干旱区生态环境知识资源中心(Arid): Hyper-arid tall shrub species have differing long-term responses to browsing management

Arid

DOI	10.1080/15324982.2019.1605631
	Hyper-arid tall shrub species have differing long-term responses to browsing management
	Gallacher, David J.1; Khafaga, Tamer 2,3
通讯作者	Gallacher, David J.
来源期刊	ARID LAND RESEARCH AND MANAGEMENT
ISSN	1532-4982
EISSN	1532-4990
出版年	2020
卷号	34 期号:1 页码:99-116
英文摘要	Hyper-arid rangeland vegetation is typically dominated by large woody species which are often overlooked in herbivory studies. Long-term responses of tall shrub populations to herbivory change are poorly understood in the Arabian Peninsula. Population and size of 1559 individuals from four shrub species were assessed over an 11-year period under two herbivory regimes, one in which domestic livestock (camels) were replaced by semi-wild ungulates (Oryx and gazelles) before, and the other during, the study period. Each shrub species exhibited a different response to the change in herbivory. Populations of Calotropis procera decreased dramatically. Populations of both Calligonum polygonoides and Lycium shawii increased through sexual reproduction, but the spatial distribution of recruits indicated different modes of seed dispersal. Average lifespans were estimated at 22 and 20 years respectively. The persistence strategy of Leptadenia pyrotechnica was similar to tree species of this habitat in that vegetative regrowth was prioritized over recruitment, and average lifespan was estimated at 95 years. Shrub responses to changes in ungulate management are therefore species-specific. The response of individual plant size was faster than the response of population size, which was limited by slow sexual recruitment (L. pyrotechnica) or localized seed dispersal (C. polygonoides).
英文关键词	Arid rangeland gazelle grazing impact grazing recovery Oryx leucoryx
类型	Article
语种	英语
国家	U Arab Emirates ; Spain
收录类别	SCI-E
WOS记录号	WOS:000471476400001
WOS关键词	LEPTADENIA-PYROTECHNICA ; RANGELAND DEGRADATION ; DESERT ; PLANTS ; DIVERSITY ; GERMINATION ; VEGETATION ; DISPERSAL ; LONGEVITY ; LIVESTOCK
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/2XILL650/214401
作者单位	1.Zayed Univ, Dept Interdisciplinary Studies, POB 19282, Al Ruwayyah, Dubai, U Arab Emirates; 2.Univ Malaga, Fac Ciencias, Div Biol & Medio Ambiente, Malaga, Spain; 3.Dubai Desert Conservat Reserve, Dubai, U Arab Emirates
推荐引用方式 GB/T 7714	Gallacher, David J.,Khafaga, Tamer. Hyper-arid tall shrub species have differing long-term responses to browsing management[J],2020,34(1):99-116.
APA	Gallacher, David J.,&Khafaga, Tamer.(2020).Hyper-arid tall shrub species have differing long-term responses to browsing management.ARID LAND RESEARCH AND MANAGEMENT,34(1),99-116.
MLA	Gallacher, David J.,et al."Hyper-arid tall shrub species have differing long-term responses to browsing management".ARID LAND RESEARCH AND MANAGEMENT 34.1(2020):99-116.