Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2013.11.006 |
Spatial patterns provide support for the stress-gradient hypothesis over a range-wide aridity gradient | |
Ziffer-Berger, Jotham1; Weisberg, Peter J.2; Cablk, Mary E.3; Osem, Yagil4 | |
通讯作者 | Ziffer-Berger, Jotham |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS |
ISSN | 0140-1963 |
EISSN | 1095-922X |
出版年 | 2014 |
卷号 | 102页码:27-33 |
英文摘要 | We examined variations in the relative importance of facilitation vs. competition, in light of the Stress-Gradient Hypothesis (SGH) by assessing plant interactions along an aridity gradient over biogeographic scales. We surveyed the relationship between a shrub species (Artemisia tridentata) and pine seedlings (Pinus monophylla) across the Great Basin and the Mojave Desert, USA, encompassing the entire range of P. monophylla. Using 69 sites we evaluated the spatial association between P. monophylla seedlings and A. tridentata shrubs, quantified with an electivity index, and implemented multiple regression analysis on the effects of macro- and micro-environmental factors: precipitation, temperature, monsoonality index, topography, substrate and litter cover. We identified annual precipitation as a main factor, which was negatively related to shrub-seedling association. Additionally, shrub-seedling association was stronger in the hot- than in the cold-desert, and was negatively related to litter cover. Effects of monsoonality, summer temperature, and bedrock type were not significant. We also considered nonlinear functional forms of a precipitation electivity relationship, but the negative linear model proved most predictive. Our observations match SGH predictions. Studying the role of interspecific interactions in shaping species range shifts may lead to improved predictions of distribution ranges and changes in dryland vegetation under global change scenarios. (C) 2013 Elsevier Ltd. All rights reserved. |
英文关键词 | Artemisia tridentata Distribution range Facilitation Great Basin Mojave Desert Pinus monophylla Stress gradient |
类型 | Article |
语种 | 英语 |
国家 | Israel ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000332437800005 |
WOS关键词 | POSITIVE INTERACTIONS ; ARTEMISIA-TRIDENTATA ; PLANT INTERACTIONS ; ABIOTIC STRESS ; PINUS-MONOPHYLLA ; HYDRAULIC LIFT ; FACILITATION ; COMMUNITIES ; COMPETITION ; INSIGHTS |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | Hebrew University of Jerusalem ; Desert Research Institute |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/182992 |
作者单位 | 1.Hebrew Univ Jerusalem, Herbarium, Jerusalem, Israel; 2.Univ Nevada, Dept Nat Resources & Environm Sci, Reno, NV 89557 USA; 3.Univ Nevada, Desert Res Inst, Div Earth & Ecosyst Sci, Reno, NV 89506 USA; 4.Agr Res Org, Volcani Ctr, Inst Plant Sci, IL-50250 Bet Dagan, Israel |
推荐引用方式 GB/T 7714 | Ziffer-Berger, Jotham,Weisberg, Peter J.,Cablk, Mary E.,et al. Spatial patterns provide support for the stress-gradient hypothesis over a range-wide aridity gradient[J]. Hebrew University of Jerusalem, Desert Research Institute,2014,102:27-33. |
APA | Ziffer-Berger, Jotham,Weisberg, Peter J.,Cablk, Mary E.,&Osem, Yagil.(2014).Spatial patterns provide support for the stress-gradient hypothesis over a range-wide aridity gradient.JOURNAL OF ARID ENVIRONMENTS,102,27-33. |
MLA | Ziffer-Berger, Jotham,et al."Spatial patterns provide support for the stress-gradient hypothesis over a range-wide aridity gradient".JOURNAL OF ARID ENVIRONMENTS 102(2014):27-33. |
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