Affiliation: | 1. Interdisciplinary Centre for General Ecology (IKAÖ), University of Bern, Schanzeneckstr. 1, Postfach 8573, 3001 Bern, Switzerland1;2. Dynamics of Innovative Systems (DIS), Paul Scherrer Institute, Villigen, Switzerland2;3. Oekozentrum Langenbruck, Schwengiweg 12, 4438 Langenbruck, Switzerland3 |