响应特征多样性和物种异步性是罗马尼亚鸟类群落多样性-稳定性关系的基础
Hannah J White1, Joseph J Bailey1,2, Ciortan Bogdan2,3
1School of Life Sciences, Anglia Ruskin University, Cambridge, UK.
The Journal of animal ecology
|October 20, 2023
概括
更高的响应特征多样性通过促进组成和功能变异性来增强鸟类社区的稳定性. 这种关系受到土地覆盖的影响,这对于理解生物多样性和生态系统在环境变化下运作至关重要.
科学领域:
- 生态生态学 生态生态学
- 社区生态学社区生态学
- 基于特征的生态学
背景情况:
- 生物多样性-稳定性关系是生态学的核心,特征越来越多地用于解释社区稳定性.
- 经典理论认为,物种的多样化反应通过补偿动态来稳定社区.
- 功能反应特征在生态稳定性研究中未得到充分利用,尽管它们具有机械作用.
研究的目的:
- 通过基于特征的方法,研究鸟类群落的多样性-稳定性关系.
- 探索响应特征多样性如何影响社区稳定性 (组成和功能变化).
- 确定功能变异性是否影响生态系统运作的时间稳定性 (影响特征多样性).
主要方法:
- 来自罗马尼亚中部98个地点的年度鸟类调查数据的分析.
- 整合全球特征数据库以量化功能响应和效应特征.
- 结构方程模型的应用,以阐明多样性,稳定性和特征之间的关系.
主要成果:
- 增加的响应特征多样性直接增强了组成的变异性,并通过物种异步间接增强了功能变异性.
- 功能变异性显著影响效应特征多样性的时间稳定性,这是生态系统运作的代理.
- 社区稳定性指标和多样性-稳定性关系在自然森林和人类主导的景观之间有所不同,土地覆盖介导了响应多样性-功能变异性联系.
结论:
- 响应特征的多样性是社区稳定的关键驱动力,影响了社区的组成和功能.
- 生态系统运作的稳定性与功能变异性有关,突出显示了特征动态的重要性.
- 整合响应和影响特征框架对于理解生物多样性变化和为全球环境变化中稳定生态系统运作提供保护信息至关重要.
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