Blackburn, T;
Cassey, P;
Lockwood, J;
Duncan, R;
(2020)
The relationship between propagule pressure and establishment success in alien bird populations: a re-analysis of Moulton & Cropper (2019).
PeerJ
, 8
, Article e8766. 10.7717/peerj.8766.
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Abstract
A recent analysis by Moulton & Cropper (2019) of a global dataset on alien bird population introductions claims to find no evidence that establishment success is a function of the size of the founding population. Here, we re-analyse Moulton & Cropper’s data and show that this conclusion is based on flawed statistical methods—their data in fact confirm a strong positive relationship between founding population size and establishment success. We also refute several non-statistical arguments against the likelihood of such an effect presented by Moulton & Cropper. We conclude that a core tenet of population biology—that small populations are more prone to extinction—applies to alien populations beyond their native geographic range limits as much as to native populations within them.
| Type: | Article |
|---|---|
| Title: | The relationship between propagule pressure and establishment success in alien bird populations: a re-analysis of Moulton & Cropper (2019) |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.7717/peerj.8766 |
| Publisher version: | https://doi.org/10.7717/peerj.8766 |
| Language: | English |
| Additional information: | © 2020 Blackburn et al. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Genetics, Evolution and Environment |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10092173 |
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