Increased growth and reduced summer drought limitation at the southern limit of Fagus sylvatica L., despite regionally warmer and drier conditions |
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| Affiliation: | 1. St. Catherine’s College, Manor Road, Oxford, OX1 3UJ, UK;2. Fitzwilliam College, Storeys Way, Cambridge, CB3 0DG, UK;3. Department of Geography, University of Cambridge, Downing Place, Cambridge, CB2 3EN, UK;1. Department of Geography, Honk Kong Baptist University, Kowloon Tong, Hong Kong;2. Global Institute for Water Security, University of Saskatchewan, National Hydrology Research Centre, 11 Innovation Boulevard, Saskatoon, SK S7N 3H5, Canada;3. Department of Soil Science, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada;4. Canadian Forest Service, Natural Resources Canada, Northern Forestry Centre, 5320-122 Street, Edmonton, AB T6H 3S5, Canada;5. Environment Canada, University of Saskatchewan, National Hydrology Research Centre, 11 Innovation Boulevard, Saskatoon, SK S7N 3H5, Canada;1. Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, P.O. Box 454, No. 35 Qinghua East Road, Haidian District, 100083 Beijing, PR China;2. Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, P.O. Box 49, 230 53 Alnarp, Sweden;3. Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences, Box 7026, 750 07 Uppsala, Sweden;4. Chaire industrielle CRSNG-UQAT-UQAM en aménagement forestier durable, Université du Québec en Abitibi-Témiscamingue, 445 boulevard de l''Université, Rouyn-Noranda, Québec J9X 5E4, Canada;1. CREA Research Centre for Forestry and Wood, 52100 Arezzo, Italy;2. Faculty of Pure and Applied Sciences, Open University of Cyprus, Latsia, 2252 Nicosia, Cyprus;3. Department of Biological Sciences, University of Cyprus, 1678 Nicosia, Cyprus;4. School of Environmental Studies, KES College, 1055 Nicosia, Cyprus;5. CREA Research Centre for Agriculture and Environment, 70125 Bari, Italy;1. Chair of Silviculture, Institute of Forest Sciences, University of Freiburg, Tennenbacherstr. 4, 79106 Freiburg, Germany;2. Department of Geography, University of Cambridge, Downing Place, Cambridge, CB2 3EN, UK;3. Swiss Federal Research Institute WSL, Zürcherstrasse 111, CH-8903 Birmensdorf, Switzerland;4. CzechGlobe and Department of Geography, Masaryk University, Kotlářská 2, 61137, Czech Republic;1. “Stefan cel Mare” University Suceava, Faculty of Forestry, Suceava, Romania;2. National Institute for Research and Development in Forestry “Marin Drăcea” – INCDS, Calea Bucovinei 73 bis, 725100, Câmpulung Moldovenesc, Romania;3. Norwegian Institute for Nature Research, Trondheim, Norway |
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| Abstract: | Tree populations at the equatorward edge of their distribution are predicted to respond to increased temperature and drought with declining performance. Empirical studies of Fagus sylvatica L., one of the most studied tree species in Europe, have broadly supported these predictions. Using a network of tree ring chronologies from northern Greece, we showed that growth in populations of this species at their southeast distribution limit was limited by summer temperature and precipitation, particularly at low elevations. Furthermore, decadal periods of lower precipitation and higher temperature in the twentieth century were associated with multi-year growth depressions. However, since 1990, growth trends were positive across the network, despite continued dry and hot summer conditions. Growth trends were not correlated with either elevation or tree age. Additionally, correlations between growth and temperature and precipitation were weaker in recent decades. These results are consistent with another recent report from the Balkan Peninsula, and indicate that forests in this region may be more resistant to regional climate change than previously considered. |
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| Keywords: | Beech Greece Balkan Range edge Tree growth Growth trend |
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