Lauric THIAULT

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Post Doctorant
Centre National de la Recherche Scientifique (CNRS)
Doctorant : Université de Pierre et Marie Curie
Ecole Doctorale Sciences de la Nature et de l'Homme (ED 227)

CRIOBE - Moorea
Centre de Recherche Insulaire et Observatoire de l'Environnement (CRIOBE)
BP 1013 Moorea
98729 Polynésie Française

Tel: +689 40 56 13 45
Email:

Domaines de Recherche:

  • Pêches artisanales
  • Systèmes socio-écologiques
  • Vulnerabilité
  • Gagnants et perdants de la conservation
  • Modélisation

Selected Citations

  • Thiault, L., Kernaléguen, L., Osenberg, C.W., Claudet, J., in prep. Progressive-Change BACIPS: a flexible approach for environmental impact assessment.
  • Thiault, L., Bevilacqua, S., Terlizzi, A., Claudet, J., 2015. Taxonomic relatedness does not reflect coherent ecological response of fish to protection. Biol. Conserv. 190, 98–106.
  • Thiault, L. 2014. Evaluation écologique d’un réseau d'aires marines protégées : application au Plan de Gestion de l'Espace Maritime (PGEM) de Moorea.

Biographie

J’ai grandi sur l’île de Raiatea, en Polynésie française. J’ai obtenu un Master en Bioressources Aquatiques en Environnement Méditerranéen et Tropical de l’Université Montpellier 2 en 2013. Mes travaux de recherche consistaient initialement à développer des méthodes d’évaluation et de suivi des Aires Marines Protégées (AMP), mais je me tourne aujourd’hui vers des approches multidisciplinaires pour améliorer la gestion des zones côtières. Mon intérêt pour cette dernière thématique a débuté lors du stage que j’ai effectué au CRIOBE, sous la direction de Joachim Claudet, sur l’évaluation écologique du réseau d’AMP de l’île de Moorea. J’ai alors constaté à quel point l’homme et l’environnement étaient intimement liés et réalisé l’importance d’intégrer à la fois les aspects écologiques et sociaux dans la planification de la conservation. Mon projet de thèse vise à étudier l’effet de différents outils de gestion mis en place en Polynésie française et au Chili sur la vulnérabilité des ressources marines et des usagers de ces ressources. Réussir à lier les concepts et méthodes utilisés en sciences naturelle et humaine constitue un défi majeur de ce projet. Pour cela, je combine des théories et des données écologiques et sociales au travers de techniques de modélisation statistique et informatique.

Soutenance de Doctorat | 30 Septembre 2017

Titre: Vulnérabilité socio-écologique: de l’évaluation à l’action
Résume: Contemporary sustainability science and practice must embrace the complexity of social-ecological systems and capitalize on the lessons learned from the recent theoretical and applied advances made in various disciplines. This can be accomplished in particular by incorporating this extensive knowledge into management and decision making through integrative and operational frameworks. Based on contrasting but complementary case studies (coral reef fishery in Moorea, French Polynesia; artisanal benthic fishery in Chile; global food systems), and drawing from the recent development in social-ecological science, I extended the use of the social-ecological vulnerability framework by (1) mapping human-nature dependencies in the context of resource-user interactions, (2) integrating the temporal dimension, (3) accounting for multiple drivers of change and (4) their impact on diverse entities of the system considered. Specifically, based on the Progressive-Change BACIPS approach in Moorea (Chapter I), I show that the current marine spatial planning has unlikely contributed to improve ecological outcomes, thus casting doubts on its capacity to meet its conservation and fishery management objectives. In Chapter II, I showed how the use of mixed methods combining different data sources allowed us to map fishing effort in the challenging context of Moorea where fishing is diffuse among inhabitants and along the coast. Using this information within a vulnerability framework (Chapter III) I mapped resource-user interdependencies, to highlight focal areas for management interventions in Moorea. Then I developed a framework combining spatial social and ecological vulnerabilities to recommend interventions portfolio in those focal areas, specifically targeting each social and ecological conditions within each management spatial unit. In Chapter V I showed how vulnerability assessments in two different times can be used to capture combined changes in social-ecological systems in response to direct and indirect drivers. This approach precluded me to identify the specific response of the social-ecological system to each of the drivers, therefore, in Chapter VI, I developed a framework to disentangle the effect of direct and indirect drivers on the vulnerability of fishing communities involved in the management of common-pool resources through TURFs. Finally, I assessed in Chapter VII how countries are vulnerable to the effects of climate change on agriculture and fisheries globally to show how vulnerability assessments can be suited in a cross-sectorial management context. This interdisciplinary work provided the foundation to represent key linkages in social-ecological systems, understand the underlying sources of unsustainability, and address these through a set of targeted and context-grounded management interventions and policy actions. This thesis provides a new perspective on human-nature linkages and has a number practical implications for managers, conservation planners, and policy-makers that seek to incorporate a social-ecological perspective to tackle sustainability issues from local to global scales.

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