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Identifying the factors that determine the severity and type of alien bird impacts

dc.contributor.authorEvans, Thomasen_ZA
dc.contributor.authorKumschick, Sabrinaen_ZA
dc.contributor.authorSekercioglu, Cagan H.en_ZA
dc.contributor.authorBlackburn, Tim M.en_ZA
dc.date.accessioned2020-01-29T10:37:28Z
dc.date.available2020-01-29T10:37:28Z
dc.date.issued2018
dc.identifier.citationEvans, T., et al. 2018. Identifying the factors that determine the severity and type of alien bird impacts. Diversity and Distributions, 24(6):800–810, doi:10.1111/ddi.12721
dc.identifier.issn1472-4642 (online)
dc.identifier.issn1366-9516 (print)
dc.identifier.otherdoi:10.1111/ddi.12721
dc.identifier.urihttp://hdl.handle.net/10019.1/107392
dc.descriptionCITATION: Evans, T., et al. 2018. Identifying the factors that determine the severity and type of alien bird impacts. Diversity and Distributions, 24(6):800-810, doi:10.1111/ddi.12721.
dc.descriptionThe original publication is available at https://onlinelibrary.wiley.com
dc.description.abstractAim: To identify traits related to the severity and type of environmental impacts generated by alien bird species, in order to improve our ability to predict which species may have the most damaging impacts. Location: Global. Methods: Information on traits hypothesized to influence the severity and type of alien bird impacts was collated for 113 bird species. These data were analysed using mixed effects models accounting for phylogenetic non-independence of species. Results: The severity and type of impacts generated by alien bird species are not randomly distributed with respect to their traits. Alien range size and habitat breadth were strongly associated with impact severity. Predation impacts were strongly associated with dietary preference, but also with alien range size, relative brain size and residence time. Impacts mediated by interactions with other alien species were related to alien range size and diet breadth. Main conclusions: Widely distributed generalist alien birds have the most severe environmental impacts. This may be because these species have greater opportunity to cause environmental impacts through their sheer number and ubiquity, but this could also be because they are more likely to be identified and studied. Our study found little evidence for an effect of per capita impact on impact severity.en_ZA
dc.description.urihttps://onlinelibrary.wiley.com/doi/10.1111/ddi.12721
dc.format.extent11 pages
dc.language.isoen_ZAen_ZA
dc.publisherWiley
dc.subjectBirdsen_ZA
dc.subjectAlien birdsen_ZA
dc.subjectIntroduced organisms -- Effect of habitat modification onen_ZA
dc.subjectIntroduced birds -- Effect of predation onen_ZA
dc.subjectBiological invasionsen_ZA
dc.titleIdentifying the factors that determine the severity and type of alien bird impactsen_ZA
dc.typeArticleen_ZA
dc.description.versionPublisher's version
dc.rights.holderAuthors retain copyright


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