生物多样性在不断变化的环境中调节跨社区的缩放关系
Vojsava Gjoni1,2, Florian Altermatt1,3, Aurélie Garnier1,4
1Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland.
Ecology letters
|September 14, 2025
概括
生物的丰富性通常会随着身体大小而减少,但这种关系不是固定的. 温度和物种丰富度等环境因素会动态地改变大小-丰富度的缩放,尤其是在时间的推移.
科学领域:
- 生态生态学 生态生态学
- 理论生态学理论生态学
- 微生物学 微生物学
背景情况:
- 生物的丰富性通常随着身体大小的增加而下降.
- 代谢理论预测普遍的大小-丰度斜率为-0.75,将身体大小与能源使用和生产力联系起来.
- 这种关系在各种环境中的不变性在很大程度上仍未得到测试.
研究的目的:
- 在不同的生态条件下,实证地研究大小丰富关系的稳定性.
- 测试温度和原生动物物种丰富程度如何共同影响跨社区大小缩放关系 (CCSR).
- 要确定大小与丰度的关系是不变的还是上下文依赖的.
主要方法:
- 利用复制的原生微观宇宙来模拟不同的生态场景.
- 操纵物种丰富性 (1-6个物种) 和温度 (15°C-25°C),以评估它们对大小丰富度扩大的影响.
- 随着时间的推移,监测有机体数量和体型的变化.
主要成果:
- 证实了整个社区的一般大小-丰富度斜率为-0.75.
- 证明大小与丰富的关系不是不变的,显示温度和物种丰富之间的显著交互效应.
- 观察到变暖有利于高富裕社区中较小的原生体,导致更的CCSR斜率.
结论:
- 跨社区尺寸缩放关系 (CCSR) 是由生态环境,包括温度和生物多样性,动态塑造的.
- 环境变化,特别是气候变暖,可以以财富依赖的方式改变规模-丰富度缩放.
- 取决于大小的物种相互作用可能在调解对随着时间的推移对环境变化的反应中起着至关重要的作用.
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