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Antarctic Peninsula Bacterioplankton 16S rRNA gene surveys and metagenomes from Winter 2002 and Summer 2006.
Citation
Murray, AE and JJ Grzymski. 2007. Diversity and genomics of Antarctic marine microorganisms. Phil. Trans. Roy. Soc. Ser. B. 362:2259-2271. https://doi.org/10.15468/m2o4ab

Access data
Archived data
Availability: Creative Commons License This dataset is licensed under a Creative Commons Attribution 4.0 International License.

Description
Antarctic surface oceans are well-studied during summer when irradiance levels are high, sea ice is melting and primary productivity is at a maximum. Coincident with this timing, the bacterioplankton respond with significant increases in secondary productivity. Little is known about bacterioplankton in winter when darkness and sea-ice cover inhibit photoautotrophic primary production. more

We report here an environmental genomic and small subunit ribosomal RNA (SSU rRNA) analysis of winter and summer Antarctic Peninsula coastal seawater bacterioplankton. Intense inter-seasonal differences were reflected through shifts in community composition and functional capacities encoded in winter and summer environmental genomes with significantly higher phylogenetic and functional diversity in winter. In general, inferred metabolisms of summer bacterioplankton were characterized by chemoheterotrophy, photoheterotrophy and aerobic anoxygenic photosynthesis while the winter community included the capacity for bacterial and archaeal chemolithoautotrophy. Chemolithoautotrophic pathways were dominant in winter and were similar to those recently reported in global‘dark ocean’ mesopelagic waters. If chemolithoautotrophy is widespread in the Southern Ocean in winter, this process may be a previously unaccounted carbon sink and may help account for the unexplained anomalies in surface inorganic nitrogen content.
Geographic coverage: Samples were collected in the nearshore region of Anvers Island, near Palmer Station.
Taxonomic coverage: Plankton surveys of community structure were conducted of those organisms passing through a 1.6 micron glass fiber filter.
Sampling methods: Seawater was collected by submersible pump and filtered at the Station, see Grzymski et al. 2012 for details. Sanger sequence data was automatically assembled and chimera checked; metagenome sequence data was automatically annotated at the Joint Genome Institute (see Grzymski et al. 2012).

Scope
Themes:
Biology > Plankton
Keywords:
Marine/Coastal, 16s rrna gene, Bacterioplankton, Metadata, Rrna, Summer, Winter, Antarctica, Antarctic Peninsula, Anvers I., Palmer, Archaea, Bacteria

Geographical coverage
Antarctica, Antarctic Peninsula, Anvers I., Palmer [Marine Regions]

Temporal coverage
17 January 2002 - 28 February 2006

Taxonomic coverage
Archaea [WoRMS]
Bacteria [WoRMS]

Parameter
Molecular data

Contributors
Desert Research Institute; Northern Nevada Science Center Campus, moredata creator

Related datasets
Published in:
AntOBIS: Antarctic Ocean Biodiversity Information System, more
(Partly) included in:
RAS: Register of Antarctic Species, more

Dataset status: Completed
Data type: Metadata
Data origin: Research: field survey
Metadatarecord created: 2017-08-23
Information last updated: 2019-04-10
All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy