Questions related to Aquatic Ecosystems
This question is an extension and an attempt join the following papers:
It also aims to advance a decade long effort to formulate and articulate a new theory of learning as initiated by this visual essay/ research report:
Commonalities Between Aristotle's Eudaimonia & Zhuangzi´s Dao
Eudaimonia in ancient Greek philosophy and the Dao (Tao) in Chinese philosophy, particularly in Daoism (Taoism), share some similarities in their overarching themes and perspectives on living a meaningful and fulfilling life.
However, they arise from distinct cultural, philosophical, and historical contexts. Here are some comparisons between Eudaimonia and the Dao:
Harmony with Nature:
Eudaimonia: In Greek philosophy, living in harmony with nature is associated with the idea of aligning one's life with the order of the cosmos and with reason. It involves recognizing and fulfilling one's potential as a rational being.
Dao: Daoism emphasizes harmony with the Dao, which is often described as the fundamental principle or force that underlies and unifies the universe. Living in accordance with the Dao involves attuning oneself to the natural order and rhythms of existence.
Virtue and Conduct:
Eudaimonia: Virtue is a central component of Eudaimonia, and philosophers like Aristotle identified specific virtues (e.g., courage, wisdom, justice) as essential for a flourishing life.
Dao: Daoism also values virtues, but it often emphasizes a more spontaneous and natural expression of virtue. Virtuous conduct is seen as flowing from being in harmony with the Dao rather than being rigidly prescribed.
Non-Striving and Wu Wei:
Eudaimonia: While Greek philosophy emphasizes the importance of virtuous action and the development of one's potential, it doesn't explicitly advocate a concept similar to Daoism's wu wei (non-action or non-striving).
Dao: Wu wei is a central concept in Daoism, suggesting that one should act in accordance with the natural flow of the Dao, without unnecessary effort or force. It involves spontaneous and effortless action, aligning with the Dao's inherent order.
Individual vs. Cosmic Perspective:
Eudaimonia: The focus in Greek philosophy is often on individual flourishing and the development of personal virtues within the context of the polis (city-state) and social life.
Dao: Daoism often takes a more cosmic and holistic perspective, emphasizing the interconnectedness of all things. The Dao is not just a personal path to follow but a universal principle that permeates everything.
Ethics and Morality:
Eudaimonia: Greek philosophy, particularly in the ethical teachings of philosophers like Aristotle, provides a systematic framework for moral reasoning and the cultivation of virtues.
Dao: Daoism, while valuing moral conduct, tends to approach ethics in a more intuitive and context-dependent manner, with an emphasis on spontaneity and responsiveness to the situation.
The Holobiont through the Worldviews of Aristotle & Zhuangzi
The holobiont is a biological concept that refers to a host organism and its associated community of symbiotic microorganisms, collectively known as the microbiota. This concept challenges the traditional view of an organism as an individual and emphasizes the interconnectedness between a host and its microbial inhabitants. Let's explore how the holobiont concept might relate to the synthesis of Eudaimonia and Dao:
- Interconnectedness and Harmony:The holobiont emphasizes the interdependence of the host organism and its microbiota. Similarly, in the synthesis of Eudaimonia and Dao, there can be an emphasis on interconnectedness and harmony, recognizing the symbiotic relationship between the individual's virtues and the broader cosmic order.
- Microbial Diversity and Virtuous Living:Just as a diverse microbiota contributes to the health of the holobiont, a diversity of virtues and perspectives might contribute to the well-being of an individual pursuing Eudaimonia. The synthesis could involve embracing a variety of virtues and ethical principles to create a more resilient and balanced life.
- Adaptability and Wu Wei:The holobiont must adapt to changes in its environment, and the Daoist concept of Wu Wei involves acting in harmony with the natural flow. The synthesis could encourage adaptability and the ability to navigate life's challenges with a sense of flow and spontaneity.
