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Removal of Exogenous Materials from the Outer Portion of Frozen Cores to Investigate the Ancient Biological Communities Harbored Inside
Published on: July 3, 2016
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The subzero microbiome: microbial activity in frozen and thawing soils
Mrinalini P Nikrad1, Lee J Kerkhof2, Max M Häggblom3
1Department of Biochemistry and Microbiology.
FEMS Microbiology Ecology
|April 24, 2016
Summary
Cold-adapted microbes in frozen soils are active and influence global carbon cycles. Understanding their response to thawing is crucial for predicting climate change feedback.
Area of Science:
- Microbiology
- Environmental Science
- Climate Science
Background:
- Earth's biosphere is largely cold, hosting psychrophilic microorganisms with unique adaptations.
- Microbial life persists in subzero temperatures, impacting ecosystem carbon and nitrogen cycles.
- The response of these microbes to climate warming and thawing permafrost is poorly understood.
Purpose of the Study:
- To review microbial activity in seasonally frozen soils and permafrost.
- To highlight the importance of understanding microbial roles in climate change.
- To inform future predictions of carbon release from thawing soils.
Main Methods:
- Literature review of studies on microbial community dynamics in frozen environments.
- Analysis of research on microbial functional groups and their activity changes.
- Examination of in situ and laboratory-based characterization of microbial macromolecules.
Main Results:
- Increasing temperatures and moisture enhance microbial activity and greenhouse gas efflux.
- Microbial contributions to carbon flux in thawing soils pose a substantial climate feedback risk.
- Existing studies provide a foundation but gaps remain in understanding microbial responses.
Conclusions:
- A comprehensive understanding of microbial activity in frozen soils is essential.
- Predicting future carbon release and climate change requires detailed microbiological insights.
- Further research is needed to model the impact of thawing permafrost on global processes.
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