978-3-642-75376-3; https://www.researchgate.net/publication/200637729_book_Conservation_of_Living_Nature_and_Resources_Problems_Trends_Prospects ; Yablokov A.V., Ostroumov S.A. Conservation of Living Nature and Resources: Problems, Trends, Prospects. Berlin, Heidelberg, New York, London, Paris, Tokyo, Hong Kong, Barcelona, Budapest. Springer. 1991. XII. 272 p., tab. Bibliogr.: p. 227-248. Index of Authors: p. 249-251. Subject Index: p. 253-271. ISBN 3-540-52096-1; 0-387-52096-1. Book (Hardcover ); The deterioration of the environment has become one of the most serious problems of the 20th - 21st centuries. We are faced with increasing global problems - hunger and desertification, depletion of natural resources and deficiency of energy, pollution and man-triggered changes of climate. Presenting many new facts and examples from environmental studies in East and West, part I analyzes the problems of conservation at all main levels of life: the molecular-genetic, the ontogenetic, the species-population, and the ecosystem level. After an appraisal of present conditions, the authors show which changes in the different sectors of society (including agriculture, industry, recreation, etc.) are necessary to solve our environmental problems. [http://www.flipkart.com/conservation-living-nature-resources-yablokov/3540520961-abz3f9g9fl]. This book examines the problems arising from the deterioration of the environment and covers the issues of conservation and biodiversity protection at the molecular-genetic, the ontogenetic, the species-population and the ecosystem levels. The book offers suggestions concerning changes in practice in agriculture, industry, recreation etc. – in all sectors of society life and functioning. The deterioration of the environment has become one of the most serious problems of the twentieth century. The 12 chapters in this book: (1) the dangerous extent of human impact on the biosphere; (2) molecular genetic level; (3) problems at the ontogenetic level; (4) problems at the species-population level; (5) problems at the ecosystem level; (6) economic problems; (7) organizational and legal problems of the protection of living nature; (8) problems of prognostication; (9) protection of living nature and its connection with other global problems; (10) need for ecologization of society's activities; (11) ways of preserving living nature; and (12) scientific foundations and theory of living nature protection within the system of biological science. The book analyses of the problems of conservation, and suggest ways of solving them. http://www.cababstractsplus.org/abstracts/Abstract.aspx?AcNo=19921964581 Published positive reviews of the book: Goldsmith F. B. Review: Conservation of Living Nature and Resources, by A. V. Yablokov; S. A. Ostroumov. - The Journal of Ecology, 1992. Vol. 80, No. 1, p. 186-187; Hartshorn G. S. A Russian "Silent Spring". - BioScience, 1992, Vol. 42, No. 7, p. 559-560. [‘BioScience’ is published by: American Institute of Biological Sciences] [on the book: ‘Conservation of Living Nature and Resources: Problems, Trends, and Prospects’ by A. V. Yablokov; S. A. Ostroumov]. [Gary S. Hartshorn, World Wildlife Fund Washington, DC 20037]; Book review: Conservation of Living Nature and Resources: Problems Trends and Prospects, by A. V. Yablokov, S.A.Ostroumov. - Biological Conservation. 1993, Vol. 63, Issue 3, P. 271 [doi:10.1016/0006-3207(93)90728-J]; Dokumentation Natur und Landschaft (DNL) (Germany), 32 (1992) 1 (in German); Revista Espanola de Fisiologia (Spain). 48 (1992), 1 (in Spanish); Alauda (France). 61 (1993) 1 (in French); Mammalia (France). 57 (1993) 2, p. 304 (in French); This book written by Moscow scientists is included to the list of recommended literature, the Malay university (Universiti Malaysia Sabah), see: http://www.ums.edu.my/library/index.php?option=com_content&view=article&id=44:main-library&catid=32&Itemid=134&lang=en; Key words in short: Species × RED DATA BOOK × endangered × species extinctions × Amphibians × Fish × Mammals × Higher Plants × Introduced Species × Insects × Reptiles × Captive Breeding × Conservation × habitats × sustainable × Natural Resources × Environmental safety × appied ecology × anthropogenic effects × KEY WORDS: deterioration, environment, conservation, biodiversity, protection, changes in practice in agriculture, industry, recreation, sectors of society life and functioning, dangerous, extent, human impact, biosphere, molecular genetic level; ontogenetic level; species-population level; ecosystem level; economic problems; organizational and legal problems of the protection of living nature; problems of prognostication; protection of living nature global change ecologization of society's activities; ways of preserving living nature; scientific foundations, theory of living nature protection, biological, environmental, sciences, aquatic, terrestrial, ecosystems, endangered, species, Red Data Book, species extinctions, mammals, birds, fish, amphibians, reptiles, insects, higher plants, introduced species, exotic species, captive breeding, priorities in conservation, habitats, principles and history of biological conservation, environmental law, sustainability, sustainable development, sustainable use of natural resources, ecosystem services, environmental safety, applied ecology, anthropogenic effects, man-made impact, environmental education; More sites with comments, useful information on the book: http://5bio5.blogspot.com/2014/03/book-entitled-conservation-of-living.html http://www.scribd.com/doc/59415099/; Many other relevant, related publications - references, links, comments - see here: article: Biological filters are an important part of the biosphere // Science in Russia. 