1 Department of Geosciences and Geography, University of Helsinki, P.O. Box 64, FI-00014, Helsinki, Finland, and Helsinki Institute for Information Technology HIIT, Aalto University, P.O. Box 15400, FI-00076 Aalto, Finland. Electronic address: indre.zliobaite@helsinki.fi.
2 Centre for Ecological and Evolutionary Synthesis (CEES), Department of Biosciences, University of Oslo, P.O. Box 1066, Blindern, NO-0316, Oslo, Norway. Electronic address: n.c.stenseth@ibv.uio.no.