Phytoplankton in the limans of the Kulikov-Kurchansky group (limans of the Azov Region)
Brief analysis of the knowledge level on phytoplankton community of the limans of the Azov Region by various researchers is given for several decades. The data on seasonal diversity of taxonomic composition of the microalgae, identified in the limans of the Kulikov-Kurchansky group, are presented for 2015, when 244 algae species, belonging to seven taxonomic divisions, were recorded. The highest number of species (100) was represented by the green algae division; 79 species of diatoms were also recorded, as well as 29 species of cyanophytae, and 24 species of euglenoids. Other taxonomic groups of algae were less representative and were registered only sporadically: 9 species of dinoflagellates and cryptomonads, 3 species of ochrophyta. The estimate of seasonal variability of species and numerical composition of phytoplankton community of the limans is presented. In 2015, average annual abundance of the phytoplankton in the limans of the Kulikov-Kurchansky group was 8,580.5 million cells/m3 (with fluctuations from 12,425.6 million cells/m3 in spring to 4,177.9 million cells/m3 in autumn). Phytoplankton biomass in the studied area equaled 2,923.6 mg/m3 on average (with fluctuations from 4,285.06 mg/m3 in spring to 1,764.70 mg/m3 in autumn). High phytoplankton concentrations, which remained in the limans during the whole season, were essential to form primary production, which level in the recent years was to a large extent related to high water temperatures, especially in the water bodies with small surface area, shallow depths and limited water exchange. Taxonomic diversity of microalgae community is an important parameter in assessment of environmental state of the water bodies, because its seasonal variability determines the phytocoenosis reaction to the changes in the environmental quality.
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Contribution biblioteca |
| Language: | Russian |
| Published: |
2018
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| Subjects: | Phytocoenosis, Abundance, Biomass, Aquatic communities, Phytoplankton, Taxonomy, Seasonal variations, |
| Online Access: | http://hdl.handle.net/1834/14952 |
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