干旱区生态环境知识资源中心(Arid): Environmental drivers of taxonomic and phylogenetic diversity patterns of plant communities in semi-arid steppe rangelands of North Africa

Arid

DOI	10.1016/j.ecolind.2021.108279
	Environmental drivers of taxonomic and phylogenetic diversity patterns of plant communities in semi-arid steppe rangelands of North Africa
	Macheroum, Amale; Kadik, Leila; Neffar, Souad; Chenchouni, Haroun
通讯作者	Chenchouni, H (corresponding author), Univ Tebessa, Fac Exact Sci & Nat & Life Sci, Dept Nat & Life Sci, Tebessa 12002, Algeria.
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2021
卷号	132
英文摘要	Since phytoecological and biodiversity studies deepen our understanding on ecosystem functioning and habitat health status of rangelands, this study analyzed the composition and plant taxonomic and phylogenetic diversity of semi-arid steppe vegetation communities in rangelands of northeastern Algeria. Based on 80 floristic samples, vegetation was analyzed using various species diversity parameters (incidence- and abundance-based diversity and similarity indices, rarefaction and extrapolation estimations). Sampling totaled 75,197 plant individuals that were classified into 63 species, 55 genera and 21 families, with predominance of Asteraceae (33.3%) and Fabaceae (14.3%) species. Rarefaction and extrapolation curves applied for the whole steppe vegetation showed that the expected species richness was stable and no rare species could be found when increasing the sample size. Generalized linear models showed that the variation of plant diversity parameters (alpha-biodiversity) was significant among the phytoecological groups individualized. The multiple factor analysis demonstrated that inter-relationships between the phytoecological groups result from characteristics of soil surface, vegetation indicators, and dominant plant species that influenced plant diversity indices. The qualitative and quantitative analysis of similarity (beta-biodiversity) revealed high resemblances (>50%) between these groups, indicating a spatial homogenization of plant communities, which are dominated by annual species. The variation of phylogenetic diversity, estimated using taxonomic structures (i.e. genus/species and family/species ratios) was related to local environmental conditions. Phylogenetic diversity increased with the increase in total vegetation cover and the average height of Halfa grass (Stipa tenacissima), but it was negatively correlated with land degradation indicators such as sand deposit sheets, bedrock outcrop, coarse-grained materials, and plant necromass or vegetation litter). This study demonstrated that despite the recorded plant diversity, the quality of rangelands in the study area was of a therophytic character (substantial level of annuals), indicating a state of land and vegetation degradation in rangelands of northeastern Algeria.
英文关键词	Algerian steppes Plant biodiversity Plant community Semi-arid rangelands Sampling effort Land degradation
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000710437100002
WOS关键词	FLORISTIC DIVERSITY ; VEGETATION ANALYSIS ; REHABILITATION ; INDICATOR ; DESERT ; IMPACT ; MECCA ; SOILS ; LAKE
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/2XILL650/368150
作者单位	[Macheroum, Amale; Neffar, Souad; Chenchouni, Haroun] Univ Tebessa, Fac Exact Sci & Nat & Life Sci, Dept Nat & Life Sci, Tebessa 12002, Algeria; [Macheroum, Amale; Kadik, Leila] Houari Boumed Univ Sci & Technol USTHB, Fac Biol Sci, Dept Ecol & Environm, Algiers 16111, Algeria; [Kadik, Leila] Houari Boumed Univ Sci & Technol USTHB, Fac Biol Sci, Lab Vegetal Ecol & Environm, Algiers 16111, Algeria; [Chenchouni, Haroun] Univ Oum Bouaghi, Lab Nat Resources & Management Sensit Environm RN, Oum El Bouaghi 04000, Algeria; [Chenchouni, Haroun] Higher Natl Sch Forests, Khenchela 40000, Algeria
推荐引用方式 GB/T 7714	Macheroum, Amale,Kadik, Leila,Neffar, Souad,et al. Environmental drivers of taxonomic and phylogenetic diversity patterns of plant communities in semi-arid steppe rangelands of North Africa[J],2021,132.
APA	Macheroum, Amale,Kadik, Leila,Neffar, Souad,&Chenchouni, Haroun.(2021).Environmental drivers of taxonomic and phylogenetic diversity patterns of plant communities in semi-arid steppe rangelands of North Africa.ECOLOGICAL INDICATORS,132.
MLA	Macheroum, Amale,et al."Environmental drivers of taxonomic and phylogenetic diversity patterns of plant communities in semi-arid steppe rangelands of North Africa".ECOLOGICAL INDICATORS 132(2021).