2009. No. 2, p. 30-36. This paper reviews the multi-year research of aquatic organisms: the organisms which are filter-feeders. The research was done by Dr. Sergei A. Ostroumov in U.K., Russia, Ukraine, Moldova. New facts on the substancial role of the filter-feeders in improving water quality. New aspects of environmental hazards from chemical pollution, especially by surfactants and detergents. http://5bio5.blogspot.ru/2014/04/biological-filters-are-important-part.html https://www.researchgate.net/publication/261554265_ ; A note about the book: This book was a success. In a changed form it was translated into Spanish, Bulgarian, Czech. The Czech edition was recommended in Prague as a textbook for universities. The book contains an absolutely innovative organization of amorphous data on anthropogenic effects into a really well-organized and scientifically strict system. The second part of the book contains fundamental ideas on how to achieve a more sustainable use of natural resources. The book is available on Internet as a second-hand book, at a reduced cost. Moreover, I got a message from Springer that they published a second edition. The second edition is soft-cover and probably not expensive. Main keywords: nature conservation, biodiversity protection, conservation biology, protection of ecosystems, endangered species of animals and plants, protection of environment;
Article
Ostroumov S.A. Inhibitory analysis of top-down control: New keys to studying eutrophication, algal blooms, and water self-purification. Hydrobiologia; 2002. 469:117-129; https://www.researchgate.net/publication/200587396 ; This is a well-cited publication. Top-down control is an important type of interspecies interactions in food webs. It is especially important for aquatic ecosystems. Phytoplankton grazers contribute to the top-down control of phytoplankton populations. The paper is focused on the role of benthic filter feeders in the control of plankton populations as a result of water filtering and the removal of cells of plankton from the water column. New data on the inhibitory effects of surfactants and detergents on benthic filter-feeders (Unio tumidus, U. pictorum, Mytilus galloprovincialis, M. edulis and Crassostrea gigas) are presented and discussed. Importance and efficiency of that approach to the problems of eutrophication and water self-purification is pointed out. Chemical pollution may pose a threat to the natural top-down control of phytoplankton and water self-purification process. The latter is considered an important prerequisite for sustainable use of aquatic resources. CITATION. #Citation of this article in #Canada, #China, in 2015. ... #eutrophication, #algal blooms, and water self-purification. ... : http://5bio5.blogspot.com/2015/09/citation-in-canada-china-inhibitory.html ;
Article
Top 10%: According to rating made on the basis of Altmetrics, this article is among 10 % of top articles: High Attention Score compared to outputs of the same age (90th percentile); (30.06.2017); ** Ostroumov S.A. Polyfunctional role of biodiversity in processes leading to water purification: current conceptualizations and concluding remarks.- Hydrobiologia, 2002, 469: 203-204. DOI: 10.1023/A:1015555022737; https://www.researchgate.net/publication/200582742; In 2015, a new citation of this article was made: Shreadah, M.A., Fattah, L.M.A. and Fahmy, M.A. (2015) Heavy Metals in Some Fish Species and Bivalves from the Mediterranean Coast of Egypt. Journal of Environmental Protection, 6, 1-9. This paper is on the prestigious, honorable list 'Top papers, books on aquatic ecology, ecotoxicology' at the largest global catalog, WorldCatalog. Recently, a new favorable review of this paper was published at WorldCatalog (http://5bio5.blogspot.com/2014/09/33-reviews-these-publications-papers.html). The paper was upvoted, bookmarked, downloaded by more than 30% of those who viewed it (by May 2014). It contains new ideas, conclusions on multi-functional role of organisms in water habitats: https://www.researchgate.net/publication/200582742_Ostroumov_S.A._Polyfunctional_role_of_biodiversity_in_processes_leading_to_water_purification_current_conceptualizations_and_concluding_remarks ; This paper was cited by researchers of leading universities and research institutions, e.g. Uppsala University (Sweden) et al., see, e.g.: http://5bio5.blogspot.com/2013/05/federal-public-service-health-food.html ; ABSTRACT. Ostroumov S.A. Polyfunctional role of biodiversity in processes leading to water purification: current conceptualizations and concluding remarks.