1. SUERC, Scottish Enterprise Technology Park, Rankine Avenue, East Kilbride G75 0QF, UK.
2. Department of Archaeology, Durham University, South Road, Durham DH1 3LE, UK.
3. Mývatn Research Station, Skútustaðir, Iceland and Institute of Biology and Environmental Sciences, University of Iceland, Reykjavik, Iceland.
4. Hunter Bioarchaeology Laboratory, Hunter College CUNY, New York, NY 10021, USA.
5. Institute of Geography, School of GeoSciences, University of Edinburgh, Drummond Street, Edinburgh EH9 8XP, UK.
6. Departments of Geography and Environment and Archaeology, University of Aberdeen, Elphinstone Road, Aberdeen AB24 3UF, UK.
7. St. Catherine's College, University of Oxford, Manor Road, Oxford OX1 3UJ, UK.