I am a biogeochemist and chemical oceanographer, interested in understanding nutrient cycling in the modern ocean, and the link between past climatic change, ocean circulation, nutrient supply and biological productivity.

I did my PhD at Oxford University, working on trace metal cycling in coastal Antarctic waters and was then awarded a Doherty Scholarship to work at Woods Hole Oceanographic Institution.

Throughout the last few years, I have worked on the stable isotopes of silicon in seawater, sediments and biogenic opal, a substance produced by some kinds of algae (diatoms), some protists (radiolarians, for example) and deep-sea sponges.

I currently have a number of projects working on silicon isotope biogeochemistry, including a European Research Council starting grant, ICY-LAB, and grants from the Royal Society. I am also part of the NERC funded Changing Arctic Ocean program.

I have been on many field expeditions, migrating further north every time, with trips (in order) to the Southern Ocean, the Equatorial Atlantic, and the Labrador Sea.