Abstract
Biomass and species composition of demersal fish in the bottom biotopes of Peter the Great Bay (Japan Sea) are considered on the data of 2428 trawl catches in 36 surveys conducted by Pacific Res. Inst. of Fisheries and Oceanography (TINRO) in 1978–2009. The most common 20 species are ranked, as the basis of ichthyocenoses, by areas of the bay. The long-term mean total biomass of fish in the bay is estimated as 75,500 t. Arabesque greenling Pleurogrammus azonus, japanese flounder Pseudopleuronectes yokohamae and saffron cod Eleginus gracilis are distinguished by the highest mean biomass. Mean density of fish distribution varied from 6.2 to 19.4 t/km2. It was the highest in the middle Ussuri Bay (13.95 t/km2; mean fish biomass in the area 18,230 t) and in the estuarine areas. Besides, the data on long-term mean biomass of benthos collected in the same trawl surveys and zooplankton sampled in 117 plankton surveys in 1988–2013 are presented.
Highlights
Рассматриваются доминирующие виды рыб в донных и придонных биотопах зал
Biomass and species composition of demersal fish in the bottom biotopes of Peter the Great Bay (Japan Sea) are considered on the data of 2428 trawl catches in 36 surveys conducted by Pacific Res
Arabesque greenling Pleurogrammus azonus, japanese flounder Pseudopleuronectes yokohamae and saffron cod Eleginus gracilis are distinguished by the highest mean biomass
Summary
Рассматриваются доминирующие виды рыб в донных и придонных биотопах зал. Петра Великого (Японское море) в 8 биостатистических районах по данным 2428 тралений, выполненных экспедициями ТИНРО в 36 съемках с 1978 по 2009 г. В Средне-Амурском районе доминируют японская камбала (25,1 %) и взрослая навага Eleginus gracilis (22,7 %), а к субдоминирующим относятся керчак-яок Myoxocephalus jaok (7,3 %), полосатая камбала (6,5 %), южный одноперый терпуг Pleurogrammus azonus (5,9 %), остроголовая Cleisthenes herzensteini и звездчатая Platichthys stellatus камбалы (по 3,9 %). В этом районе доминируют японская камбала (25,0 %), мелкочешуйная красноперка (12,1 %), 4 субдоминантных вида камбал — полосатая, длиннорылая Limanda punctatissima, малоротая Glyptocephalus stelleri и желтополосая Pseudopleuronectes herzensteini (25,8 %). Биомасса как первых 20 видов, так и всех рыб в этом районе наиболее высокая — 16,77 и 18,23 тыс.
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