Universität zu Köln

Sadori, Laura ORCID: 0000-0002-2774-6705, Koutsodendris, Andreas ORCID: 0000-0003-4236-7508, Panagiotopoulos, Konstantinos ORCID: 0000-0002-3158-7962, Masi, Alessia ORCID: 0000-0001-9822-9767, Bertini, Adele, Combourieu-Nebout, Nathalie ORCID: 0000-0002-3604-5986, Francke, Alexander ORCID: 0000-0002-0370-5802, Kouli, Katerina ORCID: 0000-0003-1656-1091, Joannin, Sebastien ORCID: 0000-0001-8345-9252, Mercuri, Anna Maria ORCID: 0000-0001-6138-4165, Peyron, Odile, Torri, Paola, Wagner, Bernd ORCID: 0000-0002-1369-7893, Zanchetta, Giovanni, Sinopoli, Gaia and Donders, Timme H. (2016). Pollen-based paleoenvironmental and paleoclimatic change at Lake Ohrid (south-eastern Europe) during the past 500 ka. Biogeosciences, 13 (5). S. 1423 - 1438. GOTTINGEN: COPERNICUS GESELLSCHAFT MBH. ISSN 1726-4189

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Abstract

Lake Ohrid is located at the border between FY-ROM (Former Yugoslavian Republic of Macedonia) and Albania and formed during the latest phases of Alpine orogenesis. It is the deepest, the largest and the oldest tectonic lake in Europe. To better understand the paleoclimatic and paleoenvironmental evolution of Lake Ohrid, deep drilling was carried out in 2013 within the framework of the Scientific Collaboration on Past Speciation Conditions (SCOP-SCO) project that was funded by the International Continental Scientific Drilling Program (ICDP). Preliminary results indicate that lacustrine sedimentation of Lake Ohrid started between 1.2 and 1.9 Ma ago. Here we present new pollen data (selected percentage and concentration taxa/groups) of the uppermost similar to 200m of the 569m long DEEP core drilled in the depocentre of Lake Ohrid. The study is the fruit of a cooperative work carried out in several European palynological laboratories. The age model of this part of the core is based on 10 tephra layers and on tuning of biogeochemical proxy data to orbital parameters. According to the age model, the studied sequence covers the last similar to 500 000 years at a millennial-scale resolution (similar to 1.6 ka) and records the major vegetation and climate changes that occurred during the last 12 (13 only pro parte) marine isotope stages (MIS). Our results indicate that there is a general good correspondence between forested/nonforested periods and glacial-interglacial cycles of the marine isotope stratigraphy. The record shows a progressive change from cooler and wetter to warmer and drier interglacial conditions. This shift in temperature and moisture availability is visible also in vegetation during glacial periods. The period corresponding to MIS11 (pollen assemblage zone OD-10, 428-368 kaBP) is dominated by montane trees such as conifers. Mesophilous elements such as deciduous and semi-deciduous oaks dominate forest periods of MIS5 (PASZ OD-3, 129-70 kaBP) and MIS1 (PASZ OD1, 14 kaBP to present). Moreover, MIS7 (PASZ OD-6, 245-190 ka) shows a very high interglacial variability, with alternating expansions of montane and mesophilous arboreal taxa. Grasslands (open vegetation formations requiring relatively humid conditions) characterize the earlier glacial phases of MIS12 (PASZ OD-12, 488-459 ka), MIS10 (corresponding to the central part of PASZ OD-10, 428-366 ka) and MIS8 (PASZ OD-7, 288-245 ka). Steppes (open vegetation formations typical of dry environments) prevail during MIS6 (OD-5 and OD-4, 190-129 ka) and during MIS4-2 (PASZ OD-2, 70-14 ka). Our palynological results support the notion that Lake Ohrid has been a refugium area for both temperate and montane trees during glacials. Closer comparisons with other long southern European and Near Eastern pollen records will be achieved through ongoing high-resolution studies.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Sadori, Laura UNSPECIFIED orcid.org/0000-0002-2774-6705 UNSPECIFIED Koutsodendris, Andreas UNSPECIFIED orcid.org/0000-0003-4236-7508 UNSPECIFIED Panagiotopoulos, Konstantinos UNSPECIFIED orcid.org/0000-0002-3158-7962 UNSPECIFIED Masi, Alessia UNSPECIFIED orcid.org/0000-0001-9822-9767 UNSPECIFIED Bertini, Adele UNSPECIFIED UNSPECIFIED UNSPECIFIED Combourieu-Nebout, Nathalie UNSPECIFIED orcid.org/0000-0002-3604-5986 UNSPECIFIED Francke, Alexander UNSPECIFIED orcid.org/0000-0002-0370-5802 UNSPECIFIED Kouli, Katerina UNSPECIFIED orcid.org/0000-0003-1656-1091 UNSPECIFIED Joannin, Sebastien UNSPECIFIED orcid.org/0000-0001-8345-9252 UNSPECIFIED Mercuri, Anna Maria UNSPECIFIED orcid.org/0000-0001-6138-4165 UNSPECIFIED Peyron, Odile UNSPECIFIED UNSPECIFIED UNSPECIFIED Torri, Paola UNSPECIFIED UNSPECIFIED UNSPECIFIED Wagner, Bernd UNSPECIFIED orcid.org/0000-0002-1369-7893 UNSPECIFIED Zanchetta, Giovanni UNSPECIFIED UNSPECIFIED UNSPECIFIED Sinopoli, Gaia UNSPECIFIED UNSPECIFIED UNSPECIFIED Donders, Timme H. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-290485
DOI:	10.5194/bg-13-1423-2016
Journal or Publication Title:	Biogeosciences
Volume:	13
Number:	5
Page Range:	S. 1423 - 1438
Date:	2016
Publisher:	COPERNICUS GESELLSCHAFT MBH
Place of Publication:	GOTTINGEN
ISSN:	1726-4189
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SCALE CLIMATE VARIABILITY; VEGETATION HISTORY; TENAGHI-PHILIPPON; ENVIRONMENTAL-CHANGE; GLACIAL REFUGIA; ISOTOPE STAGES; DEEP SECTION; PRESPA; RECORD; REGION Multiple languages Ecology; Geosciences, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/29048