Institution: | Adaptive Dynamics Network, International Institute for Applied Systems Analysis, A-2361 Laxenburg, Austria,;University of Oslo, Department of Zoology, P. O. Box 1050 Blindern, N-0316 Oslo, Norway,;Institute of Marine Research, P. O. Box 1870 Nordnes, N-5187 Bergen, Norway,;University of Helsinki, Department of Ecology and Systematics, FIN-00014 Helsinki, Finland and;Norwegian University of Science and Technology, Trondhjem Biological Station, N-7034 Trondheim, Norway |