干旱区生态环境知识资源中心(Arid): Divergent hydraulic strategies of two deciduous tree species to deal with drought in the Brazilian semi-arid region

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DOI	10.1007/s00468-024-02506-9
	Divergent hydraulic strategies of two deciduous tree species to deal with drought in the Brazilian semi-arid region
	Medeiros, Maria; Wright, Cynthia L.; de Lima, Andre Luiz Alves; Brito, Nielson Dinivan da Silva; Souza, Rodolfo; Silva, Jose Raliuson Inacio; Souza, Eduardo
通讯作者	Medeiros, M
来源期刊	TREES-STRUCTURE AND FUNCTION
ISSN	0931-1890
EISSN	1432-2285
出版年	2024
卷号	38 期号:3 页码:681-694
英文摘要	Key messageThe high-wood-density species displays greater water limitation tolerance, as it maintains leaf transpiration under drought conditions.AbstractThe relationship between environmental conditions and plant hydraulic safety is essential to understand species' strategies to minimize damage to their hydraulic structure yet maintain function. In the Brazilian semi-arid, the relationships between rainfall seasonality, hydraulic conductivity, wood density, stomatal conductance, and phenology in different species still needs to be clarified. To better understand these relationships, we selected two deciduous trees species with contrasting wood density: (1) Commiphora leptophloeos (Mart.) J.B. Gillett (low wood density) and (2) Cenostigma pyramidale (Tul.) E. Gagnon & G. P. Lewis (high wood density) from the Caatinga dry forest of northeast Brazil. We tracked monthly measurements of whole-tree hydraulic conductivity, leaf stomatal conductance, leaf transpiration rate, xylem water potential, and phenology. We found that the low-wood-density species had a higher whole-tree hydraulic conductivity and an early leaf flush and fall. In addition, lower leaf transpiration rate and higher water storage capacity maintained high xylem water potential and stomatal conductance values, especially in the rainy season. On the other hand, the high-wood-density species had a lower whole-tree hydraulic conductivity and higher leaf transpiration rate, even during the dry season. These results point to the divergent hydraulic strategies employed by each species, further suggesting opposing hydraulic safety pathways during drought.
英文关键词	Dry forest Phenology Hydraulic conductivity Stomatal conductance Wood density Water potential
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001190327800002
WOS关键词	TROPICAL DRY FOREST ; WATER STORAGE ; SAP FLOW ; CANOPY TRANSPIRATION ; FUNCTIONAL-GROUPS ; XYLEM HYDRAULICS ; LOESS PLATEAU ; WOOD DENSITY ; SOIL ; DYNAMICS
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405814
推荐引用方式 GB/T 7714	Medeiros, Maria,Wright, Cynthia L.,de Lima, Andre Luiz Alves,et al. Divergent hydraulic strategies of two deciduous tree species to deal with drought in the Brazilian semi-arid region[J],2024,38(3):681-694.
APA	Medeiros, Maria.,Wright, Cynthia L..,de Lima, Andre Luiz Alves.,Brito, Nielson Dinivan da Silva.,Souza, Rodolfo.,...&Souza, Eduardo.(2024).Divergent hydraulic strategies of two deciduous tree species to deal with drought in the Brazilian semi-arid region.TREES-STRUCTURE AND FUNCTION,38(3),681-694.
MLA	Medeiros, Maria,et al."Divergent hydraulic strategies of two deciduous tree species to deal with drought in the Brazilian semi-arid region".TREES-STRUCTURE AND FUNCTION 38.3(2024):681-694.