Specifics of biotopic preferences of algae in the water column in the freshwater ecosystems of different types
Analysis of biotopic preferences of 455 species (467 infraspecific taxa) of algae in the water column of various lotic, lentic and transitional aquatic ecosystems of Ukraine has shown, that the largest part of Cyanobacteria floristic spectrum was formed by planktonic forms, Bacillariophyta — by bent...
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| Date: | 2025 |
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| Main Authors: | , , , |
| Format: | Article |
| Language: | Ukrainian |
| Published: |
M.G. Kholodny Institute of Botany, NAS of Ukraine
2025
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| Online Access: | https://algologia.co.ua/journal/article/view/35.2.104 |
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| Journal Title: | Algologia |
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Algologia| Summary: | Analysis of biotopic preferences of 455 species (467 infraspecific taxa) of algae in the water column of various lotic, lentic and transitional aquatic ecosystems of Ukraine has shown, that the largest part of Cyanobacteria floristic spectrum was formed by planktonic forms, Bacillariophyta — by benthic and planktonic-benthic forms, and Chlorophyta — by planktonic-benthic forms. The floristic spectra of the water column algae differed across aquatic ecosystems types. In particular, the share of planktonic forms among the representatives of different phyla in the water column can be represented in form of ordered series: Cyanobacteria: lentic ecosystems > transitional ecosystems > lotic ecosystems; Bacillariophyta: transitional ecosystems > lotic ecosystems > lentic ecosystems; Chlorophyta: lentic ecosystems > lotic ecosystems > transitional ecosystems. These dissimilarities were driven by complex effect of abiotic and biotic factors. Besides, one and the same species of algae in the process of its vegetation may change its biotopic preference and during different seasons of the year be found in plankton, neuston, microphytobenthos and phytoepiphyton. The type of biotopic preference is evidently the manifestation of a particular species’ adaptation mechanisms. However these complicated issues require further complex research by algologists, hydrobiologists, plant physiologists. The results of the saprobiological analysis show that, notwithstanding their biotopic preference, the algae of the water column are quite informative indicators of water quality in aquatic ecosystems under study. On the whole, the ratio of species with different biotopic preferences and saprobity and abiotic factors governing them in lotic, lentic and transitional ecosystems is an important issue requiring further research. |
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