Kudelkina P., Vshivkova T., Moshchenko A.
В издании The 6th Biannual Conference of the Asian Society for Hydrobiology: Program & abstract book
Год: 2024 Страницы: 38
Studying the state of river ecosystems in protected areas is an important part of the work when creating regional systems for bioassessment of running waters. In the Russian Far East, the development of Rapid Bioassessment Protocols for Streams and Rivers (RFE RBPs) is being carried out in the Laboratory of Freshwater Hydrobiology, Federal Scientific Center for Biodiversity FEB RAS. To adapt RFE RBPs to the conditions and fauna of the Jewish Autonomous Region, since 2018, research began on the fauna and structure of benthic communities in protected areas not affected by anthropogenic impact. In the natural territory of the “Bastak” State Nature Reserve (mountain forest zone), 12 sample sites were chosen and 44 macrozoobenthos samples were taken: 26 qualitative, 14 conditionally quantitative (D-net) samples, and 4 quantitative (Surber Sampler) samples collected according to standard procedures (Vshivkova et al., 2019). To compare the similarity of species assemblages we used Ward’s method with application of the Bray-Curtis similarity coefficient, which made it possible to divide the analyzed benthic communities into two groups with a probability The 6th Biannual Conference of the Asian Society for Hydrobiology 38 of 95-98%. Two types of “faunas” have been identified, corresponding to two dominant communities: type I – lotic riffle biotopes of the rithral zone (in medial), type II – pool biotopes of the rithral zone (ripal). The same division was achieved by the use of a classification procedure based on fuzzy sets using the ordination method: the “core” of these agglomerations consists of the same species assemblages (samples) that were classified by the cluster method. Keywords: bottom communities, running waters, freshwater bioassessment
