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Armand, Leanne K; Crosta, Xavier; Romero, Oscar E; Pichon, Jean-Jacques (2005): Relative abundance of diatom species in surface samples from the Southern Ocean, Sea ice species. PANGAEA,, Supplement to: Armand, LK et al. (2005): The biogeography of major diatom taxa in Southern Ocean sediments: 1. Ice related species. Palaeogeography, Palaeoclimatology, Palaeoecology, 223(1-2), 93-126,

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Diatoms from 228 Southern Ocean core-top sediment samples were examined to determine the geographic distributions of 32 major diatom species/taxa preserved in the sediments of three zonally-distinct regions; Sea Ice, Open Ocean and the Tropical/Subtropical. In the first of three papers, 14 species/taxa occurring in the region where sea ice covers the ocean surface on an annual basis are geographically documented. Comparisons are drawn between the diatom abundances on the sea floor, sea ice parameters (annual duration and concentration in February and September) and February sea-surface temperature. Such parameters are commonly used in reconstructing past oceanographic conditions in the Sea Ice and Open Ocean zones. Analysis of the geographic patterns and sea-surface parameter correlations reveals species-specific distributions regulated primarily by sea ice coverage and sea-surface temperature, which support the use of diatom remains for the estimation of these past sea-surface environmental parameters. Comparison with reliable accounts of the 14 species from the sediments or plankton also provides the first glimpses into species-specific ecology and habitat linkages.
Median Latitude: -38.664575 * Median Longitude: -22.036029 * South-bound Latitude: -44.516800 * West-bound Longitude: -24.248500 * North-bound Latitude: -31.950000 * East-bound Longitude: -17.340000
Date/Time Start: 2000-02-17T05:54:00 * Date/Time End: 2000-03-04T02:21:00
Minimum DEPTH, sediment/rock: m * Maximum DEPTH, sediment/rock: m
GeoB6402-9 * Latitude: -39.742700 * Longitude: -22.756500 * Date/Time: 2000-02-17T05:54:00 * Elevation: -3878.0 m * Recovery: 0.43 m * Location: Central South Atlantic * Campaign: M46/4 * Basis: Meteor (1986) * Method/Device: Giant box corer (GKG) * Comment: 3 x bottom contact
GeoB6403-4 * Latitude: -40.013300 * Longitude: -23.365200 * Date/Time: 2000-02-17T20:49:00 * Elevation: -4226.0 m * Recovery: 0.14 m * Location: Central South Atlantic * Campaign: M46/4 * Basis: Meteor (1986) * Method/Device: MultiCorer (MUC) * Comment: 4 large, 4 small tubes filled
GeoB6404-3 * Latitude: -41.505800 * Longitude: -23.464800 * Date/Time: 2000-02-18T10:17:00 * Elevation: -4223.0 m * Recovery: 0.11 m * Location: Central South Atlantic * Campaign: M46/4 * Basis: Meteor (1986) * Method/Device: MultiCorer (MUC) * Comment: 4 large, 4 small tubes filled, CTD at 50 m
Depth=Surface sediment 0-1 cm
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEvent
2Latitude of eventLatitude
3Longitude of eventLongitude
4Elevation of eventElevationm
5DEPTH, sediment/rockDepth sedmGeocode
6Actinocyclus actinochilusA. actinochilus%Romero, Oscar ECounting, diatoms
7Chaetoceros affinis, resting sporesC. affinis rs%Romero, Oscar ECounting, diatoms
8Chaetoceros constrictus, resting sporesC. constrictus rs%Romero, Oscar ECounting, diatoms
9Chaetoceros coronatus, resting sporesC. coronatus rs%Romero, Oscar ECounting, diatoms
10Chaetoceros debilis, resting sporesC. debilis rs%Romero, Oscar ECounting, diatoms
11Chaetoceros diadema, resting sporesC. diadema rs%Romero, Oscar ECounting, diatoms
12Chaetoceros lorenzianus, resting sporesC. lorenzianus rs%Romero, Oscar ECounting, diatoms
13Chaetoceros radicans, resting sporesC. radicans rs%Romero, Oscar ECounting, diatoms
14Fragilariopsis separandaF. separanda%Romero, Oscar ECounting, diatoms
15Porosira pseudodenticulataP. pseudodenticulata%Romero, Oscar ECounting, diatoms
16Stellarima microtriasS. microtrias%Romero, Oscar ECounting, diatoms
17Thalassiosira antarcticaT. antarctica%Romero, Oscar ECounting, diatomsvegetative cell
18Thalassiosira antarcticaT. antarctica%Romero, Oscar ECounting, diatomsspore
19Thalassiosira tumidaT. tumida%Romero, Oscar ECounting, diatoms
336 data points

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