Distribution pattern and niche overlap of sympatric breeding birds alonghuman-modified habitat gradients in Inner Mongolia,China  

作　　者：Xi Yang Lishi Zhang Piotr Tryjanowski Frédéric Jiguet Zheng Han Haitao Wang 

机构地区：[1]School of Life Sciences,Northeast Normal University,Changchun,130024,China [2]College of Agricultural,Hulunbuir University,Hulunbuir,021000,China [3]Animal's Scientific and Technological Institute,Agricultural University of Jilin,Changchun,130118,China [4]Department of Zoology,PoznańUniversity of Life Sciences,Wojska Polskiego 71C,PL-60-625,Poznan,Poland [5]CESCO,UMR7204 MNHN-CNRS-Sorbonne Université,CP135,43 Rue Buffon,75005,Paris,France [6]Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization,Northeast Normal University,Changchun,130024,China [7]Jilin Engineering Laboratory for Avian Ecology and Conservation Genetics,Northeast Normal University,Changchun,130024,China

出　　处：《Avian Research》2025年第1期11-20,共10页鸟类学研究(英文版)

基　　金：supported by the National Natural Science Foundation of China (No.32201304);the Fundamental Research Funds for the Central Universities (No.2412022QD026)。

摘　　要：The transformation of natural habitats into human-modified landscapes has far-reaching consequences for species distribution and abundance.As species adapt to these changing environments,shifts in distribution patterns,niche dynamics,and interspecies interactions may occur,impacting biodiversity at multiple levels and potentially leading to ecosystem imbalances.This study aims to assess the impact of variations in vegetation composition and human disturbance on the distribution of sympatric breeding birds and to determine the extent of niche overlap or differentiation among these species.We conducted field surveys and collected data on bird distribution,vegetation composition,and level of human disturbance in eastern Inner Mongolian grasslands.We focused on the six most frequently co-occurring breeding birds,representing a mix of sparrows,larks,and corvids.Generalized Additive Models revealed varying responses of species occurrence along habitat gradients.Species like the Eurasian Skylark(Alauda arvensis),Mongolian Lark(Melanocorypha mongolica),and Asian Shorttoed Lark(Calandrella cheleensis),increased in larger and more connected habitats,while others,like the Tree Sparrow(Passer montanus),Eurasian Magpie(Pica pica),and Barn Swallow(Hirundo rustica),adapted to more fragmented habitats.Niche analysis indicated habitat generalists tended to occupy larger niches than grassland specialists.Substantial niche overlap was also found among the six co-occurring bird species.Conservation efforts should consider the specific needs of specialist species and strive to maintain or restore critical grassland habitats.Additionally,promoting sustainable agricultural practices that balance the needs of birds and human activities can contribute to the coexistence of generalist and specialist bird species in modified landscapes.

关 键 词：Breeding birds Community assembly Habitat selection Niche overlap Species co-existence 

分 类 号：Q958[生物学—动物学]