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Large-N comparative studies have helped common pool resource scholars gain general insights into the factors that influence collective action and governance outcomes. However, these studies are often limited by missing data, and suffer from the methodological limitation that important information is lost when we reduce textual information to quantitative data. This study was motivated by nine case studies that appeared to be inconsistent with the expectation that the presence of Ostrom's Design Principles increases the likelihood of successful common pool resource governance. These cases highlight the limitations of coding and analysing Large-N case studies. We examine two issues: 1) the challenge of missing data and 2) potential approaches that rely on context (which is often lost in the coding process) to address inconsistencies between empirical observations theoretical predictions. For the latter, we conduct a post-hoc qualitative analysis of a large-N comparative study to explore 2 types of inconsistencies: 1) cases where evidence for nearly all design principles was found, but available evidence led to the assessment that the CPR system was unsuccessful and 2) cases where the CPR system was deemed successful despite finding limited or no evidence for design principles. We describe inherent challenges to large-N comparative analysis to coding complex and dynamically changing common pool resource systems for the presence or absence of design principles and the determination of "success". Finally, we illustrate how, in some cases, our qualitative analysis revealed that the identity of absent design principles explained inconsistencies hence de-facto reconciling such apparent inconsistencies with theoretical predictions. This analysis demonstrates the value of combining quantitative and qualitative analysis, and using mixed-methods approaches iteratively to build comprehensive methodological and theoretical approaches to understanding common pool resource governance in a dynamically changing context.

This presentation will present the SETER project. For the last twenty years, different research units participating in this project have been developing research activities on socio-ecological systems aiming at understanding relationships between agriculture and biodiversity, policies and landscapes dynamics, watershed management, ecosystem management and health risk, etc. At the same time, diverse schools of thought have developed theories and frameworks to analyse the dynamics and management of socio-ecological systems (Resilience,Vulnerability, Political ecology). The objective of this project is to assess the relevance and the complementarities of these theoretical frameworks by applying and testing them in the case of four empirical research case studies (Wetlands of the Rhone river delta, Locust control in Sahelian region, Multiple uses of Sahelian ecosystems, Management of Bemisia-phytovirus risk.) The lessons from this project will also provide the basis for new conceptualisations of socio-ecological systems dynamics and management. During summer 2009 senior researchers (Lance Gunderson, Allyson Quinlan, Colin Polsky, Marco Janssen, Paul Robbins, Nancy Peluso, Tom Bassett, Tor Benjaminssen) were hosted in Montpellier (France) for a common stay during which they interacted among them and with the participating units in Montpellier. Each case study was analysed from a different angle leading to progress in the understanding of the dynamics and management of the socio-ecological system under study. The different view points were discussed. This paper will present the preliminary results of this scientific dialog. (Texte intégral)