干旱区生态环境知识资源中心(Arid): Functional diversity and composition of Caatinga woody flora are negatively impacted by chronic anthropogenic disturbance

Arid

DOI	10.1111/1365-2745.13177
	Functional diversity and composition of Caatinga woody flora are negatively impacted by chronic anthropogenic disturbance
	Ribeiro, Elaine M. S.1,2; Lohbeck, Madelon 3,4; Santos, Braulio A.5; Arroyo-Rodriguez, Victor 6; Tabarelli, Marcelo 7; Leal, Inara R.7
通讯作者	Leal, Inara R.
来源期刊	JOURNAL OF ECOLOGY
ISSN	0022-0477
EISSN	1365-2745
出版年	2019
卷号	107 期号:5 页码:2291-2302
英文摘要	1. Tropical plant assemblages can be taxonomically and phylogenetically impoverished by chronic anthropogenic disturbance (CAD), such as firewood collection and extensive grazing. However, to what extent the functional dimension responds to CAD is still unclear. Such knowledge is urgently required for predicting, preventing or even reversing the impacts of CAD. 2. Chronic anthropogenic disturbance may operate as an ecological filter by selecting functional trait values (e.g. low wood density), thereby altering the functional composition and diversity of plant assemblages. We tested this hypothesis using 29 woody plant assemblages across three ontogenetic stages (seedlings, saplings and adults) in a 220-km(2) landscape of the Caatinga, northeast Brazil. We adopted a CAD index consisting of four indicators (proximity to urban centre and houses and the density of both people and livestock) and tested how well it explained the functional diversity and effect sizes (richness, evenness and dispersion) and composition (community-weighted mean). 3. Chronic anthropogenic disturbance affected several functional metrics across the three ontogenetic stages. However, CAD effects were stronger in adult communities by negatively affecting functional richness, dispersion and their effect sizes. CAD also altered the functional composition of leaf mass per area, woody density and leaf area of adult assemblages. Sapling communities were affected in terms of functional composition (leaf area, leaf dry matter and wood density), with positive and negative effects, while seedling assemblages responded positively to CAD only in terms of functional evenness and its effect size. Some changes in functional metrics were influenced by dominant Euphorbiaceae species across ontogenetic stages, especially in terms of leaf area and woody density. 4. Synthesis. Chronic anthropogenic disturbance is an important driver of plant-community functional organization across ontogenetic stages in the Caatinga. Adult assemblages are particularly sensitive and tend to lose functional niche space andsupport more acquisitive rather than conservative strategies as chronic anthropogenic disturbance increases. The proliferation of Euphorbiaceae disturbance-adapted species can explain part of the community responses to chronic anthropogenic disturbance. Our findings highlight the ecological effects of chronic anthropogenic disturbance and show that it is a key influence on tropical biotas. Changes in plant functional traits associated with plant resource use are likely to affect ecosystem functioning and services provided by Caatinga.
英文关键词	biodiversity loss community assembly functional plant traits human disturbance seasonally dry tropical forest semi-arid ecosystem wood plant assemblages
类型	Article
语种	英语
国家	Brazil ; Kenya ; Netherlands ; Mexico
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000484311000021
WOS关键词	PLANT ; TRAITS ; DRY ; IMPOVERISHMENT ; HOMOGENIZATION ; COMMUNITIES ; UNDERSTORY ; FRAMEWORK ; INVASION ; WINNERS
WOS类目	Plant Sciences ; Ecology
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology
来源机构	Universidad Nacional Autónoma de México
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216935
作者单位	1.Univ Pernambuco, Colegiado Ciencias Biol, Campus Petrolina, Petrolina, PE, Brazil; 2.Univ Fed Pernambuco, Dept Bot, Programa Posgrad Biol Vegetal, Recife, PE, Brazil; 3.World Agroforestry ICRAF, Nairobi, Kenya; 4.Wageningen Univ, Forest Ecol & Forest Management Grp, Wageningen, Netherlands; 5.Univ Fed Paraiba, Dept Sistemat & Ecol, Joao Pessoa, PB, Brazil; 6.Univ Nacl Autonoma Mexico, Inst Invest Ecosistemas & Sustentabilidad, Morelia, Michoacan, Mexico; 7.Univ Fed Pernambuco, Dept Bot, Recife, PE, Brazil
推荐引用方式 GB/T 7714	Ribeiro, Elaine M. S.,Lohbeck, Madelon,Santos, Braulio A.,et al. Functional diversity and composition of Caatinga woody flora are negatively impacted by chronic anthropogenic disturbance[J]. Universidad Nacional Autónoma de México,2019,107(5):2291-2302.
APA	Ribeiro, Elaine M. S.,Lohbeck, Madelon,Santos, Braulio A.,Arroyo-Rodriguez, Victor,Tabarelli, Marcelo,&Leal, Inara R..(2019).Functional diversity and composition of Caatinga woody flora are negatively impacted by chronic anthropogenic disturbance.JOURNAL OF ECOLOGY,107(5),2291-2302.
MLA	Ribeiro, Elaine M. S.,et al."Functional diversity and composition of Caatinga woody flora are negatively impacted by chronic anthropogenic disturbance".JOURNAL OF ECOLOGY 107.5(2019):2291-2302.