V. O. Mokievsky

Institute of Oceanology. PP Shirshov Russian Academy of Sciences

Free-living aquatic nematodes are abundant, diverse and of general environmental importance. However, knowledge of species distributions of both marine and freshwater nematodes is sparse. Species distribution data are crucial for evaluating environmental impacts from human activities and to conduct integrated nematode community assessments. Basic k...

http://ssrn.com/abstract=4957730 Recently, global climate change and environmental pollution led to changes in macrozoobenthos communities. Existing approaches to defining and mapping communities are extremely diverse. Consequently, assessment of both temporal changes and spatial variability depends greatly on the approach used. This paper proposes...

As an expansion of a time-series study on meiobenthos in the Arctic deep sea, the diversity of free-living nematode communities along nine stations along a bathymetric transect was investigated morphologically in taxonomic and functional regards (feeding-type composition, life-history traits, tail-shape composition) and compared with previous studi...

Two new nematode species of the order Monhysterida, found in coral reefs on the coast of Vietnam, are described and illustrated. Corononema vulgare sp. n. morphology is similar to C. thai Nicholas & Stewart, 1995 but differs from it by the shorter outer labial setae, shorter tail in males, and a different shape of the guiding lateral bodies in the...

The Pechora Bay is a hydrologically and ecologically important area of the Barents Sea but there are still gaps in our knowledge of biodiversity of the area, including macrozoobenthos. In the first half of the twentieth century, the Pechora Bay was noted as a type locality for the bivalve mollusc Portlandia aestuariorum. Only a few surveys of macro...

The dataset comprises full list of species of macrozoobenthos collected from the Pechora Sea (SE Barents Sea). Grab samples were collected from 10 stations in the Pechora Bay from aboard RV Kartesh in 2020-2021. Macrobenthic invertebrates were identified with the maximum level of certainty through optical microscopy using regional taxonomic keys. A...

In the exploration of the meiofauna associated with sponges and corals in the shallows of Cuba, we investigated nine species of sponges (Demospongia), wherein 26 nematode species were revealed. Most nematode specimens (50–95% of all individuals) in all sponge samples belonged to the family Desmodoridae (order Desmodorida), followed by the family Ch...

The ten-year succession of the biofouling community inhabiting subsea engineering structures at a depth of 80-90 m was described on the basis of repeated video filming on the southwestern shelf of the Sea of Okhotsk. A general scheme of the stages of development of the macrofouling community in steps of 1-2 years has been compiled both for the inta...

The LTER (Long-Term Ecological Research) deep-sea observatory HAUSGARTEN in the Fram Strait has been established in 1999 to detect and track the impact of large-scale environmental changes in the transition zone between the North Atlantic and the central Arctic Ocean. For this study, benthic meiofauna and various biogenic parameters were sampled at...

In the Russian Arctic seas and adjacent areas of the Arctic basin, 120 sites of siboglinid records are currently known. Individuals belonging to 15 species have been collected. The largest number (49.2%) of records were made in the Barents Sea, followed by the Laptev Sea (37.5%) and the Arctic basin (10 records; 8.3%). No siboglinids have been repo...

Russian version of this article

Microplastics have been declared a threat to ocean health and status under the United Nations Sustainable Development Goal (SDG) 14 Target 14.1. Microplastics are bioavailable for a wide range of marine organisms and may cause adverse physiological and biochemical effects, including decreased growth and energy intake, and impaired reproduction. Acc...

Despite a large number of studies, a detailed overall picture of benthic communities zonation in the Arctic fjords is currently lacking. Our study aimed to find out whether there is a universal model for the distribution of benthic communities based on the structural features of the fjords. We examined benthic macrofaunal communities in fjords with...

Human expansion to the sea gathers pace and so does the diversity of new substrates exposed to biofouling. Various subsea production structures often serve unintentionally as artificial reefs attracting dozens of fouling species. In this presentation we are showing what a 10-year-old succession in a biofouling community on the subsea production com...

Biofouling of artificial substrates is a well-known phenomenon that can negatively impact offshore industry operations as well as data collection in the ocean. Fouling communities worldwide have mostly been studied within the top 50 m of the ocean surface, while biofouling below this depth remains largely underreported. Existing methods used to stu...

y the beginning of the 21st century, as a result of growing human activities, the ecosystems of the Black Sea underwent significant changes. The northeastern part of the Black Sea coast became overpopulated. Eutrophication, overfishing, sediment damping, bottom dredging, climate warming, and alien species introduction, all resulted in the plankton...

