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Nick is Admissions Tutor at Churchill College; he is also College Lecturer in Geography at Trinity College. He is a physical geographer specialising in ecosystem development, with a special interest in high-latitude regions. His research focuses on spatial and temporal variation in terrestrial ecosystems. He did his PhD at the University of Edinburgh, investigating long-term (decades–centuries) ecological change on lava flows in Iceland. He subsequently worked on ecological development at smaller spatiotemporal scales, studying the colonisation of historic building stone by microorganisms at the University of Oxford. His current research looks at spatial variation in high-latitude soil microbial communities, using molecular (DNA) techniques.