- Holistic Well-Being:The health of the holobiont is not solely determined by the host organism but by the balance and well-being of the entire community. In the synthesis, holistic well-being could involve not only individual virtues but also the well-being of the broader community and environment.
- Balance of Individual and Collective:The holobiont concept challenges the notion of an organism as an isolated individual. Similarly, the synthesis could challenge an overly individualistic approach to Eudaimonia by recognizing the importance of the collective and the interconnectedness of individuals within a larger societal and cosmic context.
- Microbial Influence on Behavior:The microbiota can influence the behavior and health of the host organism. In the synthesis, there might be an acknowledgment that external factors, including cultural and environmental influences, play a role in shaping individual virtues and ethical choices.
- Cultivation of Inner and Outer Ecosystems:The holobiont concept encourages consideration of both the inner and outer ecosystems. Similarly, the synthesis could involve the cultivation of inner virtues (Eudaimonia) and an awareness of one's place in the larger cosmic and societal ecosystem (Dao).
- Dynamic Equilibrium:The holobiont exists in a dynamic equilibrium with its microbiota. In the synthesis, there could be an appreciation for the dynamic nature of virtue ethics and the need for ongoing self-reflection and adaptation in the pursuit of well-being.
In essence, the holobiont concept provides a biological metaphor that can be extended to philosophical and ethical considerations. It encourages a more interconnected and holistic perspective, aligning well with the synthesis of Eudaimonia and Dao that seeks to integrate individual virtues with a broader understanding of cosmic harmony and balance.
The Liquid (Holobiont) Learner in a Holistic Learning Theory: The Symbiotic Path to Flourishing Wisdom
To integrate insights from Eudaimonia, Dao, and the holobiont concept to propose a holistic theory of learning that goes beyond traditional educational paradigms. This theory posits that learning is not merely an individual cognitive process but a symbiotic relationship between the learner, their virtues, the cosmic order (Dao), and the broader learning ecosystem.
- Eudaimonic Virtue Learning: Learning is seen as the cultivation of virtues that contribute to individual flourishing. Just as the holobiont thrives on microbial diversity, learners flourish by embracing a diversity of virtues—wisdom, courage, compassion, and resilience. The goal is not just knowledge acquisition but the development of a virtuous character.
- Daoist Harmony in Learning: The Daoist concept of Wu Wei, or effortless action, is applied to the learning process. Learners are encouraged to align with the natural flow of curiosity, exploration, and understanding. Learning becomes a harmonious dance with the cosmic order, emphasizing spontaneity, adaptability, and a balance between active pursuit and receptive contemplation.
- Interconnected Learning Ecosystem: Borrowing from the holobiont concept, the Liquid (Holobiont) Learner theory recognises that learning is a collaborative endeavor involving not only the individual learner but also the learning environment, peers, mentors, and cultural influences. Just as the holobiont exists in dynamic equilibrium, learning thrives when there is a balanced exchange of ideas, perspectives, and experiences within the learning ecosystem.
- Cultivation of Inner and Outer Knowledge: Similar to the Daoist emphasis on inner virtues, the Liquid (Holobiont) theory encourages the cultivation of inner knowledge—self-awareness, emotional intelligence, and ethical understanding. This inner wisdom complements the acquisition of external knowledge, fostering a well-rounded and balanced approach to learning.
- Adaptive Learning Resilience: Acknowledging the dynamic nature of both the Holobiont and Dao, the Liquid Learner theory promotes adaptive learning resilience. Learners are encouraged to adapt to changing circumstances, embrace the unexpected, and find opportunities for growth in challenges. The learning journey is viewed as a continual process of adaptation and evolution.
- Holistic Well-Being in Learning: Holistic well-being is a central goal of our learning theory. Beyond academic achievement, the theory emphasizes the well-being of the learner as an individual and their contribution to the well-being of the learning community. Learning becomes a transformative journey that enhances not only cognitive abilities but also emotional, ethical, and social dimensions of well-being.
