ECOLOGICAL CHARACTERISTICS OF MICROPHYTOBENTHOS IN THE SHALLOW-WATER AREA OF KYIV RESERVOIR (UKRAINE)
DOI:
https://doi.org/10.32782/1998-6475.2025.59.9Keywords:
bottom algal communities, infraspecies taxa, indicator species, water environmentAbstract
The ecological characteristics of the microphytobenthos of the shallow water zone of the Kyiv Reservoir in the summer season of 2021 were considered. It has been established that 105 intraspecific algae taxa are indicator species of certain ecological characteristics. By geographical distribution, they belong to four categories: cosmopolitan are the most abundant, boreal, holarctic and alpine forms are less numerous. Indicators of organic pollution of the aquatic environment belong to three saprobity zones: β-mesosaprobes and χ-ο-saprobes predominate, α-saprobes are few. In relation to water salinity, bottom algae are divided into four halophilic categories: indifferents and halophiles dominate, the share of mesohalophiles and halophobes is insignificant. Indicators of the active reaction of the aquatic environment are presented in three categories: their greatest number is among alkaliphiles and indifferents, acidophiles are rare. By biotopic location, the most numerous are benthic and planktonic-benthic forms, which are represented in almost the same number of species, while planktonic forms are rarely found on the bottom.
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