摘要 : Data on the distribution of phytoplankton in the ponds of the Oleksandriya Dendrological Park significantly differing in the content of inorganic compounds of nitrogen and phosphorus, and also in the content of chloride and organi... 展开 Data on the distribution of phytoplankton in the ponds of the Oleksandriya Dendrological Park significantly differing in the content of inorganic compounds of nitrogen and phosphorus, and also in the content of chloride and organic matter in the water, are given in the paper. It has been found that the species richness, taxonomic structure, species composition, and complex of dominant species of phytoplankton, and also the quantitative indices of its development, in the studied ponds significantly differed. The maximal values of cell numbers were one order, whereas those of biomass - two orders of magnitude higher than their minimal values. The average value of the Sorensen coefficient of community similarity was 32%. Non-uniform distribution of phytoplankton in the studied ponds was conditioned by significant difference in the chemical composition of the water incoming into the ponds from different sources, including heavily polluted soil waters and springs with clean drinking water from deep water-bearing layers. 收起