Thus the Liquid (Holobiont) Learner theory envisions a symbiotic relationship between the learner, virtues, cosmic harmony, and the learning ecosystem. It embraces diversity, spontaneity, and adaptability, fostering not just the accumulation of knowledge but the development of virtuous individuals who contribute to the flourishing of the broader learning community and the cosmic order.
Please see also:
What is an aquatic ecosystem primary productivity most dependent on and which region has the highest productivity in the aquatic ecosystem?
Which is the highest biomass in aquatic ecosystem and which ecosystem type has the highest productivity and the highest accumulation of biomass?
Is the pyramid of biomass always upright in an aquatic ecosystem and how is a pyramid of biomass connected to an ecosystem?
Which abiotic factors are necessary for plants to survive in an aquatic ecosystem and abiotic factors in an environment the biotic factors?
What are the abiotic and biotic factors of water necessary for fish life and important abiotic features of an aquatic ecosystem?
What is meant by ecosystem health?
Give an idea of ecosystem health profile.
State the indicators of ecosystem health?
How health deterioration is diagnosed?
How can health of an ecosystem be recovered?
What protective and ameliorative or therapeutic strategies can be adopted?
How indicators can tell about the good health, the bad health, deteriorating health or the recovering health?
Metal nanoparticles are showing promise in tackling different problems in different domains of environment. How they can be used in aquatic ecosystems? What are different likely interactions? What may the possible toxic effects on different ecosystem components (planktons, bacteria, macrophytes and fish)? How can we track the ecotoxicological linkages? How could we manage metal nanoparticles for positive (beneficial) uses and avert the adverse/untoward consequences?
RG friends and researchers you all are welcome to participate and help to promote a sustained brainstorming on pros and cons of apllyting metal nanoparticles in aquatic systems like, ponds, lakes, rivers, etc.
Dead Sea of Jordan has its own novelty by prevailing as the only natural waterbody of earth with viability to float. Although there are several inland water bodies like Caspian Sea and Black Sea, what is the main reason for the unusual salinity of Dead Sea? Is the origin of Dead Sea - A scientific marvel or myth?
If the comprehensive answer is found, it would help the several branches of science.
Aquatic ecosystems such as freshwater, estuaries, and ocean waters have all been shown to contain microplastics. The consumption of food sourced from these habitats by humans is also put at risk by the presence of microplastic in aquatic systems, which also endangers aquatic creatures. There are several methods/strategies for removing microplastic from water sources across the world, including microbial degradation, thermal treatment, and physical approaches including adsorption and filtration. Which procedures/strategies are most efficient for removing microplastic from aquatic environments?
Dear RG community members,
having in mind that I have really low rate of knowledge on carbon sequestration, I will need your help. My questaion is, which methodology and monitoring systems should be used for the calculation of carbon sequestration in wetlands?
regards from Croatia,
I thought there would be more work done on the topic; there doesn't seem to be very many papers.
At present, the measurement of greenhouse gases in aquatic ecosystem is often used in situ measurement and model simulation. I am interested in whether remote sensing can reverse the emission of greenhouse gases in aquatic ecosystem. Is there anyone who does this work? Are there any recommended articles?
I wanted to ask that if we have to develop a modelling tool to anticipate the impacts of weather extreme events on the water quality of a lake but the amount of information collected in the field is scarce. What kind of models would be better to use and which are the natural processes we should include in the models. Please guide me briefly if possible.
Globally, there are more than 45,000 large dams in operation in over 150 countries and another 1500 or so are currently under construction according to World Wildlife Fund (WWF). Dams and weirs have been built on rivers (a barrier across a river) to achieve a number of benefits including water storage, irrigation supply, drinking water, preventing floods, navigation, hydroelectricity production, and recreation etc. In recent time, most dam construction is taking place in the developing world, such as in China and India. 46 new large dams being planned or under construction in the Yangtze River basin in China; 27 in the La Plata basin in South America; 26 in the Tigris and Euphrates Basin in Turkey, Syria and Iraq. Dams are also planned on three other rivers: the Salween in China, Thailand and Myanmar, the Kizilirmak in Turkey, and the Ganges in China, Nepal, India and Bangladesh.
