在大陆尺度上普遍的物种区域和特有物种区域关系
David Storch1, Petr Keil, Walter Jetz
1Center for Theoretical Study, Charles University, Praha, Czech Republic. storch@cts.cuni.cz
Nature
|June 23, 2012
概括
物种与区域关系 (SAR) 和特有区域关系 (EAR) 显示了跨大陆和种类的普遍模式. 通过平均范围大小重新调整面积,可以发现一致的物种丰富模式,有助于生物多样性预测.
科学领域:
- 生态生态学 生态生态学
- 生物多样性科学 生物多样性科学
- 生物地理学是生物地理学.
背景情况:
- 物种-区域关系 (SAR) 和特有区域关系 (EAR) 在生态学中是基本的,但它们在种类和区域的普遍性仍在争论中.
- 传统的力量法近似SAR可能无法捕捉在不同的空间尺度上观察到的复杂模式.
研究的目的:
- 研究跨主要种类和全球陆地群体的物种区域和特有区域关系的普遍性和普遍性.
- 测试三相SARs最近的理论预测,并确定统一管理生物多样性模式的统一原则.
主要方法:
- 分析了两动物,鸟类和哺乳动物在各大洲的物种丰富性和特有性数据.
- 使用平均范围大小来标准化SAR和EAR的空间面积的应用调整.
- 将经验模式与来自随机范围放置模拟模型的预测进行比较.
主要成果:
- 在研究的种类和区域中发现了普遍上升加速的SARs,偏离了简单的功率定律.
- 证明了不同种类和大陆的重新缩放的SAR会崩成一个单一的通用功能.
- 发现EARs与接近1的斜率的功率定律相近,这表明与面积减少相对应的物种丧失.
结论:
- 这项研究揭示了物种丰富性和特有性在不同种类和地理区域的普遍缩放规律.
- 重缩SAR和EAR提供了一个强大的工具,用于估计生物多样性和灭绝率,使用平均范围大小和区域物种丰富度.
- 这些发现支持了基于随机放置物种范围的模拟模型,为观察到的生物多样性模式提供了机制性的解释.
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