文章来源：IanA. Hatton, OnofrioMazzarisi,AdaAltieri, MatteoSmerlak. (2024). Diversity begets stability: Sublinear growth and competitive coexistence across ecosystems. Science: 383, eadg8488. https://doi/10.1126/science.adg8488.

整理人：徐嘉苗，2021级本科生

整理时间：2024年5月22日

Abstract: The worldwide loss of species diversity brings urgency to understanding how diverse ecosystems maintain stability. Whereas early ecological ideas and classic observations suggested that stability increases with diversity, ecological theory makes the opposite prediction, leading to the long-standing “diversity-stability debate.” Here, we show that this puzzle can be resolved if growth scales as a sublinear power law with biomass (exponent <1), exhibiting a form of population self-regulation analogous to models of individual ontogeny. We show that competitive interactions among populations with sublinear growth do not lead to exclusion, as occurs with logistic growth, but instead promote stability at higher diversity. Our model realigns theory with classic observations and predicts large-scale macroecological patterns. However, it makes an unsettling prediction: Biodiversity loss may accelerate the destabilization of ecosystems.

摘要：世界范围内物种多样性的丧失使我们迫切需要了解不同的生态系统是如何保持稳定的。早期的生态学思想和经典观察表明，稳定性随着多样性的增加而增加，而生态学理论做出了相反的预测，导致了长期的“多样性-稳定性之争”。在这里，我们表明，如果种群增长随着密度提高到小于 1 的幂而亚线性增加，表现出类似于个体发生模型的群体自我调节形式，则可以解决这个难题。研究表明，亚线性增长的种群之间的竞争相互作用不会像逻辑斯蒂增长那样导致排斥，反而会促进更高多样性下的稳定性。我们的模型将理论与经典观测结合起来，并预测了大规模的宏观生态模式。然而，它做出了一个令人不安的预测:生物多样性的丧失可能会加速生态系统的不稳定。

图 逻辑增长和亚线性增长的多样性-稳定性关系对比

图 各生态系统生物量的亚线性增长比例

图 模拟生产-生物量关系

原文链接：https://www.science.org/doi/10.1126/science.adg8488 

节选转引：https://mp.weixin.qq.com/s/TmKTjxnD-3g2uzTv94lhHw