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Spatial-time changes in the macrozoobenthos of the Chernaya river mouth and the top of Sevastopol'Skaya Bay (South-West Crimea)
Makarov, M.V.; Viter, T.V. (2021). Spatial-time changes in the macrozoobenthos of the Chernaya river mouth and the top of Sevastopol'Skaya Bay (South-West Crimea). Ученые записки Крымского федерального университета имени В.И. Вернадского. Биология. Химия 7(4): 92-107
In: Ученые записки Крымского федерального университета имени В.И. Вернадского. Биология. Химия. ISSN 2413-1725
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| Author keywords |
distribution; salinity; bottom macrofauna; abundance; biomass; occurrence; communities; trophic structure; seasonal dynamics |
| Auteurs | | Top |
- Makarov, M.V.
- Viter, T.V.
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| Abstract |
Data on spatial and seasonal distribution of benthic macroinvertebrate communities along a salinity gradient (in average from 11,6 to 15,8 ‰) both in Chernaya River estuary and Sevastopol Bay head on 3 stations on depth 0,1 m during in November 2019-September 2020 were obtained at first. A total of 24 quantitative benthic samples (8 at each station on 2 replicates in different months) were taken. A total of 38 macrozoobenthos species, belonging to 5 phylums: Cnidaria, Platyhelminthes, Annelida (11 species), Mollusca (16 species) and Arthropoda (9 species) were identified. Macrozoobenthos was distributed unevenly across the stations. Number of species increased with the increasing salinity from Chernaya River estuary to Sevastopol Bay head. So, the lowest number of species (only 9) was found at the station 1 in River Chernaya, perhaps due to low salinity and surge (tidal) phenomena. The majority of species found here were euryhaline and (or) can easily withstand reduced salinity. The highest number of species was found at station 2 at the mouth of River Chernaya and at station 3 at the head of Sevastopol Bay. 28 species were found on each of those stations, but their species compositions were slightly different. The Chekanovsky-Sorensen similarity index was 0,64. |
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