Comparing determinants of alien bird impacts across two continents: implications for risk assessment and management
Article first published online: 22 JUN 2014
© 2014 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.
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Ecology and Evolution
Volume 4, Issue 14, pages 2957–2967, July 2014
How to Cite
Ecology and Evolution 2014; 4(14):2957–2967
- Issue published online: 21 JUL 2014
- Article first published online: 22 JUN 2014
- Manuscript Accepted: 25 MAY 2014
- Manuscript Revised: 19 MAY 2014
- Manuscript Received: 25 MAR 2014
- Global Invasions Research Coordination Network
- Swiss National Science Foundation
- Drakenstein Trust
- DST-NRF Centre of Excellence for Invasion Biology
- Alien birds;
- biological invasion;
- habitat generalism;
- impact prediction;
- life history traits;
- risk assessment
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.