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Oceanographic profile chlorophyll a and zooplankton biomass measurements collected using bottle in the Southern Oceans from 1995 to 1996 (NCEI Accession 0000980)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: May 06, 2026 at 12:43 AM | Dataset Last Updated: February 10, 2026 at 12:00 AM
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.

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Complete Metadata
@type dcat:Dataset
accessLevel non-public
contactPoint 
                                            {
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describedByType application/octet-steam
description 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.
distribution 
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identifier https://data.noaa.gov/waf/NOAA/NESDIS/ncei/accessions/iso/xml/0000980.xml
issued 2003-04-08T00:00:00.000+00:00
keyword 
                                            [
  "0000980",
  "bacteria",
  "CHLOROPHYLL A",
  "bottle",
  "biological",
  "plankton",
  "B.I.O. Hespérides",
  "Institut de Ciències del Mar - Madrid",
  "Institut de Ciències del Mar - Madrid",
  "FRUELA",
  "South Atlantic Ocean",
  "Southern Ocean",
  "oceanography",
  "DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce",
  "ES/CSIC/ICM > Institut de Ciencies del Mar, Consejo Superior de Investigaciones Cientificas, Espana",
  "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > BACTERIA/ARCHAEA",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CHLOROPHYLL",
  "HESPERIDES (call sign: EBBW, ICES code: 29HE)",
  "OCEAN > ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN",
  "OCEAN > SOUTHERN OCEAN"
]
landingPage https://www.ncei.noaa.gov/contact
language 
                                            []
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2026-02-10T00:00:00.000+00:00
publisher 
                                            {
  "name": "NOAA National Centers for Environmental Information",
  "@type": "org:Organization"
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rights otherRestrictions
spatial -59.43,-64.96,-65.79,-61.96
temporal 1995-12-04T00:00:00+00:00/1996-02-03T00:00:00+00:00
title Oceanographic profile chlorophyll a and zooplankton biomass measurements collected using bottle in the Southern Oceans from 1995 to 1996 (NCEI Accession 0000980)

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