I'm an environmental geochemist with an interest in nutrient, sulphur and metal cycling in the environment, and impacts on ecology and biodiversity. I use a range of laboratory and field techniques, including high resolution pore-water measurement (DET/DGT). Current work includes: - understanding the global phosphorus cycle - novel approaches to closing the phosphorus cycle - impact of natural flood attenuation schemes on nutrient cycling and macroinvertebrate communities in rivers - nutrient cycling and macroinvertebrate communities in ephemeral streams - impact of salinity on biogeochemical processes, microbial communities and macroinvertebrate biodiversity - sustainable approaches to remediation of crude oil spills