All scientific data collected by the Australian Antarctic program (AAp) are eventually described in the Catalogue of Australian Antarctic and Subantarctic Metadata (CAASM). CAASM can be used to search through AAp data descriptions, and it also provides links to access publicly available datasets, which can either be immediately downloaded or obtained from the Australian Antarctic Data Centre (AADC).

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Citation
Deppeler, S.L., Schulz, K.G., Hancock, A., Pascoe, P., Mckinlay, J., Davidson, A.T. (2018, updated 2018) Data for manuscript 'Ocean acidification reduces growth and grazing of Antarctic heterotrophic nanoflagellates' Australian Antarctic Data Centre - doi:10.4225/15/5b234e4bb9313
Title
Data for manuscript 'Ocean acidification reduces growth and grazing of Antarctic heterotrophic nanoflagellates'
Data Centre
Australian Antarctic Data Centre, Australia
DOI
doi:10.4225/15/5b234e4bb9313
Created Date
2018-06-12
Revision Date
2018-06-12
Parent record
None

Description

This data set was collected from a ocean acidification minicosm experiment performed at Davis Station, Antarctica during the 2014/15 summer season. It includes:
- description of methods for all data collection and analyses.
- flow cytometry counts; autotrophic cells, heterotrophic nanoflagellates, and prokaryotes

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Purpose

One community-level study has been performed in Antarctic waters on a natural coastal marine microbial community at Davis Station, Antarctica during the 2008/09 summer season. This study in Prydz Bay, East Antarctica reported declines in primary and bacterial productivity when CO2 concentration exceeded 780 micro atm. A shift in community composition was also observed, with increased abundance of small picoeukaryotes and a decline in large diatoms.

Based on the results of this previous study, a natural community of Antarctic marine microbes from Prydz Bay, East Antarctica were exposed to a range of CO2 concentrations in 650 l minicosms to simulate possible future ocean conditions up to the year ∼2200. The abundance of autotrophic cells, heterotrophic nanoflagellates, and prokaryotes was examined at CO2 concentrations between 343 to 1641 μatm to determine whether tipping points existed, above which CO2 concentration changed the abundance of the microbial community.

Quality

The minicosm experimental design measured the microbial community growth in six unreplicated fCO2 treatments. Therefore, sub-samples from each minicosm were within-treatment pseudoreplicates and thus, results of statistical analysis must be interpreted conservatively.

Access

This data set is to be publicly available upon publication of the manuscript 'Ocean acidification reduces growth and grazing of Antarctic heterotrophic nanoflagellates'

Temporal Coverages

Spatial Coverages

Science Keywords

Additional Keywords

  • OCEAN ACIDIFICATION
  • MINICOSM

Locations

  • GEOGRAPHIC REGION > POLAR

Platforms

  • LABORATORY
  • FIELD INVESTIGATION

Instruments

  • FLOW CYTOMETRY

Researchers

  • deppeler, stacy (INVESTIGATOR,TECHNICAL CONTACT,DIF AUTHOR)
  • schulz, kai (INVESTIGATOR)
  • hancock, alyce (INVESTIGATOR)
  • pascoe, penelope (INVESTIGATOR)
  • mckinlay, john (INVESTIGATOR)
  • davidson, andrew (INVESTIGATOR)

Use Constraints

This data set conforms to the PICCCBY Attribution License (http://creativecommons.org/licenses/by/3.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4026_Flow_Cytometry when using these data.

Polar Information Commons's PICCCBY license.Creative Commons License