Functional trait trade-offs define plant population stability across different biomes
Functional trait trade-offs define plant population stability across different biomes
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功能性状的权衡决定了不同生物群落中植物种群的稳定性
DOI：
10.1098/rspb.2023.0344
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发表时间：
2023
期刊：
影响因子：
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通讯作者：
Dengler, Jürgen
中科院分区：
文献类型：
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作者：
Conti, Luisa;Valencia, Enrique;Galland, Thomas;Götzenberger, Lars;Lepš, Jan;E-Vojtkó, Anna;Carmona, Carlos P.;Májeková, Maria;Danihelka, Jiří;Dengler, Jürgen
生态学理论认为，植物种群的时间稳定性模式与物种生态策略的差异有关。然而，缺乏经验证据表明哪些特征或权衡是物种稳定性的基础，特别是在不同的生物群落中。我们从大范围的栖息地中收集了全球范围内的长期永久植被记录（来自78个数据集的7000多个地块），并将其与现有的性状数据库相结合。我们测试了所观察到的物种丰度的年际变化（变异系数）是否与多个个体性状有关。我们发现，随着时间的推移，更大的叶片干物质含量和种子质量的人口更稳定。尽管这些特征解释的变异性很低，但它们的影响在不同的数据集上是一致的。其他性状在物种稳定性方面发挥了重要作用，尽管作用较弱，但多变量轴或单变量发生的纳入并没有实质性地修改或改善预测。这些结果提供了经验证据，并突出了特定的生态权衡的相关性，即在不同的资源利用和扩散策略，在多个生物群落的植物种群稳定性。然而，进一步的研究是必要的，以整合和评估其他特定性状的作用，往往无法在数据库中，种内性状的变异性在调节物种的稳定性。
Ecological theory posits that temporal stability patterns in plant populations are associated with differences in species' ecological strategies. However, empirical evidence is lacking about which traits, or trade-offs, underlie species stability, especially across different biomes. We compiled a worldwide collection of long-term permanent vegetation records (greater than 7000 plots from 78 datasets) from a large range of habitats which we combined with existing trait databases. We tested whether the observed inter-annual variability in species abundance (coefficient of variation) was related to multiple individual traits. We found that populations with greater leaf dry matter content and seed mass were more stable over time. Despite the variability explained by these traits being low, their effect was consistent across different datasets. Other traits played a significant, albeit weaker, role in species stability, and the inclusion of multi-variate axes or phylogeny did not substantially modify nor improve predictions. These results provide empirical evidence and highlight the relevance of specific ecological trade-offs, i.e. in different resource-use and dispersal strategies, for plant populations stability across multiple biomes. Further research is, however, necessary to integrate and evaluate the role of other specific traits, often not available in databases, and intraspecific trait variability in modulating species stability.