Краткий обзор современных исследований многолетней динамики донных сообществ, основных концепций и моделей динамики бентоса предваряет специальный выпуск журнала, содержащий результаты работ по изучению бентосных сообществ в различных масштабах пространства и времени.

Expanding human activities alongside climate change, the introduction of invasive species and water contamination pose multiple threats to the unique marine ecosystems of the Pechora Sea in the Russian Arctic. Baseline data on biodiversity and responses to environmental change are urgently needed. Benthic decapod crustaceans are globally distribute...

Биогенная трансформация подводных ландшафтов-один из ведущих факторов, определяющих современный облик дна. Задача морской биогеоморфологии - изучение всех аспектов биологической модификации геоморфологических процессов, т.е. описание, систематизация и количественная оценка влияния биоты на формирование донного рельефа. В обзоре систематизированы и...

The present study examines the effects of experimentally generated disturbance on bathyal nematode communities at the LTER (Long-Term Ecological Research) observatory HAUSGARTEN, situated in the Fram Strait, between Greenland and Svalbard. In order to understand the complex interactions between the biota and environmental perturbations we deployed...

This study was carried out in the Yenisei estuary and in the adjacent part of the Kara Sea shelf. We analyzed and compared the distribution patterns of the different benthic taxa and size classes (micro-, meio-, macro- and megabenthos) along a pronounced gradient of environmental factors. Four ecological zones were distinguished based on certain en...

• The Atlantic walrus, Odobenus rosmarus rosmarus , forms a herd of nearly 4,000 heads in the Pechora Sea (south‐eastern Barents Sea). The Near Threatened status of O. rosmarus rosmarus and the relative isolation of the Pechora Sea population, as well as the potential impacts of human activities in the area, make it important to characterize key ha...

The species composition and structure of bottom communities with a predominance of bivalve mollusks of the genus Portlandia, which are widespread on the shelf of the Russian Arctic, were analyzed. Molecular genetic analysis confirmed that Portlandia aestuariorum and P. arctica are valid species; it had been shown that all P. arctica tested from dif...

Проанализирован видовой состав и структура донных сообществ с преобладанием двустворчатых моллюсков рода Portlandia, широко распространенных на шельфе Российской Арктики. Молекулярно-генетический анализ подтвердил самостоятельность видов Portlandia aestuariorum и P. arctica и показал, что все образцы P. arctica из разных регионов принадлежат к одно...

Bài báo chia sẻ cách khai thác và xử lí ảnh vệ tinh đa thời gian trong đánh giá biến động diện tích rừng. Tư liệu ảnh viễn thám Landsat 5 và Landsat 8 được sử dụng để đánh giá biến động diện tích rừng ngập mặn (RNM) tỉnh Trà Vinh giai đoạn 1988-2018. Kết quả giải đoán ảnh viễn thám năm 1988, năm 2018 và kết quả chồng xếp các bản đồ nói trên cho thấ...

The Velikaya Salma Strait is part of a fiard, typical of the Kandalaksha Gulf of the White Sea. Seabed topography, landscapes and bottom sediments were studied in the area of 35.12 km2 (depths of 10-120 m) using geophysical methods, geological sampling and visual observations. Macrobenthos distribution was sampled at 15-60 m depth and studied using...

The snow crab Chionoecetes opilio is an important commercial species that established a non-indigenous self-sustaining population in the Barents region. Bycatch of the snow crab was recorded for the first time in 1996 in the Barents Sea, and later in 2003 it was also found in the south-eastern part of the Barents Sea, the Pechora Sea, thereafter fo...

Macrozoobenthic communities provide vital ecosystem services including habitats and foraging resources for other species in all marine ecosystems. Although macrozoobenthos of deeper parts of the Pechora Sea (SE Barents Sea) have been studied in more detail, there is a lack of research in shallow waters of the Pechora Bay. The study area lies within...

Velikaya Salma Strait is a part of fiard [1, 2], typical of features associated with Kandalaksha Bay of the White Sea [3, 5]. Bathymetry, subaquatic landscapes, and sediment were investigated within an area of 35.12 km2, at depths ranging from 10 to 120 m by means of geophysical, geological, and visual observations. The set of geophysical methods u...

