Growth coherency and climate sensitivity of Larix sibirica at the upper treeline in the Russian Altai-Sayan Mountains |
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| Institution: | 1. Siberian Federal University, 660041 Krasnoyarsk, Russian Federation;2. Sukachev Institute of Forest SB RAS, 660036 Krasnoyarsk, Russian Federation;3. Tuva State University, 667000 Kyzyl, Republic of Tuva, Russian Federation;4. Swiss Federal Research Institute WSL, Zürcherstrasse 111, 8903, Birmensdorf, Switzerland;1. Swiss Federal Research Institute, WSL, Birmensdorf, Switzerland;2. Oeschger Centre for Climate Change Research, Bern, Switzerland;3. Institute of Plant and Animal Ecology UD RAS, Yekaterinburg, Russia;4. ETH Zurich, Institute of Terrestrial Ecosystems, Zurich, Switzerland;5. Dendrolab.ch, Bern University, Bern, Switzerland;6. Johannes Gutenberg University, Mainz, Germany;7. Iceland Forest Service, Reykjavik, Iceland;8. V.N Sukachev Institute of Forest SB RAS, Krasnoyarsk, Russia;9. Stolby National Wildlife Nature Reserve, Krasnoyarsk, Russia;10. Siberian Federal University, Krasnoyarsk, Russia;11. North-Eastern Federal University, Yakutsk, Russia;12. Melnikov Permafrost Institute, Yakutsk, Russia;13. Institute of Geography, RAS, Moscow, Russia;14. Institute for Forest Sciences IWW, University of Freiburg, Freiburg, Germany;15. Global Change Research Centre AS CR, Brno, Czech Republic;1. Department of Geography, Johannes Gutenberg University, 55099 Mainz, Germany;2. Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA;3. Institute of Geosciences, University of Mainz, 55128 Mainz, Germany;4. Swiss Federal Research Institute WSL, 8903 Birmensdorf, Switzerland;5. Oeschger Centre for Climate Change Research, Bern, Switzerland;6. Global Change Research Centre AS CR, Brno, Czech Republic;1. Institute of Desert Meteorology, China Meteorological Administration, Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration, Key Laboratory of Tree-ring Ecology of Xinjiang Uigur Autonomous Region, Urumqi 830002, China;2. Almaty Branch of Kazakh Scientific Research Institute of Forestry, Ministries of Agriculture, Almaty, Kazakhstan;1. Garrett and Moore, Inc., Cary, NC 27518, United States;2. Department of Civil, Construction and Environmental Engineering, North Carolina State University, Raleigh, NC 27698-7908, United States;3. Computer Sciences Corporation, 6361 Walker Ln, Alexandria, Virginia 23210, Egypt;1. Department of History, Stockholm University, 106 91 Stockholm, Sweden;2. Bolin Centre for Climate Research, Stockholm University, 106 91 Stockholm, Sweden;3. Swedish Collegium for Advanced Study, Linneanum, Thunbergsvägen 2, 752 38 Uppsala, Sweden;4. Danish Meteorological Institute, Lyngbyvej 100, 2100 Copenhagen Ø, Denmark;5. Dendro Sciences Group, Swiss Federal Research Institute WSL, 8903 Birmensdorf, Switzerland;6. Department of Physical Geography, Stockholm University, 106 91 Stockholm, Sweden;7. Department of Geography, University of Cambridge, Cambridge CB2 1QB, United Kingdom;8. Forestry and Wood Sciences, Department of Forest Ecology, Czech University of Life Sciences Prague, 16500 Prague, Czech Republic;9. Regional Climate Group, Department of Earth Sciences, University of Gothenburg, 405 30 Gothenburg, Sweden;10. Georges Lemaître Centre for Earth and Climate Research, Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium;11. Department of Mathematics, University of Bergen, Johannes Brunsgate 12, 5008 Bergen, Norway;12. CzechGlobe Global Change Research Institute CAS, 603 00 Brno, Czech Republic;13. Department of Geography, Faculty of Science, Masaryk University, 613 00 Brno, Czech Republic |
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| Abstract: | Tree-ring research in the Altai-Sayan Mountains so far only considered a limited number of well-replicated site chronologies. The dendroecological and palaeoclimatological potential and limitations of large parts of south-central Russia therefore remain rather unexplored. Here, we present a newly updated network of 13 larch (Larix sibirica Ldb.) tree-ring width (TRW) chronologies from mid to higher elevations along a nearly 1000 km west-to-east transect across the greater Altai-Sayan region. All data were sampled between 2009 and 2014. The corresponding site chronologies cover periods from 440 to 860 years. The highest TRW agreement is found between chronologies ≥2200 m asl, whereas the material from lower elevations reveals overall less synchronized interannual to longer-term growth variability. While fluctuations in average June–July temperature predominantly contribute to the growth at higher elevations, arid air masses from Mongolia mainly affect TRW formation at lower elevations. Our results are indicative for the dendroclimatological potential of the Altai-Sayan Mountains, where both, variation in summer temperature and hydroclimate can be robustly reconstructed back in time. These findings are valid for a huge region in central Asia where reliable meteorological observations are spatially scarce and temporally restricted to the second half of the 20th century. The development of new high-resolution climate reconstruction over several centuries to millennia will further appear beneficial for timely endeavors at the interface of archaeology, climatology and history. |
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| Keywords: | Altai-Sayan Mountains Central Asia Growth-climate sensitivity Network analyses Summer temperature Tree-ring width Upper treeline |
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