| Managing ecological thresholds in coupled environmental-human systems. | |
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MedLine Citation:
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PMID: 21502517 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Many ecosystems appear subject to regime shifts--abrupt changes from one state to another after crossing a threshold or tipping point. Thresholds and their associated stability landscapes are determined within a coupled socioeconomic-ecological system (SES) where human choices, including those of managers, are feedback responses. Prior work has made one of two assumptions about managers: that they face no institutional constraints, in which case the SES may be managed to be fairly robust to shocks and tipping points are of little importance, or that managers are rigidly constrained with no flexibility to adapt, in which case the inferred thresholds may poorly reflect actual managerial flexibility. We model a multidimensional SES to investigate how alternative institutions affect SES stability landscapes and alter tipping points. With institutionally dependent human feedbacks, the stability landscape depends on institutional arrangements. Strong institutions that account for feedback responses create the possibility for desirable states of the world and can cause undesirable states to cease to exist. Intermediate institutions interact with ecological relationships to determine the existence and nature of tipping points. Finally, weak institutions can eliminate tipping points so that only undesirable states of the world remain. |
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Authors:
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Richard D Horan; Eli P Fenichel; Kevin L S Drury; David M Lodge |
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Publication Detail:
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Type: Journal Article Date: 2011-04-18 |
Journal Detail:
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Title: Proceedings of the National Academy of Sciences of the United States of America Volume: 108 ISSN: 1091-6490 ISO Abbreviation: Proc. Natl. Acad. Sci. U.S.A. Publication Date: 2011 May |
Date Detail:
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Created Date: 2011-05-04 Completed Date: 2011-07-15 Revised Date: 2011-07-28 |
Medline Journal Info:
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Nlm Unique ID: 7505876 Medline TA: Proc Natl Acad Sci U S A Country: United States |
Other Details:
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Languages: eng Pagination: 7333-8 Citation Subset: IM |
Affiliation:
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Department of Agricultural, Food, and Resource Economics, Michigan State University, East Lansing, MI 48824-1039, USA. horan@msu.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Astacoidea / physiology Bass / physiology Conservation of Natural Resources / methods* Ecology / methods* Ecosystem* Environment* Fisheries / methods Humans Models, Theoretical* Public Policy* Socioeconomic Factors |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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