Wagner, B.; Vogel, H.; Zanchetta, G.; Sulpizio, R. (2010). Environmental change within the Balkan region during the past ca. 50 ka recorded in the sediments from lakes Prespa and Ohrid. Biogeosciences, 7(10), pp. 3187-3198. Copernicus Publications 10.5194/bg-7-3187-2010
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Abstract. Lakes Prespa and Ohrid, in the Balkan region,
are considered to be amongst the oldest lakes in Europe.
Both lakes are hydraulically connected via karst aquifers.
From Lake Ohrid, several sediment cores up to 15m long
have been studied over the last few years. Here, we document
the first long sediment record from nearby Lake Prespa
to clarify the influence of Lake Prespa on Lake Ohrid and
the environmental history of the region. Radiocarbon dating
and dated tephra layers provide robust age control and indicate
that the 10.5m long sediment record from Lake Prespa
reaches back to 48 ka. Glacial sedimentation is characterized
by low organic matter content and absence of carbonates in
the sediments, which indicate oligotrophic conditions in both
lakes. Holocene sedimentation is characterized by particularly
high carbonate content in Lake Ohrid and by particularly
high organic matter content in Lake Prespa, which indicates
a shift towards more mesotrophic conditions in the latter.
Long-term environmental change and short-term events,
such as related to the Heinrich events during the Pleistocene
or the 8.2 ka cooling event during the Holocene, are well
recorded in both lakes, but are only evident in certain proxies.
The comparison of the sediment cores from both lakes
indicates that environmental change affects particularly the
trophic state of Lake Prespa due to its lower volume and water
depth.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Institute of Geological Sciences 08 Faculty of Science > Institute of Geological Sciences > Quaternary Geology |
UniBE Contributor: |
Vogel, Hendrik |
Subjects: |
500 Science > 550 Earth sciences & geology |
ISSN: |
1726-4170 |
Publisher: |
Copernicus Publications |
Language: |
English |
Submitter: |
Hendrik Vogel |
Date Deposited: |
08 Aug 2014 15:46 |
Last Modified: |
05 Dec 2022 14:30 |
Publisher DOI: |
10.5194/bg-7-3187-2010 |
BORIS DOI: |
10.7892/boris.45279 |
URI: |
https://boris.unibe.ch/id/eprint/45279 |
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