My research is about carbon cycling in aquatic systems, with special focus on the fate of natural organic matter, greenhouse gas emission, and carbon sequestration in sediments.
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For more information on the research and current projects, continue reading below.
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Inland waters, i.e. lakes, running waters and reservoirs, cover only a small fraction of the Earth’s surface, but are disproportionally active sites of carbon cycling. Many lakes receive sizeable loads of terrestrial carbon from the surrounding catchment, triggering intensive in-lake carbon processing: substantial mineralization of organic matter leads to high carbon dioxide and methane emissions from lakes to the atmosphere, and at the same time, OC sequestration in lake sediments constitutes a significant long-term carbon sink.
We combine field measurements with lab experiments, ranging from processes-scale understanding of degradation and preservation in sediments to catchment-scale and global-scale assessments of aquatic carbon fluxes. A common denominator of all projects is to understand the interactions between biogeochemical cycling in aquatic systems and environmental change.
- Carbon Cascades from Land to Ocean in the Anthropocene (EU ITN, 2015-2018, co-PI)
- Pesquisador Visitante Especial (Special Guest Researcher; CNPq and CAPES, Brazil, 2015-2017)
- Inland Water Ecosystems in the global carbon cycle – towards a mechanistic understanding (Knut och Alice Wallenberg Stiftelse, 2014-2019, co-PI)
- Towards a new understanding of carbon cycling in freshwaters: Methane emission hot spots and carbon burial in tropical reservoirs (ERC Starting Grant, 2014-2018, PI)
- In-situ measurement of gas exchange over lake sediments – a key to understanding a major greenhouse gas source in the boreal landscape (VR, 2012-2015, PI)
- The color of water – interplay with climate, and effects on drinking water supply. (Formas, 2010-2014, co-PI)
Current group members:
- Simone Peter, Post-doc: Release of DOC from iron in anoxic sediments
- Raquel Mendonça, Post-doc: OC burial in tropical reservoirs
- Hannah Chmiel, PhD student: The impact of climate change on carbon storage and carbon cycling in boreal lake sediments.
- Jovana Kokic, PhD student: In-situ measurement of gas exchange over lake sediments – a key to understanding a major greenhouse gas source in the boreal landscape.
- Anastasija Isidorova, PhD student: Organic carbon burial in tropical reservoirs.
- Annika Linkhorst, PhD student: Metahne emission from tropical reservoirs.
- Co-advisor of PhD student Blaize Denfeld (under-ice dynamics of CO2)
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