Regular biological observations of the deep sea bottom fauna are very important for understanding the role benthic biota plays in ocean ecosystems. Temporal variability in macrobenthos structure is usually studied in terms of general community characteristics including density, biomass and diversity. In this investigation, we also focused on the sp...

The dominance of one particular species (or species of one genera) in the geographically remote communities was thoroughly described by Gunnar Thorson (Thorson, 1958) in his theory of parallel communities. While studying soft-bottom macrobenthic associations of Russian Arctic we discovered a somewhat similar pattern. А bivalve protobranchian mollus...

An assessment of the presentability of the biotopes and benthic communities of the northwestern part of the Utrish Nature Reserve marine area for the Caucasian Black Sea coast has been conducted. The literary and original data on the state of benthos in the area from the Kerch Strait to Adler were examined. The studied area of the Utrish Natural Re...

Research Infrastructures (RIs) are facilities, resources and services used by the scientific community to conduct research and foster innovation. LifeWatch ERIC has developed various virtual research environments, which include many virtual laboratories (vLabs) offering high computational capacity and comprehensive collaborative platforms that supp...

Research Infrastructures (RIs) are facilities, resources and services used by the scientific community to conduct research and foster innovation. LifeWatch ERIC has developed various virtual research environments, which include many virtual laboratories (vLabs) offering high computational capacity and comprehensive collaborative platforms that supp...

Research Infrastructures (RIs) are facilities, resources and services used by the scientific community to conduct research and foster innovation. LifeWatch ERIC has developed various virtual research environments, which include many virtual laboratories (vLabs) offering high computational capacity and comprehensive collaborative platforms that supp...

The quantitative characteristics and spatial distribution of the meiobenthos in Baidaratskaya Bay (Kara sea) were analyzed based on data collected in 1994–2007. The extremely high density of the meiobenthos (up to 8121 ind/10 cm2, average 2318 ind/10 cm2) makes it possible to consider Baidaratskaya Bay among the most productive Arctic regions. The...

Benthic fauna in Tsivolki Bay (Novaya Zemlya Archipelago, Kara Sea) has been studied during the voyage of the R/V Professor Shtokman in 2013 and 2014. A peculiar feature of the bay is the presence of the Serp i Molot glacier in its inner part, which determines the extremely high content of suspended particles in the water column. The bay is divided...

The quantitative characteristics and the spatial distribution of meiobenthos in the Baydaratskaya Bay (the Kara sea) were analysed on the basis of the data collected in 1994–2007 yrs. The extremely hight density of meiobenthos (up to 8121 ind/10 cm2, the average is 2318 ind/10 cm2) allows to consider the Baydaratskaya Bay among the most productive...

Издание состоит из шести тематических глав по физической географии, океанологии, гидрометеорологии, фауне и экологии, истории исследований и экономической освоенности акватории моря Лаптевых и прилегающих территорий. В атласе отражена подробная информация о типизации берегов моря Лаптевых, а также приведены актуальные сведения о морских млекопитающ...

Nemys, the online nematode biodiversity information system erected from the filing cabinet at Ghent University (Belgium) in 1998, is now integrated into the World Register of Marine Species (WoRMS) hosted at the Flanders Marine Institute (VLIZ). This transfer was accompanied by the appointment of an international editor community consisting of expe...

Spatial distribution patterns of benthic organisms are the focus of various faunal marine studies. However, data on horizontal and bathymetric distribution of the deep-sea macrofauna are still scattered and incomplete, and conclusions are usually based on a low number of samples. Spatial distribution of benthic macrofauna was studied based on the m...

The results of quantitative sampling of Babye More benthos in 2013 allowed to built the general pattern of distribution of sea floor communities in this water-body. Changes in species composition within last 80 years were investigated. A weak succession was considered as a reason of the process mentioned. The White Sea scoop inlets should be protec...

Издание состоит из шести тематических глав по физической географии, океанологии, гидрометеорологии, фауне, экологии, истории исследований и экономической освоенности акватории Карского моря и прилегающих территорий. В атласе отражена подробная информация о типизации берегов Карского моря, а также приведены актуальные сведения о морских млекопитающи...

