Open AccessCurrent Status of the Manya River Ecosystem
Publication year - 2014
Publication title -
vodnoe hozâjstvo rossii: problemy, tehnologii, upravlenie/vodnoe hozâjstvo rossii : problemy, tehnologii, upravlenie
Language(s) - English
Resource type - Journals
eISSN - 2686-8253
pISSN - 1999-4508
DOI - 10.35567/1999-4508-2014-1-6
Subject(s) - spawn (biology) , siltation , ecosystem , placer mining , drainage basin , environmental science , sediment , ecology , fishery , geography , geology , biology , geomorphology , cartography , geochemistry
The article presents the results of studies on the impact of long-term development of placer gold deposits on the ecosystem of the small mountain river in Subpolar Urals (basin of the Ob River) where whitefish species spawn. Significant reduction in species diversity and quantitative characteristics of epiliton and invertabrate communities in the regions located directly below the mining sites have been found. It is shown that an increased intake of fine sediment leads to a violation of the conditions of valuable whitefish species spawn incubation of as a result of siltation of spawning grounds.