Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.baae.2005.08.003 |
Annual plant-shrub interactions along an aridity gradient | |
Holzapfel, Claus; Tielboerger, Katja; Parag, Hadas A.; Kigel, Jaime; Sternberg, Marcelo | |
通讯作者 | Tielboerger, Katja |
来源期刊 | BASIC AND APPLIED ECOLOGY
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ISSN | 1439-1791 |
EISSN | 1618-0089 |
出版年 | 2006 |
卷号 | 7期号:3页码:268-279 |
英文摘要 | Annual plants in semi-arid and and areas are often closely associated with shrubs. The degree of association largely depends on the balance of negative and positive effects between these contrasting plant life-forms, ranging from interference to facilitation. Since positive interactions are predicted to become less important with increasing rainfall, the interaction balance is expected to shift along aridity gradients. However, this prediction has not been tested on a community level. and for different life-history stages across large geographical gradients. Here, we show such changes for annual plant populations and communities in four contrasting sites along a steep climatic gradient, ranging from the and desert to mesic Mediterranean regions in Israel.. Above-ground productivity, richness, seedling density, and seed bank density of the annual plant community, as well as fecundity of annual plant populations, were generally higher under shrubs than in areas between shrubs at the and end of the gradient, but significantly lower at the humid end. Net effects of shrubs on annuals expressed as relative interaction intensity indicated a steady and consistent shift from net positive or neutral effects in the desert to net negative effects in the mesic part of the gradient. These findings emphasize the usefulness of studies along large-scale gradients encompassing a wide range of environmental conditions for understanding community level interactions among coexisting species. (c) 2005 Gesellschaft fur Okologie. Published by Elsevier GmbH. All rights reserved. |
英文关键词 | annuals shrubs desert Mediterranean facilitation competition environmental gradient climatic gradient life stage rainfall |
类型 | Article |
语种 | 英语 |
国家 | Germany ; Israel |
收录类别 | SCI-E |
WOS记录号 | WOS:000237585300008 |
WOS关键词 | MEDITERRANEAN-DESERT GRADIENT ; POSITIVE INTERACTIONS ; MARSH PLANTS ; FACILITATION ; COMPETITION ; STRESS ; COMMUNITIES ; GROWTH ; INTERFERENCE ; PRODUCTIVITY |
WOS类目 | Ecology |
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/2XILL650/150865 |
作者单位 | (1)Univ Tubingen, Inst Bot, Dept Plant Ecol, D-72076 Tubingen, Germany;(2)Tel Aviv Univ, Dept Plant Sci, IL-69978 Tel Aviv, Israel;(3)Hebrew Univ Jerusalem, Fac Agr Food & Environm Qual Sci, RH Smith Inst Plant Sci & Genet Agr, IL-76100 Rehovot, Israel |
推荐引用方式 GB/T 7714 | Holzapfel, Claus,Tielboerger, Katja,Parag, Hadas A.,et al. Annual plant-shrub interactions along an aridity gradient[J]. Hebrew University of Jerusalem,2006,7(3):268-279. |
APA | Holzapfel, Claus,Tielboerger, Katja,Parag, Hadas A.,Kigel, Jaime,&Sternberg, Marcelo.(2006).Annual plant-shrub interactions along an aridity gradient.BASIC AND APPLIED ECOLOGY,7(3),268-279. |
MLA | Holzapfel, Claus,et al."Annual plant-shrub interactions along an aridity gradient".BASIC AND APPLIED ECOLOGY 7.3(2006):268-279. |
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