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Comparing determinants of alien bird impacts across two continents: implications for risk assessment and management.

Authors
Type
Published Article
Journal
Ecology and Evolution
2045-7758
Publisher
Wiley Blackwell (John Wiley & Sons)
Publication Date
Volume
4
Issue
14
Pages
2957–2967
Identifiers
DOI: 10.1002/ece3.1144
PMID: 25165531
Source
Medline
Keywords
License
Unknown

Abstract

Invasive alien species can have serious adverse impacts on both the environment and the economy. Being able to predict the impacts of an alien species could assist in preventing or reducing these impacts. This study aimed to establish whether there are any life history traits consistently correlated with the impacts of alien birds across two continents, Europe and Australia, as a first step toward identifying life history traits that may have the potential to be adopted as predictors of alien bird impacts. A recently established impact scoring system was used in combination with a literature review to allocate impact scores to alien bird species with self-sustaining populations in Australia. These scores were then tested for correlation with a series of life history traits. The results were compared to data from a previous study in Europe, undertaken using the same methodology, in order to establish whether there are any life history traits consistently correlated with impact across both continents. Habitat generalism was the only life history trait found to be consistently correlated with impact in both Europe and Australia. This trait shows promise as a potential predictor of alien bird impacts. The results support the findings of previous studies in this field, and could be used to inform decisions regarding the prevention and management of future invasions.

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