Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jtbi.2017.10.001 |
Nonlocal grazing in patterned ecosystems | |
Siero, E. | |
通讯作者 | Siero, E. |
来源期刊 | JOURNAL OF THEORETICAL BIOLOGY
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ISSN | 0022-5193 |
EISSN | 1095-8541 |
出版年 | 2018 |
卷号 | 436页码:64-71 |
英文摘要 | Many ecosystems exhibit gapped, labyrinthine, striped or spotted patterns. Important examples are vegetation patterns in drylands: these patterns are viewed as precursors of a catastrophic transition to a degraded state. A possible source of degradation is overgrazing, but many current spatially extended models include grazing in a local linear way. In this article nonlocal grazing responses are derived, taking into account (1) how many consumers there are (demographic response) (2) where they are (aggregative response) and (3) how much they forage (functional response). Different assumptions lead to different grazing responses, the type of grazing has a large influence on how ecosystems adapt to changing environmental conditions. In dryland simulations the different types of grazing are shown to alter the desertification process driven by decreasing rainfall. A sufficiently strong aggregative response leads to the suppression of vegetation patterns, nuancing their role as generic early warning signals. (C) 2017 Elsevier Ltd. All rights reserved. |
英文关键词 | Spatial modelling Functional, demographic and aggregative response Overgrazing Land degradation Desertification Partial integro-differentiai equation |
类型 | Article |
语种 | 英语 |
国家 | Germany |
收录类别 | SCI-E |
WOS记录号 | WOS:000415662800007 |
WOS关键词 | VEGETATION PATTERNS ; BANDED VEGETATION ; SPATIAL-PATTERNS ; MOVEMENT ; PATCHINESS ; MECHANISMS ; GRADIENT ; DENSITY ; MODELS |
WOS类目 | Biology ; Mathematical & Computational Biology |
WOS研究方向 | Life Sciences & Biomedicine - Other Topics ; Mathematical & Computational Biology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/211385 |
作者单位 | Westfalische Wilhelms Univ Munster, Inst Numer & Angew Math, Einsteinstr 62, D-48149 Munster, Germany |
推荐引用方式 GB/T 7714 | Siero, E.. Nonlocal grazing in patterned ecosystems[J],2018,436:64-71. |
APA | Siero, E..(2018).Nonlocal grazing in patterned ecosystems.JOURNAL OF THEORETICAL BIOLOGY,436,64-71. |
MLA | Siero, E.."Nonlocal grazing in patterned ecosystems".JOURNAL OF THEORETICAL BIOLOGY 436(2018):64-71. |
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