The development of engineering infrastructure such as dams and weirs over rivers has modified rivers ecosystems threatening the water quality (e.g. salinity, cold water pollution) and water dependent biodiversity (e.g. native fish). Dams disconnect rivers from their flood plains and wetlands, reduce water flows in rivers, and affect the migratory patterns of fish. In general, water retention by dams eliminates or reduces spring runoff or flood pulses that often play a critical role in maintaining downstream riparian and wetland ecosystems including the lifecycle of fish. Older dams release water that is stored at the bottom of the dam, which is typically colder and adversely affects species adapted to warmer temperatures. Such an effect is sometime referred to as ‘cold water pollution’. The construction of a dam on a river can block or delay upstream fish migration between feeding and breeding zones and thus may contribute to the decline and even the extinction of species. As a consequence of dams, for example, some unique species and habitats are/will be threatened including freshwater native fish, river dolphins, porpoises and water birds. One estimate reveals that dams and associated uses of water have altered two-thirds of the world’s major rivers.
In Australia, the Federal Government Department (Commonwealth Environmental Water Office) has acquired/is acquiring water with the goals/objectives to increase water flows in rivers and wetlands (commonwealth environmental water). Reduced flows in the Murray Darling Basin (MDB) have already caused environmental problems (increased salinity, increased algal blooms/cyanobacterial blooms, decline in native fish and bird populations and poor wetland health). This environmental water has been/is being recovered through water saving infrastructure upgrades, water purchases (direct buybacks of water entitlements from irrigators) and other water recovery programmes in order to protect or restore the environmental assets of the MDB. The environmental water will help protect and restore the resilience of the MDB’s rivers, wetlands, floodplains, lakes and red gum forests, together with the plants and animals that depend on them. In a number of countries (e.g. third world countries), people may not be familiar with environmental water or environmental flows and a need for environmental water for biodiversity.
Question: Do you agree that there is a need for environmental water/environmental flows to protect biodiversity where dams have been built or to be built? If so, how can we achieve a balance between water usages for consumptive purposes (drinking water, industry and irrigated agriculture) and meeting the demand for environmental flows for smooth functioning of river ecosystems and river biodiversity?
I need to know Pollutants that are washed to the fresh water ecosystem, and bring disturbance to the fresh water species. Moreover, I wanted to understand the freshwater ecosystem based on regions: African freshwater, Asian freshwater, Latin American freshwater, North American Freshwater, Australian freshwater ecosystem. Generally, my aspiration is to know the state of global freshwater ecosystem. Hence, anyone who can supply me relevant materials on this concept is well come.
Please share your thoughts with or against and why, there is no one perfect answer to this question. Since aquatic ponds could introduce weedy plants and due to the high rate of evaporation salinization could occur over a long period of time.
In many conservatories around the world, as well as in many organic-farms, insecticidal soaps (potassium salts of fatty acids) are widely used to combat aphids, mealybugs, mites etc. They are considered safe to mammalians and are prioritized instead of chemicals.
Very little to no information can actually be found whether the soaps may be toxic to amphibians. Can anyone help us on this matter? An eductaed guess would tell me that the thin film created by the sopa on aquatic enviroment as well as, presumably, on the skin of the amphibians would cause significan damage.
Microplastics have been found in land, air, freshwater, effluent from a wastewater treatment plant and even in tap water and bottled water. The small plastic particles (less than 5 mm) pose a threat to the freshwater and marine ecosystem including fish and mussels due to potential adsorption of hydrophobic contaminants like polychlorinated biphenyls (PCBs) into the body of microplastics depending on size and shape of particles. The land application of sewage sludge along with the sludge produced from water treatment process (sedimentation tank) is a large source of microplastics pollution in freshwater. The run off resulted from precipitation and high wind cause transport of microplastics from a place far from where it is produced. This is an acute problem, particularly for the regions of the world where sewage is not even treated up to the secondary treatment level and the target effluent quality is poorly managed. So, the question is: can microplastics be controlled in a watershed and if so, how?