- Hydrobiologia, 2002 (February), 469: 203-204. DOI10.1023/A:1015555022737; http://www.springerlink.com/content/hcrfvmdncdm8e3pf/ Key words: water quality, water purification, self-purification, biodiversity, pollutants, ecosystem services, freshwater, marine, aquatic ecosystems, sustainability; Sustainable use of aquatic resources is based on the ability of aquatic ecosystems to maintain a certain level of water quality. Water self-purification in both freshwater and marine ecosystems is based on a number of interconnected processes (e.g., Wetzel, 1983; Spellman, 1996; Ostroumov 1998, 2000). Among them are: (1) physical and physico-chemical processes, including: (1.1) solution and dilution of pollutants; (1.2) export of pollutants to the adjacent land areas; (1.3) export of pollutants to the adjacent water bodies; (1.4) sorption of pollutants onto suspended particles and further sedimentation of the latter; (1.5) sorption of pollutants by sediments; (1.6) evaporation of pollutants; (2) chemical processes, including: (2.1) hydrolysis of pollutants; (2.2) photochemical transformations; (2.3) redox-catalytic transformations; (2.4) transformations including free radicals; (2.5) binding of pollutants by dissolved organic matter, which may lead to decreasing toxicity; (2.6) chemical oxidation of pollutants by oxygen; (3) biological processes, including: (3.1) sorption, uptake and accumulation of pollutants by organisms; (3.2) biotransformations (redox reactions, degradation, conjugation), mineralization of organic matter; (3.3) transformation of pollutants by extracellular enzymes; (3.4) removal of suspended matter and pollutants from the water column in the process of water filtering by filter-feeders; (3.5) removal of pollutants from the water in the process of sorption by pellets excreted by aquatic organisms; (3.6) uptake of nutrients (including P, N, and organic molecules) by organisms; (3.7) biotransformation and sorption of pollutants in soil (and removal of nutrients), important when polluted waters are in contact with terrestrial ecosystems; (3.8) a network of regulatory processes when certain organisms control or influence other organisms involved in water purification. Living organisms are involved in physical, physico-chemical and chemical processes 1.1-1.6 and 2.1-2.6 directly or through excretion of oxygen or organic metabolites, production of suspended matter, affecting turbidity, temperature of water or other parameters of the ecosystem. As a result, living organisms are the core component of the multitude of processes of the ecological machinery working towards improving water quality. This component performs eight vital functions directly (3.1-3.8) and is involved indirectly in some of the other twelve functions (1.1-1.6 and 2.1-2.6) so that its role is clearly polyfunctional. Living organisms of aquatic bodies (both autotrophs and heterotrophs) are enormously diverse in terms of taxonomy. Among them, autotrophs generate oxygen that is involved in the processes 2.6 and 2.4 above. Heterotrophs perform processes 3.1, 3.2, 3.4, 3.5 and some others. Virtually all biodiversity is involved. Given this polyfunctional role of aquatic organisms, in one of our publications we compared aquatic ecosystems to 'large-scale diversified bioreactors with a function of water purification' (Ostroumov, 2000). What is interesting about the biomachinery of water purification is the fact that it is an energy-saving device. It is using the energy of the sun (autotrophs) and the energy of organic matter which is being oxidized in the process of being removed from water by heterotrophs. Some interesting examples of how various organisms are incorporated in that polyfunctional activity were given by authors of the preceding papers in this volume. The importance of aquatic organisms in performing key functions in the hydrosphere provides an additional convincing rationale for protecting biodiversity. The efficiency of the entire complex of those processes leading to water purification in ecosystems is a prerequisite for the sustainable use of aquatic resources. Man-made effects on any of those processes (we have shown effects of surfactants on water filtration by bivalves; some of the experiments were carried out together with Dr. P. Donkin) may impair the efficiency of water self-purification (Ostroumov, 1998; Ostroumov et al., 1998; Ostroumov & Fedorov, 1999; Ostroumov 2001a, 2001b). We postulate and predict that further studies will provide new striking examples of how important biodiversity is in performing many vital ecological processes leading to upgrading water quality. By doing so, the multifunctional participation of biodiversity supports the sustainable use of water as one of key resources for mankind. The body of new data and ideas presented in this volume will hopefully serve towards following interconnected and partially overlapping goals: prioritization of efforts on research and management in the area of aquatic resources and aquatic environment; biodiversity studies and protection; sustainable use of aquatic bioresources; advancement of aquaculture and mariculture; decreasing costs and increasing efficiencies in wastewater treatment using ecosystems; combatting eutrophication; understanding the role of biota in biogeochemical flows of chemical elements and in buffering global change. The statements and conclusions that were made in this paper were supported in a series of other publications of the author, including the book (Biological Effects of Surfactants. CRC Press. Taylor & Francis. Boca Raton, London, New York. 2006. 