On the Multifunctional Role of the Biota in the Self-Purification of Aquatic Ecosystems. https://www.researchgate.net/publication/227317445;

Lomonosov Moscow State Univ.;
https://5bio5.blogspot.com/2017/09/on-multifunctional-role-of-biota-in.html;
Explanation:
biota - sum of all organisms that live in one location;
self-purification - here it means 'water self-purification', in other words, the natural ecological processes in aquatic ecosystem (water body, water stream) that maintain good water quality (making water clean and clear);
keywords:
ecology, water quality, water, purification, environmental, ecotoxicology, water resources, protection, freshwater, seawater, aquatic, organisms, limnology, biological oceanography, hydrobiology,
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