干旱区生态环境知识资源中心(Arid): Livestock settlement affects shrub abundance via plant functional diversity but not species richness in arid environments

Arid

DOI	10.1007/s11258-020-01079-0
	Livestock settlement affects shrub abundance via plant functional diversity but not species richness in arid environments
	Gatica, Gabriel; Escudero, Adrian; Pucheta, Eduardo
通讯作者	Gatica, G
来源期刊	PLANT ECOLOGY
ISSN	1385-0237
EISSN	1573-5052
出版年	2020
卷号	221 期号:12 页码:1253-1264
英文摘要	Recent theoretical and empirical studies have assumed that livestock grazing acts as a biotic filter favouring plant species with functional traits that confer resistance to herbivory. Considering that plant functional traits affect the species abundance and persistence in a community, alterations in functional diversity would result in changes in species richness, evenness or growth form composition. However, empirical tests of the intermediary role of functional diversity among livestock pressure, climate and species diversity and composition remain rare. We evaluated if functional diversity acts as an intermediary between livestock pressure and several components of taxonomical diversity in plant communities located along an aridity gradient in central-western Argentina. We estimated functional diversity using four plant traits that are expected to reflect trade-offs between resource-use strategies and grazing resistance. We found that livestock pressure increased shrub abundance by negatively affecting functional diversity, and this effect was amplified by increases in aridity. On the other hand, aridity promoted declines in species richness by reductions in functional diversity. Overall, our results suggest that functional diversity acts as intermediary component between livestock pressure and growth form composition; and also between aridity and species richness. Finally, our findings highlight that livestock grazing may be considered as a biotic filter affecting growth form composition but not species richness and evenness.
英文关键词	Biotic filter Environmental filter Functional dispersion Functional redundancy Goat grazing Path analysis Watering points
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000569241900001
WOS关键词	MONTE DESERT ; ECOSYSTEM MULTIFUNCTIONALITY ; LAND-USE ; VEGETATION ; RESPONSES ; TRAITS ; GRADIENT ; VARIABILITY ; DYNAMICS ; ECOLOGY
WOS类目	Plant Sciences ; Ecology ; Forestry
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326285
作者单位	[Gatica, Gabriel; Escudero, Adrian] Univ Nacl San Juan, Fac Ciencias Exactas Fis & Nat, Dept Biol, Av Ignacio Roza 599 Oeste,J5402DCS, San Juan, Argentina; [Gatica, Gabriel] CIFICEN Univ Nacl Ctr Provincia Buenos Aires, Paraje Arroyo Seco, Campus Univ,B7000GHG Tandil, Buenos Aires, DF, Argentina; [Pucheta, Eduardo] Univ Rey Juan Carlos, Dept Biol Geol Fis & Quim Inorgan, Escuela Super Ciencias Expt & Tecnol, C Tulipan S-N, Madrid 28933, Spain
推荐引用方式 GB/T 7714	Gatica, Gabriel,Escudero, Adrian,Pucheta, Eduardo. Livestock settlement affects shrub abundance via plant functional diversity but not species richness in arid environments[J],2020,221(12):1253-1264.
APA	Gatica, Gabriel,Escudero, Adrian,&Pucheta, Eduardo.(2020).Livestock settlement affects shrub abundance via plant functional diversity but not species richness in arid environments.PLANT ECOLOGY,221(12),1253-1264.
MLA	Gatica, Gabriel,et al."Livestock settlement affects shrub abundance via plant functional diversity but not species richness in arid environments".PLANT ECOLOGY 221.12(2020):1253-1264.