干旱区生态环境知识资源中心(Arid): Mountains and their ecotones increase landscape heterogeneity and maintain a unique assemblage of grasshoppers in the southern Kalahari

Arid

DOI	10.1111/een.13217
	Mountains and their ecotones increase landscape heterogeneity and maintain a unique assemblage of grasshoppers in the southern Kalahari
	van Der Mescht, Aileen C. C.; Codron, Daryl
通讯作者	van der Mescht, AC
来源期刊	ECOLOGICAL ENTOMOLOGY
ISSN	0307-6946
EISSN	1365-2311
出版年	2023
卷号	48 期号:2 页码:226-239
英文摘要	1. South Africa is a megadiverse country. Here, natural communities are unevenly distributed across, and within, seven distinct biomes. In such heterogeneous landscapes, understanding spatial patterns of biodiversity is essential for planning and implementing efficient conservation measures. 2. The southern Kalahari, forming part of South Africa's savanna biome, is an arid region of peculiarly high diversity and endemism. The responses of orthopteran assemblages to changing environmental conditions across the Kalahari were investigated by comparing alpha and beta diversity levels across discrete vegetation types in the Tswalu Kalahari Reserve. The degree of association between species and specific vegetation types were also studied and how a key life history trait - dispersal ability - influences community composition was determined. 3. This study identified 46 grasshopper species within the reserve, which compares well with richness levels in other more productive habitats of the country. Local (alpha) diversity was higher in mountain and mountain-ecotone sites versus vegetation types on the plains, and species turnover was also exceptionally high - approaching 100% - across these two groups. The few (3) dispersal limited species recovered were associated only with the mountain-ecotone group, with emergent dominance patterns suggesting that competitive rather than dispersal abilities determine the species composition of unique assemblages in the landscape. 4. Topology plays a key role in maintaining spatial diversity across the southern Kalahari landscape. Mountains, and their ecotones, promote not only species turnover, but also richness and functional diversity. These can be viewed as islands of diversity, and should be targeted priority areas for conservation beyond the boundaries of protected areas.
英文关键词	arid environments community composition conservation diversity species distributions
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:000893920500001
WOS关键词	BETA-DIVERSITY ; SPECIES-DIVERSITY ; BIODIVERSITY ; CONSERVATION ; RESPONSES ; REGIONS ; ALPHA
WOS类目	Entomology
WOS研究方向	Entomology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395908
推荐引用方式 GB/T 7714	van Der Mescht, Aileen C. C.,Codron, Daryl. Mountains and their ecotones increase landscape heterogeneity and maintain a unique assemblage of grasshoppers in the southern Kalahari[J],2023,48(2):226-239.
APA	van Der Mescht, Aileen C. C.,&Codron, Daryl.(2023).Mountains and their ecotones increase landscape heterogeneity and maintain a unique assemblage of grasshoppers in the southern Kalahari.ECOLOGICAL ENTOMOLOGY,48(2),226-239.
MLA	van Der Mescht, Aileen C. C.,et al."Mountains and their ecotones increase landscape heterogeneity and maintain a unique assemblage of grasshoppers in the southern Kalahari".ECOLOGICAL ENTOMOLOGY 48.2(2023):226-239.