Oceanographic profile chlorophyll a and zooplankton biomass measurements collected using bottle in the Southern Oceans from 1995 to 1996 (NCEI Accession 0000980)
Variability in abundance of virus-like particles (VLP), VLP decay rates and prokaryotic mortality due to viral infection were determined in three Antarctic areas: Bellingshausen Sea, Bransfield Strait and Gerlache Strait, during December 1995 and February 1996. VLP abundance showed very small spatial variability in the three areas (7 X 10^6 - 2 X 10^7 VLP/ml). VLP abundance, on the other hand, decreased one order of magnitude from the surface to the bottom, in two stations where deep vertical profiles were sampled. Low seasonal variability in VLP abundance was found when comparing each area separately. Diel VLP variability was also very low. VLP abundance showed the lowest values when solar irradiation was maximal, in two of the three stations where diel cycles were examined. Viral decay rates (VDR) were determined using KCN in two kinds of experiments. Prokaryotic mortality due to viral infection was always higher than that due to bacterivores in the stations where both factors of prokaryotic mortality were measured. Viral infection accounted for all the prokaryotic heterotrophic production in Bellingshausen Sea and Gerlache Strait and for half of the prokaryotic heterotrophic production in Bransfield Strait. These high values of prokaryotic mortality due to viral infection are difficult to reconcile in nature, and more work is necessary to determine the mechanisms involved in the disappearance of viruses.
Dataset Citation
- Cite as: Institut de Ciències del Mar - Madrid (2003). Oceanographic profile chlorophyll a and zooplankton biomass measurements collected using bottle in the Southern Oceans from 1995 to 1996 (NCEI Accession 0000980). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0000980. Accessed [date].
Dataset Identifiers
ISO 19115-2 Metadata
gov.noaa.nodc:0000980
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Time Period | 1995-12-04 to 1996-02-03 |
Spatial Bounding Box Coordinates |
West: 60
East: 63
South: -64
North: -63
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Supplemental Information | digitized from NOAA Library "Guixa-Boixereu, Nuria, Dolors Vaque, Josep M. Gasol, Jamie Sanchez-Camara, and Carlos Pedros-Alio. 2002. Viral distribution and activity in Antarctic waters. Deep-Sea Research II, 49: 827-845. Spatial Coverage: Antarctic Ocean Temporal Coverage: December 4, 1995 - February 3, 1996 |
Purpose | This dataset is available to the public for a wide variety of uses including scientific research and analysis. |
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Last Modified: 2023-03-15T01:14:45Z
For questions about the information on this page, please email: ncei.info@noaa.gov
For questions about the information on this page, please email: ncei.info@noaa.gov