Dr. Estelle Crochelet’s research focuses on marine ecology, biodiversity conservation, and sustainable management of tropical and island ecosystems in the Western Indian Ocean. As a Marine Ecologist at the Biodiversity Research Agency of Réunion Island (ARBRE), she integrates field ecology, molecular analysis, and spatial modeling to study coral reef systems, mesophotic ecosystems, and species connectivity. Her pioneering application of environmental DNA (eDNA) techniques has transformed biodiversity monitoring by enabling the detection of rare and cryptic species such as sharks and rays, advancing ecosystem-based management and conservation planning. Through leadership roles in major initiatives including the IRRAE, MAEO, and CONCILIER programs, Dr. Crochelet has contributed to integrated coral reef management, linking ecological research with territorial planning and policy implementation. Her interdisciplinary work, combining marine biology, remote sensing, and ecological modeling, has generated valuable insights into habitat connectivity, reef resilience, and marine spatial planning. Collaborating with organizations such as IUCN, IRD, and the French Biodiversity Office, she has played a vital role in shaping regional conservation strategies and advancing scientific understanding of marine ecosystems. Widely published in prestigious journals such as Nature, Science, Environmental DNA, and Deep Sea Research, Dr. Crochelet’s work has global relevance, addressing the challenges of biodiversity loss and climate impacts on marine environments. Alongside her scientific achievements, she mentors emerging researchers, leads citizen science initiatives, and promotes public awareness of ocean conservation. A certified professional diver, rebreather user, and drone pilot, she combines technical field expertise with innovative research approaches, making significant contributions to sustainable marine governance and biodiversity preservation in the Southwestern Indian Ocean.
Profiles : Scopus | ORCID
Featured Publications
Crochelet, E., Desbonnes, O., Inçaby, L., Nazurally, N., Stevens, G., van Beuningen, D., Gadenne, J., Morand, G., Bertrand, G., & Nikolic, N. (2025). Biodiversity and conservation of elasmobranchs in the Mascarene Islands: Policy implementation and protection strategies. Ocean & Coastal Management, 262, 107921.
Crochelet, E., Barrier, N., Andrello, M., Marsac, F., Spadone, A., & Lett, C. (2020). Connectivity between seamounts and coastal ecosystems in the Southwestern Indian Ocean. Deep-Sea Research Part II: Topical Studies in Oceanography, 180, 104774.
Bourjon, P., Crochelet, E., & Fricke, R. (2019). First record of the large caerulean damselfish, Pomacentrus caeruleopunctatus (Actinopterygii: Perciformes: Pomacentridae), from Réunion Island, southwest Indian Ocean. Acta Ichthyologica et Piscatoria, 49(3), 293–297.
Queiroz, N., Humphries, N. E., Couto, A., Vedor, M., da Costa, I., Sequeira, A. M. M., Mucientes, G., Santos, A. M., Abascal, F. J., Abercrombie, D. L., et al. (2019). Global spatial risk assessment of sharks under the footprint of fisheries. Nature, 572(7770), 461–466.
Soria, M., Heithaus, M. R., Blaison, A., Crochelet, E., Forget, F., & Chabanet, P. (2019). Residency and spatial distribution of bull sharks Carcharhinus leucas in and around Réunion Island marine protected area. Marine Ecology Progress Series, 626, 85–97.
Dr. Estelle Crochelet’s research advances global marine conservation through innovative studies on elasmobranch ecology, connectivity, and policy implementation across the Mascarene and Western Indian Ocean. Her work bridges ecological modeling, spatial management, and biodiversity protection—informing sustainable fisheries, strengthening marine protected areas, and shaping evidence-based conservation strategies that safeguard ocean ecosystems and coastal livelihoods worldwide.