Drier tropical forests are susceptible to functional changes in response to a long-term drought
Drier tropical forests are susceptible to functional changes in response to a long-term drought
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DOI：
10.1111/ele.13243
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发表时间：
2019-05-01
期刊：
影响因子：
8.8
通讯作者：
Malhi, Yadvinder
中科院分区：
文献类型：
--
作者：
Aguirre-Gutierrez, Jesus;Oliveras, Imma;Malhi, Yadvinder
气候变化对生物多样性的分布有着深远的影响，但解开气候变化与生态系统功能之间的联系是一项挑战，特别是在热带森林等高度多样性的系统中。热带森林对气候变化的反应也可能不同，基线气候条件可能导致对干旱反应的强度和时间不同。基于特征的方法提供了将功能组成、生态系统功能和环境变化联系起来的机会。我们展示了这种方法的力量，提出了一种新的分析不同的热带森林气候变化的长期响应沿着降雨梯度。我们探讨了如何关键生态系统的地球化学性质随着时间的推移而改变的结果，几十年的干燥。值得注意的是，我们发现，干燥的热带森林增加了落叶物种的丰富性，一般改变更多的功能比森林生长在潮湿的条件下，这表明一个增强的能力，以适应生态干燥的环境。
Climatic changes have profound effects on the distribution of biodiversity, but untangling the links between climatic change and ecosystem functioning is challenging, particularly in high diversity systems such as tropical forests. Tropical forests may also show different responses to a changing climate, with baseline climatic conditions potentially inducing differences in the strength and timing of responses to droughts. Trait-based approaches provide an opportunity to link functional composition, ecosystem function and environmental changes. We demonstrate the power of such approaches by presenting a novel analysis of long-term responses of different tropical forest to climatic changes along a rainfall gradient. We explore how key ecosystem's biogeochemical properties have shifted over time as a consequence of multi-decadal drying. Notably, we find that drier tropical forests have increased their deciduous species abundance and generally changed more functionally than forests growing in wetter conditions, suggesting an enhanced ability to adapt ecologically to a drying environment.