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/file.FileLoader.html?key=def6575c794b111fcc31275e853c2b15; [ISSN 0012-4966 (Print) 1608-3105 (Online)]. 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) and algae (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 issues: cationic amphiphilic substance, 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,
2003 (May). Vol. 390. 252-255

Ostroumov S.A. Biotic self-purification of aquatic ecosystems: From the theory to ecotechnologies. – Ecologica 2007, vol. 15, No. 50, p. 15-21. (Faculty of Biology, Moscow State University, Moscow, Russia) Basic elements of a new theory for the biological mechanism for water self-purification are presented. Hydrobionts (aquatic organisms) are actively involved in various processes leading to water purification. Not only microorganisms (bacteria, cyanobacteria and fungi), but also algae, plants, invertebrates, and many other groups of organisms are involved, which is discussed and analyzed in the paper. Results of the author's experiments that study the effects of various pollutants on aquatic organisms (freshwater and marine bivalves) are given. The theory is an innovative basis for developing ecological technologies to clean water and to upgrade its quality by using organisms and ecosystems. This paper generalizes and systematizes the basics of the author’s theory of the multifunctional role that the biota plays in the self-purification and ecological remediation of aquatic ecosystems using the results of previous analyses and the theory of the functioning of aquatic ecosystems. It is expected that on the basis of this theory some efficient ecotechnologies will emerge to remediate and restore polluted aquatic systems. The paper is based on the presentations that the author made at a scientific seminar in the V.I. Vernadsky Institute of Geochemistry and Analytical Chemistry, at the conferences 'Aquatic Ecosystems and Organisms-6' (the 6th international conference that was run in Moscow in 2004) and 'Aquatic Ecosystems and Organisms-7' (the 7th international conference, Moscow, 2005), XXIX Congress of International Association of Theoretical and Applied Limnology, and other conferences. Key words: aquatic ecosystems; water bodies; water streams; aquatic pollution; bioremediation; phytoremediation; filter-feeders; bivalves; water self-purification, freshwater, marine, water quality, pollution, biota, ecotechnology References: Alimov, A.F. (1981) Functional ecology of freshwater bivalves. Leningrad: Nauka Press; Ostroumov, S.A. (2002) Dokl. Akad. Nauk, vol. 383, No. 5, 710-713; Ostroumov, S.A. (2002) Dokl. Akad. Nauk, vol. 385, No. 4, 571-573; Ostroumov, S.A. (1975) Vestnik Akademii Nauk, vol. 73, No. 3, 232-238; Ostroumov, S.A. (2002) Hydrobiologia, vol. 469, 117-129; Ostroumov, S.A. (2004) On the biotic self-purification of aquatic ecosystems. Dokl. Akad. Nauk, vol. 396, No. 1, 136-141; Ostroumov, S.A. (2006) Biomachinery for maintaining water quality and natural water self-purification in marine and estuarine systems: Elements of a qualitative theory. International Journal of Oceans and Oceanography, vol. 1, No. 1, 111-118; Ostroumov, S.A. (2005) Some aspects of water filtering activity of filter-feeders. Hydrobiologia, vol. 542, No. 1, 275-286; Ostroumov, S.A., Walz, N., Rusche, R. (2003) Effect of a cationic amphiphilic compound on rotifers. Dokl. Akad. Nauk, vol. 390, No. 3, 423-426; Alimov A.F. (2000) Elements of Aquatic Ecosystem Function Theory. St. Petersburg: Nauka. 148 p.; Ostroumov, S.A., Widdows, J. (2006) Inhibition of mussel suspension feeding by surfactants of three classes. Hydrobiologia, vol. 556, No. 1, 381-386; Ostroumov, S.A. (2006) Biological Effects of Surfactants. London-New York: CRC-Taylor & Francis; Ostroumov, S.A. (1986) Introduction to Biochemical Ecology. Moscow: Moscow State. Univ; Ostroumov, S.A. (2000) Dokl. Akad. Nauk, vol. 374, No. 3, 427-429; Ostroumov, S.A. (2000) Dokl. Akad. Nauk, vol. 375, No. 6, 847- 849; Ostroumov, S.A. (2000) Dokl. Akad. Nauk, vol. 372, No. 2, 279-282; Ostroumov, S.A. (2001) Biological effects of surfactants on organismy (Biologicheskie effekty pri vozdeistvii poverkhnostno-aktivnykh veshchestv na organizmy). Moscow: MAKS Press (in Russian); Ostroumov, S.A. (2001) Dokl. Akad. Nauk, vol. 381, No. 5, 709-712; Ostroumov, S.A. (2002) Dokl. Akad. Nauk, vol. 382, No. 1, 138-141; Sushchenya, L.M. (1975) Kolichestvennye zakonomernosti pitaniya rakoobraznykh. Minsk: Nauka i Tekhnika; Wetzel, R.G. (2001) Limnology: Lake and river ecosystems. San Diego: Academic Press.
