Articles | Volume 75, issue 2
https://doi.org/10.5194/egqsj-75-163-2026
https://doi.org/10.5194/egqsj-75-163-2026
Express report
 | 
28 Jul 2026
Express report |  | 28 Jul 2026

Tree growth at the beginning of the Holocene at an elevation of 2150 m in the Engadin Valley, Switzerland

Christian Schlüchter, Leo Hösli, Kurt Nicolussi, Christoph Korte, and Irka Hajdas

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Cited articles

Ivy-Ochs, S., Schlüchter, C., Kubik, P. W., Synal, H. A., Beer., J., and Kerrschner, H.: The exposure dating of an Egesen moraine at Julier Pass, Switzerland, measured with the cosmogenic radionuclides 10Be, 26Al and 36Cl, Eclogae Geol. Helv., 89, 1049–1063, 1996. 
Kellerer-Pirkbauer, A. and Drescher-Schneider, R.: Glacier fluctuation and vegetation history during the Holocene at the largest glacier of the Eastern Alps (Pasterze Glacier, Austria): new insight based on recent peat findings, in: Proceedings of the 4th Symposium of the Hohe Tauern National Park for Research in Protected Areas, Kaprun, Austria, 17–19 September 2009, 151–155, https://www.parcs.at/npht/pdf_public/2018/35839_20180308_134628_NP_Hohe_Tauern_Conference_4_0151-0155.pdf (last access: 14 July 2026), 2009. 
Le Roy, M., Nicolussi, K., and Schlüchter, C.: Tree-ring Dating of the Little Ice Age Maxima of Arolla Glaciers (Valais, Switzerland), Journal of Alpine Research/Revue de Géographie Alpine, 111-2, 23 pp., https://doi.org/10.4000/rga.12170, 2023. 
Maisch, M., Burga, C. A., and Fitze, P.: Lebendiges Gletschervorfeld. Führer und Begleitbuch zum Gletscherpfad Morteratsch, Engadin-Press, Samedan, 138 pp., 1993. 
Maisch, M., Brandova, D., Ivy-Ochs, S., and Kubik, P. W.: Exposure dating on moraines of the Morteratsch glacier (Bernina region, Upper Engadine, GR), in: Proceedings of the 3rd Swiss Geoscience Meeting, Zürich, Switzerland, 18–19 September 2005, Swiss Academy of Sciences, 181–182, https://geoscience-meeting.ch/sgm2005/SGM05_abstracts/05_Measuring_surf_process/05_PDF/Maisch_talk.pdf (last access: 14 July 2026), 2005. 
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Short summary
We found Larix decidua at 2156 m altitude in front of the Morteratschgletscher (Engadin, CH) liberated recently from the ice. This tree stopped growing ~10 350 years ago. Another tree started to grow ~10 800 years ago (early Preboreal), which was ~800 years after the end of the Younger Dryas. At this time the glacier did not cover the sampling site. Thus, in the early Preboreal the terminus of the Morteratschgletscher was at much higher elevation in comparison to the present-day situation.
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