Affiliation: | Institute of Ecology, University of Jena, Dornburger Straße 159, 07743 Jena, Germany, Max Planck Institute for Biogeochemistry, POB 100164, D-07701 Jena, Germany, and;Department of Experimental and Systems Ecology, University of Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany |