Arthropod abundance modulates bird community responses to urbanization

dc.contributor.authorPlanillo, Aimara
dc.contributor.authorKramer‐Schadt, Stephanie
dc.contributor.authorBuchholz, Sascha
dc.contributor.authorGras, Pierre
dc.contributor.authorvon der Lippe, Moritz
dc.contributor.authorRadchuk, Viktoriia
dc.description.abstractAim We analysed the role of species interactions in wildlife community responses to urbanization. Specifically, we investigated non‐trophic associations within a bird community and the role of trophic interactions in the responses of bird species to the urbanization gradient. Location City‐state of Berlin, Central Europe. Methods Arthropod and bird abundances were sampled across the study area and analysed using hierarchical joint species distribution models (JSDMs). Urbanization gradient was defined by environmental predictors reflecting anthropogenic disturbances, for example noise level and human population density, as well as nature‐like features, for example tree cover and open green area. Relevant environmental predictors for each group and relevant spatial resolution were selected a priori using AICc. Arthropod abundances were modelled for the bird sampling transects and included as additional predictor variable in the bird community model. In this model, we used abundances and traits of 66 breeding bird species as response variables. Results Bird species responses to urbanization were captured by the interaction between invertebrate abundance and environmental predictors. We identified three groups of birds: the urban group (12 species) showed no decrease in abundance along the urbanization gradient and were not related to arthropods abundance; the woodland group (18 species) were positively related to tree cover and arthropod abundance, also in areas with high anthropogenic disturbance; and the nature group (36 species) were positively related to arthropod abundance, but the species abundance decreased sharply with increasing anthropogenic disturbance. All the non‐trophic associations found within the bird community were positive. Main conclusions Arthropod abundance clearly modulated birds’ responses to the urbanization gradient for most species. Especially at moderate levels of anthropogenic disturbance, the abundance of arthropods is key for the occurrence and abundance of bird species in urban areas. To maintain bird diversity in urban green areas, management measures should focus on maintaining and increasing invertebrate abundance.en
dc.rightsThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
dc.subject.ddc570 Biowissenschaften; Biologiede
dc.subject.otherarthropod abundanceen
dc.subject.othercommunity compositionen
dc.subject.otherjoint species distribution modelsen
dc.subject.otherspecies interactionsen
dc.subject.otherurban ecologyen
dc.subject.otherurbanization gradienten
dc.subject.otherwildlife diversityen
dc.titleArthropod abundance modulates bird community responses to urbanizationen
dcterms.bibliographicCitation.journaltitleDiversity and Distributionsen
dcterms.bibliographicCitation.originalpublisherplaceNew York, NYen
tub.affiliationFak. 6 Planen Bauen Umwelt>Inst. Ökologie>FG Planungsbezogene Tierökologiede
tub.affiliation.facultyFak. 6 Planen Bauen Umweltde
tub.affiliation.groupFG Planungsbezogene Tierökologiede
tub.affiliation.instituteInst. Ökologiede
tub.publisher.universityorinstitutionTechnische Universität Berlinen
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