These and other PAPERS ARE AVAILABLE ONLINE – SEE THE WEB ADDRESSES AT:

http://www.researchgate.net/profile/Sergei_Ostroumov/blog/5152_TextsOnlineFree;

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. Translated from Doklady Akademii Nauk, Vol. 372, No. 2, 2000, pp. 279–282.

(in the author’s comp,Danbio3). ABSTRACT. A new fundamental concept of the role of biota in the functioning of aquatic ecosystems is proposed. According to that concept, the complex of aquatic organisms (aquatic biota) is a central, labile and potentially vulnerable component of the water self-purification system in aquatic ecosystems. This fundamental concept leads to substantial changes in the hierarchy of priorities for protection of biodiversity and environment. According to the concept suggested in this work, the maximum allowable concentrations (MACs) for specific substances should be established after taking into account the possible effects of pollutants on the water self-purification system. Possible effects on many organisms, including filter feeders, should be taken into consideration. Both inhibiting and stimulating effects of sublethal concentrations of pollutants are dangerous, because either of them may cause an imbalance in the complicated system of water self-purification. The fundamental concept suggested in this work heightens the level of priority of the sublethal effects of pollutants. The sublethal effects leading to changes in the functional activity of populations of aquatic organisms may cause an imbalance in the system of water self-purification.

---http://scipeople.ru/users/2943391/; [http://www.springer.com/life+sci/journal/10630];

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S. A. Ostroumov, and M. P. Kolesnikov. Biocatalysis of Matter Transfer in a Microcosm Is Inhibited by a Contaminant: Effects of a Surfactant on Limnea stagnalis. - Doklady Biological Sciences, Vol. 373, 2000, pp. 397–399. [Translated from Doklady Akademii Nauk, Vol. 373, No. 2, 2000, pp. 278–280]. Limnea= Lymnea = Lymnaea https://docs.google.com/fileview?id=0B589QnrA6gkoY2Y5YzYwZWUtMDJlOS00MzZiLWJiYmItN2RkYzljZDFjZjc2&hl=en [File Name: Danbio 4] Abstract: a new aspect of the ecological hazard due to environmental pollution - at a relatively low sublethal concentration of a pollutant – was discovered in this study. The pellet excretion by the mollusks - gastropods Lymnaea stagnalis - feeding on the phytomass of macrophytes (such as the aquatic plant Nuphar lutea) was as high as 4–7 mg dry weight per 1 gram wet weight of the mollusks per 72 h. Pellet sedimentation contribute to vertical transfer of chemical elements in the ecosystem. The pellet composition depended on the species of the plants eaten by the mollusks. When the gastropods L. stagnalis feed on N. lutea, the pellets contain, in addition to organic and inorganic carbon, nitrogen (N, 2.3–2.9%), phosphorus (P, 0.4–0.5%), and silicon (Si, 1.1–1.9%). The relative silicon content may be 30% higher than in the food phytomass. The surfactant tetradecyltrimethylammonium bromide (TDTMA, 2 mg/L) inhibited the feeding rate of the mollusks and pellet production, their accumulation at the bottom of microcosms, and the matter transfer connected with this. The data obtained demonstrated a new aspect of the ecological hazard due to environmental pollution with TDTMA and other quaternary ammonium compounds at sublethal concentrations. According to the author’s opinion and prediction, other contaminants may also suppress pellet production, their accumulation at the bottom, and the matter transfer associated with that.

https://docs.google.com/fileview?id=0B589QnrA6gkoY2Y5YzYwZWUtMDJlOS00MzZiLWJiYmItN2RkYzljZDFjZjc2&hl=en

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S. A. Ostroumov. The Synecological Approach to the Problem of Eutrophication. - Doklady Biological Sciences, Vol. 381, 2001, pp. 559–562. Translated from Doklady Akademii Nauk, Vol. 381, No. 5, 2001, pp. 709–712. [File Name: Danbio 6] https://docs.google.com/fileview?id=0B589QnrA6gkoZGMzYWM5NmYtOGZmZS00YWU3LWEwY2MtNDg5M2E0MTNmZWNj&hl=en;

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S. A. Ostroumov. Biodiversity Protection and Quality of Water: The Role of Feedbacks in Ecosystems. - Doklady Biological Sciences, Vol. 382, 2002, pp. 18–21. Translated from Doklady Akademii Nauk, Vol. 382, No. 1, 2002, pp. 138–141. https://docs.google.com/fileview?id=0B589QnrA6gkoMWUxZGE0M2MtZTFhMy00MDI2LWI2ZGItNDU4YzFiZmYwN2M2&hl=en; [File Name: Danbio 1] Abstract: A new fundamental principle was proved in the paper: to maintain the water quality, it is necessary to protect the functionally active biodiversity of water ecosystems. In other words, protection of the functionally active biodiversity of aquatic organisms in a water body is a method (and an indispensable one) of maintenance of water quality in this ecosystem. Also, the author reports new experimental data on how detergents inhibited filtration activity of marine bivalves, mussels Mytilus galloprovincialis, and oysters Crassostrea gigas. https://docs.google.com/fileview?id=0B589QnrA6gkoMWUxZGE0M2MtZTFhMy00MDI2LWI2ZGItNDU4YzFiZmYwN2M2&hl=en;

