气候变化领域集成服务门户(CCPortal): The other side of tropical forest drought: do shallow water table regions of Amazonia act as large-scale hydrological refugia from drought?Palavras-ChavePalabras clave

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DOI	10.1111/nph.17914
	The other side of tropical forest drought: do shallow water table regions of Amazonia act as large-scale hydrological refugia from drought?Palavras-ChavePalabras clave
	Costa, Flavia R. C.; Schietti, Juliana; Stark, Scott C.; Smith, Marielle N.
发表日期	2023
ISSN	0028-646X
EISSN	1469-8137
起始页码	714
结束页码	733
卷号	237 期号:3
英文摘要	Tropical forest function is of global significance to climate change responses, and critically determined by water availability patterns. Groundwater is tightly related to soil water through the water table depth (WT), but historically neglected in ecological studies. Shallow WT forests (WT < 5 m) are underrepresented in forest research networks and absent in eddy flux measurements, although they represent c. 50% of the Amazon and are expected to respond differently to global-change-related droughts. We review WT patterns and consequences for plants, emerging results, and advance a conceptual model integrating environment and trait distributions to predict climate change effects. Shallow WT forests have a distinct species composition, with more resource-acquisitive and hydrologically vulnerable trees, shorter canopies and lower biomass than deep WT forests. During 'normal' climatic years, shallow WT forests have higher mortality and lower productivity than deep WT forests, but during moderate droughts mortality is buffered and productivity increases. However, during severe drought, shallow WT forests may be more sensitive due to shallow roots and drought-intolerant traits. Our evidence supports the hypothesis of neglected shallow WT forests being resilient to moderate drought, challenging the prevailing view of widespread negative effects of climate change on Amazonian forests that ignores WT gradients, but predicts they could collapse under very strong droughts.
英文关键词	climate change forecasting; ecosystem function; hydrological regimes; soil moisture; tipping points; tropical forests
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000743068200001
来源期刊	NEW PHYTOLOGIST
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/280416
作者单位	Institute Nacional de Pesquisas da Amazonia; Universidade Federal de Amazonas; Michigan State University
推荐引用方式 GB/T 7714	Costa, Flavia R. C.,Schietti, Juliana,Stark, Scott C.,et al. The other side of tropical forest drought: do shallow water table regions of Amazonia act as large-scale hydrological refugia from drought?Palavras-ChavePalabras clave[J],2023,237(3).
APA	Costa, Flavia R. C.,Schietti, Juliana,Stark, Scott C.,&Smith, Marielle N..(2023).The other side of tropical forest drought: do shallow water table regions of Amazonia act as large-scale hydrological refugia from drought?Palavras-ChavePalabras clave.NEW PHYTOLOGIST,237(3).
MLA	Costa, Flavia R. C.,et al."The other side of tropical forest drought: do shallow water table regions of Amazonia act as large-scale hydrological refugia from drought?Palavras-ChavePalabras clave".NEW PHYTOLOGIST 237.3(2023).