Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/ele.12027 |
Emerged or imposed: a theory on the role of physical templates and self-organisation for vegetation patchiness | |
Sheffer, Efrat1; von Hardenberg, Jost2; Yizhaq, Hezi3; Shachak, Moshe4; Meron, Ehud5,6 | |
通讯作者 | Sheffer, Efrat |
来源期刊 | ECOLOGY LETTERS |
ISSN | 1461-023X |
EISSN | 1461-0248 |
出版年 | 2013 |
卷号 | 16期号:2页码:127-139 |
英文摘要 | In this article, we develop a unifying framework for the understanding of spatial vegetation patterns in heterogeneous landscapes. While much recent research has focused on self-organised vegetation the prevailing view is still that biological patchiness is mostly due to top-down control by the physical landscape template, disturbances or predators. We suggest that vegetation patchiness in real landscapes is controlled both by the physical template and by self-organisation simultaneously, and introduce a conceptual model for the relative roles of the two mechanisms. The model considers four factors that control whether vegetation patchiness is emerged or imposed: soil patch size, plant size, resource input and resource availability. The last three factors determine the plant-patch size, and the plant-to-soil patch size ratio determines the impact of self-organisation, which becomes important when this ratio is sufficiently small. A field study and numerical simulations of a mathematical model support the conceptual model and give further insight by providing examples of self-organised and template-controlled vegetation patterns co-occurring in the same landscape. We conclude that real landscapes are generally mixtures of template-induced and self-organised patchiness. Patchiness variability increases due to sourcesink resource relations, and decreases for species of larger patch sizes. |
英文关键词 | Drylands landscape patch size patchiness Poa bulbosa L scale self-organisation template induced vegetation pattern formation |
类型 | Article |
语种 | 英语 |
国家 | Israel ; Italy |
收录类别 | SCI-E |
WOS记录号 | WOS:000313722900001 |
WOS关键词 | PATTERN-FORMATION ; ARID ECOSYSTEMS ; DYNAMICS ; SOIL ; LANDSCAPES ; WATER ; MECHANISMS ; SYSTEMS ; SCALES ; ISRAEL |
WOS类目 | Ecology |
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/2XILL650/176767 |
作者单位 | 1.Hebrew Univ Jerusalem, Fac Agr Food & Environm Qual Sci, Robert H Smith Inst Plant Sci & Genet Agr, IL-76100 Rehovot, Israel; 2.ISAC CNR, I-10133 Turin, Italy; 3.Ben Gurion Univ Negev, Blaustein Inst Desert Res, Dept Energy & Environm Phys, IL-84990 Sede Boqer, Israel; 4.Ben Gurion Univ Negev, Blaustein Inst Desert Res, Mitrani Dept Desert Ecol, IL-84990 Sede Boqer, Israel; 5.Ben Gurion Univ Negev, Blaustein Inst Desert Res, Dept Solar Energy & Environm Phys, IL-84990 Sede Boqer, Israel; 6.Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel |
推荐引用方式 GB/T 7714 | Sheffer, Efrat,von Hardenberg, Jost,Yizhaq, Hezi,et al. Emerged or imposed: a theory on the role of physical templates and self-organisation for vegetation patchiness[J],2013,16(2):127-139. |
APA | Sheffer, Efrat,von Hardenberg, Jost,Yizhaq, Hezi,Shachak, Moshe,&Meron, Ehud.(2013).Emerged or imposed: a theory on the role of physical templates and self-organisation for vegetation patchiness.ECOLOGY LETTERS,16(2),127-139. |
MLA | Sheffer, Efrat,et al."Emerged or imposed: a theory on the role of physical templates and self-organisation for vegetation patchiness".ECOLOGY LETTERS 16.2(2013):127-139. |
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