About the Authors

Mikael Sandberg

mikael.sandberg@hh.se

Affiliations Theoretical Population Ecology and Evolution Group, Department of Biology, Lund University, Lund, Sweden, School of Social and Health Sciences, Halmstad University, Halmstad, Sweden

Per Lundberg

Affiliation Theoretical Population Ecology and Evolution Group, Department of Biology, Lund University, Lund, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: MS PL. Wrote the paper: MS PL. Data transformation: MS. Principal component analysis: MS. Conceptualization: MS PL. Drafted text: MS. Analysis, editing, discussion: MS PL.