Algoflora of the Kuyalnik Estuary: current state and long-term dynamics
The results of the analysis of retrospective and original researches of algoflora of a hyperhaline Kuyalnyk Estuary (KE) for the 150-year period are resulted. The current state and long-term variability of the species composition and structure of algae of aquatic and soil forms of the estuary, the p...
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| Datum: | 2022 |
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| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | Ukrainian |
| Veröffentlicht: |
M.G. Kholodny Institute of Botany, NAS of Ukraine
2022
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| Online Zugang: | https://algologia.co.ua/journal/article/view/32.3.224 |
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| Назва журналу: | Algologia |
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Algologia| Zusammenfassung: | The results of the analysis of retrospective and original researches of algoflora of a hyperhaline Kuyalnyk Estuary (KE) for the 150-year period are resulted. The current state and long-term variability of the species composition and structure of algae of aquatic and soil forms of the estuary, the peculiarities of their ecotopic confinement to the factors of salinity, pH, saprobity are given. During the many years of research in the waters of KE 237 algal taxa from 10 divisions, 13 classes, 34 orders, 72 families, 98 genera, and in soil ecotopes of the estuary – 99 taxa from 50 genera, 29 families, 17 orders, 5 classes and 4 departments were found. In the modern period (2001–2018) there are 123 taxa of algae – representatives of 61 genera, 43 families, 22 orders, 7 classes and 4 divisions, in soil ecotopes – 93 species from 4 divisions were registered in the estuary. In all periods of research in the aquatic ecotopes of the estuary, representatives of Bacillariophyta dominate, and in the soil ecotopes of the coast – Cyanoprokaryota, of which 54 taxa were given for the first time for KE. It is shown that hypergalinic KE is characterized by both intraannual and interannual variability of algal species composition. It was found that the main factor limiting the biodiversity of algae is the salinity of their growth environment. The data obtained allowed to determine the features of the development of seasonal complexes of species and the dynamics of their interannual changes in 2001–2018, taking into account the hydrochemical conditions in certain years. The cosmopolitan (71%) and boreal (25%) groups predominate in relation to the biogeographical distribution of algae. |
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