About the Authors

Marijke N. de Boer

marijke.deboer@wur.nl

Affiliations Department of Ecosystems, Institute for Marine Resources and Ecosystem Studies, Wageningen UR, Den Burg, The Netherlands, Department of Aquatic Ecology and Waterquality Management, Wageningen University, Wageningen, The Netherlands

Mark P. Simmonds

Affiliation Science Department, Whale and Dolphin Conservation, Chippenham, Wiltshire, United Kingdom

Peter J. H. Reijnders

Affiliations Department of Ecosystems, Institute for Marine Resources and Ecosystem Studies, Wageningen UR, Den Burg, The Netherlands, Department of Aquatic Ecology and Waterquality Management, Wageningen University, Wageningen, The Netherlands

Geert Aarts

Affiliations Department of Ecosystems, Institute for Marine Resources and Ecosystem Studies, Wageningen UR, Den Burg, The Netherlands, Department of Aquatic Ecology and Waterquality Management, Wageningen University, Wageningen, The Netherlands

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MDB MPS. Performed the experiments: MDB MPS. Analyzed the data: MDB GMA. Wrote the paper: MDB MPS PJHR GMA. Were allowed access to the Island by the Bardsey Island Trust: MDB MPS.