Dr. Sophie Martin is a postdoctoral scientist in the Marine Laboratory of Villefranche-sur-Mer in Southern France (Laboratoire d’Océanographie de Villefranche, CNRS and University of Paris VI). In 2005, she received a Ph. D. in biological oceanography from the University of Western Brittany, Brest, France. Her work concentrated on the functioning of benthic communities and their role on the nutrient, carbon and carbonate cycles in coastal ecosystems. She studied the role of an invasive mollusk, Crepidula fornicata, and an exploited coralline alga, maerl, on water-sediment interface fluxes in the Bay of Brest, France. Her recent work focuses on the response of temperate benthic calcifying organisms to global environmental changes. She especially studies the response of Mediterranean calcareous coralline algae to elevated CO2 partial pressure and temperature.