This species was isolated from freshwater pond here in Perlis, Malaysia. Unfortunately, I'm not certain about the name for this species. The size of this microalgae in range 2.5-3.5 micron. Is this Oocystis sp.?
Hello everyone, greeting, hope you are doing well, I need some significant information, which is related to the use of silver nanoparticles in the aquatic ecosystem. My question is this when we apply different concentrations of Ag-NPs on Ciliates to check the toxicity of silver nanoparticles. We know that silver nanoparticles kill the ciliates, disturb the aquatic ecosystem. Anxiously waiting for your kind response. Thank You
Md. Masud Parvez.
The presence, prevalence, occurrence frequency and parasitization frequency of different parasites of fishes vary depending on water quality status. Possibly water temperature, dissolved oxygen, BOD, COD influence the which, where, how much parasites prevail and parasitize fish host. Further fish health.is impacted by water quality. Degraded physicochemical regime adversely affect fish health and fish subject to multiple stressors are much more vulnerable to parasitic infestation. Insightful discussions are welcome to unveil the interactionbetween/among degraded water quality factors and parasites as well as between/among multiple stressor induced ill health related biological, haematological, immunological, biochemical parameters. Also share your views about biochemical/stress markers can be counted as indicative to those interactions
As we know, the temperature is directly proportional to pH. It means low temperature and low pH during the morning and high temperature and high pH during the evening in an aquatic ecosystem/pond/outdoor cemented tanks. But, I observed an inverse relationship between temperature and pH in indoor tanks in wet-lab. What is the reason for the above mentioned?
pH range for surface will be 6-8 or 5.5-8 otherwise aquatic ecosystem will be destroyed. For aquatic plant needs carbon dioxide to do photosynthesis process for their food production. But, there is no carbon dioxide at pH 8 or above in a water body. Dissolve oxygen and carbon dioxide are equally important for aquatic ecosystem.
We are planning to inventory the black and red corals growing on the Mediterranean sea bottom. I read about various methods amongst them the use of ROV with Sea bottom imaging sensors and cameras.
How to efficiently inventory Precious corals (Black, Gold & red)?
What are the most efficient gears to use for sea bottom surveying such species?
It is experimentally proved that turf algae in combination with sediment prevents the settlement of coral larvae. My field observations are contradictory to it. I observed lot of new recruits on hard substrate which has been covered with turf algae and sediment. Is there any other factor which could aid the settlement of coral larvae on a turf algal substrate?
I have analyzed the concentration of heavy metals in water as well as the intertidal sediment. I have not been able to find literature as to why the heavy metal content in sediment is more than the water. Can anyone help me? I would also like to know the permissible range for various heavy metals in marine water sample and sediment.
I intend to understand how sustainable an aquatic ecosystem is based on its plankton population. Can anyone help me with suitable methods available?
Hello, any successful/ unsuccessful examples of Artificial Floating Islands in aquatic ecosystem restoration. Recently, I visited Lake Kasumigaura, Japan. & I saw AFIs well managed there.
If anybody working in AFIs, (Lake Kasumigaura, particularly) please share how far the success rate with AFIs? & how to choose AFI plants for a particular waterbody?
Thanks in Advance!
Anila P Ajayan
I have a long term dataset which includes a variety of chemical and physical water variables sampled from an inland river. These variables include: metal loads (Al, Ca, Cd, Cu, Fe, Hg, Mg, Mn, Na, K, Pb, Ni, Zn); in Situ measurements (Electrical conductivity [EC], water temperature, air temperature, dissolved oxygen, pH); water nutrients (Ammonium, Chloride, Nitrate, Phosphate, Sulphate, Total Organic Carbon [TOC], Dissolved Organic Carbon [DOC]); and others (Acid capacity, base capacity). Some of these variables (e.g. chloride, EC, ammonium, nitrate, dissolved oxygen, phosphate, pH, sulphate, TOC and water temperature) were sampled consistently and therefore have a good resolution, whereas others (e.g. metal loads [Al, Cu, Fe, Hg, Pb, Ni, Zn], acid capacity and base capacity) were sampled less frequently and therefore do not have the same data resolution.
