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首页> 外文期刊>Journal of Ichthyology >Distribution and Seasonal Changes in Fish Abundance in the Estuary of the RazdoPnaya River (Peter the Great Bay), Sea of Japan
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Distribution and Seasonal Changes in Fish Abundance in the Estuary of the RazdoPnaya River (Peter the Great Bay), Sea of Japan

机译：日本海RazdoPnaya河（彼得大湾）河口鱼类丰度的分布和季节变化

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摘要

The distribution and seasonal dynamics of fish abundance in the estuary of the RazdoPnaya River (Peter the Great Bay) depending on several abiotic factors are considered. It is established that fish biomass increases with an increase in salinity and decrease in water temperature (both in space and time). Freshwater stenohaline species dominate in the upper part of the estuary, semianadromous and freshwater euryhaline species dominate in the middle part, and semianadromous and marine species dominatein the lower part. The seasonal succession of ichthyocenosis includes two periods: warm (May—October) and cold (November—April). The warm period is characterized by a low biomass (4—10 g/m2) and maximum species richness (22—29 species) against the background of a decrease of the penetration into the estuary of high-saline waters and an increase in the water discharge, turbidity, and temperature. Freshwater species dominate in catches, and subtropical migrants appear. In the cold period, species richness is minimal (2—12 species), and biomass is, on the contrary, very high (on average, 71—374 g/m2); water temperature and discharge are minimal. In catches, the proportion of semianadromous and marine species is maximum.
机译：考虑到拉兹多普纳亚河（彼得大湾）河口鱼类丰富度的分布和季节动态，取决于几种非生物因素。可以确定的是，鱼的生物量随着盐度的增加和水温的下降（时空）而增加。河口上部主要为淡水蛇类鱼类，中部主要为半厌食和淡水鱼腥藻，下部为半厌食和海洋种类。鱼鳞病的季节性演替包括两个时期：温暖（5月至10月）和寒冷（11月至4月）。温暖期的特点是生物量低（4-10 g / m2），最大物种丰富度（22-29种），其背景是高盐度水入河口的渗透性降低，水体增加排放物，浊度和温度。淡水物种在渔获物中占主导地位，并出现了亚热带移民。在寒冷时期，物种丰富度很小（2-12种），而生物量却很高（平均71-374 g / m2）;水温和排放量极小。在渔获物中，半厌恶和海洋物种的比例最大。

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