About the Authors

Joan Laur

laur@ualberta.ca

Affiliation Department of Renewable Resources, University of Alberta, 442 Earth Sciences Building, Edmonton, Alberta, Canada

Uwe G. Hacke

Affiliation Department of Renewable Resources, University of Alberta, 442 Earth Sciences Building, Edmonton, Alberta, Canada

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JL UGH. Performed the experiments: JL UGH. Analyzed the data: JL UGH. Contributed reagents/materials/analysis tools: JL UGH. Contributed to the writing of the manuscript: JL UGH.