caa a22 4500 606228136 CHVBK 20210128101202.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s10641-014-0358-0 doi (NATIONALLICENCE)springer-10.1007/s10641-014-0358-0 River fish assemblages in relation to environmental factors in the eastern extremity of Europe (Tatarstan Republic, Russia) [Elektronische Daten] [Oleg Askeyev, Igor Askeyev, Arthur Askeyev, Sergey Monakhov, Nur Yanybaev] Fish assemblages and environmental variables were studied in 245 sites in small and mid-sized rivers of the Tatarstan Republic. The basic aim of this investigation was to model the habitat requirements of the 26 most common freshwater fish species at the eastern edge of Europe since the spatial variation of the assemblages of these fish species is little understood there. The impact of environmental factors on species distribution using both presence-absence and abundance data was analyzed with regression methods and ordination methods, which are widely used by European ichthyologists elsewhere. Ordination analysis demonstrated an upstream-downstream gradient of the fish assemblages. Regression analysis indicated that basic predictors of species preference were elevation and "size” of river. For the first time in Eastern Europe, optimum points and niche breadth for fish species along basic environmental gradients were estimated. Niche breadth (tolerance) was highly variable between species. Generally, estimated relationships between environmental factors and the probability of fish presence and abundance were consistent with known fish ecology. Springer Science+Business Media Dordrecht, 2014 Environmental factors nationallicence Small and mid-sized rivers nationallicence Fish species distribution model nationallicence Upstream-downstream gradient nationallicence Niche positions and breadth nationallicence Askeyev Oleg Institute of Problems in Ecology and Mineral Wealth, Tatarstan Academy of Sciences, Tatarstan Republic, Kazan, Russia aut Askeyev Igor Institute of Problems in Ecology and Mineral Wealth, Tatarstan Academy of Sciences, Tatarstan Republic, Kazan, Russia aut Askeyev Arthur Institute of Problems in Ecology and Mineral Wealth, Tatarstan Academy of Sciences, Tatarstan Republic, Kazan, Russia aut Monakhov Sergey Institute of Problems in Ecology and Mineral Wealth, Tatarstan Academy of Sciences, Tatarstan Republic, Kazan, Russia aut Yanybaev Nur Bashkir State Nature Reserve, Ufa, Russia aut Environmental Biology of Fishes Springer Netherlands 98/5(2015-05-01), 1277-1293 0378-1909 98:5<1277 2015 98 10641 https://doi.org/10.1007/s10641-014-0358-0 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10641-014-0358-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Askeyev Oleg Institute of Problems in Ecology and Mineral Wealth, Tatarstan Academy of Sciences, Tatarstan Republic, Kazan, Russia aut NATIONALLICENCE 700 1- Askeyev Igor Institute of Problems in Ecology and Mineral Wealth, Tatarstan Academy of Sciences, Tatarstan Republic, Kazan, Russia aut NATIONALLICENCE 700 1- Askeyev Arthur Institute of Problems in Ecology and Mineral Wealth, Tatarstan Academy of Sciences, Tatarstan Republic, Kazan, Russia aut NATIONALLICENCE 700 1- Monakhov Sergey Institute of Problems in Ecology and Mineral Wealth, Tatarstan Academy of Sciences, Tatarstan Republic, Kazan, Russia aut NATIONALLICENCE 700 1- Yanybaev Nur Bashkir State Nature Reserve, Ufa, Russia aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/5(2015-05-01), 1277-1293 0378-1909 98:5<1277 2015 98 10641