| Affiliation: | Department of Animal and Plant Sciences, The University of Sheffield, Sheffield S10 2TN, UK,;Abisko Scientific Research Station, Royal Swedish Academy of Sciences, S-98107, Abisko, Sweden,;Sheffield Centre for Arctic Ecology, The University of Sheffield, Sheffield S10 2TN, UK,;Institute of Terrestrial Ecology, Merlewood Research Station, Grange-over-Sands, Cumbria LA11 6JU, UK, and;Department of Plant Ecology, University of Copenhagen, Øster Farimagsgade 2 D, DK-1353 Copenhagen K, Denmark |
