Vineyards,but not cities,are associated with lower presence of a generalist bird,the Common Blackbird(Turdus merula),in Western France  

作　　者：Bertille Mohring Francois Brischoux Frédéric Angelier 

机构地区：[1]Centre d’Etudes Biologiques de Chizé,UMR 7372,CNRS–La Rochelle Université,79360 Villiers en Bois,France [2]Environmental and Marine Biology,Abo Akademi University,20520 Turku,Finland.

出　　处：《Avian Research》2021年第1期17-27,共11页鸟类学研究（英文版）

基　　金：funded by the Agence Nationale de la Recherche(ANR project URBASTRESS,ANR-16-CE02-0004-01 to F.A.,and ANR project VITIBIRD to F.A.);by the Région Nouvelle-Aquitaine(MULTISTRESS project);by the Agence nationale de sécuritésanitaire de l’alimentation,de l’environnement et du travail(ANSES project Biodi Tox#2019/1/031);by the Centre National de la Recherche Scientifique。

摘　　要：Background:Land-use change is one of the main drivers of the global erosion of biodiversity.In that context,it is crucial to understand how landscape characteristics drive the presence of rare endangered species.Nevertheless,it is also important to study common species in multiple habitats,because they represent a large proportion of biodiversity and are essential to maintain ecological functions.Interestingly,some habitats,as farmlands with permanent crops(e.g.vineyards),have been overlooked in the literature.Methods:In this study,we investigated the distribution of a widespread and common bird species,the Common Blackbird(Turdus merula),within and between the three main habitats of our study area(rural Western France).We specifically focused on(1)woodlands,(2)farmlands with a high vineyard coverage,and(3)moderately urbanized areas.Specifically,we aimed to assess the beneficial and detrimental effects of these habitats and their fine-scale composition on the presence of a common bird species,relying on a survey by point counts(nearly 100 locations).We studied the effects of habitats and gradients of fine-scale habitat composition on blackbird presence using logistic regression analyses.Results:Blackbirds were present in all studied habitats.However,their presence varied between habitats,being lower in vineyards than in woodlands and cities.In woodlands and cities,fine-scale analyses did not reveal any component driving the species'presence.However,we found that shrub and tree vegetation cover had a significant positive effect on blackbird presence in vineyards.Conclusions:Our results are in agreement with the definition of a generalist species.Interestingly,species distribution varied between habitats.The high presence of blackbirds in urban areas suggests that medium-sized cities,despite their artificialization,do not constrain the settlement of this former forest specialist and that green spaces may allow blackbirds to thrive in medium-sized cities.On the contrary,we found an impoverished presence of blackbird

关 键 词：Agriculture Biodiversity BIRDS Forest Turdus merula Urbanization VINEYARDS 

分 类 号：Q958[生物学—动物学]