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Höll, Christine; Zonneveld, Karin A F; Willems, Helmut (2000): (Appendix B Table 2) Abundance of organic-walled dinoflagellate cysts of sediment core GeoB2204-2. PANGAEA,, Supplement to: Höll, C et al. (2000): Organic-walled dinoflagellate cyst assemblages in the tropical Atlantic Ocean and oceanographical changes over the last 140 ka. Palaeogeography, Palaeoclimatology, Palaeoecology, 160(1-2), 69-90,

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A palaeoceanographic reconstruction of the Late Quaternary tropical Atlantic Ocean has been made on the basis of dinoflagellate cyst associations of two sediment cores: the first core was recovered from below the highly productive waters of the equatorial divergence and the second from the oligotrophic western tropical Atlantic Ocean. Palaeoenvironmental indicators for productivity, sea surface temperature (SST) and salinity (SSS) based on selected organic-walled dinoflagellate cyst species have been established. On the basis of these palaeoenvironmental indicators, a strengthened intensity of the equatorial divergence in the eastern region during glacials and cold periods of interglacials has been reconstructed. The highest SST probably occurred around substage 5.5 and might refer to weakest upwelling intensity. In comparison, SST and SSS appear to have been generally higher in the western tropical Atlantic Ocean, with probably enhanced values during glacial intervals. Pronounced differences in accumulation rates and relative abundances of cysts formed by congruentidiacean dinoflagellates and relative abundances of oligotrophic cyst species between the eastern and the western region can be related to differences in palaeoproductivity, suggesting much higher values in the eastern area. The coherence between variation in frequency of the indicators for productivity and the boreal summer insolation and monsoon intensity in the eastern tropical Atlantic Ocean suggests an oceanographic reflection of regional intertropical, rather than boreal, dynamics.
Related to:
Höll, Christine (1998): Kalkige und organisch-wandige Dinoflagellaten-Zysten in Spätquartären Sedimenten des tropischen Atlantiks und ihre palökologische Auswertbarkeit. Berichte aus dem Fachbereich Geowissenschaften der Universität Bremen, 127, 121 pp, urn:nbn:de:gbv:46-ep000102467
Latitude: -8.528333 * Longitude: -34.021667
Date/Time Start: 1993-03-22T00:00:00 * Date/Time End: 1993-03-22T00:00:00
Minimum DEPTH, sediment/rock: 0.09 m * Maximum DEPTH, sediment/rock: 3.49 m
GeoB2204-2 * Latitude: -8.528333 * Longitude: -34.021667 * Date/Time: 1993-03-22T00:00:00 * Elevation: -2072.0 m * Recovery: 8.97 m * Location: Brazil Basin * Campaign: M23/3 * Basis: Meteor (1986) * Method/Device: Gravity corer (Kiel type) (SL) * Comment: weight on top of sediment
For organic-walled dinoflagellate cysts of core GeoB1105-4 see Höll et al. (1998) dataset: doi:10.1594/PANGAEA.55383
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DEPTH, sediment/rockDepth sedmGeocode
2BrigantediniumBrigantedinium#Höll, ChristineCounting, palynology
3Trinovantedinium capitatumT. capitatum#Höll, ChristineCounting, palynology
4Pentapharsodinium daleiP. dalei#Höll, ChristineCounting, palynology
5Bitectatodinium tepikienseB. tepikiense#Höll, ChristineCounting, palynology
6Tectatodinium pellitumT. pellitum#Höll, ChristineCounting, palynology
7Pyxidinopsis reticulataP. reticulata#Höll, ChristineCounting, palynology
8Polyspaeridium zoharyiP. zoharyi#Höll, ChristineCounting, palynology
9Tuberculodinium vancampoaeT. vancampoae#Höll, ChristineCounting, palynology
10Dalella chathamensisD. chathamensis#Höll, ChristineCounting, palynology
11Nematosphaeropsis labyrinthusN. labyrinthus#Höll, ChristineCounting, palynology
12Impagidinium sp.Impagidinium sp.#Höll, ChristineCounting, palynology
13Impagidinium aculeatumI. aculeatum#Höll, ChristineCounting, palynology
14Impagidinium paradoxumI. paradoxum#Höll, ChristineCounting, palynology
15Impagidinium patulumI. patulum#Höll, ChristineCounting, palynology
16Impagidinium plicatumI. plicatum#Höll, ChristineCounting, palynology
17Impagidinium sphaericumI. sphaericum#Höll, ChristineCounting, palynology
18Impagidinium strialatumI. strialatum#Höll, ChristineCounting, palynology
19Impagidinium velorumI. velorum#Höll, ChristineCounting, palynology
20Lingulodinium machaerophorumL. machaerophorum#Höll, ChristineCounting, palynology
21Protoceratium reticulatum longP. reticulatum long#Höll, ChristineCounting, palynology
22Operculodinium israelianumO. israelianum#Höll, ChristineCounting, palynology
23Operculodinium janducheneiO. janduchenei#Höll, ChristineCounting, palynology
24SpiniferitesSpiniferites#Höll, ChristineCounting, palynology
25Spiniferites bentoriiS. bentorii#Höll, ChristineCounting, palynology
26Spiniferites delicatusS. delicatus#Höll, ChristineCounting, palynology
27Spiniferites hyperacanthusS. hyperacanthus#Höll, ChristineCounting, palynology
28Spiniferites membranaceusS. membranaceus#Höll, ChristineCounting, palynology
29Spiniferites mirabilisS. mirabilis#Höll, ChristineCounting, palynology
30Spiniferites pachydermusS. pachydermus#Höll, ChristineCounting, palynology
31Spiniferites ramosusS. ramosus#Höll, ChristineCounting, palynology
32Dinoflagellate cyst reworkedDinofl cyst rew#Höll, ChristineCounting, palynology
33Sample massSamp mgHöll, Christinesee reference(s)
34Sample volumeSamp vollHöll, Christinesee reference(s)
35Slide volumeslide volmlHöll, Christinesee reference(s)
36Dinoflagellate cyst indeterminataDinofl indet#Höll, ChristineCounting, palynology
1225 data points

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