Landscape topography structures the soil microbiome in arctic polygonal tundra
In the Arctic, environmental factors governing microbial degradation of soil carbon (C) in active layer and permafrost are poorly understood. Here we determined the functional potential of soil microbiomes horizontally and vertically across a cryoperturbed polygonal landscape in Alaska. With compara...
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ftcdlib:oai:escholarship.org:ark:/13030/qt9tk1s8qz 2024-06-23T07:49:40+00:00 Landscape topography structures the soil microbiome in arctic polygonal tundra Taş, Neslihan Prestat, Emmanuel Wang, Shi Wu, Yuxin Ulrich, Craig Kneafsey, Timothy Tringe, Susannah G Torn, Margaret S Hubbard, Susan S Jansson, Janet K 777 2018-01-01 application/pdf https://escholarship.org/uc/item/9tk1s8qz unknown eScholarship, University of California qt9tk1s8qz https://escholarship.org/uc/item/9tk1s8qz public Nature Communications, vol 9, iss 1 Microbiology Biological Sciences Environmental Sciences Human Genome Genetics Climate Action Arctic Regions Bacteria Carbon Climate Change Methane Microbiota Permafrost Soil Soil Microbiology Tundra article 2018 ftcdlib 2024-06-12T00:34:59Z In the Arctic, environmental factors governing microbial degradation of soil carbon (C) in active layer and permafrost are poorly understood. Here we determined the functional potential of soil microbiomes horizontally and vertically across a cryoperturbed polygonal landscape in Alaska. With comparative metagenomics, genome binning of novel microbes, and gas flux measurements we show that microbial greenhouse gas (GHG) production is strongly correlated to landscape topography. Active layer and permafrost harbor contrasting microbiomes, with increasing amounts of Actinobacteria correlating with decreasing soil C in permafrost. While microbial functions such as fermentation and methanogenesis were dominant in wetter polygons, in drier polygons genes for C mineralization and CH4 oxidation were abundant. The active layer microbiome was poised to assimilate N and not to release N2O, reflecting low N2O flux measurements. These results provide mechanistic links of microbial metabolism to GHG fluxes that are needed for the refinement of model predictions. Article in Journal/Newspaper Arctic Climate change permafrost Tundra Alaska University of California: eScholarship Arctic |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Microbiology Biological Sciences Environmental Sciences Human Genome Genetics Climate Action Arctic Regions Bacteria Carbon Climate Change Methane Microbiota Permafrost Soil Soil Microbiology Tundra |
spellingShingle |
Microbiology Biological Sciences Environmental Sciences Human Genome Genetics Climate Action Arctic Regions Bacteria Carbon Climate Change Methane Microbiota Permafrost Soil Soil Microbiology Tundra Taş, Neslihan Prestat, Emmanuel Wang, Shi Wu, Yuxin Ulrich, Craig Kneafsey, Timothy Tringe, Susannah G Torn, Margaret S Hubbard, Susan S Jansson, Janet K Landscape topography structures the soil microbiome in arctic polygonal tundra |
topic_facet |
Microbiology Biological Sciences Environmental Sciences Human Genome Genetics Climate Action Arctic Regions Bacteria Carbon Climate Change Methane Microbiota Permafrost Soil Soil Microbiology Tundra |
description |
In the Arctic, environmental factors governing microbial degradation of soil carbon (C) in active layer and permafrost are poorly understood. Here we determined the functional potential of soil microbiomes horizontally and vertically across a cryoperturbed polygonal landscape in Alaska. With comparative metagenomics, genome binning of novel microbes, and gas flux measurements we show that microbial greenhouse gas (GHG) production is strongly correlated to landscape topography. Active layer and permafrost harbor contrasting microbiomes, with increasing amounts of Actinobacteria correlating with decreasing soil C in permafrost. While microbial functions such as fermentation and methanogenesis were dominant in wetter polygons, in drier polygons genes for C mineralization and CH4 oxidation were abundant. The active layer microbiome was poised to assimilate N and not to release N2O, reflecting low N2O flux measurements. These results provide mechanistic links of microbial metabolism to GHG fluxes that are needed for the refinement of model predictions. |
format |
Article in Journal/Newspaper |
author |
Taş, Neslihan Prestat, Emmanuel Wang, Shi Wu, Yuxin Ulrich, Craig Kneafsey, Timothy Tringe, Susannah G Torn, Margaret S Hubbard, Susan S Jansson, Janet K |
author_facet |
Taş, Neslihan Prestat, Emmanuel Wang, Shi Wu, Yuxin Ulrich, Craig Kneafsey, Timothy Tringe, Susannah G Torn, Margaret S Hubbard, Susan S Jansson, Janet K |
author_sort |
Taş, Neslihan |
title |
Landscape topography structures the soil microbiome in arctic polygonal tundra |
title_short |
Landscape topography structures the soil microbiome in arctic polygonal tundra |
title_full |
Landscape topography structures the soil microbiome in arctic polygonal tundra |
title_fullStr |
Landscape topography structures the soil microbiome in arctic polygonal tundra |
title_full_unstemmed |
Landscape topography structures the soil microbiome in arctic polygonal tundra |
title_sort |
landscape topography structures the soil microbiome in arctic polygonal tundra |
publisher |
eScholarship, University of California |
publishDate |
2018 |
url |
https://escholarship.org/uc/item/9tk1s8qz |
op_coverage |
777 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change permafrost Tundra Alaska |
genre_facet |
Arctic Climate change permafrost Tundra Alaska |
op_source |
Nature Communications, vol 9, iss 1 |
op_relation |
qt9tk1s8qz https://escholarship.org/uc/item/9tk1s8qz |
op_rights |
public |
_version_ |
1802640254442668032 |