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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...
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