ArticleFrontiers in microbiology2015
Carbon-Fixation Rates and Associated Microbial Communities Residing in Arid and Ephemerally Wet Antarctic Dry Valley Soils.
Article in Frontiers in microbiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Bacterial community composition and function in different habitats in Antarctic Fildes region revealed by high-throughput sequencing.Frontiers in microbiology · 2025Article
- From single pioneers to complex pro- and eukaryotic microbial networks in soils along a glacier forefield chronosequence in continental Antarctica.Frontiers in microbiology · 2025Article
- Soils of two Antarctic Dry Valleys exhibit unique microbial community structures in response to similar environmental disturbances.Environmental microbiome · 2024Article
- Multiple energy sources and metabolic strategies sustain microbial diversity in Antarctic desert soils.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
- Influence of prokaryotic microorganisms on initial soil formation along a glacier forefield on King George Island, maritime Antarctica.Scientific reports · 2021Article
- The distribution and relative ecological roles of autotrophic and heterotrophic diazotrophs in the McMurdo Dry Valleys, Antarctica.FEMS microbiology ecology · 2020Article
- Microbial Mats of the McMurdo Dry Valleys, Antarctica: Oases of Biological Activity in a Very Cold Desert.Frontiers in microbiology · 2020Article
- Uncovering the Uncultivated Majority in Antarctic Soils: Toward a Synergistic Approach.Frontiers in microbiology · 2019Review
- Stochastic and Deterministic Effects of a Moisture Gradient on Soil Microbial Communities in the McMurdo Dry Valleys of Antarctica.Frontiers in microbiology · 2018Article
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7 authors.
Funding
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Abstract
Carbon-fixation is a critical process in severely oligotrophic Antarctic Dry Valley (DV) soils and may represent the major source of carbon in these arid environments. However, rates of C-fixation in DVs are currently unknown and the microorganisms responsible for these activities unidentified. In this study, C-fixation rates measured in the bulk arid soils (<5% moisture) ranged from below detection limits to ∼12 nmol C/cc/h. Rates in ephemerally wet soils ranged from ∼20 to 750 nmol C/cc/h, equating to turnover rates of ∼7-140 days, with lower rates in stream-associated soils as compared to lake-associated soils. Sequencing of the large subunit of RuBisCO (cbbL) in these soils identified green-type sequences dominated by the 1B cyanobacterial phylotype in both arid and wet soils including the RNA fraction of the wet soil. Red-type cbbL genes were dominated by 1C actinobacterial phylotypes in arid soils, with wetted soils containing nearly equal proportions of 1C (actinobacterial and proteobacterial signatures) and 1D (algal) phylotypes. Complementary 16S rRNA and 18S rRNA gene sequencing also revealed distinct differences in community structure between biotopes. This study is the first of its kind to examine C-fixation rates in DV soils and the microorganisms potentially responsible for these activities.
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