279 p. ISBN 0-8493-2526-9) and a string of articles. Among them: On the biotic self-purification of aquatic ecosystems: elements of the theory. - Doklady Biological Sciences, 2004, Vol. 396, Numbers 1-6, p. 206-211. (https://www.researchgate.net/file.FileLoader.html?key=60f338228d6f3c5114d223ab81e15d3b), Contemporary Problems of Ecology, 2008, Vol. 1, No. 1, p. 147-152 (DOI 10.1134/S1995425508010177) and others. The paper was cited by a number of international experts, e. g. in the following papers: Hydrobiologia, 2006, 556: 365-379, DOI 10.1007/s10750-004-0189-7; Journal of Applied Phycology, 2005, 17: 557-567, DOI 10.1007/s10811-005-9006-6; Mediterranean Marine Science, 2007, Volume 8 (2), 19-32; Aquatic Ecosystem Health & Management, 2009, Volume 12, Number 2, pp. 215-225, DOI: 10.1080/14634980902908589; Desalination, 2010, Vol. 250, Issue 1, Pages 118-129, DOI:10.1016/j.desal.2008.12.062. References: Ostroumov, S.A., 1998. Biological filtering and ecological machinery for self-purification and bioremediation in aquatic ecosystems: towards a holistic view. Rivista di Biologia / Biology Forum. 91: 247-258. Ostroumov, S.A., 2000. Aquatic ecosystem: a large-scale, diversified bioreactor with the function of water self-purification (Vodnaja ekosistema: krupnorazmernyj diversifitzirovannyj bioreaktor s funktzijej samoochishchenija vody). Doklady Biological Sciences 374: 514-516 (the Russian edition: Dokl. Akad. Nauk 374: 427-429). http://www.ncbi.nlm.nih.gov/pubmed/11103331; http://sites.google.com/site/2000dbs374p514bioreactor/ Ostroumov, S.A., 2001a. Amphiphilic chemical inhibits the ability of molluscs to filter water and to remove the cells of phytoplankton (Amfifil'noe veshchestvo podavljaet sposobnost' molluskov filtrovat' vodu i udalat' iz nee kletki fitoplanktona). Izvestia RAN. Ser. Biology. 1: 108-116. Translated into English: An amphiphilic substance inhibits the mollusk capacity to filter out phytoplankton cells from water. - Biology Bulletin, 2001, Vol. 28, No. 1, p. 95-102. DOI 10.1023/A:1026671024000. PMID: 11236572 [PubMed - indexed for MEDLINE]. Ostroumov, S.A., 2001b. Effects of amphiphilic chemicals on marine organisms filter-feeders (Vozdeistvie amfifil'nykh veshchestv na morskikh gidrobiontov-filtratorov). Dokl. Akad. Nauk . Vol. 378. No. 2: 283-285. Translated into English: Effect of amphiphilic chemicals on filter-feeding marine organisms. - Doklady Biological Sciences. 2001. 378: 248-250. http://sites.google.com/site/2001dbs378p248effammaroyst/; DOI 10.1023/A:1019270825775. Ostroumov, S.A., P. Donkin & F. Staff, 1998. Filtration inhibition induced by two classes of synthetic surfactants in the bivalve mollusc (Narushenije filtratzii dvustvorchatymi molluskami pod vozdejstvijem poverkhnostno-aktivnykh veshchestv dvukh klassov). Dokl. Akad. Nauk 362: 574-576. Translated into English: Filtration inhibition induced by two classes of synthetic surfactants in the bivalve mollusk Mytilus edulis // Doklady Biological Sciences, 1998. Vol. 362, P. 454-456. Ostroumov, S.A. & V.D. Fedorov, 1999. The main components of self-purification of ecosystems and its possible impairment as a result of chemical pollution (Osnovnyje komponenty samoochishchenija ekosistem i vozmozhnost' ego narushenija v rezultate khimicheskogo zagrjaznenija). Bulletin of Moscow University. Ser. 16. Biology (Vestnik Moskovskogo Universiteta. Ser. 16. Biologija) 1: 24-32. Spellman, F.R., 1996. Stream Ecology and Self-purification. Technomic Publishing Co., Lancaster, Basel. 133 pp. Wetzel, R. G., 1983. Limnology. Saunders College Publishing, Fort Worth. 858 pp. ADDENDUM (added when the paper was put at the web site). The main conclusions of the paper were supported in a series of publications. The following publications are among them. 1. Ostroumov S. A. Biological Effects of Surfactants. CRC Press. Taylor & Francis. Boca Raton, London, New York. 2006. 279 p. ISBN 0-8493-2526-9. 2. Ostroumov S. A. The concept of aquatic biota as a labile and vulnerable component of the water self-purification system - Doklady Biological Sciences, Vol. 372, 2000, pp. 286–289. http://sites.google.com/site/2000dbs372p286biotalabil/; 3. Ostroumov S. A., Kolesnikov M. P. Biocatalysis of Matter Transfer in a Microcosm Is Inhibited by a Contaminant: Effects of a Surfactant on Limnea stagnalis. - Doklady Biological Sciences, 2000, 373: 397–399. Translated from Doklady Akademii Nauk, 2000, Vol. 373, No. 2, pp. 278–280. http://sites.google.com/site/2000dbs373p397biocatallstag/ 4. Ostroumov S. A. An aquatic ecosystem: a large-scale diversified bioreactor with a water self-purification function. - Doklady Biological Sciences, 2000. Vol. 374, P. 514-516. http://sites.google.com/site/2000dbs374p514bioreactor/ 5. Ostroumov SA. Criteria of ecological hazards due to anthropogenic effects on the biota: searching for a system. - Dokl Biol Sci (Doklady Biological Sciences). 