Predicting the stability of multitrophic communities in a variable world
Predicting the stability of multitrophic communities in a variable world
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预测多营养群落在变化的世界中的稳定性
DOI：
10.1002/ecy.2992
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发表时间：
2020
期刊：
影响因子：
4.8
通讯作者：
Hughes, A. Randall
中科院分区：
文献类型：
--
作者：
Yeager, Mallarie E.;Gouhier, Tarik C.;Hughes, A. Randall
确定破坏社区稳定的因素对于预测和减轻环境变化的生态影响至关重要。虽然理论表明，当地生态系统的规模和区域分布可以决定生物多样性，但对这些因素对群落稳定性的直接和间接影响知之甚少。在这里，我们发现沿海池塘中无脊椎动物和鱼类的多营养群落的不稳定性与当地池塘的大小呈负相关，而与代表扩散限制的海洋距离呈正相关。重要的是，池塘大小和距离对不稳定的影响是由物种丰富度直接而不是间接中介的。这表明多样性-稳定性关系是一种附生现象，其分辨率既不是理解这些多营养群落稳定性所必需的，也不是充分的。取而代之的是，历史上与物种丰富度相关的成熟和容易测量的当地和区域因素可以用来预测多变世界中多营养群落的稳定性。
Identifying the factors that destabilize communities is critical for predicting and mitigating the ecological impacts of environmental change. Although theory has shown that local ecosystem size and regional dispersal can determine biodiversity, less is known about the direct and indirect effects of these factors on community stability. Here we show that multitrophic community instability of invertebrates and fishes in coastal ponds is negatively related to local pond size and positively related to distance to the ocean, a proxy for dispersal limitation. Importantly, the effects of pond size and distance on instability were direct rather than indirectly mediated by species richness. This suggests that the diversity–stability relationship is an epiphenomenon whose resolution is neither necessary nor sufficient to understand the stability of these multitrophic communities. Instead, well‐established and easily measured local and regional factors historically linked to species richness can be used to predict multitrophic community stability in a variable world.