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key words: S.A.Ostroumov, Hydrobiologia, Inhibitory analysis, top-down control, eutrophication, algal blooms, water self-purification, water quality, food webs, aquatic ecosystems, Phytoplankton grazers, benthic suspension-feeders, synthetic surfactants, detergents, freshwater mussels, Unio tumidus, U. pictorum, marine mussels Mytilus galloprovincialis, M. edulis, oysters Crassostrea gigas, SDS, water filtration, filtering activity, water filtration, non-ionic surfactant, Triton X-100, TX100, cationic surfactant, TDTMA, clearance rate, shampoo, AHC, Avon Herbal Care,

S.A.Ostroumov. Inhibitory analysis of top-down control: new keys to studying eutrophication, algal blooms, and water self-purification  // Hydrobiologia. 2002. vol. 469.  P.117-129.

key words: S.A.Ostroumov, Hydrobiologia, Inhibitory analysis, top-down control, eutrophication, algal blooms, water self-purification, water quality, food webs, aquatic ecosystems, Phytoplankton grazers, benthic suspension-feeders, synthetic surfactants, detergents, freshwater mussels, Unio tumidus, U. pictorum, marine mussels Mytilus galloprovincialis, M. edulis, oysters Crassostrea gigas, SDS, water filtration, filtering activity, water filtration, non-ionic surfactant, Triton X-100, TX100, cationic surfactant, TDTMA, clearance rate, shampoo, AHC, Avon Herbal Care,

Citation of publications authored by S.A.Ostroumov -see: http://sites.google.com/site/bioticupgradewaterquality2008/citation-of-publications-authored-by-saostroumov

Some publications that cited S.A.Ostroumov see also: http://sites.google.com/site/ostroumovsergei/publications-that-cited-saostroumov


relevant and similar papers of the same author

Abstract of the paper: Inhibitory analysis of top-down control: new keys to studying eutrophication, algal blooms, and water self-purification  // Hydrobiologia. 2002. vol. 469.  P.117-129. 8 tables. Bibliogr. 71 refs. [Top-down control is an important type of interspecies interactions in food webs. It is especially important for aquatic ecosystems. Phytoplankton grazers contribute to the top-down control of phytoplankton populations. This article discovered new facts that shows new sides of the role of benthic suspension-feeders (filter - feeders) in the control of plankton populations as a result of water filtering and the removal of suspended matter (including the cells of plankton) from the water column. New inhibitory effects of synthetic surfactants and detergents on activity of benthic filter-feeders (freshwater mussels Unio tumidus, U. pictorum, marine mussels Mytilus galloprovincialis, M. edulis, and oysters Crassostrea gigas) were discovered by the author and some of them were presented in this paper. Efficiency of that new approach to the analysis and solution of problems of eutrophication and water self-purification is pointed out. The author proved that chemical pollution poses a threat to the natural top-down control of phytoplankton and to water self-purification processes. The latter are an important prerequisite for sustainable use of aquatic resources. The new discoveries of the important facts include the following. Anionic surfactant SDS at a concentration of 0.5 mg/L inhibited water filtration by oysters Crassostrea gigas, at a concentration of 1.7 mg/L suppressed the filtering activity of marine mussels M. galloprovincialis, at that of 1-5 mg/L decreased water filtration by marine mussels M. edulis. The non-ionic surfactant Triton X-100 (TX100) at a concentration of 0.5-5 mg/L induced a sharp slowdown in water filtration by M. edulis, at 1 and 5 mg/L it caused a decrease in the filtration rate by the freshwater bivalve Unio tumidus. The cationic surfactant TDTMA at 1-2 mg/L constrained the filtering activity of  the freshwater bivalve Unio pictorum. 4 detergents (6.7-50 mg/L) hindered the filtration by M. galloprovincialis. 3 detergents (1-30 mg/L) slowed down the clearance rate during water filtration by Crassostrea gigas. The shampoo AHC (Avon Herbal Care) at  concentrations 5-60 mg/L arrested the filtration by M. galloprovincialis]. (Springer Press, Dordrecht) ISSN 0018-8158. DOI 10.1023/A:1015559123646.

The theoretical implications of this paper were presented in the following paper of the same author:

Polyfunctional role of biodiversity in processes leading to water purification: current conceptualizations and  concluding remarks // Hydrobiologia. 2002. v. 469 (1-3): P.203-204. Bibliogr. 8 refs. ISSN 0018-8158 (Print) 1573-5117 (Online). [Selected elements of a new vision of the role of biodiversity in water purification and maintaining the natural purification potential of ecosystems, elements of the theory of water self-purification. Some fundamental principles that characterize the pivotal roles of the biodiversity of filter-feeders in ecosystems. Among those roles are: (1) the role of ecological repair of water quality, (2) the role of contributing to reliability and stability of the functioning of the ecosystem, (3) the role of contributing to creation of habitat heterogeneity, (4) the role of contributing to acceleration of migration of chemical elements. It is an important feature of the biomachinery of filter-feeders that it removes from water various particles of a very broad range of sizes. Another important principle is that the amount of the organic matter filtered out of water is larger than the amount assimilated so that a significant part of the removed material serves no useful function to the organism of the filter-feeder, but serves a beneficial function to some other species and to the ecosystem as a whole. The new experiments by the author additionally demonstrated a vulnerability of the filtration activity of filter feeders (e.g., bivalves and rotifers) to some xenobiotics (tetradecyltrymethylammonium bromide, heavy metals and some others). The inhibition of the filtration activity of filter-feeders may lead to the situation previously described as that of an ecological impairment of the second type]. DOI 10.1007/s10750-004-1875-1.