干旱区生态环境知识资源中心(Arid): Livestock grazing-induced large-scale biotic homogenization in arid Mediterranean steppe rangelands

Arid

DOI	10.1002/ldr.4095
	Livestock grazing-induced large-scale biotic homogenization in arid Mediterranean steppe rangelands
	Merdas, Saifi; Kouba, Yacine; Mostephaoui, Tewfik; Farhi, Yassine; Chenchouni, Haroun
通讯作者	Merdas, S (corresponding author), Ctr Sci & Tech Res Arid Reg, Biskra 07000, Algeria.
来源期刊	LAND DEGRADATION & DEVELOPMENT
ISSN	1085-3278
EISSN	1099-145X
出版年	2021
英文摘要	Despite many studies that have explored the effect of livestock grazing on plant communities, the response of species composition and diversity to livestock grazing in arid rangelands remains ambiguous. This study examined the effects of livestock grazing on plant communities in arid steppe rangelands of North Africa. Plant diversity of annual species, perennial species, and all species combined were measured and compared between grazed and grazing-excluded areas. We also examined the relative importance of species turnover and community nestedness. Moreover, the effects of livestock grazing on beta diversity at local among transects and landscape among sites scales were examined using the multiplicative diversity partitioning. Results revealed that livestock grazing significantly decreased the alpha diversity of all species combined and the diversity of annual plants. Livestock grazing induced a shift in plant community composition where most species composition variation (similar to 74%) was due to infrequent species replacement 'turnover' between the two management types rather than nestedness (similar to 26%). Results revealed also that among transects, beta diversity was higher in grazed steppes than in grazing-excluded steppes. Whereas, among sites, beta diversity was lower in grazed steppes compared to grazing-excluded steppes. These findings suggest that livestock grazing in arid steppe rangelands increases the variation in plant species composition at a local spatial scale and engenders vegetation homogeneity at a landscape spatial scale. Therefore, the implementation of appropriate management practices such as short-term grazing exclusion is mandatory to prevent these ecosystems from large-scale biotic homogenization.
英文关键词	alpha and beta diversity ecological spatial-scaling Mediterranean rangelands plant community rangeland grazing species composition dissimilarity species turnover
类型	Article
语种	英语
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000700829400001
WOS关键词	PLANT COMMUNITY ; SPATIAL-PATTERNS ; BETA-DIVERSITY ; GRASSLAND ; ECOSYSTEMS ; GRADIENT ; HERBIVORES ; COMPONENTS ; VEGETATION
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364111
作者单位	[Merdas, Saifi; Mostephaoui, Tewfik; Farhi, Yassine] Ctr Sci & Tech Res Arid Reg, Biskra 07000, Algeria; [Merdas, Saifi; Mostephaoui, Tewfik] Res Ctr Terr Planning, Constantine, Algeria; [Kouba, Yacine] Univ Oum El Bouaghi, Dept Geog & Reg Planning, Oum El Bouaghi, Algeria; [Chenchouni, Haroun] Univ Oum El Bouaghi, Lab Nat Resources & Management Sensit Environm, Oum El Bouaghi, Algeria; [Chenchouni, Haroun] Univ Tebessa, Fac Exact Sci & Nat & Life Sci, Dept Nat & Life Sci, Tebessa, Algeria
推荐引用方式 GB/T 7714	Merdas, Saifi,Kouba, Yacine,Mostephaoui, Tewfik,et al. Livestock grazing-induced large-scale biotic homogenization in arid Mediterranean steppe rangelands[J],2021.
APA	Merdas, Saifi,Kouba, Yacine,Mostephaoui, Tewfik,Farhi, Yassine,&Chenchouni, Haroun.(2021).Livestock grazing-induced large-scale biotic homogenization in arid Mediterranean steppe rangelands.LAND DEGRADATION & DEVELOPMENT.
MLA	Merdas, Saifi,et al."Livestock grazing-induced large-scale biotic homogenization in arid Mediterranean steppe rangelands".LAND DEGRADATION & DEVELOPMENT (2021).