About the Authors

Willy Tegel

tegel@dendro.de

Affiliation Institute for Forest Growth IWW, University of Freiburg, Freiburg, Germany

Rengert Elburg

Affiliation Archaeological Heritage Office Saxony, Dresden, Germany

Dietrich Hakelberg

Affiliation Institute for Forest Growth IWW, University of Freiburg, Freiburg, Germany

Harald Stäuble

Affiliation Archaeological Heritage Office Saxony, Dresden, Germany

Ulf Büntgen

Affiliations Swiss Federal Research Institute WSL, Birmensdorf, Switzerland, Oeschger Centre for Climate Change Research, Bern, Switzerland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: WT RE DH HS UB. Performed the experiments: RE WT. Analyzed the data: WT. Contributed reagents/materials/analysis tools: RE WT. Wrote the paper: WT DH UB RE HS.