Ecologica 2007, vol. 15, No. 50, p. 15-21. In English.

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.

Остроумов С.А. Элементы теории биоконтроля качества воды: фактор экологической безопасности источников водоснабжения (=Elements of the theory of biocontrol of water quality: a factor in the ecological safety of the sources of water) // Химическая и биологическая безопасность. 2008. № 5-6. с.36-39. Библиогр. 22 назв. [http://www.cbsafety.ru/rus/saf_41_3.asp] УДК 574.6: 574.635: 602.7: 626. 119234, Москва, Ленгоры, Московский гос. университет им. М.В. Ломоносова, биологический факультет. РЕФЕРАТ: Представлена новая теория биомеханизмов самоочищения воды, изложенная в книге автора «Гидробионты в самоочищении вод и биогенной миграции элементов» (М.: МАКС Пресс, 2008, 200 с.). Гидробионты активно участвуют в процессах, ведущих к очищению воды. В них участвуют почти все группы живых организмов, что анализируется в статье с различных сторон. При разработке теории были использованы результаты опытов автора, изучавшего воздействие поллютантов на живые организмы. Изложенная теория служит инновационной основой для создания новых экотехнологий очищения воды и повышения ее качества с использованием водных организмов. Представлены и обоснованы новые основные концепции, в том числе понятия и термины: biomachinery, экзометаболизм, экологические хеморегуляторы, экологические хемомедиаторы, макросимбиотические системы и другие. Новые результаты автора по выявлению свойства синтетических поверхностно-активных веществ (ПАВ) подавлять фильтрацию воды двустворчатыми моллюсками были признаны научным открытием и отмечены Дипломом за научное открытие № 274. Теория вносит вклад в научные основы укрепления экологической безопасности водных экосистем (водоемов и водотоков), которые служат источниками водоснабжения. Ostroumov S.A. Elements of the theory of biocontrol of water quality: a factor in the ecological safety of the sources of water. // Chemical and Biological Safety (=Himicheskaja i biologicheskaja bezopasnost' , Moscow). 2008. No. 5-6. p.36-39. ABSTRACT: A new theory for the biomechanisms for water self-purification is presented in the author’s book ‘Aquatic Organisms in Water Self-Purification and Biogenic Migration of Elements’ (2008, 200 p.). Hydrobionts (aquatic organisms) are actively involved in various processes leading to water purification. Almost all main groups of organisms are involved, which is discussed and analyzed in the paper. In the theory, the results of the author's experiments on the effects of various pollutants on aquatic organisms were used. The theory is an innovative basis for new ecological technologies to clean water and to upgrade its quality by using aquatic organisms. New fundamental concepts were introduced and discussed, including the concepts and terms: biomachinery, exometabolism, ecological chemoregulators, ecological chemomediators, macrosymbiotic system and others. The new authors’s results on the surfactant-induced inhibition of water filtration by bivalves were recognized as a scientific discovery. As a result, the author was awarded Diploma for Scientific Discovery No. 274. The theory is a contribution to the scientific basis for environmental safety of the aquatic ecosystems (aquatic bodies and streams) that serve as sources of water supply. Ключевые слова: качество воды, водные экосистемы, самоочищение воды, загрязнение; загрязняющие вещества, поллютанты, ксенобиотики, синтетические химические вещества, биотестирование, экологическая опасность, инновации, экологическая безопасность, источники водоснабжения, устойчивое использование, водные ресурсы, ресурсы пресной воды, морские, поверхностные водные экосистемы, новая концепция, экзометаболизм, биотрансформации, биодеградация, разложение, водоемы, водотоки, хеморегуляторы, макросимбиотические системы, биогенная миграция элементов, научное открытие № 274, антропогенное воздействие, экология, геохимия, репарация, поверхностно-активные вещества, ПАВ, детергенты, моющие средства, фильтраторы, биоконтроль, самоочистительный потенциал экосистемы, фитотехнология, фиторемедиация, экобиотехнология. Key words: Water quality, aquatic ecosystems, water self-purification, pollution; pollutants, xenobiotics, synthetic chemicals, bioassays, biotesting, ecological hazards, innovations, environmental safety, sources of water supply, sustainable use, aquatic resources, freshwater, marine, surface aquatic ecosystems, new concept of exometabolism, pollutants, biotransformation, biodegradation, destruction, water bodies, streams, chemoregulators, macrosymbiotic system, biogenic migration of elements, scientific discovery No. 274, anthropogenic impact, ecology, geochemistry, repair, biomachinery, surfactants, tensides, detergents, filter-feeders, biocontrol, self-purification potential of ecosystems, phytotechnology, phytoremediation, ecobiotechnology.
