TCFLAND2SEA · Thawing Carbon From LAND to SEA: Microbial Degradation of Organic Matter and Response to Thawing Permafrost in the Northeast Siberian Land-Shelf System
Horizon 2020 — Marie Skłodowska-Curie Actions
- Duration
- 2020-03-01 → 2022-02-28
- EU contribution
- €203,852
- Participants
- 1
- Scheme
- MSCA-IF-EF-ST
Lines connect the coordinator with its partners.
Results in brief
Thawing Carbon From LAND to SEA: Microbial Degradation of Organic Matter and Response to Thawing Permafrost in the Northeast Siberian Land-Shelf System
East Siberian Arctic Shelf harbours a huge amount of subsea permafrost and gas hydrates, which are thawing and emitting the greenhouse gases CO2 and CH4 from the sediment to the upper water column and atmosphere under the global warming. The giant sleeping carbon in the Arctic Ocean could have severe climate and even socio-economic consequences. The tiny microorganisms in the environment have an important role in regulating the degradation and emission rate of the greenhouse; however, the microbially-driven mechanisms remain to be elusive. This project TCFLand2Sea aims to improve the understanding of the microbial ecosystem in response to thawing PF and their roles in the biogeochemical carbon cycle in the Arctic. For this project, it aims to address the following objectives as well as the structure of different work packages : 1. To develop the microbial lipid-based metabolic flux analysis model on MATLAB to study the group-specific microbial metabolism in the environment. 2. To investigate microbial mediated-methane oxidation processes in methane seep areas in the outer of Laptev Sea, further improving the understanding of methane emission history in the past centuries. 3. To quantitatively estimate carbon flux through the central metabolic network within microbial community in soil and marine sediment, further testing the hypothesis of microbial metabolic and functioning diversity on carbon utilization modes. 4. To constrain the factors on the mediation of organic matter degradation in different environmental conditions, further improving the understanding of the microbial roles in the biogeochemical C cycle. 5. To disseminate the results of this project on fluxomic techniques on microbially-driven biogeochemistry study and attract more attention to Arctic carbon cycling.
Data: CORDIS, © European Union
Project objective
Arctic permafrost (PF) as vulnerable carbon stock to global warming is increasingly receiving attention due to significant importance in global climate change. Immense carbon stock is held in surface soils on land, coastal Pleistocene Ice Complex Deposit and sediment of shallow subsea in Arctic. Under global warming, the emission of greenhouse gases CO2 and CH4 from PF could further intensify global warming; however, the key link between thawing PF and greenhouse gas emission -microbial degradation remains poorly understood. Microbial degradation of organic matter and its response to thawing is conducive to understanding the biogeochemical carbon cycle and even the future prediction of greenhouse gases in Arctic. To better understand microbial mediation on PF-carbon feedback to global warming, this proposal aims to quantitatively estimate the microbial activity and metabolism in different types of PF (inland, coastal Ice Complex Deposit and marine sediment of subsea PF) from the northeast Siberian via multidisciplinary techniques including microcosm incubation, lipid-based stable isotope probing, modelled metabolic flux analysis and metabolomics. This proposal will improve the understanding of microbial ecosystem in response to thawing PF and their roles in biogeochemical carbon cycle in Arctic.
Original text from CORDIS.
Participants
- STOCKHOLMS UNIVERSITET · StockholmCoordinatorSweden
Links
Data: CORDIS, © European Union