干旱区生态环境知识资源中心(Arid): Patterns of bird species richness at two sampling scales in the Karoo biome of South Africa

Arid

DOI	10.1016/j.jaridenv.2019.104077
	Patterns of bird species richness at two sampling scales in the Karoo biome of South Africa
	Lee, Alan Tristram Kenneth 1,2; Wright, Dale R.3
通讯作者	Lee, Alan Tristram Kenneth
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2020
卷号	174
英文摘要	Species richness has become the common currency of studies of biodiversity. Here we consider measures of species richness for the birds of the arid Karoo region of South Africa. We measured species richness at two scales: at the broad-scale using pentads (5 x 5'); and at the fine scale, using point counts to determine important landscape features. Point counts within randomly selected pentads were conducted throughout the two biomes that comprise the Karoo (Succulent and Nama). Features at points were used to model covariates of species richness at the fine scale, while the total number of unique species from counts was used as the dependent variable at the broad scale. We considered determinants of total species richness; and the subset of ten bird species endemic to the Karoo. Finally, we modelled covariates of presence for 100 of the most common bird species. We found increasing vegetation height and decreasing sand-cover best explain total species richness, while lower Prosopis sp cover and increasing altitude explained endemic species richness at the broad scale. At the finer scale, presence of water and farmsteads were associated with highest general species richness, but with lower numbers of endemics. The presence of water, a 'green' score, sand cover and topography were identified as the most important variables explaining presence of individual species, but often with contrasting effects between species. We conclude that patterns of endemic bird species richness were explained by different variables compared to total species richness. We expect this information will inform landholders, wildlife managers and conservation practitioners in this unique arid zone environment.
英文关键词	Karroo Macroecology Spatial ecology Agriculture Land degradation Invasive alien species African ornithology Endemism Biodiversity
类型	Article
语种	英语
国家	South Africa
收录类别	SCI-E
WOS记录号	WOS:000508745900006
WOS关键词	DRAINAGE LINE WOODLAND ; DENSITY ; IMPACT
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314878
作者单位	1.Univ KwaZulu Natal, Sch Life Sci, Ctr Funct Biodivers, Private Bag X01, ZA-3209 Scottsville, South Africa; 2.Univ Cape Town, Fitzpatrick Inst African Ornithol, ZA-7701 Rondebosch, South Africa; 3.BirdLife South Africa, Ctr Biodivers Conservat, Kirstenbosch Bot Gardens, Room A08,Rhodes Ave, ZA-7700 Cape Town, South Africa
推荐引用方式 GB/T 7714	Lee, Alan Tristram Kenneth,Wright, Dale R.. Patterns of bird species richness at two sampling scales in the Karoo biome of South Africa[J],2020,174.
APA	Lee, Alan Tristram Kenneth,&Wright, Dale R..(2020).Patterns of bird species richness at two sampling scales in the Karoo biome of South Africa.JOURNAL OF ARID ENVIRONMENTS,174.
MLA	Lee, Alan Tristram Kenneth,et al."Patterns of bird species richness at two sampling scales in the Karoo biome of South Africa".JOURNAL OF ARID ENVIRONMENTS 174(2020).