干旱区生态环境知识资源中心(Arid): Plant community composition and structure under short-term grazing exclusion in steppic arid rangelands

Arid

DOI	10.1016/j.ecolind.2020.106910
	Plant community composition and structure under short-term grazing exclusion in steppic arid rangelands
	Kouba, Yacine; Merdas, Saifi; Mostephaoui, Tewfik; Saadali, Badreddine; Chenchouni, Haroun
通讯作者	Kouba, Y
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2021
卷号	120
英文摘要	Grazing exclusion has been proved to be an effective approach for naturally restoring degraded rangelands. Still, the effect of this management practice on plant community composition and structure is ambiguous, especially under prolonged and repeated drought events. Here, we investigated the responses of community composition (i.e. incidence-based) and structure (i.e. abundance-based) to short-term sheep grazing exclusion under severe drought episode in the arid steppes of Alfa-grass (Stipa tenacissima L.) with a long evolutionary history of grazing. Individual species responses were tested based on species occurrence and abundance in either grazed or grazing-excluded steppes. Besides, indicator species analysis was used to identify species indicative of grazing-excluded steppes. Likewise, incidence-based and abundance-based alpha-diversity, beta-diversity and functional groups' diversities were quantified using Hill Numbers and compared between the two steppe managements types. Under severe drought conditions, sheep grazing exclusion allowed the apparition of a large number of increasers, colonizers, and native indicator plant species. It also improved the size of regional species pool and increased overall incidence-based and abundance-based alpha-diversity. Moreover, grazing exclusion decreased the abundance-based beta-diversity at local scale but increased it at landscape scale. The incidence-based beta-diversity significantly decreased at the landscape scale. Grazing exclusion enabled a significant spatial structuration of abundance-based beta-diversity components by maintaining high balanced variation in species abundance at large spatial scale and greater abundance-gradient at fine-scale. Our results suggest that the implementation of shortterm grazing exclusion in arid steppes would be the appropriate management practice for vegetation and habitat during prolonged droughts since it permits the recovery of native plant species and affects positively the size of the regional species pool, the overall incidenceand abundance-based alpha-diversity as well as the abundance-based beta-diversity (chiefly at landscape scale).
英文关键词	Mediterranean drylands Alpha and beta diversity Rangelands Grazing exclusion Indicator plant species
类型	Article
语种	英语
开放获取类型	Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000591907400005
WOS关键词	MEDITERRANEAN GRASSLAND ; SPECIES-DIVERSITY ; SOIL PROPERTIES ; LONG-TERM ; VEGETATION ; RESTORATION ; COMPONENTS ; LAND ; DISSIMILARITY ; SUCCESSION
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/328025
作者单位	[Kouba, Yacine; Saadali, Badreddine; Chenchouni, Haroun] Univ Larbi Ben Mhidi, Lab Nat Resources & Management Sensit Environm RN, Oum El Bouaghi, Algeria; [Merdas, Saifi; Mostephaoui, Tewfik] Ctr Sci & Tech Res Arid Reg, Biskra, Algeria; [Merdas, Saifi] Mentouri Bros Univ, Dept Biol & Ecol, Lab Biol & Environm, Constantine, Algeria; [Chenchouni, Haroun] Univ Tebessa, Dept Nat & Life Sci, Tebessa, Algeria
推荐引用方式 GB/T 7714	Kouba, Yacine,Merdas, Saifi,Mostephaoui, Tewfik,et al. Plant community composition and structure under short-term grazing exclusion in steppic arid rangelands[J],2021,120.
APA	Kouba, Yacine,Merdas, Saifi,Mostephaoui, Tewfik,Saadali, Badreddine,&Chenchouni, Haroun.(2021).Plant community composition and structure under short-term grazing exclusion in steppic arid rangelands.ECOLOGICAL INDICATORS,120.
MLA	Kouba, Yacine,et al."Plant community composition and structure under short-term grazing exclusion in steppic arid rangelands".ECOLOGICAL INDICATORS 120(2021).