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首页> 外文期刊>Journal of Ichthyology >Distribution, Abundance, and Size Structure of Amur Kaluga Acipenser dauricus and Amur Sturgeon A. schrenckii in the Lower Amur and Amur Estuary
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Distribution, Abundance, and Size Structure of Amur Kaluga Acipenser dauricus and Amur Sturgeon A. schrenckii in the Lower Amur and Amur Estuary

机译：下阿穆尔河和阿穆尔河口的阿鲁卡鲁uga（Amurs Kaluga Acipenser dauricus）和阿穆尔urge鱼A. schrenckii的分布，丰度和大小结构

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摘要

Distribution, population structure, and abundance of Amur kaluga Acipenser dauricus and Amur sturgeon A. schrenckii in the Lower Amur and Amur Estuary have been considered based on the materials of two surveys performed in 2011. Both species occur along almost the entire length of the Lower Amur and in major part of the Amur Estuary. The density of their aggregations has significantly decreased in most regions of the river if compared to the 1960s. In the Amur Estuary, A. dauricus and A. schrenckii are most abundant in freshwater and light salted water bodies of its western part. In 2011, the abundance and biomass of A. dauricus and A. schrenckii in the Lower Amur and Amur Estuary was 345 000 specimens and 7110 tons and 289 000 specimens and 1946 tons, respectively.
机译：根据2011年进行的两次调查，已经考虑到了下阿穆尔河和阿穆尔河口的阿穆尔河kaluga Acipenser dauricus和阿穆尔st鱼A. schrenckii的分布，种群结构和丰富度。这两种物种几乎都发生在下河谷的整个长度上阿穆尔河和阿穆尔河河口的主要部分。与1960年代相比，河流大部分地区的聚集体密度已大大降低。在阿穆尔河口，其西部的淡水和淡咸水体中的金龟菇和schrenckii含量最高。 2011年，在下阿穆尔河和阿穆尔河口的金黄色葡萄球菌和schrenckii的丰度和生物量分别为34.5万个标本，7110吨和28.9万个标本和1946吨。

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