Alexandre K. Magnan is developing research on vulnerability and (mal)adaptation to climate and environmental change. He's working on coastal areas and small islands especially in the Indian Ocean (e.g., Reunion Island, Maldives, Mauritius) and in the Pacific (Kiribati, French Polynesia). He is particularly interested in "trajectories of vulnerability" (characterization of influencing factors and their interactions over time), the risk of maladaptation (typology, evaluation, case study) and adaptation pathways (guiding principles), as well as in the implementation of a Global Adaptation Goal by the international community.

Alexandre holds a doctorate in Geography (2005, University of Montpellier 3) and an Habilitation to supervise research (2018, University of La Rochelle).

He joined IDDRI in october 2007.

Alexandre is also member of the IPCC (Intergovernmental Panel on Climate Change - Working Group 2 "Impact, Vulnerability, Adaptation", Special Report on Oceans and Cryosphere, and Sixth Assessment Report).