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

Author:

Askeyev Arthur1ORCID,Askeyev Oleg1ORCID,Askeyev Igor1ORCID,Monakhov Sergey1ORCID,Sparks Tim H.2ORCID

Affiliation:

1. 1 Tatarstan Academy of Sciences, Institute of Problems in Ecology and Mineral Wealth , Daurskaya Street 28, Kazan, RU-420087, Tatarstan Republic , Russian Federation

2. 2 Department of Zoology , Poznań University of Life Sciences , Wojska Polskiego 71c, 60-625 Poznań , Poland & Museum of Zoology , University of Cambridge , Downing Street , Cambridge , UK

Abstract

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.

Publisher

Walter de Gruyter GmbH

Subject

Microbiology

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