Видовое богатство зообентоса на различных глубинах Керченского предпроливья Черного моря

Терентьев, А.С.

Автор: Терентьев А.С.
Журнал: Труды Южного научно-исследовательского института рыбного хозяйства и океанографии
Том: 54
Год издания: 2017
Издательство: Керченский филиал (ЮгНИРО) федерального государственного бюджетного научного учреждения Азовский научно-исследовательский институт рыбного хозяйства
Местоположение издательства: Керчь
Первая страница: 82
Последняя страница: 97
Аннотация: 132 bottom species have been identified at the depth range from 10 to 100 meters in the Kerch pre-strait area of the Black Sea. The highest species diversity was recorded at the depth of 20-30 m: 80 bottom species have been found there. This number reduced to 16 species at the depth of 90-100 m. All pre-strait zoobenthos can be divided into two big strata; the border between them goes close to 50 m isobathic line. These strata are distinguished both for zoobenthos in general and for the majority of big taxonomic groups. The border between the strata corresponds to the upper border of phaseoline silts distribution. Shallow water stratum is noted for the species diversity that is higher, than in the deepwater one. Shallow-water stratum is subdivided into several smaller strata, which are especially evident in dealing with individual taxonomic groups (sponges, crustaceans, bivalve molluscs). Changes in the species diversity of the deep-water stratum are usually presented in the form of its impoverishment. At the depth of 40-60 m, an ecotone signifies the transition from the silted mussel shellground community to the community of phaseoline silt. Calculations have shown that species diversity depends on the depth (11-22 %), on the ground type (20-32 %) and on the combined impact of depth and ground type (13-29 %). The appearance of smaller strata at the layer above phaseoline silt depends mostly on the distribution ogrounds. While deep-water stratum is located of mostly on phaseoline silt, the shallow-water one lies on sand, shelly and silt grounds, all of which are closely connected to the depth. The diversity of grounds at the depths less than 50 m can explain the appearance of small strata, differing from each other in terms of species diversity.
Добавил в систему: Терентьев Александр Сергеевич

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Видовое богатство зообентоса на различных глубинах Керченского предпроливья Черного морястатья Исследовательская статья

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