Lipid biomarkers and other geochemical indicators in paleoenvironmental studies of two Arctic systems: a Russian permafrost peatland and marine sediments from the Lomonosov Ridge
2012 (English)Doctoral thesis, comprehensive summary (Other academic)
The reconstruction of past environmental conditions is a fascinating research area that attracts the interest of many individuals in various geological disciplines. Paleoenvironmental reconstruction studies can shed light on the understanding of past climates and are a key to the prediction of future climate changes and their consequences. These studies take on special significance when focused on areas sensitive to climate change. The Arctic region, which is experiencing dramatic changes today in its peatlands and in its ocean, is prime example. The entire region plays a major role in global climate changes and has recently received considerable interest because of the potential feedbacks to climate change and its importance in the global carbon cycle.
For a better understanding of the role of Arctic peatlands and the Arctic Ocean to global climate changes, more records of past conditions and changes in the region are needed. This work applies different geochemical proxies, with special emphasis on lipid biomarkers, to the study of a permafrost peat deposit collected from the Eastern European Russian Arctic and a marine core retrieved from the Lomonosov Ridge in the central Arctic Ocean. The results reported of this study show that molecular stratigraphy obtained from the analysis of lipid biomarkers in both peat and marine profiles, combined with other environmental proxies, can contribute significantly to the study of Arctic ecosystems of the past.
Place, publisher, year, edition, pages
Stockholm: Department of Geological Sciences, Stockholm University , 2012. , 17 p.
Meddelanden från Stockholms universitets institution för geologiska vetenskaper, 347
lipid biomarkers, peat, permafrost, Arctic Ocean, marine sediments
Earth and Related Environmental Sciences
Research subject Geochemistry
IdentifiersURN: urn:nbn:se:su:diva-65350ISBN: 978-91-7447-382-7OAI: oai:DiVA.org:su-65350DiVA: diva2:462647
2012-01-23, Nordenskiöldsalen, Geovetenskapens hus, Svante Arrhenius väg 12, Stockholm, 10:00 (English)
Pancost, Richard, Dr.
Mörth, Magnus, Professor
At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 2: Manuscript. Paper 3: Manuscript. Paper 4: Manuscript.2012-01-022011-12-072014-09-12Bibliographically approved
List of papers