Ecosystems Transformation and Assessment of Bird Resources in the Republic of Tatarstan (Russia)

Ilgizar Rakhimov,Kadrya Ibragimova,M Redina,D Stom,A Nikol’Skii,S Lamarton,A Myaskov,A Khaustov,S Cherchesova,X Li,N Chernykh,T Ledashcheva,E Nesterov,Y Jang,R Jashchenko,I Bica,S Mickevicius,K Lebedev

doi:10.1051/e3sconf/202016903002

Abstract

The intensification of economic activities, wide scales of the destruction of the woods, the growth of the areas of the worked lands, creation of water basins, urbanization and other forms of transformation of natural landscapes for last centuries have essentially changed the conditions of animals’ habitation. 305 species of birds can be found within the territory of Tatarstan. We performed an analysis of the state of the ornithofauna over the past 120 years, which allowed us to get estimates of species density and distribution in the republic. The research material is a gain to the knowledge about ornithofauna of Tatarstan, the state of each species populations and may be used to develop a regional monitoring system.

Highlights

Among the problems facing to ornithology, the major is preservation of biological diversity
The pattern of anthropogenic factors influence on ornithological complexes in Tatarstan has increased over the past century due to certain reasons
Resettlement of some of bird species across anthropogenic landscapes is a relatively recent phenomenon that can be observed over large areas even within the life-span of one generation, which cannot be compared with any of the known natural processes in terms of speed and outcomes of the said changes

Summary

Introduction

Among the problems facing to ornithology, the major is preservation of biological diversity. During epoch of intensive anthropogenous influence on fauna, including birds, death of many species, serious reorganizations in communities have forced to realize that biodiversity preservation was one of aspects of a sustainable development of a modern society and the major principle of nature protection activity. The pattern of anthropogenic factors influence on ornithological complexes in Tatarstan has increased over the past century due to certain reasons. The key factor of changes in the avifauna of the Middle Volga region is an intensive human economic activity. The processes related to the active development of the region's territory cause disruptions of avifauna. Non-periodic fluctuations of faunal boundaries of certain bird species in the context of anthropogenic transformation of natural systems are scrutinized by ornithologists. Small populations of birds in forest outlier, once numerous in natural wildlife habital areas, leave them, repopulate once again

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