DATE2016-05-30 10:40:05
AUTHORSOdile Peyron (1), Simon Goring (2), Nathalie Combourieu-nebout (3), Laura Sadori (4), Adele Bertini (5), Timme H. Donders (6), Sébastien Joannin (1), Katerina Kouli (7), Andreas Koutsodendris (8), Alessia Masi (4), Anna-maria Mercuri (9), Kostas Panagiotopoulos (10), Gaia Sinopoli (4), Paola Torri (9), Bernd Wagner (10)
  1. Département De Préhistoire, Muséum National D’histoire Naturelle, Institut De Paléontologie Humaine Paris (France)
  2. Department Of Geography, Univ. Of Wisconsin-madison, Wisconsin Madison (France)
  3. Dipartimento Di Scienze Della Terra, Università Di Firenze Firenze (Italy)
  4. Institut Des Sciences De L’evolution De Montpellier, Université De Montpellier Montpellier (France)
  5. Dipartimento Di Biologia Ambientale, Università Di Roma La Sapienza Roma (Italy)
  6. Palaeoecology, Department Of Physical Geography, Utrecht University Utrecht (Netherlands)
  7. Faculty Of Geology And Geoenvironment, National And Kapodistrian University Of Athens Athens (Greece)
  8. Paleoenvironmental Dynamics Group, Institute Of Earth Sciences, Heidelberg University Heidelberg (Germany)
  9. Dipartimento Di Scienze Della Vita, Università Di Modena E Reggio Emilia Modena (Italy)
  10. Institute For Geology And Mineralogy, University Of Cologne Cologne (Germany)
ABSTRACTLake Ohrid, on the Balkan Peninsula, is one of the deepest lakes in Europe and has a high potential for palaeoenvironmental studies. A drilling campaign was carried out in 2013 as part of the International Continental Scientific Drilling Program (ICDP), within the scope of the Scientific Collaboration on Past Speciation Conditions in Lake Ohrid (SCOPSCO) project. Multidisciplinary analysis (including sedimentology, geochronology, paleontology, and geochemistry) was undertaken on sediment sequences from the “DEEP” site that cover the entire lake history (>1.2 myr). The DEEP sequence is an exceptional core for reconstructing glacial-interglacial climate changes in southern Europe. The sequence (spanning approximately 500 kyr or the past 12 marine isotope stages) has been analysed by a team of palynologists from several European laboratories. Pollen analysis has identified the major patterns of vegetation and climate changes from marine isotope stages MIS12 to MIS1. Continuous sediment infill at the site facilitates the resolution of repeated non forested/forested phases in response to glacial-interglacial cycles and sub-Milankovitch climate change. The goal of this study is to reconstruct the climate in the Balkans during the last 500 kyr, inferred from Lake Ohrid (DEEP) pollen data. Pollen-based climate reconstructions are important for better understanding the variability of the glacial–interglacial cycles in southern Europe. These reconstructions focus on climatic seasonality, one of the main drivers of vegetation structure in the Mediterranean region. We also aim to produce a robust climate reconstruction based on a multi-method approach (including the Modern Analogues Technique, Random Forests, and Weighted Averaging regression). The originality of our approach is to better assess past climates and the uncertainty of the climate reconstruction by integrating the errors calculated by each method in an “optimal” temperature and precipitation reconstruction.