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S. A. Ostroumov. Identification of a New Type of Ecological Hazard of Chemicals: Inhibition of Processes of Ecological Remediation. - Doklady Biological Sciences, Vol. 385, 2002, pp. 377–379. Translated from Doklady Akademii Nauk, Vol. 385, No. 4, 2002, pp. 571–573. https://docs.google.com/fileview?id=0B589QnrA6gkoM2QwYjhiN2MtYmY3OS00MzRiLWE5YzEtODg5YTllNDA0NzQ2&hl=en ; [File Name: Danbio2] Abstract: The author discovered and characterized a new type of ecological hazard of chemical pollution of water, which involves inhibition of important processes of ecological remediation of ecosystems (water filtration by aquatic bivalves). Experiments were performed using mollusks (oysters), Crassostrea gigas Thunberg, and a cell suspension of Saccharomyces cerevisiae. The cell suspension was a model of suspended matter in aquatic ecosystem. Laundry detergent Lanza-Automat inhibited water filtration by oysters (Crassostrea gigas). As a result, the removal of the cells (Saccharomyces cerevisiae) from water was inhibited. This demonstrated a new type of ecological hazard caused by water pollution with chemical pollutants at sublethal concentrations. This hazard is associated with the fact that chemical pollution of water causes inhibition of the physiological activity of filter-feeders, thereby inhibiting the important ecological processes of water filtration. These ecological processes contribute significantly to improving water quality, water purification and the related remediation of aquatic ecosystems (their ecological repair). --- https://docs.google.com/fileview?id=0B589QnrA6gkoM2QwYjhiN2MtYmY3OS00MzRiLWE5YzEtODg5YTllNDA0NzQ2&hl=en; http://scipeople.ru/users/2943391/; http://www.springer.com/life+sci/journal/10630;

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MORE PAPERS ARE AVAILABLE ONLINE – SEE THE WEB ADDRESSES AT:

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KEY WORDS for the papers above: fundamental, concept, role, biota, functioning, aquatic ecosystems, central, labile, potentially, vulnerable, component, water self-purification, priorities, protection, biodiversity, environment, maximum allowable concentrations, MACs, substances, filter feeders, inhibiting, stimulating, effects, sublethal, concentrations, pollutants, hazards, imbalance, sublethal effects, functional activity, populations, bivalves, sodium dodecylsulphate, Triton X-100; SDS, TX-100, water filtration, phytoplankton, Mytilus edulis; TDTMA, tetradecyltrimethylammonium bromide, Brachionus angularis, cyanobacteria, green algae, diatom, algae, flagellata, vascular plants , invertebrates, synthetic surfactants, pesticides, suspended particles, sedimentation, sorption, evaporation, hydrolysis, photochemical, conversion, catalytic redox conversion, free radical, reactions, contaminant, toxicity, binding to dissolved organic compounds, DOCs, chemical oxidation, biogens, hydrobionts, biotransformation, redox reactions, destruction, conjugation, extracellular enzymatic transformation, pellets, bottom;

feedbacks, ecosystems , biological sciences, water quality, functionally active biodiversity,

water ecosystems, protection, aquatic organisms, water body, maintenance of water quality, detergents, inhibition, filtration activity, marine bivalves, mussels, Mytilus galloprovincialis, oysters, Crassostrea gigas, bivalves, detergent IXI, detergent Deni-Automat, aquaculture, mariculture, freshwater, marine water bodies, pelagial Protista, infusoria, heterotrophic Protista; Rotatoria; Coelenterata, Rhizistomida; Nemertini, plankton, Mastigophora; Polychaeta, Sipunculoidea, Phoronoidea, Brachiopoda, Bryozoa; larvae, nekton, Cladocera; Copepoda; Insecta; Pisces, molluscs, copepods, Copepoda; Cirripedia, Echinodermata; Hemichorda; Euphausiida; Mysida; Decapoda, Macrura; Tunicata, Appendiculariae; Salpae; Pyrosomida; Benthal Protista, Ctenophora, attached ctenophors Tjalfiella; Spongia, benthos, Mastigophora; Spongia, Porifera; Bryozoa; Mollusca , Bivalvia; Diptera; Trichoptera; mayflies , Porifera; Hydrozoa; Actinozoa, Gorgonaria, Pennatularia, Actinaria , Metridium; Brachiopoda; Kamptozoa, Entoprocta; Phoronida; Sipunculida; Pterobranchia; Acrania; Gastropoda; Amphipoda , Corophiidae; Crinoidea, Ophiuroidea, Asteroidea, Brisingidae, Holothuroidea , Psolus; Tunicata, Ascidiae;

discovery, ecological, hazard, chemical, pollution, water, inhibition, ecological, remediation, ecosystems, water, filtration, aquatic, marine, bivalves, mollusks, oysters, Crassostrea gigas Thunberg, Saccharomyces cerevisiae, suspended, matter, laundry detergent Lanza-Automat, removal of the cells, pollutants, sublethal, concentrations, filter-feeders, improving, water quality, self-purification, remediation, ecological, repair; mariculture, the Black Sea, Mytilus edulis, Dreissena polymorpha, Unio tumidus, M. galloprovincialis, Ephemeroptera, Brachionus, calyciflorus, Cladocera, bichromate, Triton X-100, detergent OMO, Pesticides, cationic surfactant ,TDTMA, fungicide, Carbendazim, kaolin particles, Isochrystis galbana, tetradecylcetyltrimethylammonium bromide, SDS, sodium dodecylsulfate, detergent IXI Bio-Plus (Cussons), dish washing liquid E, dish washing liquid Fairy, shampoo, Avon Hair Care, bioassay, biotest, ecotoxicology, benthos;