The main focus of my research is the reconstruction of environmental and climate changes in the boreal to arctic landscape in the past, in particular during the Holocene, i.e., the past 11.500 years. By using lake sediments as a historical archive, I study natural as well as human-induced changes through time related to, e.g., lake and landscape development, climate variations or human activities such as atmospheric deposition and land-use. I am particularly interested in the effects of historical changes on the transportation of organic matter from the catchment into lake ecosystems and their implications for lake-water quality, aquatic primary production, and long-term carbon cycling.
In addition to organic and inorganic geochemical proxies, I use infrared spectroscopic methods as a complementary tool to answer the addressed questions. My research involves the further development of applications of visible to mid infrared spectroscopy (VNIRS and FTIRS) to sediment records as fast and cost-efficient qualitative as well as quantitative techniques in environmental studies.