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Ocean acidification impacts primary and bacterial production in Antarctic coastal waters during austral summer

Created 13/03/2025

Updated 13/03/2025

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Three experiments were performed at Davis Station, East Antarctica, 77 degrees 58' E, 68 degrees 35' S to determine the effects of ocean acidification on natural assemblages of Antarctica marine microbes (bacteria, viruses, phytoplankton and protozoa). Incubation tanks (6 * 650 L minicosms) were filled on the 30/12/08, 20/01/09 and 09/02/09 with sea water that was filtered through 200 microns mesh to remove metazoan grazers. The pH of each tank was adjusted by adding calculated amounts of CO2 saturated sea water. Treatment concentrations were maintained daily and microbial communities incubated for up to 12 days. The three experiments spanned early-, mid- and late-summer, with CO2 treatments ranging from pre-industrial to post-2100. The Excel spreadsheet contains 3 tabs: Experiment 1 - Early Summer Experiment 2 - Mid Summer Experiment 3 - Late Summer Within each tab there are measurements for: pCO2, dissolved inorganic carbon, Pmax, alpha, Ek, chl a, gross primary production (14C), bacterial production (14C), cell-specific bacterial productivity, bacterial abundance, dissolved organic carbon, particulate organic carbon, heterotrophic nanoflagellates, nitrate+nitrite, phosphate, silicate, ammonium, net community production, respiration, gross primary production (O2), photosynthesis:respiration ratios. Units for each measurement supplied within. Please see the following paper for interpretation of this data: Westwood, K.J., Thomson, P.G., van den Enden, R., Maher, L., Wright, S.W., Davidson, A.T. (2018). Ocean acidification impacts primary and bacterial production in Antarctic coastal waters during austral summer. Journal of Experimental Marine Biology and Ecology 498: 46-60, doi: 10.1016/j.jembe.2017.11.003.

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Title Ocean acidification impacts primary and bacterial production in Antarctic coastal waters during austral summer
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/126a5222-34db-45db-822e-7c6a92e3c173
Contact Point
CSIRO Oceans & Atmosphere
metadata@aad.gov.au
Reference Period 30/12/2008 - 24/02/2009
Geospatial Coverage {"type": "Polygon", "coordinates": [[[75.41016, -69.50377], [80.41992, -69.50377], [80.41992, -67.50857], [75.41016, -67.50857], [75.41016, -69.50377]]]}
Data Portal data.gov.au

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This dataset was originally found on data.gov.au "Ocean acidification impacts primary and bacterial production in Antarctic coastal waters during austral summer". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/ocean-acidification-impacts-primary-and-bacterial-production-in-antarctic-coastal-waters-during

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