Based on visual observations in the Nyegga (Norwegian Sea) methane seep area we defined arbitrary boundaries and defined the following types of microbiotopes: the siboglinid field, bacterial mat, and background sediment. The metazoan meiobenthos consisted of 14 major taxa; the Nematoda dominated at seven of the eight stations. The taxonomic diversi...

During 2009-2012 stocks of the bivalve Arctica islandica (Linnaeus, 1767) (Ocean quahog) in Kandalaksha Bay (the White Sea) has been assessed using a side-scan sonar, grab sampling and underwater photo imaging. Structurally uniform localities were highlighted on the basis of side-scan signal. Each type of a signal reflects combination of sediment t...

На основании визуальных наблюдений в районе метановых выходов Ньегга (Норвежское море) были про- ведены условные границы и выделены следующие типы микробиотопов: поля сибоглинид, бактериальный мат и фоновый осадок. Многоклеточный мейобентос был представлен 14 крупными таксонами; на семи станциях из восьми доминировали Nematoda. Таксономическое разн...

The age structure of a dense settlement of Arctica islandica (Bivalvia) near Vysokii Island (Rugozerskaya Guba (bay)) of the White Sea is described. The data collected by trawling in 2003, 2006-2007 and grab sampling in 2009-2011 are summarized. The A. islandica community in the Rugozerskaya Guba was first described in 1953-1959, but to date, no re...

The system of protected areas of the Russian Federation includes nature reserves, wildlife sanctuaries, national parks and natural monuments, and other categories of objects. The report discusses the reserves and, to a lesser extent, national parks and federal wildlife preserves, as soon as they are include in system of marine and coastal protected...

The pdf file of this paper is in Russian. To purchase the paper in English, order SPE-166961-MS. Abstract The system of protected areas of the Russian Federation includes nature reserves, wildlife sanctuaries, national parks and natural monuments, and other categories of objects. The report discusses the reserves and, to a lesser extent, national...

Nowadays problems of ecological and geotechnical investigations are emphasized on. A lot of scientists both mapping bottom sediments and trying to reconstruct complex, multi-component seabed system, which include biological factors either. For example, geophysical data is successfully used to evaluate contrasting biological objects on the bottom, s...

Effects of increased near-bottom flow velocities on the sedimentary environment and its associated small biota were studied in a long-term in situ experiment at 2500 m water depth at the Deep-Sea Observatory HAUSGARTEN in the eastern Fram Strait. In 2003, the Remotely Operated Vehicle (ROV) “Victor 6000” was used to install a stainless steel flume...

The shallow-water nematodes of the White Sea are relatively well studied; however, information on the nematode fauna inhabiting the deepest part of this sea is very scarce. The composition of the nematode assemblages (at species and genus level) was studied in samples collected during four sampling occasions in the deepest part of the Kandalaksha D...

In spite of the fact that shallow-water meiobenthos of the White Sea is a relatively well studied, the information on meiobenthic fauna from the deepest part of this sea is still very scanty. This study represents the first major study of the meiobenthos from the deep White Sea. The composition of the meiobenthic community, density and vertical dis...

Meiobenthic studies were performed in an intertidal area in the Be River estuary (Nha Trang Bay, Vietnam). The study area is an area of riverine-type mangroves that have been heavily damaged by human impacts, including timber cutting and waste. Three biotopes are situated in the middle intertidal zone: a fringe of Rhizophora stylosa, a bush area co...

The Håkon Mosby Mud Volcano (HMMV) is a methane seep that is densely populated by the bacteria Beggiatoa spp. as well as by tubeworms of the Family Siboglinidae. Analyses of samples from seven stations located in five different habitats (bare sediments, bacterial mats, siboglinid fields, sediments with small patches of siboglinids and areas of ‘nor...

The taxonomic composition of meiobenthos with special reference to free-living nematodes is described for the Large Aral Sea at the intermediate stage of desiccation (year 2003). Water salinity at the time of sampling was about 89‰ meiobenthos was collected quantitatively at depths of 10 and 15 m. Twelve species of free-living nematodes were found,...

The results of meiobenthic surveys undertaken in 1991, 1999, and 2005 off the Caucasian coasts of the Black Sea are presented. During the period of 1991 to 1999, the number of free-living nematodes increased significantly at all the sampling stations. The mean nematode abundance values