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Erschienen in: Urban Ecosystems 3/2022

24.11.2021

Urbanization affects the richness of invasive alien trees but has limited influence on species composition

verfasst von: Gustavo Heringer, Lucas Del Bianco Faria, Pedro Manuel Villa, Amanda Urbano Araújo, Ana Luiza Moreira Botan, Rafael Dudeque Zenni

Erschienen in: Urban Ecosystems | Ausgabe 3/2022

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Abstract

Urban areas are strongly transformed by the human population and these environmental changes can affect the richness and composition of invasive alien trees (IAT) across cities. In this study, we investigate the role of urbanization and climate variables on richness and species composition of IAT in cities from Brazil. We investigated (i) the relative contribution and how variables related to urbanization affects the patterns of richness and composition; and (ii) the relative contribution and how variables related to climate affects richness and composition of IAT. Thus, we used occurrences of IAT in 93 urban areas in Brazil gathered from 130 references. We tested the variation partitioning using three models with variables related to urbanization, climate, and spatial correlation for richness and species composition of IAT. Next, we tested the significance of each set of variables on the richness and species composition of IAT. Urbanization variables explained 18% of the variation in species richness of IAT, whereas climate explained 18% of the variation in species composition of IAT. Demographic density (habitants per km2) positively affected the richness of IAT, whereas the percentage of urban forest influenced species composition. Köppen climate zones affected richness while the covariate temperature annual range had a negative effect on richness. Temperature annual range, annual precipitation, precipitation of driest quarter, and precipitation of warmest quarter affected the species composition of IAT. We confirmed urban variables have a relevant influence on species richness, but climate variables are still important to understand the composition of IAT across cities. Thus, species richness is affected at a local scale by urbanization, and species composition by climate at broader scales.

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Metadaten
Titel
Urbanization affects the richness of invasive alien trees but has limited influence on species composition
verfasst von
Gustavo Heringer
Lucas Del Bianco Faria
Pedro Manuel Villa
Amanda Urbano Araújo
Ana Luiza Moreira Botan
Rafael Dudeque Zenni
Publikationsdatum
24.11.2021
Verlag
Springer US
Erschienen in
Urban Ecosystems / Ausgabe 3/2022
Print ISSN: 1083-8155
Elektronische ISSN: 1573-1642
DOI
https://doi.org/10.1007/s11252-021-01189-1

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