With that said, the focus of my research is not exactly the chemical interactions of DOC and other chemical constituents per se, but rather the interaction and effect of DOC on freshwater macroinvertebrate taxa. I do, however, understand that the interaction of DOC with other water chemical properties is of vital importance and ones needs to consider these interactions.
Therefore, I would like to know what variables (from the lists mentioned above) are the most likely to interact with DOC within the freshwater environment. This will aid in my selection of the relevant variables that I will carry into further statistical analyses.
Any help in this regard would be greatly appreciated.
The pufferfish also referred to as fugufish, blowfish or globefish is said to be the second most poisonous vertebrae on earth next to the tiny golden poison frog from Colombia. The toxin responsible for the pufferfish's deadly character is tetrodotoxin.
Two members of a family have died in Ghana today because of consuming this fish. What do you know about this fish and it's toxic element? How do we intensify public health education? Kindly share your valuable views. Thanks in advance.
please share your valuable understanding on the 'gap in knowledge' especially in freshwater phytoplankton study. How do it dis/similar with 'limitations in study'? Is there any relation with each other?
Thanks in Advance.
Anila P Ajayan
Hope everyone hear's the news that the III world war might be on the basis of hunting of freshwater resources. Right now we are moving fast in decline phase. How to restore the natural system of aquatic ecosystem? as a scientific community we can serve our next generation with somewhat good quality of natural resources. Could anyone help in this regard?
There are different international law, doctrines for Trans Boundary Water Resources, such as:
1. Absolute territorial sovereignty theory
2. Absolute territorial integrity theory
3. Theory of limited territorial sovereignty.
4. Water Rights Based on Previous Use or Prior Appropriation
5. Riparian water rights
Although water covers more than two-thirds of the earth's surface, but 97% is in oceans and 2℅ locked in ice-cap and not available to human beings for consumption. Only 1℅ is termed as fresh water (surface & ground water). Therefore, water as a limited resource that is in great demand. The manner in which this demand is satisfied varies according to the jurisdiction in which a water supply is located. In case of trans-water resources, the upstream country has got upper hand to manipulate the river flow. This manipulation can be interpreted under various approaches and doctrines. Each approach has its weaknesses, and jurisdictions will continue experimenting with established legal doctrines to better accommodate the supply and demand of water rights.
Various treaties concluded to decide on the water. Question arose, either there is any such doctrines exists that protecting the ecology?
Chemical Oxygen Demand is a common problem water test. Silver sulfate is used as a catalyst. Sometimes, if AgSO4 is not available, we can use AgNO3 as a catalyst or not.
Eutrophication is defined as the nutrient enrichment of an aquatic ecosystem. This factor favors the proliferation of organisms that consume the nutrients and oxygen.
my question is:
Is it possible to relate these events to climate change? obviating the contribution of direct nutrients by human action.
I would like to get some suggestions regarding how water quality can be related with Water for Sustainable Development particularly in bio monitoring studies. Can anybody provide me some valuable insights.
Thanks in Advance.
Anila P Ajayan
The concept of climax community and succession particularly in terrestrial or water ecosystems where perturbations occur are interesting phenomena. Related concepts such as keystone species are also very important. But do these concepts apply in the microbial world where environmental changes drastically shift population and community dynamics in a very short time frame?
i am more interest to know what kind of hypothesis, question, or objective that each index usually answer. surprisingly that both indices has quite the same definition in a term of scribing the reason of using them to define diversity. i calculate both indices and i would like to discuss the results. simply my objective is to see if there are special and temporal differences in phytoplankton diversity among 8 sampling stations.
also i am interested to know what are the main objectives or questions of your researches that you answered using such indices. thanks
Today 25-01-2018 we documented more than a lakhs no of Faunus ater (Linnaeus, 1758) were seen in small estuary. Watch this link https://www.youtube.com/watch?v=p7BA1OvrN-k&feature=share .
