Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций
Конференция: Siberian Scientific Workshop on Data Analysis Technologies with Applications, SibDATA 2020; Krasnoyarsk; Krasnoyarsk
Год издания: 2020
Ключевые слова: cluster analysis, Correlation graphs, rheophilic zoobenthos, river Kan, spatial distribution
Аннотация: In the rivers of the Yenisei basin, benthic invertebrates play a major role in feeding most Siberian valuable fish species. This report presents advanced material on zoobenthos of the river Kan (one of the major tributaries of the Yenisei river in its middle course). Litho-psammo-rheophilic biocenosis of benthic invertebrates is moПоказать полностьюst developed; 99 species and forms are recorded there. The total abundance of zoobenthos is formed by mayflies, caddisflies and chironomids, and biomass by caddisflies and mayflies. The correlation analysis reveals a consistent variation in the abundance of structure-forming insect orders (mayflies, stoneflies and caddisflies). The clustering of data on the abundance of families reveals the consistency with the geographical zoning of the river Kan and change in hydrological conditions. In the longitudinal profile of the river, there is a change of the dominant families among mayflies in Heptageniidae - Ephemerellidae - Ephemeridae; families of caddisflies - from Glossosomatidae to Hydropsychidae. The water temperature during the study period determined up to 30% of the variance in the number of stoneflies, dipterans, and the "other"group. For caddisflies, the influence of oxygen dissolved in water is more significant (20% of the explained dispersion).
Журнал: CEUR Workshop Proceedings
Выпуск журнала: 2727
Номера страниц: 1-7