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Holocene vegetation history in Romanian Subcarpathians |
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| Authors: | Ioan Tantau Maurice Reille Jacques-Louis de Beaulieu Sorina Farcas Simon Brewer |
| Institution: | a Babe?-Bolyai University, Department of Geology, M. Kog?lniceanu Street 1, 400084 Cluj-Napoca, Romania b IMEP, Université Paul Cézanne (Aix-Marseille III), Europôle Méditerranéen de l'Arbois, B.P. 80, F-13545 Aix-en-Provence cedex 04, France c Institute of Biological Researches, Republicii Street 48, 400015 Cluj-Napoca, Romania d Institut d'Astrophysique et de Géophysique, Université de Liège, Bat. B5C, 17 Allée du Six Août, B-4000, Liège, Belgium |
| Abstract: | Pollen analysis from a peat core 7.0 m in length, taken from a bog near Bisoca, in a mid-altitude area of the Buzăului Subcarpathian mountains, is used to reconstruct the postglacial vegetation history of the region. The vegetation record, which is supported by twelve 14C dates, starts at the end of the Late Glacial period. At the Late Glacial/Holocene transition, open vegetation was replaced by forest, suggesting a fast response to climatic warming. The Holocene began with the expansion of Betula, Pinus and Ulmus, followed, after 11,000 cal yr BP, by Fraxinus, Quercus, Tilia and Picea. The rapid expansion of these taxa may be due to their existence in the area during the Late Glacial period. At ca. 9200 cal yr BP, Corylus expanded, reaching a maximum after 7600 cal yr BP. The establishment of Carpinus occurred at ca. 7200 cal yr BP, with a maximum at ca. 5700 cal yr BP. Fagus pollen is regularly recorded after 7800 cal yr BP and became dominant at ca. 2000 cal yr BP. The first indications of human activities appear around 3800 cal yr BP. |
| Keywords: | Pollen analysis Radiocarbon dating Vegetation history Forest dynamics Human influences Holocene Subcarpathians Romania |
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