2000; 371:204-206. http://sites.google.com/site/2000dbs371p204criteria/ 6. Ostroumov S. A. An amphiphilic substance inhibits the mollusk capacity to filter out phytoplankton cells from water. - Biology Bulletin, 2001, Volume 28, Number 1, p. 95-102. ISSN 1062-3590 (Print) 1608-3059 (Online); DOI 10.1023/A:1026671024000; http://www.springerlink.com/content/l665628020163255/; 7. Ostroumov S. A. Inhibitory Analysis of Regulatory Interactions in Trophic Webs. -Doklady Biological Sciences, 2001, Vol. 377, pp. 139–141. Translated from Doklady Akademii Nauk, 2000, Vol. 375, No. 6, pp. 847–849. http://sites.google.com/site/2001dbs377p139inhibitory/; 8. Ostroumov SA. The synecological approach to the problem of eutrophication. - Dokl Biol Sci. (Doklady Biological Sciences). 2001; 381:559-562. http://scipeople.com/uploads/materials/4389/Danbio6_2001v381n5.E.eutrophication.pdf 9. Ostroumov SA. The hazard of a two-level synergism of synecological summation of anthropogenic effects. - Dokl Biol Sci. (Doklady Biological Sciences). 2001; 380:499-501. http://sites.google.com/site/2001dbs380p499synerg/ 10. Ostroumov SA. Responses of Unio tumidus to mixed chemical preparations and the hazard of synecological summation of anthropogenic effects. - Dokl Biol Sci (Doklady Biological Sciences). 2001; 380: 492-495. http://sites.google.com/site/2001dbs380p492unio/ 11. Ostroumov SA, Kolesnikov MP. Pellets of some mollusks in the biogeochemical flows of C, N, P, Si, and Al. - Dokl Biol Sci (Doklady Biological Sciences). 2001; 379:378-381. http://sites.google.com/site/2001dbs379p378pellets/ 12. Ostroumov SA. Imbalance of factors providing control of unicellular plankton populations exposed to anthropogenic impact. - Dokl Biol Sci (Doklady Biological Sciences). 2001; 379:341-343. http://sites.google.com/site/1dbs379p341imbalance/; 13. Ostroumov SA. Effect of amphiphilic chemicals on filter-feeding marine organisms.- Dokl Biol Sci (Doklady Biological Sciences). 2001; 378:248-250. http://sites.google.com/site/2001dbs378p248effammaroyst/ 14. Ostroumov SA. Biodiversity protection and quality of water: the role of feedbacks in ecosystems. - Dokl Biol Sci (Doklady Biological Sciences). 2002; 382:18-21; http://sites.google.com/site/2dbs382p18biodivers/; http://www.citeulike.org/pdf/user/ATP/article/6113559/ostroumov_02_biodiversity.pdf; 15. Ostroumov SA. A new type of effect of potentially hazardous substances: uncouplers of pelagial-benthal coupling. - Dokl Biol Sci (Doklady Biological Sciences). 2002; 383:127-130. https://www.researchgate.net/file.FileLoader.html?key=d988acb599e121964c48114374a87e8d; www.springerlink.com/index/28V23JBFADL1Y100.pdf; 16. Ostroumov S. A. Identification of a New Type of Ecological Hazard of Chemicals: Inhibition of Processes of Ecological Remediation. - Doklady Biological Sciences, Vol. 385, 2002 (November), pp. 377–379. [Translated from Doklady Akademii Nauk, Vol. 385, No. 4, 2002, pp. 571–573]. https://www.researchgate.net/file.FileLoader.html?key=8408a7cfaa984764b812ce79c77007f2; 17. Ostroumov SA. System of principles for conservation of the biogeocenotic function and the biodiversity of filter-feeders. - Dokl Biol Sci (Doklady Biological Sciences). 2002; 383:147-150. https://www.researchgate.net/file.FileLoader.html?key=888352078b275ef40a430eb5b4d7714c; 18. Ostroumov S. A., Walz N., Rusche R. Effect of a cationic amphiphilic compound on rotifers. - Doklady Biological Sciences. 2003 (May). Vol. 390. 252-255, [ISSN 0012-4966 (Print) 1608-3105 (Online)]. https://www.researchgate.net/file.FileLoader.html?key=def6575c794b111fcc31275e853c2b15; 19. Ostroumov S.A. Anthropogenic effects on the biota: towards a new system of principles and criteria for analysis of ecological hazards. - Rivista di Biologia/Biology Forum. 2003. 96: 159-170. PMID: 12852181 [PubMed - indexed for MEDLINE] http://sites.google.com/site/ostroumovsergei/publications-1/rivista2003criteria; http://scipeople.com/uploads/materials/4389/3RB96p159Anth..Criteria.doc; www.ncbi.nlm.nih.gov/pubmed/12852181; 20. Ostroumov S. A. On the biotic self-purification of aquatic ecosystems: elements of the theory. - Doklady Biological Sciences, 2004, Vol. 396, Numbers 1-6, p. 206-211. https://www.researchgate.net/file.FileLoader.html?key=60f338228d6f3c5114d223ab81e15d3b; 21. Ostroumov S. A., Widdows J. Inhibition of mussel suspension feeding by surfactants of three classes. // Hydrobiologia. 2006. Vol. 556, No. 1. Pages: 381 – 386. DOI 10.1007/s10750-005-1200-7; http://sites.google.com/site/ostroumovsergei/publications-1/hydrobiologia2006ostwidd; http://sites.google.com/site/3surfactantsfiltrationmytilus/; http://scipeople.ru/uploads/materials/4389/_Hydrobiologia2006%20vol%20556%20No.1%20pages381-386.pdf; http://www.springerlink.com/content/7166067538534421/ 22. Ostroumov S. A. Biotic self-purification of aquatic ecosystems: from the theory to ecotechnologies. - Ecologica, 2007. vol. 15 (50), p.15-23. (ISSN 0354-3285). [http://scindeks.nb.rs/article.aspx?artid=0354-32850750015O]. 