全球一半的岛屿已经达到临界面临生物入侵迅速增加的临界面临临临界面
Yanxia Li1,2, Yanping Wang2, Xuan Liu1,3
1Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, 1 Beichen West Road, Chaoyang , Beijing 100101, People's Republic of China.
Proceedings. Biological sciences
|June 18, 2024
概括
生物入侵威胁着生物多样性,特别是在岛屿上. 研究人员发现,超过一半的研究岛屿可能正在接近迅速增加非本土物种的临界点,需要早期预防.
科学领域:
- 生态生态学 生态生态学
- 保护生物学 保护生物学
- 岛屿生物地理 岛屿生物地理
背景情况:
- 生物入侵对全球生物多样性和社会可持续性构成重大威胁,特别是在岛屿上.
- 早期发现非本地物种增加对于有效的预防策略至关重要.
- 小岛效应 (SIE) 量化了本地物种与地区的关系,但尚未用于预测非本地物种入侵断点.
研究的目的:
- 将小岛效应 (SIE) 框架应用于非本地物种数据.
- 确定岛屿上已建立的非原生物种迅速增加的关键区域值.
- 调查影响生物入侵中SIE发生的因素.
主要方法:
- 利用了广泛的全球数据集,包括非本土鸟类,哺乳动物,两动物和爬行动物.
- 分析了54个群岛内的4277个岛屿的769种非本土物种的数据.
- 应用统计方法来检测SIE并确定影响因素.
主要成果:
- 小岛效应 (SIEs) 在66.7%的研究群岛中普遍存在.
- 大约50%的岛屿已经达到值区域,这表明迅速入侵的可能性.
- 特殊的自然现象与更高的引入事件,更成熟的历史性非本土物种,更低的息地多样性和更大的群岛面积范围有关.
结论:
- SIE框架适用于预测岛上非本地物种入侵动态.
- 许多岛屿面临着快速生物入侵的风险,这凸显了有针对性的监视的必要性.
- 这些发现有助于预测物种对息地碎片化和气候变化的反应.
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