Pavanetto Nicola, Niinemets Ülo, Rueda Marta, Puglielli Giacomo
Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Tartu, Estonia.
Estonian Academy of Sciences, Tallinn, Estonia.
Ecol Lett. 2024 Nov;27(11):e70016. doi: 10.1111/ele.70016.
Understanding the main ecological constraints on plants' adaptive strategies to tolerate multiple abiotic stresses is a central topic in plant ecology. We aimed to uncover such constraints by analysing how the interactions between climate, soil features and species functional traits co-determine the distribution and diversity of stress tolerance strategies to drought, shade, cold and waterlogging in woody plants of the Northern Hemisphere. Functional traits and soil fertility predominantly determined drought and waterlogging/cold tolerance strategies, while climatic factors strongly influenced shade tolerance. We describe the observed patterns by defining 'stress tolerance biomes' and 'polytolerance hotspots', that is, geographic regions where woody plant assemblages have converged to specific tolerance strategies and where the coexistence of multiple tolerance strategies is frequent. The depiction of these regions provides the first macroecological overview of the main environmental and functional requirements underlying the ecological limits to the diversity of abiotic stress tolerance strategies in woody plants.
了解植物耐受多种非生物胁迫的适应性策略的主要生态限制因素是植物生态学的核心主题。我们旨在通过分析气候、土壤特征和物种功能性状之间的相互作用如何共同决定北半球木本植物对干旱、遮荫、寒冷和涝渍胁迫耐受策略的分布和多样性，来揭示这些限制因素。功能性状和土壤肥力主要决定了干旱和涝渍/寒冷耐受策略，而气候因素则强烈影响遮荫耐受性。我们通过定义“胁迫耐受生物群落”和“多耐受性热点地区”来描述观察到的模式，即木本植物群落已趋同于特定耐受策略且多种耐受策略经常共存的地理区域。这些区域的描述首次从宏观生态学角度概述了木本植物非生物胁迫耐受策略多样性生态极限背后的主要环境和功能需求。
