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Environmental and climatic controls on the carbon and oxygen isotope compositions of living and fossil ostracods from Lake Geneva

English title Environmental and climatic controls on the carbon and oxygen isotope compositions of living and fossil ostracods from Lake Geneva
Applicant Vennemann Torsten
Number 119935
Funding scheme Project funding (Div. I-III)
Research institution Institut de Minéralogie et Géochimie Université de Lausanne
Institution of higher education University of Lausanne - LA
Main discipline Geochemistry
Start/End 01.04.2008 - 31.03.2009
Approved amount 65'726.00
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Keywords (10)

Stable Isotopes; Ostracods; Paleoclimatology; Paleoenvironment; Paleoecology; Lake Geneva; geochemistry; isotope; carbon; and oxygen

Lay Summary (English)

Lead
Lay summary
The stable oxygen and carbon isotope as well as trace element composition of living ostracods as well as their shells from sediment cores of Lake Geneva are being investigated at four different sites and water depths, together with the chemical and isotopic composition of the water column and the sediment pore fluids. The aim is to understand the conditions of formation of ostracods in this lake. The modern system is then used as a "natural experimental system" to help interpret past climatic-environmental changes from sediment cores going back in time. The outcome of the natural experiments will help to determine rate and time of growth as well as species-specific fractionation effects under well-constrained conditions adding critical information to the existing data base on the selected species. Because of Lake Geneva’s geographic position, relatively large size and hence long residence time of the water, its restricted and well characterized catchment area, and the abundance of ostracods, this lake is well suited for this type of paleoenvironmental study. The climatic evolution of this central European site can then be compared in detail with other sites analyzed within central Europe and with the marine sites used as global records of climate change in order to evaluate regional changes in climate in the light of the global changes experienced.
Direct link to Lay Summary Last update: 21.02.2013

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Associated projects

Number Title Start Funding scheme
107958 Environmental and climatic controls on the carbon and oxygen isotope compositions of living and fossil ostracods from Lake Geneva 01.04.2005 Project funding (Div. I-III)
164032 CLUMPING LAUSANNE: A REQUEST FOR A REGIONAL FACILITY TO MEASURE CLUMPING IN CARBONATES 01.01.2016 R'EQUIP

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