Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/104302
Citations
Scopus Web of Science® Altmetric
?
?
Type: Journal article
Title: A global analysis of the determinants of alien geographical range size in birds
Author: Dyer, E.
Franks, V.
Cassey, P.
Collen, B.
Cope, R.
Jones, K.
Şekercioğlu, Ç.
Blackburn, T.
Citation: Global Ecology and Biogeography, 2016; 25(11):1346-1355
Publisher: Wiley
Issue Date: 2016
ISSN: 1466-822X
1466-8238
Statement of
Responsibility: 
Ellie E. Dyer, Victoria Franks, Phillip Cassey, Ben Collen, Robert C. Cope, Kate E. Jones, Ҫagan H. Ṣekercioğlu and Tim M. Blackburn
Abstract: Aim: Determining the causes of range size variation in the distributions of alien species is important for understanding the spread of invasive species. Factors influencing alien range size have been explored for some species at a regional level, but to date there has been no global analysis of an entire class. Here, we present such an analysis for birds, testing for the effects of introduction event, location and species-level variables on alien range sizes. Location Global. Methods: We used a novel dataset on the global distributions of alien bird species to test for relationships between alien range size and colonization pressure, residence time, extent of the global climatic niche, native range size, body mass and specialization, using a statistical approach based on phylogenetic generalized least squares models. We performed this analysis globally, and for separate biogeographical realms. Results: Approximately half of the variation in alien bird range size is explained by colonization pressure in univariate analysis. We identified consistent effects of higher colonization pressure at global and realm levels, as well as support for effects of native range size and residence time. We found less support for effects of body mass, specialization or extent of the global climatic niche on alien range size. Main conclusions: Alien bird range sizes are generally small relative to their native range sizes, and many are continuing to expand. Nevertheless, current variation is predictable, most strongly by the event-level factor of colonization pressure. Whether a species is widespread is a better predictor of alien range size than whether a species could be widespread (estimated by global climatic niche extent), while we also find effects of residence time on alien range size. These relationships may help to identify those alien species that are more likely to spread and hence have greater environmental and economic impacts where they have been introduced.
Keywords: Alien; avian ecology; bird, body mass; geographical range size; global climatic niche extent; number of introductions; residence time; specialisation
Rights: © 2016 John Wiley & Sons Ltd
RMID: 0030057392
DOI: 10.1111/geb.12496
Grant ID: http://purl.org/au-research/grants/arc/FT0991420
http://purl.org/au-research/grants/arc/DP120101019
Appears in Collections:Earth and Environmental Sciences publications

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.