Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2013.10.016 |
Are semiarid shrubs resilient to drought and grazing? Differences and similarities among species and habitats in a long-term study | |
DeMalach, Niv1; Kigel, Jaime1; Voet, Hillary2; Ungar, Eugene D.3 | |
通讯作者 | DeMalach, Niv |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS |
ISSN | 0140-1963 |
EISSN | 1095-922X |
出版年 | 2014 |
卷号 | 102页码:1-8 |
英文摘要 | We assessed long-term effects of grazing cessation and drought on the shrub community of a semiarid ecosystem with a long history of grazing, located in the Mediterranean-to-desert transitional zone in Israel. Effects of grazing and drought on the cover of dominant (Sarcopoterium spinosum) and subdominant (Thymelaea hirsuta, Noaea mucronata and Coridothymus capitatus) shrubs were monitored during 12 years in four topographic habitats. With the exception of the toxic shrub T hirsuta, shrub cover increased by a few (at most five) percentage points soon after the establishment of fenced plots to prevent grazing, but the difference in cover between protected and grazed plots did not increase subsequently. Response of the woody vegetation cover to the drought pulse was more complex because it was affected by both species and habitat; it showed patterns of steady decrease, transient decrease, and transient increase. Recovery after the drought pulse was relatively slow, and total shrub cover did not return to its predrought level within 7 years. Varied responses to drought and grazing preclude consideration of shrubs as a single response group. The findings heighten concern for the stability of the ecosystem in light of the increasing frequency of dry seasons predicted by climate-change models. (C) 2013 Elsevier Ltd. All rights reserved. |
英文关键词 | Climate change Degradation Desertification Pulse-press dynamics Sarcopoterium spinosum Shrub encroachment |
类型 | Article |
语种 | 英语 |
国家 | Israel |
收录类别 | SCI-E |
WOS记录号 | WOS:000332437800001 |
WOS关键词 | SARCOPOTERIUM-SPINOSUM ; GLOBAL-CHANGE ; MEDITERRANEAN ECOSYSTEMS ; PRIMARY PRODUCTIVITY ; POPULATION-DYNAMICS ; CLIMATE-CHANGE ; RANGELAND ; ENCROACHMENT ; DESERTIFICATION ; MORTALITY |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | Hebrew University of Jerusalem |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/182987 |
作者单位 | 1.Hebrew Univ Jerusalem, Robert H Smith Fac Agr Food & Environm, Inst Plant Sci & Genet Agr, IL-76100 Rehovot, Israel; 2.Hebrew Univ Jerusalem, Robert H Smith Fac Agr Food & Environm, Dept Agr Econ & Management, IL-76100 Rehovot, Israel; 3.Agr Res Org, Volcani Ctr, Inst Plant Sci, Dept Agron & Nat Resources, IL-50250 Bet Dagan, Israel |
推荐引用方式 GB/T 7714 | DeMalach, Niv,Kigel, Jaime,Voet, Hillary,et al. Are semiarid shrubs resilient to drought and grazing? Differences and similarities among species and habitats in a long-term study[J]. Hebrew University of Jerusalem,2014,102:1-8. |
APA | DeMalach, Niv,Kigel, Jaime,Voet, Hillary,&Ungar, Eugene D..(2014).Are semiarid shrubs resilient to drought and grazing? Differences and similarities among species and habitats in a long-term study.JOURNAL OF ARID ENVIRONMENTS,102,1-8. |
MLA | DeMalach, Niv,et al."Are semiarid shrubs resilient to drought and grazing? Differences and similarities among species and habitats in a long-term study".JOURNAL OF ARID ENVIRONMENTS 102(2014):1-8. |
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