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Profiling insular vertebrates prone to biological invasions: What makes them vulnerable?
Global Change Biology ( IF 10.8 ) Pub Date : 2021-11-15 , DOI: 10.1111/gcb.15941
Clara Marino 1 , Camille Leclerc 1 , Céline Bellard 1
Affiliation  

Invasive alien species (IAS) are a major threat to insular vertebrates, although the ecological characteristics that make insular communities vulnerable to IAS are poorly understood. After describing the ecological strategies of 6015 insular amphibians, birds, lizards, and mammals, we assessed the functional and ecological features of vertebrates exposed to IAS. We found that at least 50% of insular amphibian functional richness was hosted by IAS-threatened amphibians and up to 29% for birds. Moreover, all IAS-threatened groups except birds harbored a higher functional richness than species groups threatened by other threats. Disentangling the ecological strategies threatened by IAS, compared to those associated with other threats, we showed that birds, lizards, and mammals were more likely to be terrestrial foragers and amphibians to have larval development. By contrast, large-bodied species and habitat specialists were universally threatened. By considering the functional aspect of threatened insular diversity, our work improves our understanding of global IAS impacts. This new dimension proves essential for undertaking relevant and effective conservation actions.

中文翻译:

分析易受生物入侵的岛状脊椎动物:是什么让它们变得脆弱?

外来入侵物种 (IAS) 是对岛屿脊椎动物的主要威胁,尽管对使岛屿群落易受 IAS 影响的生态特征知之甚少。在描述了 6015 种岛屿两栖动物、鸟类、蜥蜴和哺乳动物的生态策略后,我们评估了暴露于 IAS 的脊椎动物的功能和生态特征。我们发现,至少 50% 的岛屿两栖动物功能丰富性由受 IAS 威胁的两栖动物提供,而鸟类则高达 29%。此外,除鸟类外,所有受 IAS 威胁的群体都比受其他威胁威胁的物种群体具有更高的功能丰富度。解开 IAS 威胁的生态策略,与其他威胁相关的策略相比,我们发现鸟类、蜥蜴、哺乳动物更有可能是陆生觅食者和两栖动物,以发育幼虫。相比之下,大型物种和栖息地专家普遍受到威胁。通过考虑受威胁的岛屿多样性的功能方面,我们的工作提高了我们对全球 IAS 影响的理解。事实证明,这一新维度对于开展相关和有效的保护行动至关重要。
更新日期:2022-01-05
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