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Historical and Current Distribution of the Brown Trout, European Grayling and Volga Nase in Small Rivers in the Republic of Tatarstan Cover

Historical and Current Distribution of the Brown Trout, European Grayling and Volga Nase in Small Rivers in the Republic of Tatarstan

Open Access
|Jan 2024

Abstract

We have studied the historical and current distribution of brown trout, European grayling, and Volga nase in the Republic of Tatarstan. The influence of environmental variables on the current distribution of these fish was assessed using regression methods. The probability of occurrence in small rivers of all three fish species is currently low, ranging from 2.8 to 5.3%. Each of the recorded environmental variables had statistically significant relationships with presence/absence of at least one fish species, but only two variables (elevation and human impact) significantly affected the probability of occurrence of all species in the study.

DOI: https://doi.org/10.2478/trser-2023-0011 | Journal eISSN: 2344-3219 | Journal ISSN: 1841-7051
Language: English
Page range: 39 - 50
Published on: Jan 11, 2024
Published by: Lucian Blaga University of Sibiu
In partnership with: Paradigm Publishing Services
Publication frequency: 3 issues per year
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© 2024 Arthur Askeyev, Oleg Askeyev, Igor Askeyev, Sergey Monakhov, Tim H. Sparks, published by Lucian Blaga University of Sibiu
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.