About the Authors

Roger S. Thorpe, Yann Surget-Groba, Helena Johansson
School of Biological Sciences, Bangor University, Bangor, United Kingdom

Corresponding Author


Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RST. Performed the experiments: YSG HJ. Analyzed the data: RST YSG HJ. Wrote the paper: RST YSG. Contributed to field work and data analysis: RST. Carried out the field work, laboratory work and data analysis: YSG. Carried out all aspects of the work on the NE transects: HJ.