跨生物群体和生态系统类型的多样性-稳定性关系在空间尺度上脱
Nathan I Wisnoski1,2,3, Riley Andrade4,5, Max C N Castorani6
1Department of Biological Sciences, Mississippi State University, Mississippi State, Mississippi, USA.
Ecology
|July 4, 2023
概括
高的物种多样性稳定了当地生态系统,但并不能保证区域的稳定. 区域稳定需要空间多样性 (β-多样性) 来减少跨景观的人口波动,特别是对于聚合生态系统属性.
科学领域:
- 生态生态学 生态生态学
- 生物多样性研究 生物多样性研究
- 生态系统稳定性 生态系统稳定性
背景情况:
- 多样性-稳定性关系 (DSR) 假设更高的生物多样性导致更大的生态系统稳定性.
- 以前的研究主要集中在聚合物特性上,可能缺少破坏稳定的组成变化.
- 多样性,可变性和空间尺度之间的相互作用在不同的种类中仍然不完全理解.
研究的目的:
- 研究生物多样性如何与地方和区域范围内的总和组成变异性有关.
- 为了确定区域多样性-稳定性关系 (DSRs) 是否在各种生物和生态系统中一致.
- 分析 γ-多样性,β-多样性和空间同步在元社区稳定的作用.
主要方法:
- 编制了来自不同分类群体和生态系统的广泛的长期元社区数据.
- 应用了一种新的定量框架,同时在空间尺度上分析总和组成变化.
- 在地方和超级社区层面,对组成和总体变异性的量化DSR.
主要成果:
- 更多样化的当地社区表现出较低的变化,对聚合物比组合性质的影响更大.
- 区域多样性 (γ-多样性) 并没有始终稳定元社区的变化.
- 空间多样性 (β-多样性) 显著降低了空间同步,从而降低了区域变异性.
结论:
- 当地的生物多样性增强了稳定性,但这种效应并不自动扩展到区域范围.
- 区域稳定取决于空间过程,特别是β-多样性在缓解空间同步中的作用.
- 集成性质的有效区域稳定需要足够的β-多样性来分离当地种群.
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