Patrick MARTIN


I am interested in the cycling of carbon and nutrient elements in the oceans, and in the impact of environmental changes on these processes. Currently, I am studying isotopes of boron and carbon in coral skeletons to reconstruct past seawater pH, which is important for an accurate understanding of the carbon cycle. I am also interested in downward particle fluxes in the ocean, which are a critical but poorly understood sink in the global carbon cycle. Carbon cycling in the ocean is intimately linked to the cycling of nutrient elements, and I am particularly interested in the importance of phosphorus recycling, and the role of polyphosphates in marine phosphorus biogeochemistry. Moreover, I am interested in how the micronutrient iron affects the amount of the downward particle flux, and participated in the latest artificial open-ocean iron fertilisation experiment, LOHAFEX.