Ostroumov, S. A.. Moscow State University, email@example.com
, . A.. ,
INTEGRITY-ORIENTED APPROACH TO ECOLOGICAL BIOMACHINERY FOR SELF-PURIFICATION
AND BIOREMEDIATION IN AQUATIC ECOSYSTEMS: STOPPING AN ECOLOGICAL TIME BOMB
The goal of this paper is to analyze some elements of the integral biomachinery of ecosystem self-purification, which emphasizes the importance of the four functional biological filters that are instrumental in purification and upgrading the quality of water in aquatic ecosystems. These functional filters are: (1) direct water filtering by aquatic organisms that are filter-feeders; (2) the filter (represented mainly by communities of aquatic plants/periphyton) which prevents input of pollutants and nutrients (N, P) from land into water bodies; (3) the filter (represented by benthic organisms) which prevents re-entry of pollutants and biogenic elements from the bottom sediments into the water; (4) the filter (represented by microorganisms attached to particles which are suspended in the water) that provides microbiological treatment of water column. The self-purification biomachinery includes also several mills that break down the molecules of pollutants (e.g. a photochemical mill; an enzymatic mill; a free-radical mill) and exporting pumps that export pollutants from the water (using both physico-chemical and biological mechanisms). Man-made effects on self-purification may impair it (e.g., Ostroumov et al., 1997, Bulletin of Moscow University, 3: 30-36) and lead to gradual deteriorating the quality of water and disturbing biogeochemical cycles, which we might describe in terms of an ecological time bomb.
Day: Tuesday, Feb. 2
Location: Sweeney Center