http://www.scribd.com/doc/56828623/; Biological filters are an important part of the biosphere: http://b23.ru/nl78; http://sites.google.com/site/ostroumovsa/ostroumov-sa-biological-filters-are-an-important-part-of-the-biosphere--science-in-russia-2009--2-p-30-36; Ostroumov S.A. Biological filters are an important part of the biosphere // Science in Russia. 2009. No. 2, p. 30-36. English abstract with the site of the full text of the English edition of the journal with this paper that reviews the multi-year research of filter-feeders by Dr.S.Ostroumov in U.K., Russia, Ukraine, and other countries. ** Ostroumov S.A. Biological filters are an important part of the biosphere // Science in Russia. 2009. No. 2. P. 30-36. [The journal 'Science in Russia' is published by The Presidium of Russian Academy of Sciences, both in English and in Russian; Nauka Publishers, Moscow; ISSN 0869-7078. www.ras.ru, ©Russian Academy of Sciences Presidium; Editor-in-Chief: Academician Rem Petrov; among the members of the Editorial Board: President of the Russian Academy of Sciences; ex-President of the Academy; ex-President of Moscow State University; Vice-Presidents of the Academy.] BIOLOGICAL FILTERS ARE AN IMPORTANT PART OF THE BIOSPHERE S.A.Ostroumov Abstract: Studies of ecology of living organisms lead to a more profound understanding of the intricate processes of the Earth’s biosphere functioning. The mankind is still far from establishing harmonious relations with it. However, permanently progressing destruction of natural complexes by the technogenic civilization necessitates some new revolutionary approaches to their preservation. That is why it is so important to study the relationships and interactions between living organisms. One of the most important roles in this “orchestra” is played by numerous invertebrates which filter the water and improve water quality.
Biological filters are an important part of the biosphere // Science in Russia. 2009. № 2. P. 30-36.

http://scipeople.ru/publication/66775/; 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. 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. --KEY WORDS: new fundamental concept, role of biota, functioning of aquatic ecosystems, central, labile and potentially vulnerable component, water self-purification, priorities for protection of biodiversity and environment, maximum allowable concentrations, MACs, substances, filter feeders, inhibiting and 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; ---http://scipeople.ru/users/2943391/; [http://www.springer.com/life+sci/journal/10630] also see: http://sites.google.com/site/bioeffectsofsurfactants/ http://sites.google.com/site/surfactantinhibitfilterfeed02/ http://sites.google.com/site/3surfactantsfiltrationmytilus/ http://sites.google.com/site/ostroumovsergei/ http://sites.google.com/site/bioticupgradewaterquality2008/

http://scipeople.ru/publication/66759/; S. A. Ostroumov. Criteria of Ecological Hazards Due to Anthropogenic Effects on the Biota: Searching for a System //Doklady Biological Sciences, Vol. 371, 2000, pp. 204–206. Translated from Doklady Akademii Nauk, Vol. 371, No. 6, 2000, pp. 844–846. Original Russian Text Copyright © 2000 by Ostroumov. New conceptualization of the most important parameters and criteria characterizing negative anthropogenic effects, including the effects of chemicals. Innovative development and systematization of these criteria. New approaches to improvement of a system of criteria of ecological hazards due to anthropogenic effects on the biota. New experimental data on the effects of surfactant xenobiotics on living organisms, esp. filter-feeders (bivalves).
Criteria of Ecological Hazards Due to Anthropogenic Effects on the Biota: Searching for a System //Doklady Biological Sciences, Vol. 371, 2000, pp. 204–206.