Alexis Roy

Alexis Roy is a Doctoral Researcher at the University of Paris-Saclay, affiliated with the Plant Ecophysiology team within the Department of Ecology, Society and Evolution. Their work focuses on the ecological impacts of climate change on wetlands in semi-arid environments, combining remote sensing and field-based methodologies.

Research interests center on climate change effects on water resources, dryland ecosystem dynamics, and remote sensing applications in southern Africa. Alexis employs Landsat satellite data and field experiments to analyze surface water fluctuations and their cascading effects on biodiversity and ecological interactions.

Their publications (2024–2025) investigate 40-year hydrological trends in southern African wetlands, emphasizing the role of remote sensing in tracking climate-induced changes. Key themes include dryland hydrology, ecosystem resilience, and geospatial monitoring.

Alexis supervises practical work in the Master 2 Ecological Approach to Landscape program at Paris-Saclay, guiding students in designing experiments on lotic aquatic systems. Prior to their PhD (since 2022), they worked as an Environmental Affairs Project Manager (2018–2020) at Total Group and completed a Master’s in Biodiversity, Ecology, Evolution at the same university in 2018.