Microbial diversity in degrading permafrost ecosystems and the implications for anaerobic carbon degradation.
The main goal of this research project is to elucidate the fate of organic carbon stored in permafrost in the current context of climate change, looking at microbial-driven carbon degradation in active layer samples from the Lena Delta, Siberia and Herschel Island, Canadian Western Arctic. This is b...
Main Authors: | , |
---|---|
Format: | Conference Object |
Language: | unknown |
Published: |
2010
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/23498/ https://hdl.handle.net/10013/epic.36345 |
id |
ftawi:oai:epic.awi.de:23498 |
---|---|
record_format |
openpolar |
spelling |
ftawi:oai:epic.awi.de:23498 2023-05-15T15:12:34+02:00 Microbial diversity in degrading permafrost ecosystems and the implications for anaerobic carbon degradation. Barbier, Béatrice Wagner, Dirk 2010 https://epic.awi.de/id/eprint/23498/ https://hdl.handle.net/10013/epic.36345 unknown Barbier, B. and Wagner, D. (2010) Microbial diversity in degrading permafrost ecosystems and the implications for anaerobic carbon degradation. , MicroPerm Workshop, Potsdam, Germany. November 8-10 . hdl:10013/epic.36345 EPIC3MicroPerm Workshop, Potsdam, Germany. November 8-10, 2010 p. Conference notRev 2010 ftawi 2021-12-24T15:34:42Z The main goal of this research project is to elucidate the fate of organic carbon stored in permafrost in the current context of climate change, looking at microbial-driven carbon degradation in active layer samples from the Lena Delta, Siberia and Herschel Island, Canadian Western Arctic. This is being accomplished by analyzing the abundance, dynamics and function of microbial communities involved in consuming this organic carbon, especially with respect to methane cycling. Microorganisms involved in methane cycling are of particular relevance in these frozen environments, as rising permafrost temperatures eventually lead to an increased degradation of previously conserved organic substrate. This in turn leads to an increased methanogenic activity, creating a potentially dangerous positive feedback-loop for climate change. The point of focus of this research is the biodiversity and function of microorganisms thriving in such difficult conditions, and their reaction to warming temperatures and a rapidly changing environment.Undergoing research activities include: T-RFLP analysis of methanogenic and methanotrophic communities in various active layer profiles from Herschel Island, incubation experiments under controlled variables to relate the methane production rate from active layer samples to rising temperatures, soil characteristics including soil moisture, C/N ratio, grain size, pH and trace elements. The results obtained will be scrutinized to answer the following questions: 1) Will the structure of microbial communities, particularly methanogenic and methanotrophic populations, be affected by rising permafrost temperatures? 2) Are these communities flexible enough to compensate the changes occurring in their environment with regard to carbon mineralization and their function in polar ecosystems? 3) How much of the carbon stored in permafrost is actually available for mineralization? Conference Object Arctic Climate change Herschel Island lena delta permafrost Siberia Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Herschel Island ENVELOPE(-139.089,-139.089,69.583,69.583) |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The main goal of this research project is to elucidate the fate of organic carbon stored in permafrost in the current context of climate change, looking at microbial-driven carbon degradation in active layer samples from the Lena Delta, Siberia and Herschel Island, Canadian Western Arctic. This is being accomplished by analyzing the abundance, dynamics and function of microbial communities involved in consuming this organic carbon, especially with respect to methane cycling. Microorganisms involved in methane cycling are of particular relevance in these frozen environments, as rising permafrost temperatures eventually lead to an increased degradation of previously conserved organic substrate. This in turn leads to an increased methanogenic activity, creating a potentially dangerous positive feedback-loop for climate change. The point of focus of this research is the biodiversity and function of microorganisms thriving in such difficult conditions, and their reaction to warming temperatures and a rapidly changing environment.Undergoing research activities include: T-RFLP analysis of methanogenic and methanotrophic communities in various active layer profiles from Herschel Island, incubation experiments under controlled variables to relate the methane production rate from active layer samples to rising temperatures, soil characteristics including soil moisture, C/N ratio, grain size, pH and trace elements. The results obtained will be scrutinized to answer the following questions: 1) Will the structure of microbial communities, particularly methanogenic and methanotrophic populations, be affected by rising permafrost temperatures? 2) Are these communities flexible enough to compensate the changes occurring in their environment with regard to carbon mineralization and their function in polar ecosystems? 3) How much of the carbon stored in permafrost is actually available for mineralization? |
format |
Conference Object |
author |
Barbier, Béatrice Wagner, Dirk |
spellingShingle |
Barbier, Béatrice Wagner, Dirk Microbial diversity in degrading permafrost ecosystems and the implications for anaerobic carbon degradation. |
author_facet |
Barbier, Béatrice Wagner, Dirk |
author_sort |
Barbier, Béatrice |
title |
Microbial diversity in degrading permafrost ecosystems and the implications for anaerobic carbon degradation. |
title_short |
Microbial diversity in degrading permafrost ecosystems and the implications for anaerobic carbon degradation. |
title_full |
Microbial diversity in degrading permafrost ecosystems and the implications for anaerobic carbon degradation. |
title_fullStr |
Microbial diversity in degrading permafrost ecosystems and the implications for anaerobic carbon degradation. |
title_full_unstemmed |
Microbial diversity in degrading permafrost ecosystems and the implications for anaerobic carbon degradation. |
title_sort |
microbial diversity in degrading permafrost ecosystems and the implications for anaerobic carbon degradation. |
publishDate |
2010 |
url |
https://epic.awi.de/id/eprint/23498/ https://hdl.handle.net/10013/epic.36345 |
long_lat |
ENVELOPE(-139.089,-139.089,69.583,69.583) |
geographic |
Arctic Herschel Island |
geographic_facet |
Arctic Herschel Island |
genre |
Arctic Climate change Herschel Island lena delta permafrost Siberia |
genre_facet |
Arctic Climate change Herschel Island lena delta permafrost Siberia |
op_source |
EPIC3MicroPerm Workshop, Potsdam, Germany. November 8-10, 2010 p. |
op_relation |
Barbier, B. and Wagner, D. (2010) Microbial diversity in degrading permafrost ecosystems and the implications for anaerobic carbon degradation. , MicroPerm Workshop, Potsdam, Germany. November 8-10 . hdl:10013/epic.36345 |
_version_ |
1766343234593751040 |