Punctuated ecological equilibrium in mammal communities over evolutionary time scales
Punctuated ecological equilibrium in mammal communities over evolutionary time scales
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DOI：
10.1126/science.abd5110
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发表时间：
2021-04-16
期刊：
影响因子：
56.9
通讯作者：
Cantalapiedra, Juan L.
中科院分区：
文献类型：
--
作者：
Blanco, Fernando;Calatayud, Joaquin;Cantalapiedra, Juan L.
对深时生态动力学的研究能够通过预测未来数百万年生态系统的行为来为保护决策提供信息。使用网络分析和一个特殊的化石数据集跨越过去2100万年，我们表明，哺乳动物生态组合经历了长期的功能停滞，尽管高分类的波动性，由于分散，物种形成和灭绝。较高的功能丰富度和多样性促进了功能动物群的持续存在，尽管这些不同的动物群之间物种灭绝的风险是难以区分的。这些研究结果，以及功能和分类演替之间的巨大不匹配，表明虽然保护功能多样性可能会或可能不会最大限度地减少物种损失，但它肯定会增强生态系统功能在未来干扰面前的持久性。
The study of deep-time ecological dynamics has the ability to inform conservation decisions by anticipating the behavior of ecosystems millions of years into the future. Using network analysis and an exceptional fossil dataset spanning the past 21 million years, we show that mammalian ecological assemblages undergo long periods of functional stasis, notwithstanding high taxonomic volatility due to dispersal, speciation, and extinction. Higher functional richness and diversity promoted the persistence of functional faunas despite species extinction risk being indistinguishable among these different faunas. These findings, and the large mismatch between functional and taxonomic successions, indicate that although safeguarding functional diversity may or may not minimize species losses, it would certainly enhance the persistence of ecosystem functioning in the face of future disturbances.