23. Ostroumov S.A., Shestakova T.V. Decreasing the measurable concentrations of Cu, Zn, Cd, and Pb in the water of the experimental systems containing Ceratophyllum demersum: The phytoremediation potential // Doklady Biological Sciences 2009, Vol. 428, No. 1, p. 444-447. http://sites.google.com/site/9dbs444/; https://www.researchgate.net/file.FileLoader.html?key=8fd8998627b86102db72c9b237c25054; 24. Ostroumov S.A. Towards the general theory of ecosystem-depended control of water quality. - Ecologica, 2009, vol. 16, No. 54, p. 25-32. http://sites.google.com/site/9enecologica16p25theory/ 25. Ostroumov S. A. Basics of the molecular-ecological mechanism of water quality formation and water self-purification.- Contemporary Problems of Ecology, 2008, Vol. 1, No. 1, p. 147-152. ISSN 1995-4255 (Print) 1995-4263 (Online); DOI 10.1134/S1995425508010177; The paper was cited and its concepts and conclusions were supported in the following publications (examples): Цитировали paper [Polyfunctional role of biodiversity in processes leading to water purification: current conceptualizations and concluding remarks. - Hydrobiologia; (Springer Netherlands),ISSN 0018-8158 (Print) 1573-5117 (Online), Volume 469, Numbers 1-3 / 2002 (February); p. 203-204; DOI 10.1023/A:1015555022737]; Cited by: Water Quality of Effluent-dominated Ecosystems: Ecotoxicological, Hydrological, and Management Considerations. - Hydrobiologia (Springer Netherlands); ISSN 0018-8158 (Print) 1573-5117 (Online); Volume 556, Number 1, 2006 (February); p. 365-379; DOI 10.1007/s10750-004-0189-7; Bryan W. Brooks 1 , Timothy M. Riley 2, and Ritchie D. Taylor 3; (1) Department of Environmental Studies, Center for Reservoir and Aquatic Systems Research, Baylor University, One Bear Place # 97266, Waco, Texas 76798, USA; (2) Barton Springs / Edwards Aquifer Conservation District, 1124 Regal Row, Austin, Texas 78748, USA; (3) Department of Public Health, Centre for Water Resource Studies, Western Kentucky University, 1 Big Red Way, EST 437, Bowling Green, Kentucky 42101, USA; - - - - ---------------------------- Integrated outdoor culture of two estuarine macroalgae as biofilters for dissolved …; I. Hernandez, M.A. Fernández-Engo, J.L. Pérez- … - Journal of Applied …, 2005 - Springer; Ignacio Hernández ∗ , M. Angeles Fernández-Engo, J. Lucas Pérez-Lloréns & Juan J. Vergara; Area de Ecologıa, Universidad de Cádiz, Facultad de Ciencias del Mar y Ambientales, 11510 Puerto Real, Cádiz, Spain; ∗ Author for correspondence: e-mail: ignacio.hernandez@uca.es - - - -------------------- Medit. Mar. Sci., 8/2, 2007, 19-32; Mediterranean Marine Science; Volume 8/2, 2007, 19-32; Identification of the self-purification stretches of the Pinios River, Central Greece; Y. CHATZINIKOLAOU 1, 2 and M. LAZARIDOU 1 1Department of Zoology, School of Biology, Faculty of Sciences, Aristotle University of Thessaloniki, Greece; 2Institute of Inland Waters, Hellenic Centre for Marine Research, 46.7 km Athinon - Souniou Av., 190 13, P.O. Box 712, Anavissos, Hellas; - - - ---------------------------------------- Assessment of ecosystem health of tropical shallow waterbodies in eastern India using turbulence model Authors: N. R. Samal a; A. Mazumdar b; K. D. Joumlhnk c; F. Peeters d Affiliations: a Dept. of Civil Engineering, National Institute of Technology Durgapur, Durgapur, West Bengal, India; b School of Water Resources Engineering, Jadavpur University, Kolkata, West Bengal, India; c Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Neuglobsow, Germany d Limnologisches Institut, University of Konstanz, Konstanz, Germany; DOI: 10.1080/14634980902908589; Published in: Journal Aquatic Ecosystem Health & Management, Volume 12, Issue 2 April 2009 , pages 215 – 225; - - - ------- Intra-basin spatial approach on pollution load estimation in a large Mediterranean … Y. Chatzinikolaou, A. Ioannou, M. Lazaridou - Desalination, 2010; ** The institutions, affiliation of the authors of the paper [Science–policy challenges for biodiversity, public health and urbanization: examples from Belgium. 2013 Environ. Res. Lett.] that cited the article (Ostroumov, 2002): 1. Research Institute for Nature and Forest (INBO), Brussels, Belgium; 2 Belgian Biodiversity Platform, Belgium (www.biodiversity.be/); 3 University of Antwerp, Antwerp, Belgium; 4 Namur Center for Complex Systems, University of Namur, Belgium; 5 Co-Operation On Health And Biodiversity (COHAB), COHAB Initiative Secretariat, Ireland; 6 Universite libre de Bruxelles, Belgium; 7 Federal Public Service Health, Food Chain Safety and Environment, Eurostation II, Brussels, Belgium; 8 Agriculture and Veterinary Intelligence and Analysis (Avia-GIS), Belgium; 9 Uppsala University, Uppsala, Sweden; 10 Agency for Nature and Forest (ANB), Brussels, Belgium; 11 Royal Belgian Institute of Natural Sciences (RBINS), Brussels, Belgium; 12 Research Institute for Agriculture and Fisheries (ILVO), Belgium; 13 Department of Geography, Universite catholique de Louvain, Belgium; 14 DIVERSITAS, c/o Museum National d’Histoire Naturelle, Paris, France; 15 Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany; 16 Maastricht University, The Netherlands; 