Microbial communities and processes in Arctic permafrost environments
In polar regions, huge layers of frozen ground, termed permafrost, are formed. Permafrost covers more than 25 % of the land surface and significant parts of the coastal sea shelfs. Its habitats are controlled by extreme climate and terrain conditions. Particularly, the seasonal freezing and thawing...
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ftawi:oai:epic.awi.de:16928 2023-05-15T14:25:41+02:00 Microbial communities and processes in Arctic permafrost environments Wagner, Dirk 2008 application/pdf https://epic.awi.de/id/eprint/16928/ https://epic.awi.de/id/eprint/16928/1/Wag2007d.pdf https://hdl.handle.net/10013/epic.28194 https://hdl.handle.net/10013/epic.28194.d001 unknown https://epic.awi.de/id/eprint/16928/1/Wag2007d.pdf https://hdl.handle.net/10013/epic.28194.d001 Wagner, D. (2008) Microbial communities and processes in Arctic permafrost environments , Microbiology of Extreme Soils, Soil Biology 13, Springer-Verlag Berlin . hdl:10013/epic.28194 EPIC3Microbiology of Extreme Soils, Soil Biology 13, Springer-Verlag Berlin, pp. 133-154 Inbook peerRev 2008 ftawi 2021-12-24T15:31:56Z In polar regions, huge layers of frozen ground, termed permafrost, are formed. Permafrost covers more than 25 % of the land surface and significant parts of the coastal sea shelfs. Its habitats are controlled by extreme climate and terrain conditions. Particularly, the seasonal freezing and thawing in the upper active layer of permafrost leads to distinct gradients in temperature and geochemistry. Microorganisms in permafrost environments have to survive extremely cold temperatures, freeze-thaw cycles, desiccation and starvation under long-lasting background radiation over geological time scales. Although the biology of permafrost microorganisms remains relatively unexplored, recent findings show that microbial communities in this extreme environment are composed by members of all three domains of life (Archaea, Bacteria, Eukarya), with a total biomass comparable to temperate soil ecosystems. This chapter describes the environmental conditions of permafrost and reviews recent studies on microbial processes and diversity in permafrost-affected soils as well as the role and significance of microbial communities with respect to global biogeochemical cycles. Book Part Arctic Arctic permafrost Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
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description |
In polar regions, huge layers of frozen ground, termed permafrost, are formed. Permafrost covers more than 25 % of the land surface and significant parts of the coastal sea shelfs. Its habitats are controlled by extreme climate and terrain conditions. Particularly, the seasonal freezing and thawing in the upper active layer of permafrost leads to distinct gradients in temperature and geochemistry. Microorganisms in permafrost environments have to survive extremely cold temperatures, freeze-thaw cycles, desiccation and starvation under long-lasting background radiation over geological time scales. Although the biology of permafrost microorganisms remains relatively unexplored, recent findings show that microbial communities in this extreme environment are composed by members of all three domains of life (Archaea, Bacteria, Eukarya), with a total biomass comparable to temperate soil ecosystems. This chapter describes the environmental conditions of permafrost and reviews recent studies on microbial processes and diversity in permafrost-affected soils as well as the role and significance of microbial communities with respect to global biogeochemical cycles. |
format |
Book Part |
author |
Wagner, Dirk |
spellingShingle |
Wagner, Dirk Microbial communities and processes in Arctic permafrost environments |
author_facet |
Wagner, Dirk |
author_sort |
Wagner, Dirk |
title |
Microbial communities and processes in Arctic permafrost environments |
title_short |
Microbial communities and processes in Arctic permafrost environments |
title_full |
Microbial communities and processes in Arctic permafrost environments |
title_fullStr |
Microbial communities and processes in Arctic permafrost environments |
title_full_unstemmed |
Microbial communities and processes in Arctic permafrost environments |
title_sort |
microbial communities and processes in arctic permafrost environments |
publishDate |
2008 |
url |
https://epic.awi.de/id/eprint/16928/ https://epic.awi.de/id/eprint/16928/1/Wag2007d.pdf https://hdl.handle.net/10013/epic.28194 https://hdl.handle.net/10013/epic.28194.d001 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic permafrost |
genre_facet |
Arctic Arctic permafrost |
op_source |
EPIC3Microbiology of Extreme Soils, Soil Biology 13, Springer-Verlag Berlin, pp. 133-154 |
op_relation |
https://epic.awi.de/id/eprint/16928/1/Wag2007d.pdf https://hdl.handle.net/10013/epic.28194.d001 Wagner, D. (2008) Microbial communities and processes in Arctic permafrost environments , Microbiology of Extreme Soils, Soil Biology 13, Springer-Verlag Berlin . hdl:10013/epic.28194 |
_version_ |
1766298130998886400 |