干旱区生态环境知识资源中心(Arid): The response of plant functional traits to aridity in a tropical dry forest

Arid

DOI	10.1016/j.scitotenv.2020.141177
	The response of plant functional traits to aridity in a tropical dry forest
	Pereira de Oliveira, Ana Claudia; Nunes, Alice; Rodrigues, Renato Garcia; Branquinho, Cristina
通讯作者	Nunes, A
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	747
英文摘要	Drylands are experiencing an overall increase in aridity that is predicted to intensify in the future due to climate change. This may cause changes in the structure and functioning of dryland ecosystems, affecting ecosystem services and human well-being. Therefore, detecting early signs of ecosystem change before irreversible damage takes place is important. Thus, here we used a space-for-time substitution approach to study the response of the plant community to aridity in a Tropical dry forest (Caatinga, Brazil), and infer potential consequences of climate change. We assessed plant functional structure using the community weighted mean (CWM) and functional diversity, measured through functional dispersion (FDis), along a 700 km climatic gradient. We studied 13 functional traits, reflecting strategies associated with establishment, defense, regeneration, and dispersal of the most abundant 48 plant species in 113 sampling sites. Spearman correlations were used to test the relation between aridity and single-trait functional metrics. Aridity was a major environmental filter of the plant community functional structure. We found a higher abundance of species with deciduous leaves, zoochorous dispersal, fleshy fruits, chemical defense exudation and spinescence, and crassulacean acid metabolism towards more arid sites, at the expense of species with evergreen and thicker leaves, autochory dispersal, and shrub growth-form. The FDis of leaf type and thickness decreased with aridity, whereas FDis of fruit type, photosynthetic pathway, and defense strategies increased. Our findings provide functional indicators to early detect climate change impacts on Caatinga structure and functioning, to timely adopt preventive measures (e.g. conservation of forest remnants) and restoration actions (e.g. introduction of species with specific functional traits) in this threatened and unique ecosystem. (C) 2020 Elsevier B.V. All rights reserved.
英文关键词	Caatinga Climatic gradient Drylands Ecosystem functioning Functional diversity Space-for-time substitution
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000579386300096
WOS关键词	DIVERSITY ; HERBIVORES ; AREA
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326853
作者单位	[Pereira de Oliveira, Ana Claudia; Nunes, Alice; Branquinho, Cristina] Univ Lisbon, Fac Ciencias, Ctr Ecol Evolut & Environm Changes, Lisbon, Portugal; [Rodrigues, Renato Garcia] Univ Fed Vale Sao Francisco, Nucle Ecol & Monitoramento Ambiental, Petrolina, PE, Brazil
推荐引用方式 GB/T 7714	Pereira de Oliveira, Ana Claudia,Nunes, Alice,Rodrigues, Renato Garcia,et al. The response of plant functional traits to aridity in a tropical dry forest[J],2020,747.
APA	Pereira de Oliveira, Ana Claudia,Nunes, Alice,Rodrigues, Renato Garcia,&Branquinho, Cristina.(2020).The response of plant functional traits to aridity in a tropical dry forest.SCIENCE OF THE TOTAL ENVIRONMENT,747.
MLA	Pereira de Oliveira, Ana Claudia,et al."The response of plant functional traits to aridity in a tropical dry forest".SCIENCE OF THE TOTAL ENVIRONMENT 747(2020).