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Andruleit, Harald; Stäger, Sabine; Rogalla, U; Cepek, Pavel (2003): Abundance of living coccolithophores in the northern Arabian Sea (Table 2). PANGAEA,, Supplement to: Andruleit, H et al. (2003): Living coccolithophores in the northern Arabian Sea: ecological tolerances and environmental control. Marine Micropaleontology, 49(1-2), 157-181,

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The present study was conducted to provide information about living coccolithophores from the northern Arabian Sea as potential proxies in palaeoceanographic studies. In all, 71 plankton samples from 16 stations collected in September 1993 were analysed for their contents of living coccolithophores. Absolute abundances range from less than 400 coccospheres per litre in surface waters to 35 000 spheres per litre at intermediate water depths. From 49 identified taxa, nine species contribute significant cell numbers of more than 2000 coccospheres per litre and comprise more than 10% of the communities in at least one sample. Important species are (in approximate order of cell abundances): Gephyrocapsa oceanica, Florisphaera profunda, Oolithotus antillarum, Calciosolenia murrayi, Umbellosphaera irregularis, Emiliania huxleyi, Umbellosphaera tenuis, Calciopappus rigidus, and Algirosphaera robusta. At most profiles, a vertical succession of coccolithophore species was found. Calciosolenia murrayi and C. rigidus were restricted to surface waters, whereas high numbers of F. profunda and A. robusta occurred at depths below 40 m. The coccolithophore communities reflected the local oceanographic situation and seemed to be more dependent on mixed layer depth and nutrient availability than on temperature and salinity changes. Additionally, synecologic competition with diatoms in part controlled the species composition and generally reduced the abundance of coccolithophores. Synecological and ecological tolerances of species were discussed with the help of cluster analysis.
Median Latitude: 24.097438 * Median Longitude: 65.504250 * South-bound Latitude: 22.641000 * West-bound Longitude: 64.253000 * North-bound Latitude: 24.953000 * East-bound Longitude: 66.914000
Date/Time Start: 1993-09-03T00:00:00 * Date/Time End: 1993-09-30T00:00:00
Minimum DEPTH, water: m * Maximum DEPTH, water: 100 m
SO90_5MS * Latitude: 24.638000 * Longitude: 64.290000 * Date/Time: 1993-09-03T00:00:00 * Elevation: -1648.0 m * Location: Arabian Sea * Campaign: SO90 (PAKOMIN) * Basis: Sonne * Method/Device: Multisonde (MS) * Comment: GPS,9 water
SO90_8MS * Latitude: 24.858000 * Longitude: 64.303000 * Date/Time: 1993-09-03T00:00:00 * Elevation: -822.0 m * Location: Arabian Sea * Campaign: SO90 (PAKOMIN) * Basis: Sonne * Method/Device: Multisonde (MS) * Comment: GPS,10 water
SO90_16MS * Latitude: 24.953000 * Longitude: 64.253000 * Date/Time: 1993-09-04T00:00:00 * Elevation: -439.0 m * Location: Arabian Sea * Campaign: SO90 (PAKOMIN) * Basis: Sonne * Method/Device: Multisonde (MS) * Comment: GPS,10 water
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEvent
2DEPTH, waterDepth watermGeocode
3Algirosphaera robustaA. robusta#/lAndruleit, Harald
4Calciopappus rigidusC. rigidus#/lAndruleit, Harald
5Calciosolenia murrayiC. murrayi#/lAndruleit, Harald
6Emiliania huxleyiE. huxleyi#/lAndruleit, Harald
7Florisphaera profundaF. profunda#/lAndruleit, Harald
8Gephyrocapsa oceanicaG. oceanica#/lAndruleit, Harald
9Oolithotus antillarumO. antillarum#/lAndruleit, Harald
10SyracosphaeraceaeSyracosph#/lAndruleit, Harald
11Umbellosphaera tenuisU. tenuis#/lAndruleit, Harald
12Umbellosphaera irregularisU. irregularis#/lAndruleit, Harald
13Nanoplankton, otherNanopl oth#/lAndruleit, Harald
14NanoplanktonNanopl#Andruleit, Haraldcounts
852 data points

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