Development of fodder zooplankton in the Azov Sea in the context of changing salinity and predation pressure of gelatinous macroplankton
This work presents the results of long-term assessment of the influence of the Azov Sea salinity changes and predation pressure of the Black Sea gelatinous invading species—ctenophores and scyphozoans—on the development of fodder zooplankton. It is shown that the increase in the salinity of the water body leads to considerable changes in the taxonomic structure of its community. Freshwater and brackish-water species are being replaced by characteristic marine taxa from the Black Sea that are gradually becoming dominant. The number of the species immigrating from the Black Sea is growing; their range extends beyond the Southern Azov Sea. Some of them are rapidly developing far outside the area directly influenced by the Black Sea waters, including Taganrog Bay. The gelatinous predatory ctenophores and jellyfish from the Black Sea start to appear in this water body. Simultaneous development of these species escalates the consumption of fodder zooplankton by invaders. More substantial changes in taxonomic structure of the community are also observed; its development indicators and production are decreasing.
| Main Authors: | , , , , , , , |
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| Format: | Journal Contribution biblioteca |
| Language: | Russian |
| Published: |
2023
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| Subjects: | Jellyfish, Ctenophores, Численность, Биомасса, Медузы, Гребневики, Зоопланктон, Соленость, Географическое распределение, Aurelia aurita, Rhizostoma pulmo, Mnemiopsis leidyi, Beroe ovata, ASFA_2015::Y::Zooplankton, ASFA_2015::S::Salinity, ASFA_2015::T::Temperature, ASFA_2015::P::Population abundance (in number), ASFA_2015::B::Biomass, ASFA_2015::D::Distribution, |
| Online Access: | http://hdl.handle.net/1834/42943 |
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