17 Division of Agricultural and Food Economics, K U Leuven, Heverlee, Belgium (Katholieke Universiteit Leuven: the oldest catholic university of the world. It's located in Heverlee, near Leuven); 18 Ghent University, Belgium; 19 Czech University of Life Sciences Prague, Czech Republic; 20 Ecology, Evolution and Biodiversity Conservation Section, K U Leuven, Belgium; 21 Military Hospital Queen Astrid, Bruynstraat 1, 1120 Neder-over-Heembeek, Belgium; 22 Institute for Environmental Management and Land-use Planning, Universite libre de Bruxelles, ´Bruxelles, Belgium; --------- Examples of citation of the series of the ecology publications of this author: The publications on environmental science, ecology were mentioned, cited at leading world universities, in publications and on their web sites; selected examples only; http://5bio5.blogspot.com/2014/07/citation-publications-on-environmental.html EVIDENCE OF MERIT: Note from the web (Altmetric) on May 1, 2016: ** In the top 25% of all research outputs scored by Altmetric; Among the highest-scoring outputs from this source (#27 of 1,186); High score compared to outputs of the same age (89th percentile); High score compared to outputs of the same age and source (85th percentile); ** Citation: This paper was cited in: Uranium and thorium determination in water ecosystem components by neutron activation analysis. Published in journal: «Water: chemistry and ecology» № 10 / 2009 , p. 36-40. Ostroumov S.A. , Kolesov G.M. http://5bio5.blogspot.com/2016/09/uranium-and-thorium-determination-in.html; **
Article
Anthropogenic effects on the biota: Towards a new system of principles and criteria for analysis of ecological hazards. January 2003, Rivista di biologia 96(1):159-170; https://www.researchgate.net/publication/200581960; The currently accepted system of criteria for evaluating environmental and ecological hazards of man-made chemicals (pollutants) is vulnerable to criticism. In this paper, a new concept of the system of approaches towards criteria for evaluating the ecological hazard from man-made impact is proposed. It is suggested to assess the man-made impacts (including effects of pollutants and xenobiotics) on the biota according to the following four levels of disturbance in biological and ecological systems. (1) the level of individual responses, (2) the level of aggregated responses of groups of organisms, (3) the level of stability and integrity of the ecosystem; (4) the level of contributions of the ecosystem to biospheric processes. On the basis of the author experimental studies, an example is given of bow to apply the proposed approach and the system of criteria to the analysis of concrete experimental data. To exemplify the efficiency of the proposed approach, it is shown how to use it to analyze new data on effects of a synthetic surfactant on water filtering, by bivalves. It is concluded that the proposed approach will be helpful in better assessing environmental and ecological hazards from anthropogenic effects on biota, including effects of man-made chemicals polluting ecosystems. A related, relevant article of the same author: Criteria of ecological hazards due to anthropogenic effects on the biota: searching for a system; Doklady Biological Sciences, Vol. 371, P. 204-206. https://www.researchgate.net/publication/215905990 ; https://www.researchgate.net/publication/12483844 ; https://www.researchgate.net/profile/Sergei_Ostroumov/publication/12483844 ;
Article
New environmental hazards of surfactants to plankton, zooplankton, Ostroumov S. A., Walz N., Rusche R. Effect of a cationic amphiphilic compound on rotifers. - Doklady Biological Sciences. 2003 (May). Vol. 390. 252-255; https://www.researchgate.net/publication/200578650 ; DOI 10.1023/A:1024417903077; [ISSN 0012-4966 (Print) 1608-3105 (Online)]. Keywords: ecotoxicology, negative effects, cationic surfactant, tetradecyltrimethylammonium bromide, TDTMA, filtration rate, feeding rate, zooplankton, rotifers, Brachionus calyciflorus, ** Short explanation: Effect of a Cationic Amphiphilic Compound [synthetic surfactant] on Rotifers. 2003. DOKLADY BIOLOGICAL SCIENCES. Volume: 390, p. 252; 9 citations, 11 recommendations to this ecotoxicology article: https://www.researchgate.net/publication/200578650 ; DOI: 10.1023/A:1024417903077; S. A. Ostroumov1, N. Walz2, R. Rusche2 ** 1Moscow State University; 2Institute of Freshwater Ecology and Fishery, Berlin, Germany; https://5bio5.blogspot.com/2019/06/s.html ; A short explanation: Rotifers, the aquatic invertebrate organisms, were studied in this article. They are filter - feeders (suspension-feeders). Through feeding they remove particles (including cells of algae, phytoplankton) from water. As a result, they contribute to improving water quality. Synthetic surfactants represent a new class of emerging chemical pollutants in water. ** Welfare of the biosphere depends on filter-feeders that contribute to making water clean and transparent. Important new facts on the hazard of man-made damage to the beneficial function of rotifers, which are the plankton filter-feeders, were discovered. Paper was published, in which for the first