Plant Acquisitive Strategies Promote Resistance and Temporal Stability of Semiarid Grasslands

IF 7.6 1区环境科学与生态学 Q1 ECOLOGY

Ecology Letters Pub Date : 2025-04-03 DOI:10.1111/ele.70110

Pu Yan, Nianpeng He, Marcos Fernández-Martínez, Xian Yang, Yiping Zuo, Hao Zhang, Jing Wang, Shiping Chen, Jian Song, Guoyong Li, Enrique Valencia, Shiqiang Wan, Lin Jiang

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Abstract

Among ecologists, it is widely believed that conservative growth strategies of plants are crucial for sustaining ecosystem stability, while the potential stabilising role of acquisitive strategies has received little attention. We investigated the relationships between plant traits and three stability dimensions—temporal stability, resistance and resilience—using two complementary datasets from drought-affected semi-arid grasslands: a temporal plant community survey from a single site and a 1000-km transect survey with satellite-derived productivity estimates. We found strikingly consistent patterns from the two datasets, with grasslands dominated by acquisitive strategies exhibiting greater resistance and temporal stability of productivity. Acquisitive strategies enhance stability by facilitating drought escape and avoidance, rather than drought tolerance typically associated with conservative strategies. These results highlight the important but underappreciated role of acquisitive strategies in enhancing ecosystem resistance to disturbances and maintaining temporal stability in semi-arid grasslands.

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生态学家普遍认为，植物的保守生长策略是维持生态系统稳定的关键，而获取策略的潜在稳定作用却很少受到关注。我们利用来自受干旱影响的半干旱草原的两个互补数据集：一个来自单一地点的时间植物群落调查和一个1000公里横断面调查与卫星衍生生产力估计，研究了植物性状与三个稳定性维度--时间稳定性、抵抗力和恢复力--之间的关系。我们从这两个数据集中发现了惊人一致的模式，即以获取策略为主的草原表现出更强的抵抗力和生产力的时间稳定性。获得性策略通过促进干旱逃逸和避免干旱来增强稳定性，而不是通常与保守策略相关的耐旱性。这些结果突显了获取策略在增强生态系统抗干扰能力和维持半干旱草原时间稳定性方面的重要作用，但这一作用未得到充分重视。

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来源期刊

Ecology Letters 环境科学-生态学

CiteScore

17.60

自引率

3.40%

发文量

201

审稿时长

1.8 months

期刊介绍： Ecology Letters serves as a platform for the rapid publication of innovative research in ecology. It considers manuscripts across all taxa, biomes, and geographic regions, prioritizing papers that investigate clearly stated hypotheses. The journal publishes concise papers of high originality and general interest, contributing to new developments in ecology. Purely descriptive papers and those that only confirm or extend previous results are discouraged.