Shallow-water taxocene of Gastropoda on soft bottoms in some areas along the Crimean coast (the Black Sea)
This paper summarizes our own data on the spatial and temporal distribution of species composition, abundance, biomass and trophic structure of gastropod mollusсs in the shallow-water (0–9 m, mostly up to 5 m in depth) areas along the Black Sea Crimean coast from Karkinit Bay in the northern part of the Crimean Peninsula to Laspi Bay in its South Coast. Over the period spanning from 2001 to 2020, 441 benthic samples were taken at 7 sites in sandy silt biotopes. A total of 31 species was recorded with a maximum (22 species) in Kruglaya (Round) Bay. However, only one species, Bittium reticulatum, was found in all of the investigated areas. The highest abundance (4,243±253 ind./m2) was recorded in the area covering the estuary of Chernaya (Black) River and the head of Sevastopol Bay, and the highest biomass (5.3±0.2 g/m2) was observed in Kazachya (Cossacks) Bay. By these parameters, Hydrobia acuta prevailed. The maximum abundance and biomass of gastropod molluscs in the investigated areas were characteristic of the spring and summer seasons, when the reproduction of the majority of species occurs. The trophic structure of Gastropoda taxocene was very diverse and represented by the following groups: detritivores, scavengers, polyphages, phytophages, predators, ectoparasites, and others (species with unknown type of feeding). In terms of the number of species, phytophages dominated (11 species); detritophages (1,045 ind./m2) dominated in terms of abundance, and scavengers (1.13 g/m2) were dominant by biomass.
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| Format: | Journal Contribution biblioteca |
| Language: | Russian |
| Published: |
2022
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| Subjects: | Geographical distribution, Abundance, Biomass, Bittium reticulatum, Hydrobia acuta, Dominant species, Географическое распространение, Биомасса, Численность, ASFA_2015::M::Marine mammals, |
| Online Access: | http://hdl.handle.net/1834/42156 |
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