Affiliation: | 1. Department of Biology, University of Eastern Finland, , Joensuu, Finland;2. Department of Ecology, Environment and Plant Sciences, Stockholm University, , Stockholm, Sweden;3. Department of Biological and Environmental Science, University of Jyv?skyl?, , Jyv?skyl?, Finland;4. Lammi Biological Station, University of Helsinki, , Lammi, Finland;5. University of Washington Civil and Environmental Engineering, , Seattle, WA, U.S.A |