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Pollen-based temperature and precipitation changes in the Ohrid Basin (western Balkans) between 160 and 70 ka

Research output: Contribution to journalArticle

  • Gaia Sinopoli
  • Odile Peyron
  • Alessia Masi
  • Jens Holtvoeth
  • Alexander Francke
  • Bernd Wagner
  • Laura Sadori
Original languageEnglish
Pages (from-to)53-71
Number of pages19
JournalClimate of the Past
Volume15
Issue number1
Early online date11 Jan 2019
DOIs
DateAccepted/In press - 3 Dec 2018
DateE-pub ahead of print - 11 Jan 2019
DatePublished (current) - Jan 2019

Abstract

Our study aims to reconstruct climate changes that occurred at Lake Ohrid (south-western Balkan Peninsula), the oldest extant lake in Europe, between 160 and 70 ka (covering part of marine isotope stage 6, MIS 6; all of MIS 5; and the beginning of MIS 4). A multi-method approach, including the “Modern Analog Technique” and the “Weighted Averaging Partial Least-Squares Regression”, is applied to the high-resolution pollen sequence of the DEEP site, collected from the central part of Lake Ohrid, to provide quantitative estimates of climate and bioclimate parameters. This allows us to document climatic change during the key periods of MIS 6 and MIS 5 in southern Europe, a region where accurate climate reconstructions are still lacking for this time interval.

Our results for the penultimate glacial show cold and dry conditions, while the onset of the “last interglacial” is characterized by wet and warm conditions, with temperatures higher than today (by ca. 2 ∘C). The Eemian also shows the well-known climatic tri-partition in the Balkans, with an initial pre-temperate phase of abrupt warming (128–121 ka), a central temperate phase with decreasing temperatures associated with wet conditions (121–118 ka), followed by a post-temperate phase of progressive change towards cold and dry conditions (118–112 ka).

After the Eemian, an alternation of four warm/wet periods with cold/dry ones, likely related to the succession of Greenland stadials and cold events known from the North Atlantic, occurred. The observed pattern is also consistent with hydrological and isotopic data from the central Mediterranean.

The Lake Ohrid climate reconstruction shows greater similarity with climate patterns inferred from northern European pollen records than with southern European ones, which is probably due to its intermediate position and the mountainous setting. However, this hypothesis needs further testing as very few climate reconstructions are available for southern Europe for this key time period.

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    Rights statement: This is the final published version of the article (version of record). It first appeared online via Copernicus at https://www.clim-past.net/15/53/2019/ . Please refer to any applicable terms of use of the publisher.

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    Rights statement: This is the final published version of the article (version of record). It first appeared online via Copernicus at https://www.clim-past.net/15/53/2019/ . Please refer to any applicable terms of use of the publisher.

    Final published version, 2 MB, multipart/x-zip

    Licence: CC BY

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