干旱区生态环境知识资源中心(Arid): Biogeographical characterisation of Egypt based on environmental features and endemic vascular plants distribution

Arid

DOI	10.1016/j.apgeog.2020.102208
	Biogeographical characterisation of Egypt based on environmental features and endemic vascular plants distribution
	Abdelaal, Mohamed 1,3; Fois, Mauro 1; Fenu, Giuseppe 1; Bacchetta, Gianluigi 1,2
通讯作者	Fois, Mauro
来源期刊	APPLIED GEOGRAPHY
ISSN	0143-6228
EISSN	1873-7730
出版年	2020
卷号	119
英文摘要	Biogeographical studies are considered effective for investigations on macroecology and evolution, as well as for delineating patterns of endemism and identifying the key drivers influencing the historical distribution of species. Clustering techniques, based on environmental datasets and distribution of endemic species, have been largely used in biogeography and for the definition of endemic-rich regions where conservation actions should be implemented. Despite several earlier studies have dealt with the biogeographical territories in Egypt, none of them have provided a replicable method to support such regionalisation. We proposed a two-step procedure for the biogeographical regionalisation of Egypt consisting in (1) the definition of environmental clusters (based on 24 climatic, three topographic, two soil organic carbon content and pH, and four habitat heterogeneity variables) by using the k-nearest neighbours algorithm and (2) the spatial clustering of such clusters according to the distribution of 140 endemic vascular plants. The hierarchical clustering and indicator values analyses, based on the presence-absence matrix of endemic taxa in each cluster were performed to define two cut-off levels of biogeographical sectors and subsectors. A total of six sectors and nine subsectors were identified. Climatic-related variables, elevation and soil organic carbon were the most important determinants for environmental clustering of Egypt. The highest endemic richness was recorded in the Marioutico-Arishian (71 species), Sinaico-Arabian (62 species) and Nilotic (16 species) sectors, and in Sinaic (54 species), Arishian (45 species) and Marioutic (40 species) subsectors. Nonetheless, the most protected sectors were Elbanian and Suezian (62.73 and 29.05%, respectively) while the lowest sectors were Nilotic and Marioutico-Arishian (9.86 and 13.26%, respectively). The already established protected areas in Egypt are not sufficient for conserving the representation of the identified endemic rich plant sectors. This two-step procedure confirms the usefulness of environmental attributes together with the spatial distribution of endemic vascular plants to define the biogeographical units in Egypt. Our regionalisation method could be replicated for other species' groups, with the ultimate goal of integration all species of interest in a single biogeographical system. Furthermore, the presented regionalisation will help to identify weaknesses in current protection actions and to understand biogeographical processes.
英文关键词	Areas of endemism Environmental clusters North Africa Phytogeography Plant conservation
类型	Article
语种	英语
国家	Italy ; Egypt
收录类别	SSCI
WOS记录号	WOS:000541867800007
WOS关键词	MEDITERRANEAN COAST ; CLUSTER-ANALYSIS ; SPATIAL SCALES ; REGIONALIZATION ; REGIONS ; DESERT ; PHYTOGEOGRAPHY ; BIODIVERSITY ; RICHNESS ; NORTH
WOS类目	Geography
WOS研究方向	Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319389
作者单位	1.Univ Cagliari, Ctr Conservaz Biodiversita CCB, Dipartimento Sci Vita & Ambiente, Viale S Ignazio da Laconi 13, I-09123 Cagliari, Italy; 2.Univ Cagliari, Hortus Botanicus Karalitanus HBK, Viale S Ignazio da Laconi 9-11, I-09123 Cagliari, Italy; 3.Mansoura Univ, Fac Sci, Dept Bot, Mansoura 35516, Egypt
推荐引用方式 GB/T 7714	Abdelaal, Mohamed,Fois, Mauro,Fenu, Giuseppe,et al. Biogeographical characterisation of Egypt based on environmental features and endemic vascular plants distribution[J],2020,119.
APA	Abdelaal, Mohamed,Fois, Mauro,Fenu, Giuseppe,&Bacchetta, Gianluigi.(2020).Biogeographical characterisation of Egypt based on environmental features and endemic vascular plants distribution.APPLIED GEOGRAPHY,119.
MLA	Abdelaal, Mohamed,et al."Biogeographical characterisation of Egypt based on environmental features and endemic vascular plants distribution".APPLIED GEOGRAPHY 119(2020).