Organisation och personal

Sebastian Sobek

universitetslektor vid Institutionen för ekologi och genetik, Limnologi

E-post:
Sebastian.Sobek[AT-tecken]ebc.uu.se
Telefon:
018-471 2718
Besöksadress:
Evolutionsbiologiskt centrum (EBC)
Norbyv. 18 D
75236 Uppsala
Postadress:
Norbyv. 18 D
75236 Uppsala

Kort presentation

Min forskning kretsar runt det naturliga organiska materialets nedbrytbarhet. Speciellt fokus ligger på växthusgasavgång från inlandsvatten, och inlagring av organiskt kol i sjösediment.

Ett populärvetenskapligt portätt av min forskning på svenska finns här.

Mer information om min forskning och aktuella projekt finns nedan.

 

 

Akademiska meriter: FD

Mina kurser

Biografi

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.

Current projects:

  • 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) 

Publikationer

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