Drivers of plant traits that allow survival in wetlands,Functional Ecology

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Drivers of plant traits that allow survival in wetlands
Functional Ecology ( IF 4.6 ) Pub Date : 2020-02-21 , DOI: 10.1111/1365-2435.13541
Yingji Pan ₁ , Ellen Cieraad ₁ , Beverley R. Clarkson ₂ , Timothy D. Colmer ₃ , Ole Pedersen _{3,

4} , Eric J. W. Visser ₅ , Laurentius A. C. J. Voesenek ₆ , Peter M. Bodegom ₁

Affiliation

Plants have developed a suite of traits to survive the anaerobic and anoxic soil conditions in wetlands. Previous studies on wetland plant adaptive traits have focused mainly on physiological aspects under experimental conditions, or compared the trait expression of the local species pool. Thus, a comprehensive analysis of potential factors driving wetland plant adaptive traits under natural environmental conditions is still missing.In this study, we analysed three important wetland adaptive traits, i.e. root porosity, root/shoot ratio and underwater photosynthetic rate, to explore driving factors using a newly compiled dataset of wetland plants. Based on 21 studies at 38 sites across different biomes, we found that root porosity was affected by an interaction of temperature and hydrological regime; root:shoot ratio was affected by temperature, precipitation and habitat type; and underwater photosynthetic rate was affected by precipitation and life form. This suggests that a variety of driving mechanisms affect the expression of different adaptive traits.The quantitative relationships we observed between the adaptive traits and their driving factors will be a useful reference for future global methane and denitrification modelling studies. Our results also stress that besides the traditionally emphasized hydrological driving factors, other factors at several spatial scales should also be taken into consideration in the context of future functional wetland ecology.

中文翻译：

允许在湿地生存的植物性状的驱动因素

植物已经发展出一系列性状，可以在湿地的厌氧和缺氧土壤条件下生存。以往关于湿地植物适应性性状的研究主要集中在实验条件下的生理方面，或比较当地物种库的性状表达。因此，在自然环境条件下驱动湿地植物适应性状的潜在因素仍然缺乏综合分析。本研究分析了三个重要的湿地适应性状，即根系孔隙率、根茎比和水下光合速率，以探讨驱动因素。使用新编译的湿地植物数据集。基于在不同生物群落 38 个地点的 21 项研究，我们发现根系孔隙度受温度和水文状况相互作用的影响；根茎比受温度影响，降水和栖息地类型；水下光合速率受降水和生命形式的影响。这表明多种驱动机制影响了不同适应性特征的表达。我们观察到的适应性特征与其驱动因素之间的定量关系将为未来全球甲烷和反硝化建模研究提供有用的参考。我们的研究结果还强调，除了传统上强调的水文驱动因素外，在未来功能湿地生态的背景下，还应考虑多个空间尺度的其他因素。我们观察到的适应性特征与其驱动因素之间的定量关系将为未来全球甲烷和反硝化建模研究提供有用的参考。我们的研究结果还强调，除了传统上强调的水文驱动因素外，在未来功能湿地生态的背景下，还应考虑多个空间尺度的其他因素。我们观察到的适应性特征与其驱动因素之间的定量关系将为未来全球甲烷和反硝化建模研究提供有用的参考。我们的研究结果还强调，除了传统上强调的水文驱动因素外，在未来功能湿地生态的背景下，还应考虑多个空间尺度的其他因素。

更新日期：2020-02-21

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