Joelisoa Ratsirarson is a Professor of Ecology and Biodiversity at the Forestry Department of the School of Agronomy (ESSA) of the University of Antananarivo, Madagascar. He is the Board Chair of the Tany Meva Foundation and former Vice President of the University. His research interest is mainly focused an biodiversity conservation and monitoring, including conservation policy and governance. He is also studying the impact of environmental change, including climate change and deforestation on biodiversity resilience in Madagascar, especially in the southwest such as Bezà Mahafaly. He has worked on the population dynamics of rare, endangered and invasive species, mainly in Madagascar.