Höll, Christine; Zonneveld, Karin A F; Willems, Helmut (2000): (Appendix B Table 2) Abundance of organic-walled dinoflagellate cysts of sediment core GeoB2204-2 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.55384, 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, https://doi.org/10.1016/S0031-0182(00)00047-X
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Abstract:
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
Project(s):
Coverage:
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
Event(s):
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
Comment:
For organic-walled dinoflagellate cysts of core GeoB1105-4 see Höll et al. (1998) dataset: doi:10.1594/PANGAEA.55383
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 2 | Brigantedinium | Brigantedinium | # | Höll, Christine | Counting, palynology | |
| 3 | Trinovantedinium capitatum | T. capitatum | # | Höll, Christine | Counting, palynology | |
| 4 | Pentapharsodinium dalei | P. dalei | # | Höll, Christine | Counting, palynology | |
| 5 | Bitectatodinium tepikiense | B. tepikiense | # | Höll, Christine | Counting, palynology | |
| 6 | Tectatodinium pellitum | T. pellitum | # | Höll, Christine | Counting, palynology | |
| 7 | Pyxidinopsis reticulata | P. reticulata | # | Höll, Christine | Counting, palynology | |
| 8 | Polyspaeridium zoharyi | P. zoharyi | # | Höll, Christine | Counting, palynology | |
| 9 | Tuberculodinium vancampoae | T. vancampoae | # | Höll, Christine | Counting, palynology | |
| 10 | Dalella chathamensis | D. chathamensis | # | Höll, Christine | Counting, palynology | |
| 11 | Nematosphaeropsis labyrinthus | N. labyrinthus | # | Höll, Christine | Counting, palynology | |
| 12 | Impagidinium sp. | Impagidinium sp. | # | Höll, Christine | Counting, palynology | |
| 13 | Impagidinium aculeatum | I. aculeatum | # | Höll, Christine | Counting, palynology | |
| 14 | Impagidinium paradoxum | I. paradoxum | # | Höll, Christine | Counting, palynology | |
| 15 | Impagidinium patulum | I. patulum | # | Höll, Christine | Counting, palynology | |
| 16 | Impagidinium plicatum | I. plicatum | # | Höll, Christine | Counting, palynology | |
| 17 | Impagidinium sphaericum | I. sphaericum | # | Höll, Christine | Counting, palynology | |
| 18 | Impagidinium strialatum | I. strialatum | # | Höll, Christine | Counting, palynology | |
| 19 | Impagidinium velorum | I. velorum | # | Höll, Christine | Counting, palynology | |
| 20 | Lingulodinium machaerophorum | L. machaerophorum | # | Höll, Christine | Counting, palynology | |
| 21 | Protoceratium reticulatum long | P. reticulatum long | # | Höll, Christine | Counting, palynology | |
| 22 | Operculodinium israelianum | O. israelianum | # | Höll, Christine | Counting, palynology | |
| 23 | Operculodinium janduchenei | O. janduchenei | # | Höll, Christine | Counting, palynology | |
| 24 | Spiniferites | Spiniferites | # | Höll, Christine | Counting, palynology | |
| 25 | Spiniferites bentori | S. bentori | # | Höll, Christine | Counting, palynology | |
| 26 | Spiniferites delicatus | S. delicatus | # | Höll, Christine | Counting, palynology | |
| 27 | Spiniferites hyperacanthus | S. hyperacanthus | # | Höll, Christine | Counting, palynology | |
| 28 | Spiniferites membranaceus | S. membranaceus | # | Höll, Christine | Counting, palynology | |
| 29 | Spiniferites mirabilis | S. mirabilis | # | Höll, Christine | Counting, palynology | |
| 30 | Spiniferites pachydermus | S. pachydermus | # | Höll, Christine | Counting, palynology | |
| 31 | Spiniferites ramosus | S. ramosus | # | Höll, Christine | Counting, palynology | |
| 32 | Dinoflagellate cyst reworked | Dinofl cyst rew | # | Höll, Christine | Counting, palynology | |
| 33 | Sample mass | Samp m | g | Höll, Christine | see reference(s) | |
| 34 | Sample volume | Samp vol | l | Höll, Christine | see reference(s) | |
| 35 | Slide volume | slide vol | ml | Höll, Christine | see reference(s) | |
| 36 | Dinoflagellate cyst indeterminata | Dinofl indet | # | Höll, Christine | Counting, palynology |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
1225 data points