Остроумов С.А. Элементы теории биоконтроля качества воды: фактор экологической безопасности источников водоснабжения (=Elements of the theory of biocontrol of water quality: a factor in the ecological safety of the sources of water) // Химическая и биологическая безопасность. 2008. № 5-6. с.36-39.

http://scipeople.ru/users/2943391/; Ostroumov S.A. The synecological approach to the problem of eutrophication. - Doklady Biological Sciences, Vol. 381, 2001, p. 559–562. http://scipeople.com/uploads/materials/4389/Danbio6_2001v381n5.E.eutrophication.pdf [Translated from Doklady Akademii Nauk (DAN), Vol. 381, No. 5, 2001, p. 709–712. Russian Text] ISSN 0012-4966. DOI 10.1023/A:1013378505630. The author proposed a new solution to the problem of eutrophication. This new vision is based on a synecological approach. In the paper, the author proposes a new two-component solution in order to protect the aquatic ecosystem from eutrophication. First, it is essential to reduce the input of nutrients. Second, it is equally important to reduce the input of the pollutants which weaken the potential of the ecosystem for removing the biomass of phytoplankton by filter-feeders. Those pollutants include surfactants, detergents, and some other compounds. Because synecology is one of key approaches in our analysis, this concept of counteracting eutrophication can be called a synecological solution to the problem. New experimental results: the detergent ‘Fairy’ inhibited the filtration rate of mussels Mytilus galloprovincialis; this complements the earlier data of the author on how detergents affect filter-feeders. --KEY WORDS: danger, chemical pollution, hazards, xenobiotics, synthetic, surface-active agents, surfactants, laundry detergents, heavy metals, mixtures, eutrophication, water filtration, clearance rate, invertebrates, pellets, filter-feeders, suspension feeders, bivalves, mollusks, rotifers, mussels, Mytilus, edulis, galloprovincialis, Crassostrea gigas, Dreissena, Unio, phytoplankton, zooplankton, algae, Daphnia, aquatic, ecosystems, sustainable, use, water resources, environmental safety, control, pollution, new, approach, solving, man-made reservoirs. --Остроумов С.А. Синэкологические основы решения проблемы эвтрофирования // Доклады академии наук (ДАН). 2001. том 381. № 5. С.709-712. Видение автором нового решения проблемы эвтрофирования основывается на синэкологическом подходе. Автор предлагает новый подход - двухкомпонентное решение в целях защиты водных экосистем от эвтрофирования. Оба компонента в равной степени важны и должны реализовываться (применяться на практике) одновременно. Во-первых, необходимо снизить поступление биогенов. Во-вторых, равным образом важно снизить поступление поллютантов, которые ослабляют потенциальную способность экосистем удалять биомассу фитопланктона благодаря активности фильтраторов. Эти поллютанты включают в себя поверхностно-активные вещества, детергенты и некоторые другие. Детергент Fairy ингибировал фильтрационную активность мидий Mytilus galloprovincialis, что дополняет ранее полученные данные автора о том, как детергенты воздействуют на фильтраторов. Поскольку синэкология – один из ключевых подходов в нашем анализе проблемы, эта концепция противодействия эвтрофирования может быть названа синэкологическим решением проблемы. --Ключевые слова: опасность химического загрязнения, ксенобиотики, синтетические поверхностно-активные вещества (ПАВ), детергенты, синтетические моющие средства (СМС), тяжелые металлы, смесевые препараты, эвтрофикация, фильтрация воды, беспозвоночные, пеллеты, фильтраторы, двустворчатые моллюски, коловратки, мидии, Mytilus edulis, Mytilus galloprovincialis, Сrassostrea gigas, Dreissena, Unio, фитопланктон, зоопланктон, Daphnia, водные экосистемы, устойчивое использование водных ресурсов, экологическая безопасность, борьба с загрязнением и эвтрофикацией, новый подход к решению проблемы.
The synecological approach to the problem of eutrophication. - Doklady Biological Sciences, Vol. 381, 2001, p. 559–562. [Translated from Doklady Akademii Nauk (DAN), Vol. 381, No. 5, 2001, p. 709–712. Original Russian Text Copyright © 2001 by Ostroumov S.A.]