Динамика запаса мидии в Керченском предпроливье Черного моря

Терентьев, А.С.

Автор: Терентьев А.С.
Сборник: Морские промысловые беспозвоночные и водоросли: биология и промысел. К 70-летию со дня рождения Бориса Георгиевича Иванова
Серия: Труды ВНИРО
Том: 147
Глава в коллективной монографии
Год издания: 2007
Место издания: Издательство ВНИРО Москва
Первая страница: 335
Последняя страница: 349
Аннотация: Long-term changes in distributin, abundance and biomass of common mussel Mytilus galloprovincialis (Lamark, 1819) were studied on the Black Sea shelf adjacent to the Kerch Strait by means of benthic survey conducted between 1986 and 1990. The mussel occurred throughout the survey area from the shoreline down to 42 m. Between 1986 and 1990 the occurrence frequency of mussels in the studied area reduced 2-3 times: from 64-82% to 21-35%, and its abundance reduced 3-5 times: from 223+-42 to 56.0+-8.8 billion individuals (from 437+-21 to 217+-21 thousand tons). Enture mussels settlement on the shelf adjacent to the Kerch Strait split into a number of small local settlements. The age structure of mussel settlements between 1986 amd 1990 changed as well. Fingerlings were predominant at the beginning of the research (1986), comprising about the half of the population by numbers. In 1990 their share reduced to 18%. The most abundant group in 1990 was 2-years mussels (44% by number). In all the depth ranges excluding intervals 20-30 m the portion of fingerlings became less, i.e. inflow of juveniles into the population reduced. Progressive ageing of the mussel population was especially apparent at depth greater than 30 m. The most probable reason of declining the mussel stock is the spoil ground in the central-eastern part of the Black Sea shelf adjacent to the Kerch Strait.
Добавил в систему: Терентьев Александр Сергеевич

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Динамика запаса мидии в Керченском предпроливье Черного морястатья Исследовательская статья

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