期刊
CONSERVATION BIOLOGY
卷 35, 期 4, 页码 1268-1277出版社
WILEY
DOI: 10.1111/cobi.13697
关键词
biological invasion; Common Myna; extinction; raptor; seabird; shorebird
资金
- Alexander von Humboldt Foundation
Non-native bird predation poses a severe threat to endangered and threatened bird species conservation on small islands, with almost all impacts recorded on islands smaller than 500 km(2). The lack of a global review limits our understanding of the number and types of species affected by non-native bird predation. Eradication of non-native bird species from small islands could significantly reduce nest predation impacts on near-threatened and threatened bird species.
Although invasive non-native species can adversely affect biodiversity in many ways, predation of native species by non-native species on islands can be severely damaging. Results of numerous studies document non-native birds preying on birds on islands, but our understanding of the number and type of species affected has been limited by the lack of a global review of these impacts. I identified the non-native bird species that have been recorded preying on birds, the locations where this predation occurred, and the bird species affected. Because the impacts of non-native birds can be particularly severe on small islands, I then identified the islands <500 km(2) around the world that are occupied by predatory non-native birds. By taking into account their life-history traits and predation history, I also identified the near-threatened and threatened bird species on these islands that they may prey on. The results indicated that predation by non-native birds was primarily a concern for threatened bird conservation on small islands; almost all predation impacts (91%) on near-threatened and threatened birds were recorded on islands, and median island size was 106 km(2). I also found non-native bird predation was a poorly known and widespread potential threat to avian biodiversity; worldwide, 194 islands of <500 km(2) were occupied by predatory non-native birds, but information on their impacts was unavailable for most of these islands. On them, where the impacts of non-native species can be severe, non-native birds may be preying on approximately 6% of the world's near-threatened and threatened bird species. Four non-native bird species I identified have been successfully eradicated from islands. If they were eradicated from the small islands they occupy, 70% of the near-threatened and threatened bird species I identified would no longer be affected by nest predation by non-native birds on small islands.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据