干旱区生态环境知识资源中心(Arid): Predicting Leaf Trait Variability as a Functional Descriptor of the Effect of Climate Change in Three Perennial Grasses

Arid

DOI	10.3390/d11120233
	Predicting Leaf Trait Variability as a Functional Descriptor of the Effect of Climate Change in Three Perennial Grasses
	Hamdani, Marwa; Krichen, Khouloud; Chaieb, Mohamed
通讯作者	Chaieb, Mohamed
来源期刊	DIVERSITY-BASEL
EISSN	1424-2818
出版年	2019
卷号	11 期号:12
英文摘要	Aims of the study: The most important trends of the current climate variability is the scarcity of rains that affects arid ecosystems. The aim of this study was to explore the variability of leaf functional traits by which grassland species survive and resist drought and to investigate the potential link between resource use efficiency and water scarcity resistance strategies of species. Methods: Three grasses (Cenchrus ciliaris (C-4), Stipa parviflora and Stipa lagascae (C-3)) were established in a randomized block consisting of eleven replications. The seedlings were kept under increasing levels of water stress. In addition to their functional leaf traits, the rate of water loss and dimensional shrinkage were also measured. Key Results: Thicker and denser leaves, with higher dry matter contents, low specific leaf area and great capacity of water retention are considered among the grasses' strategies of dehydration avoidance. Significant differences between the means of the functional traits were obtained. Furthermore, strong correlations among leaf traits were also detected (Spearman's r exceeding 0.8). Conclusions: The results provide evidence that the studied grasses respond differently to drought by exhibiting a range of interspecific functional strategies that may ameliorate the resilience of grassland species communities under extreme drought events.
英文关键词	climate change arid land leaf functional traits water stress resource use strategies Cenchrus ciliaris L Stipa parviflora Desf Stipa lagascae R & Sch
类型	Article
语种	英语
国家	Tunisia
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000505598100020
WOS关键词	STIPA-TENACISSIMA ; WATER RELATIONS ; DROUGHT ; PLANTS ; AREA ; L. ; PHOTOSYNTHESIS ; EVOLUTIONARY ; MECHANISM ; SEEDLINGS
WOS类目	Biodiversity Conservation ; Ecology
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
EI主题词	2019-12-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311208
作者单位	Univ Sfax, Fac Sci, Lab Ecosyst & Biodivers Arid Land Tunisia LEBIOMA, Sfax 3000, Tunisia
推荐引用方式 GB/T 7714	Hamdani, Marwa,Krichen, Khouloud,Chaieb, Mohamed. Predicting Leaf Trait Variability as a Functional Descriptor of the Effect of Climate Change in Three Perennial Grasses[J],2019,11(12).
APA	Hamdani, Marwa,Krichen, Khouloud,&Chaieb, Mohamed.(2019).Predicting Leaf Trait Variability as a Functional Descriptor of the Effect of Climate Change in Three Perennial Grasses.DIVERSITY-BASEL,11(12).
MLA	Hamdani, Marwa,et al."Predicting Leaf Trait Variability as a Functional Descriptor of the Effect of Climate Change in Three Perennial Grasses".DIVERSITY-BASEL 11.12(2019).