time, it was found that a chemical pollutant inhibits filtration activity of rotifers. As a chemical pollutant, a representative of synthetic surfactants was studied. The study featured an advanced technique that allows precise measurement of the filtration rate on the basis of measuring the rate of removal of algal cells from water by rotifers. The experiment was run in the following system: the two-species culture of rotifers (Brachionus calyciflorus) feeding on the algal species (Nannochloropsis limnetica; Eustigmatophyceae) was studied in a two-stage turbidostat (temperature 20 °C) as described by Walz et al. (1997) with some modifications. Dilution rate (the higher the filtration activity of rotifers, the higher the dilution rate) was monitored in the turbidostat. As a model of a chemical pollutant, the cationic surfactant tetradecyltrimethylammonium bromide (TDTMA) was added to the water of the turbidostat. On the basis of previous studies (Ostroumov, 2000), the concentration of TDTMA was 0.5 mg/L. Dynamics of the dilution rate before and after addition of the chemical was monitored. The dilution rate decreased after the addition of TDTMA. Also, a comparison of the dilution rate in the experimental turbidostat (with the surfactant) with the control turbidostat (without the chemical) was made. Under conditions of the addition of TDTMA the dilution rate was lower than in the control turbidostat. The lower dilution rate means a lower filtration and grazing activity of the population of the rotifers. The results are in accord with the hypothesis that the cationic surfactant TDTMA can inhibit the filtering activity of populations of rotifers. The results support the conclusions of previous publications, in which analogous effects of surfactants on another major group of filter-feeders (the bottom-dwelling bivalve mollusks) were discovered (Doklady of the Russian Academy of Sciences, 2001, 380, pp. 847-849; 2002, vol. 382, pp.138-141). www.springerlink.com/index/R3126462K122M13T.pdf; DOI10.1023/A:1024417903077; Key words: effects, cationic amphiphilic substance, rotifers, two-species culture, rotifers Brachionus calyciflorus, algae Nannochloropsis limnetica, turbidostat, filtration activity, cationic surfactant tetradecyltrimethylammonium bromide TDTMA, grazing activity, filtering activity of populations, filter-feeders, chemical pollution, effects of pollutants, sublethal concentration, trophic interactions, man-made effects, anthropogenic, new environmental hazards × Surfactants × Zooplankton × Plankton × Cationic Surfactants × German-Russian scientific partnership × Germany-Russia partnership × Berlin - Moscow scientific cooperation × Environmental Toxicology × Chemical Water Pollution × Hazard Assessment × New Methods; ** Comment: 'Amphiphilic compound' is a synthetic surfactant, it exemplifies an emerging pollutant of water. Rotifers are an important type of water-filtering zooplankton; they filter water, therefore the inhibitory effect that was discovered in this article is a new type of environmental hazard, which produces a new type of negative effect on water quality and aquatic ecosystem. ** This is the first article that reported the experimental results on toxicity of sublethal concentration of synthetic surfactants to rotifers, which are the second major group of species of water-filtering zooplankton, in addition to crustaceans.
Article
https://www.researchgate.net/publication/13429633_Biological_filtering; S. A. Ostroumov. Biological filtering and ecological machinery for self-purification and bioremediation in aquatic ecosystems: towards a holistic view. Rivista di Biologia. 1998. 91(2): 221-232. https://www.researchgate.net/publication/13429633 ; According to one of the approaches to the definition of criteria for the phenomenon of life, the key attribute is the ability of the system for some self-regulating and self-supporting. Part of such holistic functions of aquatic ecosystems as self-regulating and self-supporting is their cleaning the water via a multitude of various mechanisms. The goal of this paper is to present some fundamental elements of the theory of ecosystem self-purification which emphasizes the importance of the four functional biological filters that are instrumental in purification and upgrading the quality of water in aquatic ecosystems. These functional filters are: (1) direct water filtering by aquatic organisms that are filter-feeders; (2) the filter (represented mainly by communities of aquatic plants/periphyton) which prevents input of pollutants and biogenic elements (N, P) from land into water bodies; (3) the filter (represented by benthic organisms) which prevents re-entry of pollutants and biogenic elements from the bottom sediments into the water; (4) the filter (represented by microorganisms attached to particles which are suspended in the water) that provides microbiological treatment of water column. New experimental data by the author reveal the role of man-made effects on the ecological machinery which purifies water. The analysis and discussion lead to the holistic theory of the natural process of bioremediation of aquatic ecosystems.