I lead the MicroLab@Bristol research group (www.microlabbristol.org) that specalises in the study of cold-adapted microbial communities and how they interact with their rapidly changing cryospheric environments. I am an expert in snow and glacier algae that bloom across the cryosphere during spring and summer melt seasons. My work includes a combination of field, laboratory and modelling approaches, and tends to link cell or community level (eco)physiology with broader-scale landscape processes and environmental change. As well as extensive work across arctic, alpine and antarctic environments, I also work closer to home on a series of freshwater and marine microalgal related projects.