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Fishes Diversity in the Amur River Epirithral |
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| © 2018 A. L. Antonov |
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| Institute of Water and Ecological Problems FEB RAS, Khabarovsk |
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| E-mail:
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| In 1975–2016, taxonomic and cenotic diversity of fishes in the epirithral zone of the Amur basin rivers was studied. A total of 19 species, referred to four orders, five families, and 11 genera have been noted. Basing on analyses of species distribution, 7 ichthyogeographical areas have been distinguished. The greatest number of species (16) was found in the ”Lower Amur” and ”Amgun” areas; the smallest, in the ”Upper Zeya” (10). Specifics of species diversity in the ichthyogeographic areas is determined by distribution peculiarities of some species – anadromous salmons, graylings, and the southern dolly varden. The analyses of species composition, habitation pattern, species abundance,, and the age group ratio in the epirithral zone resulted in distinguishing two types of ichthyocenosis: 1) upper sites (5–9 species) and 2) lower sites (10–16 species). |
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| Keywords: fishes, diversity, epirithral, Amur basin. |
| Full text [In Russian] |
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