This species are any indicator of usual.
I am looking for a literature review that shows positive results of how technological innovation can trigger policy reform and therefore better regulation in the field of water and ecosystem management.
The major chunk of Carbon is sequestered into sea. The forest growth is almost at a stationary phase means no incremental growth is reported in forest. In this scenario, my concern is about the reality the forest contribution towards C-sequestration. Either it contributing or not?
For studying water chemistry, phytoplankton analysis or microbial analyses?
Thanks in Advance for the valuable answers.
I've recently (May, 2017) found moderate levels of Cladophora, Oscillatoria, and Lyngbia in a 2nd order, softwater, coldwater stream in northwestern New Jersey (USA). A concern has been expressed that presence of these algae may be evidence that nutrient polluted seepage from a septic system is entering the stream. I'm not so sure. I know that high biomass of Cladophora in the Great Lakes has been considered an indicator of nutrient pollution, and cyanobacteria are also often considered indicators of nutrient pollution. But I suspect that low to moderate levels of these algae occur naturally without any pollution, but I'm not sure.
I am looking for the BMWP taxa score table for BMWP-Columbia, like proposed by Gabriel Roldan-Perez (2003) in his book "Bioindicacion de La Calidad del Agua En Colombia: Propuesta Para El USO del Metodo Bmwp/Col." Does anyone have a copy of this score table?
If I was to investigate the impact of bivalve aquaculture on basin-scale sedimentation and nutrient flux, it is difficult to control for the effect of bivalve clearance on the basin-scale. Are there intra-basin-scale spatial statistical methods that can be employed to properly test the effect of bivalve seston clearance and sedimentation? If we have bivalve farms and reference areas in the same basin, how to measure the effect?
I am conducting an experiment on rotifers. My experimental cultures got infected with naked amobeae, which obviously feed on my rotifers. I need to find a solution how to clear out the rotifer cultures of amoebae.
A co-worker found this unknow flatworm along a citycanal in Amsterdam. We have no idea what this might be, so any help is welcome. It is probably non-indigenous. It was collected using a pondnet in the canal, but it may prove not to be aquatic after all.
Can Anyone help me with methodology and index use in phytoindication study of ecological status of aquatic environment using macrophytes and phytoplankton ,
I would like to obtain information to model development times at different temperatures of larvae of blue mussels belonging to the Mytilus edulis complex, especially those found in the northwest Atlantic: M. edulis sensu stricto, M. trossulus, and/or their hybrids.
I have found a number of old studies reporting growth (size increase, not development) and survival at different temperatures, and newer studies quantifying growth and development at a few temperatures plus further manipulations (e.g., different pH in ocean acidification studies), but haven't had much luck finding basic temperature-dependent development studies. I.E., a study rearing mussel larvae at multiple controlled temperatures and reporting times or rates of development (total and/or through specific stages). But, surely such information must be out there. Can someone please direct me to some useful sources?
Bioturbation is the soil/sediment reworking by animals. It has a definite role in ecosystem engineering too by modifying and modulating different physicochemibal transformations and biological/microbiological interactions. Toxicants' transfers may be affected and ecotoxic effects may be modified. Can bioturbation be manipulated in reducing toxic effects of some toxicants and how?
im doing research on daily rainfall. thus, before i proceed to the further test, i would like to do for homogeneity test on daily rainfall data. therefore, i found that most of the researcher using this 4 homogeneity test theyre :- 1) Standard Normal Homogeneity Test, 2) BR test, 3) Pettite Test and 4)VoR test. However, i couldn't find how to compute those test as im using R software.
thus, can anybody help me regarding this test? i try most of the CRAN PAckage for snht but alwys had an error.