Phytoplankton specifics in urban parkland water-bodies
DOI:
https://doi.org/10.31548/bio2017.05.003Abstract
The paper considers phytoplankton specifics in water bodies located in forest-park areas of different cities of Ukraine. The studies of phytoplankton in Lake Babine (Kiev) and the pond of the ZNAEU botanical garden during the growing seasons 2016- 2017 years were carried out with the help of methods generally accepted in hydrobiology with identification of the dominant species complex and calculation of the information diversity according to the Shannon index. It has been found that phytoplankton of these water bodies is characterized by high taxonomic, species, quantitative and information diversity. We identified 262 species of algae belonging to 8 divisions in the water-bodies, among which Bacillariophyta, Chlorophyta and Euglenophyta predominated. The maximum values of phytoplankton abundance and biomass were recorded in the spring and summer seasons. The dominant complex was represented by dinophyte, diatom, green and streptophytic algae. A significant portion of the latter in the phytoplankton of the botanical garden pond is an indication of swamping of the water-body, therefore it is recommended that appropriate measures be taken to improve its condition. β-mesosaprobes predominated in the water-bodies according to the findings of bioindication analysis. According to the index of saprobity the water-bodies under study belong to the class of "moderately polluted". In order to improve the ecological condition of large cities in Ukraine it is necessary to take measures to protect water bodies located in forest-park areas.
Keywords: forest-park areas, taxonomic, species and information diversity, abundance, biomass, dominant algae complex
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