Pioneer Successions of Phytoplankton in Human-made Water-bodies
Keywords:succession, phytoplankton, diversity, quarry, primary production
Artificial water-bodies, which have developed from various quarries for recovery of natural deposits (granite, sand, titanic ferrites), are places of intensive pioneer successions of autotrophic link, whose main mechanism consists in phytoplankton diversity formation with green algae, diatoms, euglenas and blue-green algae prevailing and the primary production level being high, which causes organic matter synthesis and oxygen saturation of water, making effect upon the physical and chemical properties of waters and the hydrobionts’ living conditions. Sand quarries are marked by intensive eutrophication processes, the primary production there was higher, than in granite quarries, which is explained by increase in the nutrient content, particularly, nitrates accumulation. The paper describes seasonal dynamics of phytoplankton structural and functional characteristics and evaluates the water quality according to the indicator characteristics of algae and hydrochemical parameters.