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跳和宿主组合以及它们在空间距离梯度上的相互作用网络的不相似性:不同的网络不相似度量显示出不同的模式
Boris R Krasnov1, Goni Barki2, Irina S Khokhlova3
1Mitrani Department of Desert Ecology, Swiss Institute for Dryland Environmental and Energy Research, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, 84990, Midreshet Ben-Gurion, Israel. krasnov@bgu.ac.il.
Oecologia
|June 6, 2024
概括
研究表明,虽然跳和宿主物种的组成随着距离的变化而变化,但它们的相互作用网络的结构显示出不同的距离衰变模式. 了解物种身份和网络结构是预测生态差异的关键.
科学领域:
- 生态生态学 生态生态学
- 生物地理学是生物地理学.
- 网络分析 网络分析
背景情况:
- 生态社区在物种组成和相互作用中表现出空间模式.
- 距离-衰变模式,相似性随着地理隔离而减少,这是一个基本的生态概念.
- 了解这种模式如何适用于宿主-寄生虫相互作用网络对于生态理论至关重要.
研究的目的:
- 调查跳及其小型哺乳动物宿主区域组合中的距离衰变模式.
- 评估跳和宿主相互作用网络中的距离衰变模式.
- 根据网络不相似度指标和生物地理领域来确定距离衰变模式是否不同.
主要方法:
- 分区组合不相似性 (β总) 分为物种丰富性 (βrich) 和替代性 (βrepl) 组件.
- 使用物种替代 (βST) 和相互作用重新连接 (βOS) 的指标评估网络不相似性 (βWN).
- 使用D统计 (Dh,Df) 来测量纯网络结构不相似性,独立于物种身份.
主要成果:
- 组合不相似性 (β总,βrepl) 在大多数领域的距离增加;βrich仅在近北极地区显示距离衰变.
- 网络不相似性 (βWN,βST) 呈现出距离衰变模式,而交互重新布线 (βOS) 在很大程度上是空间不变的.
- 纯网络结构 (Dh,Df) 的不相似性与地理距离没有显著的相关性.
结论:
- 距离衰变模式在宿主-寄生虫组合和它们的相互作用网络中都很明显,但随着使用的度量而有所不同.
- 网络结构的不相似性并不总是仅仅通过地理距离可以预测的.
- 综合分析需要采用物种身份依赖和结构依赖的网络不相似度指标.
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