Влияние антропогенной нагрузки на структуру зоопланктонного собщества
2010
Bazar, S.N., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Land Reclamation
Evaluation of hydrobiological regime of the Svityaz lake (Belarus) over the vegetation period was realized on the basis of zooplankton organisms dynamics in the conditions of the Republic of Belarus. Research result showed that the average zooplankton quantity was the following: in area of anthropogenic load - 135,25 units/l; in control area - 139,25 units/l; in macrophytes area - 143,25 units/l. Biomass amount was the following: in area of anthropogenic load - 1,24mg/l; in control area - 1,29 mg/l; in macrophytes area - 1,34 mg/l. The obtained data made it possible to conclude that in the investigated areas did not happen any substantial changes of quantitative indexes of zooplankton. Abundance and biomass indexes according to the standard classification made it possible to relate the Szityaz lake to mesotrophic type. Zone of macrophytes was characterized by the larges species diversity. Submerged and emergent vegetation took part in self-purification of water body and created more favourable conditions for existence, which preconditioned the presence of species which did not occur in other studied zones. Presence of higher aquatic vegetation in zones of inflow of soil reclamation canals and return waters from watering fields promoted the absorption of biogenic elements and stimulated the development of zooplankton which additionally participated in self-purification
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