Causes of exotic bird establishment across oceanic islands

Research output: Contribution to journalArticle

Authors

Colleges, School and Institutes

Abstract

The probability that exotic species will successfully establish viable populations varies between regions, for reasons that are currently unknown. Here, we use data for exotic bird introductions to 41 oceanic islands and archipelagos around the globe to test five hypotheses for this variation: the effects of introduction effort, competition, predation, human disturbance and habitat diversity (island biogeography). Our analyses demonstrate the primary importance of introduction effort for avian establishment success across regions, in concordance with previous analyses within regions. However, they also reveal a strong negative interaction across regions between establishment success and predation; exotic birds are more likely to fail on islands with species-rich mammalian predator assemblages.

Details

Original languageEnglish
Pages (from-to)2059-63
Number of pages5
JournalRoyal Society of London. Proceedings B. Biological Sciences
Volume272
Issue number1576
Publication statusPublished - 7 Oct 2005

Keywords

  • islands, invasions, introduction effort, birds, mammal predators