1. Environmental Studies Program Wellesley College 106 Central Street Wellesley MA 02481 USA
2. ARC Centre of Excellence for Environmental Decisions The University of Queensland School of Biological Sciences Brisbane Qld 4072 Australia
3. Evolutionary Biodemography Laboratory Max Planck Institute for Demographic Research Konrad‐Zuse‐Strasse 1 16 Rostock DE‐18057 Germany
4. Department of Ecology and Evolutionary Biology University of Connecticut 75 North Eagleville Road Storrs CT 06269‐3043 USA
5. Smithsonian Environmental Research Center P647 Contees Wharf Road Edgewater MD 21037‐0028 USA