ArticleFrontiers in microbiology2016
Biogeochemical and Microbial Variation across 5500 km of Antarctic Surface Sediment Implicates Organic Matter as a Driver of Benthic Community Structure.
Article in Frontiers in microbiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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19 citing papers in PubMed, 62 citations in OpenAlex.
- Deep-sea Microbial Dataset of the Antarctic Ocean (dsMDAO): A high-resolution deep-sea microbial dataset of the Antarctic Ocean reveals potential for taxonomic and functional diversity.Microbial genomics · 2026Article
- Nutrient amendments enrich microbial hydrocarbon degradation metagenomic potential in freshwater coastal wetland microcosm experiments.Applied and environmental microbiology · 2025Article
- Article
- Community Composition and Functional Characterization of Microorganisms in Surface Sediment of the New Britain Trench.Current microbiology · 2024Article
- The Impact of Sea Ice Cover on Microbial Communities in Antarctic Shelf Sediments.Microorganisms · 2023Article
- Microbial Community Composition of the Antarctic Ecosystems: Review of the Bacteria, Fungi, and Archaea Identified through an NGS-Based Metagenomics Approach.Life (Basel, Switzerland) · 2022Review
- Metabarcoding the Antarctic Peninsula biodiversity using a multi-gene approach.ISME communications · 2022Article
- Local Environmental Conditions Promote High Turnover Diversity of Benthic Deep-Sea Fungi in the Ross Sea (Antarctica).Journal of fungi (Basel, Switzerland) · 2022Article
- Metagenomics of Antarctic Marine Sediment Reveals Potential for Diverse Chemolithoautotrophy.mSphere · 2021Article
- Sea Ice Dynamics Drive Benthic Microbial Communities in McMurdo Sound, Antarctica.Frontiers in microbiology · 2021Article
- Bacterioplankton reveal years-long retention of Atlantic deep-ocean water by the Tropic Seamount.Scientific reports · 2020Article
- Impact of Terrestrial Input on Deep-Sea Benthic Archaeal Community Structure in South China Sea Sediments.Frontiers in microbiology · 2020Article
- Culture-Dependent and -Independent Analyses Reveal the Diversity, Structure, and Assembly Mechanism of Benthic Bacterial Community in the Ross Sea, Antarctica.Frontiers in microbiology · 2019Article
- Microbial Community Diversity Within Sediments from Two Geographically Separated Hadal Trenches.Frontiers in microbiology · 2019Article
- Sediment Depth-Dependent Spatial Variations of Bacterial Communities in Mud Deposits of the Eastern China Marginal Seas.Frontiers in microbiology · 2018Article
- Identification of Microbial Dark Matter in Antarctic Environments.Frontiers in microbiology · 2018Article
- A Mosaic of Geothermal and Marine Features Shapes Microbial Community Structure on Deception Island Volcano, Antarctica.Frontiers in microbiology · 2018Article
- Response of Bacterial Communities to Different Detritus Compositions in Arctic Deep-Sea Sediments.Frontiers in microbiology · 2017Article
- High Prevalence of Gammaproteobacteria in the Sediments of Admiralty Bay and North Bransfield Basin, Northwestern Antarctic Peninsula.Frontiers in microbiology · 2017Article
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Authors and funding
8 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Western Antarctica, one of the fastest warming locations on Earth, is a unique environment that is underexplored with regards to biodiversity. Although pelagic microbial communities in the Southern Ocean and coastal Antarctic waters have been well-studied, there are fewer investigations of benthic communities and most have a focused geographic range. We sampled surface sediment from 24 sites across a 5500 km region of Western Antarctica (covering the Ross Sea to the Weddell Sea) to examine relationships between microbial communities and sediment geochemistry. Sequencing of the 16S and 18S rRNA genes showed microbial communities in sediments from the Antarctic Peninsula (AP) and Western Antarctica (WA), including the Ross, Amundsen, and Bellingshausen Seas, could be distinguished by correlations with organic matter concentrations and stable isotope fractionation (total organic carbon; TOC, total nitrogen; TN, and δ(13)C). Overall, samples from the AP were higher in nutrient content (TOC, TN, and NH4 (+)) and communities in these samples had higher relative abundances of operational taxonomic units (OTUs) classified as the diatom, Chaetoceros, a marine cercozoan, and four OTUs classified as Flammeovirgaceae or Flavobacteria. As these OTUs were strongly correlated with TOC, the data suggests the diatoms could be a source of organic matter and the Bacteroidetes and cercozoan are grazers that consume the organic matter. Additionally, samples from WA have lower nutrients and were dominated by Thaumarchaeota, which could be related to their known ability to thrive as lithotrophs. This study documents the largest analysis of benthic microbial communities to date in the Southern Ocean, representing almost half the continental shoreline of Antarctica, and documents trophic interactions and coupling of pelagic and benthic communities. Our results indicate potential modifications in carbon sequestration processes related to change in community composition, identifying a prospective mechanism that links climate change to carbon availability.
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