预测马达加斯加的已知和未知的爬行动物种的分布
Christopher J Raxworthy1, Enrique Martinez-Meyer, Ned Horning
1American Museum of Natural History, Central Park West at 79th Street, New York, New York 10024-5192, USA. rax@amnh.org
Nature
|December 20, 2003
概括
生态利基模型准确地预测了热带生物多样性热点中的物种分布. 使用现代数据提高了准确性,并有助于发现新的物种和息地.
科学领域:
- 生物多样性研究的研究.
- 保护生物学 保护生物学
- 地理信息系统是地理信息系统.
背景情况:
- 热带生物多样性至关重要,但缺乏足够的物种分布数据来进行保护和生物地理研究.
- 现有的数据,包括历史博物馆记录和卫星数据,都有局限性,特别是在动态的热带环境中.
研究的目的:
- 评估生态利基模型在利用现代环境数据和发生记录预测物种分布方面的有效性.
- 探索最近与历史地区数据的实用性,以改善分布模型.
- 确定在人们对热带景观了解甚少的地区发现新物种的潜在区域.
主要方法:
- 使用29个现代环境土地覆盖数据集开发了生态利基模型.
- 利用了来自马达加斯加的621个黑发生地 (历史和近期).
- 模型预测成功被评估在11个最近被清单的网站,比较基于不同数据子集的模型.
主要成果:
- 仅基于现代事件数据的模型取得了最高的预测成功 (85.1%).
- 使用1978年之前的数据和所有数据结合的模型显示出显著的预测成功 (分别为74.7%和82.8%).
- 确定过度预测的领域导致发现了七种新的黑物种.
结论:
- 用最近的地区记录和环境数据进行生态利基建模,为鲜为人知的热带地区提供了宝贵的生物地理洞察力.
- 这种方法为发现未知的分布区域和物种提供了创新潜力.
- 现代数据驱动的建模对于快速变化的热带景观中有效的保护规划至关重要.
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