About the Authors

Tianlong Cai

Affiliation College of Nature Conservation, Beijing Forestry University, Beijing, China

Falk Huettmann

Affiliation Ecological Wildlife and Habitat Analysis of the Land and Seascape Lab, Biology and Wildlife Department, Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, Alaska, United States of America

Yumin Guo

guoyumin@bjfu.edu.cn

Affiliations College of Nature Conservation, Beijing Forestry University, Beijing, China, College of Nature Conservation, Beijing Forestry University, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TC and YG. Performed the experiments: TC YG. Analyzed the data: FH TC. Wrote the paper: TC FH.