About the Authors

Ruth H. Thurstan

Affiliation Environment Department, University of York, York, United Kingdom

Callum M. Roberts

cr10@york.ac.uk

Affiliation Environment Department, University of York, York, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RT CR. Analyzed the data: RT CR. Wrote the paper: RT CR.