Tools
ToolsSilva, Tiago, Reino, Luís M. and Borralho, Rui (2002) A model for range expansion of an introduced species:The common waxbill Estrilda astrild in Portugal. Diversity and Distributions, 8 (6). pp. 319-326. ISSN 1366-9516
Full text not available from this repository. (Request a copy)Abstract
The common waxbill Estrilda astrild was first introduced to Portugal from Africa in 1964, and has spread across much of the country and into Spain. We modelled the expansion of the common waxbill on a 20 x 20 km UTM grid in 4-year periods from 1964 to 1999. The time variation of the square root of the occupied area shows that this expansion process is stabilizing in Portugal, and reasons for this are discussed. Several methods used to model biological expansions are not appropriate for the present case, because little quantitative data are available on the species ecology and because this expansion has been spatially heterogeneous. Instead, colonization on a grid was modelled as a function of several biophysical and spatio-temporal variables through the fitting of a multivariate autologistic equation. This approach allows examination of the underlying factors affecting the colonization process. In the case of the common waxbill it was associated positively with its occurrence in adjacent cells, and affected negatively by altitude and higher levels of solar radiation.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | biological invasions,birds,invasive alien species,logistic regression,ecology, evolution, behavior and systematics ,/dk/atira/pure/subjectarea/asjc/1100/1105 |
| Faculty \ School: | Faculty of Science > School of Environmental Sciences |
| UEA Research Groups: | Faculty of Science > Research Groups > Collaborative Centre for Sustainable Use of the Seas |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 16 Feb 2026 14:31 |
| Last Modified: | 16 Feb 2026 14:31 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/101952 |
| DOI: | 10.1046/j.1472-4642.2002.00156.x |
Actions (login required)
 |
View Item |