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Regime shifts in a social-ecological system
2013 (English)In: Theoretical Ecology, ISSN 1874-1738, Vol. 6, no 3, 359-372 p.Article in journal (Refereed) Published
Abstract [en]

Ecological regime shifts are rarely purely ecological. Not only is the regime shift frequently triggered by human activity, but the responses of relevant actors to ecological dynamics are often crucial to the development and even existence of the regime shift. Here, we show that the dynamics of human behaviour in response to ecological changes can be crucial in determining the overall dynamics of the system. We find a social-ecological regime shift in a model of harvesters of a common-pool resource who avoid over-exploitation of the resource by social ostracism of non-complying harvesters. The regime shift, which can be triggered by several different drivers individually or also in combination, consists of a breakdown of the social norm, sudden collapse of co-operation and an over-exploitation of the resource. We use the approach of generalized modeling to study the robustness of the regime shift to uncertainty over the specific forms of model components such as the ostracism norm and the resource dynamics. Importantly, the regime shift in our model does not occur if the dynamics of harvester behaviour are not included in the model. Finally, we sketch some possible early warning signals for the social-ecological regime shifts we observe in the models.

Place, publisher, year, edition, pages
2013. Vol. 6, no 3, 359-372 p.
Keyword [en]
Regime shifts, Tipping points, Early warning signals, Bifurcation, Generalized modeling, social-ecological system
National Category
URN: urn:nbn:se:kth:diva-126880DOI: 10.1007/s12080-013-0187-3ISI: 000322022400010ScopusID: 2-s2.0-84880698648OAI: diva2:642817
EU, FP7, Seventh Framework Programme, 283950 SES-LINKMistra - The Swedish Foundation for Strategic Environmental Research

QC 20130823

Available from: 2013-08-23 Created: 2013-08-22 Last updated: 2013-08-23Bibliographically approved

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Lade, Steven J.
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