Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/6772
AuthorsWagner, B.* 
Vogel, H.* 
Zanchetta, G.* 
Sulpizio, R.* 
TitleEnvironmental change within the Balkan region during the past ca. 50 ka recorded in the sediments from lakes Prespa and Ohrid
Issue Date19-Oct-2010
Series/Report no.10/7(2010)
DOI10.5194/bgd-7-3365-2010
URIhttp://hdl.handle.net/2122/6772
Keywordsgeocehemistry
lake sediments
paleoclimate proxies
Subject Classification03. Hydrosphere::03.01. General::03.01.03. Global climate models 
04. Solid Earth::04.08. Volcanology::04.08.05. Volcanic rocks 
AbstractLakes 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 15 m 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 10.5 m 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.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
Biogeos_Wagner_etal_2010.pdf4.77 MBAdobe PDFView/Open
Show full item record

Page view(s)

173
Last Week
0
Last month
checked on Jun 22, 2017

Download(s)

227
checked on Jun 22, 2017

Google ScholarTM

Check

Altmetric