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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
general
Effects of land-use change and related pressures on alien and native subsets of island communities
PLoS ONE, Volume 15, No. 12 December, Article e0227169, Year 2020
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Description
Island species and habitats are particularly vulnerable to human disturbances, and anthropogenic changes are increasingly overwriting natural island biogeographic patterns. However, quantitative comparisons of how native and alien assemblages respond to human disturbances are scarce. Using data from 6,242 species of vertebrates, invertebrates and plants, from 7,718 sites on 81 islands, we model how land-use change, human population density and distance to the nearest road affect local assemblages of alien and native species on islands. We found that land-use change reduces both richness and abundance of native species, whereas the number and abundance of alien species are high in plantation forests and agricultural or urban sites. In contrast to the long-established pattern for native species (i.e., decline in species number with island isolation), more isolated islands have more alien species across most land uses than do less isolated islands. We show that alien species play a major role in the turnover of island assemblages: our models show that aliens outnumber natives among the species present at disturbed sites but absent from minimally-disturbed primary vegetation. Finally, we found a homogenization pattern for both native and alien assemblages across sites within most land uses. The declines of native species on islands in the face of human pressures, and the particular proneness to invasions of the more remote islands, highlight the need to reduce the intensity of human pressures on islands and to prevent the introduction and establishment of alien species. © 2020 Sánchez-Ortiz et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Authors & Co-Authors
Sánchez-Ortiz, Katia
United Kingdom, London
The Natural History Museum, London
United Kingdom, London
Imperial College London
De Palma, Adriana
United Kingdom, London
The Natural History Museum, London
Essl, Franz
Austria, Vienna
Universität Wien
Dawson, Wayne
United Kingdom, Durham
Durham University
Kreft, Holger
Germany, Gottingen
Georg-august-universität Göttingen
Pergl, Jan
Czech Republic, Pruhonice
Institute of Botany of the Academy of Sciences of the Czech Republic
Pyšek, Petr
Czech Republic, Pruhonice
Institute of Botany of the Academy of Sciences of the Czech Republic
Czech Republic, Prague
Charles University
van Kleunen, Mark
Germany, Konstanz
Universität Konstanz
China, Linhai
Taizhou University
Weigelt, Patrick
Germany, Gottingen
Georg-august-universität Göttingen
Purvis, Andy
United Kingdom, London
The Natural History Museum, London
United Kingdom, London
Imperial College London
Statistics
Citations: 11
Authors: 10
Affiliations: 10
Identifiers
Doi:
10.1371/journal.pone.0227169
ISSN:
19326203
Research Areas
Health System And Policy
Study Design
Cross Sectional Study
Study Approach
Quantitative