INFLUENCE OF ACTIVITY OF COMMON BEAVER (CASTOR FIBER L.) ON ZOOBENTHOS OF SMALL SUB-MOUNTAIN RIVERS IN ABSENCE OF LARGE DAMS, ON EXAMPLE OF RIVER KUZHA
Abstract
Collection of samples was carried near river Kuzha in nature reserve Shulgan-Tash by Laboratory of animal ecology and biomonitoring «EFA» in year 2017. In course of research, 20 taxons of macroinvertebrates of river Kuzha were determined: Ephemeroptera (dayfly), Plecoptera (stonefly) both in larval stage, which are the significant indicators of eutrophication level. Preliminary conclusion was made: life-sustaining activity of European beaver is making noticeable difference in life-sustaining activity of zoobenthos, even though beaver’s habitat development is low in this area, thus increasing percent of nonrheophilic species.
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