Paulsen, Maria Lund; Riisgaard, Karen; Nielsen, Torkel Gissel (2014): Abundance of bacteria and virus during the METEOR cruise M87/1 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.839415
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Abstract:
In temperate, subpolar and polar marine systems, the classical perception that bacteria are carbon limited by end of winter and respond in activity and abundance to the production of new carbon during the diatom spring bloom and post bloom. Contrary to this view, we here document an strong increase in bacterial abundance and activity (latter measured by increasing high nuclei acid (HNA) to low nuclei acid (LNA) bacteria ratio) during the winter-spring transition, where phytoplankton smaller than 10 µm dominate. Further DNA-virus were enumerated and revealed the virus to bacteria ratio (VBR) to be decreasing during winter-spring transition, indicating that the virus did not increase in number accordingly to bacteria. During repeated visits to stations in the deep Icelandic and the Norwegian Basins and the shallow Shetland Shelf (26 March to 29 April 2012), we investigated the abundance of bacteria and the succession of HNA:LNA bacteria and VBR. Water samples were collected from CTD rosette .10 L Niskin bottles and fixed in glutaraldehyde (final conc. 5%), flash frozen in liquid Nitrogen and stored at -80°C until analysis.
Project(s):
Basin Scale Analysis, Synthesis and Integration (EURO-BASIN)
Funding:
Seventh Framework Programme (FP7), grant/award no. 264933: Basin Scale Analysis, Synthesis and Integration
Coverage:
Median Latitude: 61.684296 * Median Longitude: -5.505815 * South-bound Latitude: 60.332500 * West-bound Longitude: -11.027500 * North-bound Latitude: 62.833667 * East-bound Longitude: 1.000167
Date/Time Start: 2012-03-26T03:43:00 * Date/Time End: 2012-04-29T03:41:00
Minimum DEPTH, water: 5 m * Maximum DEPTH, water: 1339 m
Event(s):
M87/1_421-1 (Station 1) * Latitude Start: 61.500333 * Longitude Start: -10.999833 * Latitude End: 61.500000 * Longitude End: -10.999833 * Date/Time Start: 2012-03-26T03:43:00 * Date/Time End: 2012-03-26T04:59:00 * Elevation: 0.0 m * Campaign: M87/1a (Deep Convection Cruise) * Basis: Meteor (1986) * Method/Device: CTD/Rosette (CTD-RO)
M87/1_424-1 (Station 1) * Latitude Start: 61.500000 * Longitude Start: -11.000000 * Latitude End: 61.500000 * Longitude End: -11.000000 * Date/Time Start: 2012-03-26T12:23:00 * Date/Time End: 2012-03-26T13:41:00 * Elevation: 0.0 m * Campaign: M87/1a (Deep Convection Cruise) * Basis: Meteor (1986) * Method/Device: CTD/Rosette (CTD-RO)
M87/1_440-1 (Station 1) * Latitude Start: 61.500000 * Longitude Start: -10.999833 * Latitude End: 61.500000 * Longitude End: -10.999833 * Date/Time Start: 2012-03-28T04:06:00 * Date/Time End: 2012-03-28T05:30:00 * Elevation: 0.0 m * Campaign: M87/1a (Deep Convection Cruise) * Basis: Meteor (1986) * Method/Device: CTD/Rosette (CTD-RO)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Optional event label | Event 2 | ||||
| 3 | Latitude of event | Latitude | ||||
| 4 | Longitude of event | Longitude | ||||
| 5 | Date/Time of event | Date/Time | ||||
| 6 | DEPTH, water | Depth water | m | Geocode | ||
| 7 | Bacteria | Bact | #/ml | Paulsen, Maria Lund | FACSCalibur flow-cytometer (Becton Dickinson) | |
| 8 | Viral abundance | Virus | #/ml | Paulsen, Maria Lund | FACSCalibur flow-cytometer (Becton Dickinson) | |
| 9 | High nucleic acid bacteria/low nucleic acid bacteria ratio | HNA/LNA | Paulsen, Maria Lund | FACSCalibur flow-cytometer (Becton Dickinson) | ||
| 10 | Virus/bacteria ratio | VBR | Paulsen, Maria Lund | FACSCalibur flow-cytometer (Becton Dickinson) |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
697 data points