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Vink, Annemiek; Willems, Helmut (2000): Dinoflagellates of multicorer surface sediments. PANGAEA, https://doi.org/10.1594/PANGAEA.55921, Supplement to: Vink, Annemiek; Zonneveld, Karin A F; Willems, Helmut (2000): Distribution of calcareous dinoflagellate cysts in surface sediments of the western Equatorial Atlantic Ocean, and their potential use in palaeoceanography. Marine Micropaleontology, 38(2), 149-180, https://doi.org/10.1016/S0377-8398(99)00038-9

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Abstract:
Only very few studies focus on recent calcareous dinoflagellate cyst diversity, geographic distribution and ecology, so that information on the distribution patterns and environmental affinities of individual cyst species is extremely limited. This information is, however, essential if we want to use calcareous dinoflagellate cysts for palaeoenvironmental reconstruction. Surface sediment samples from the generally oligotrophic western equatorial Atlantic Ocean, offshore northeast Brazil, were therefore quantitatively analysed for their calcareous dinoflagellate cyst content, including the calcareous vegetative coccoid Thoracosphaera heimii. Seven calcareous dinoflagellate cyst species/morphotypes and T. heimii were encountered in high concentrations throughout the area. Substantial differences in the distribution patterns were observed. The highest concentrations of cysts are found in sediments of the more oligotrophic, oceanic regions, beyond the influence of Amazon River discharge waters. Dinoflagellates producing calcareous cysts thus appear to be capable of surviving low nutrient concentrations and produce large numbers of cysts in relatively stable and predictable environments affected by minimal seasonality. To test for the environmental affinities of individual species, distribution patterns in surface sediments were compared with temperature, salinity, density and stratification gradients within the upper water column (0-100 m) over different times of the year, using principal components analysis and redundancy analysis. T. heimii and four of the seven encountered cyst species (Sphaerodinella? albatrosiana, two morphotypes of Sphaerodinella? tuberosa and Scrippsiella regalis) relate to these parameters significantly and the variations in the cyst associations appear to be associated with the different surface water currents characterising the area. The results imply that calcareous dinoflagellate cyst distributions can potentially be used to distinguish between different open oceanic environments and they could, therefore, be useful in tracing water mass movements throughout the late Quaternary.
Related to:
Vink, Annemiek (2000): Reconstruction of recent and late Quaternary surface water masses of the western subtropical Atlantic Ocean based on calcareous and organic-walled dinoflagellate cysts. Berichte aus dem Fachbereich Geowissenschaften der Universität Bremen, 159, 160 pp, urn:nbn:de:gbv:46-ep000102797
Project(s):
South Atlantic in Late Quaternary: Reconstruction of Budget and Currents (SFB261)
Coverage:
Median Latitude: 5.803279 * Median Longitude: -42.873225 * South-bound Latitude: -7.466667 * West-bound Longitude: -59.388333 * North-bound Latitude: 18.195000 * East-bound Longitude: -23.428333
Date/Time Start: 1996-03-21T00:00:00 * Date/Time End: 1997-04-04T13:54:00
Minimum DEPTH, sediment/rock: m * Maximum DEPTH, sediment/rock: m
Event(s):
GeoB3906-9 * Latitude: -7.466667 * Longitude: -28.106667 * Date/Time: 1996-03-21T00:00:00 * Elevation: -4886.0 m * Recovery: 0.33 m * Location: Brazil Basin * Campaign: M34/4 * Basis: Meteor (1986) * Method/Device: MultiCorer (MUC) * Comment: Deep sea clay, manganese nodules
GeoB3908-11 * Latitude: -0.006667 * Longitude: -23.428333 * Date/Time: 1996-03-25T00:00:00 * Elevation: -3693.0 m * Recovery: 0.16 m * Location: Equatorial Atlantic * Campaign: M34/4 * Basis: Meteor (1986) * Method/Device: MultiCorer (MUC) * Comment: Clayey carbonate ooze, pale brown
GeoB3909-1 * Latitude: -3.548333 * Longitude: -36.270000 * Date/Time: 1996-03-29T00:00:00 * Elevation: -3174.0 m * Recovery: 0.33 m * Location: Northeast Brasilian Margin * Campaign: M34/4 * Basis: Meteor (1986) * Method/Device: MultiCorer (MUC) * Comment: Clayey carbonate ooze, forams, pteropods at surface
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Latitude of eventLatitude
2Longitude of eventLongitude
3Event labelEvent
4Elevation of eventElevationm
5DEPTH, sediment/rockDepthmGeocode
6Thoracosphaera heimiiT. heimii#Willems, HelmutCounting, dinoflagellate cystssize > 20 µm
7Thoracosphaera heimiiT. heimii#Willems, HelmutCounting, dinoflagellate cystssize < 20 µm
8Pernambugia tuberosaP. tuberosa#Willems, HelmutCounting, dinoflagellate cystssize > 20 µm
9Pernambugia tuberosaP. tuberosa#Willems, HelmutCounting, dinoflagellate cystssize < 20 µm
10Calciodinellum levantinumC. levantinum#Willems, HelmutCounting, dinoflagellate cystssize > 20 µm
11Calciodinellum levantinumC. levantinum#Willems, HelmutCounting, dinoflagellate cystssize > 20 µm, species 3
12Calciodinellum levantinumC. levantinum#Willems, HelmutCounting, dinoflagellate cystssize < 20 µm
13Calciodinellum levantinumC. levantinum#Willems, HelmutCounting, dinoflagellate cystssize < 20 µm, species 3
14Calciodinellum albatrosianumC. albatrosianum#Willems, HelmutCounting, dinoflagellate cystssize > 20 µm
15Calciodinellum albatrosianumC. albatrosianum#Willems, HelmutCounting, dinoflagellate cystssize < 20 µm
16Scrippsiella regalisS. regalis#Willems, HelmutCounting, dinoflagellate cystssize > 20 µm
17Scrippsiella regalisS. regalis#Willems, HelmutCounting, dinoflagellate cystssize < 20 µm
18Rhabdothorax spp.Rhabdothorax spp.#Willems, HelmutCounting, dinoflagellate cystssize > 20 µm
19Rhabdothorax spp.Rhabdothorax spp.#Willems, HelmutCounting, dinoflagellate cystssize < 20 µm
20Leonella graniferaL. granifera#Willems, HelmutCounting, dinoflagellate cystssize > 20 µm
21Leonella graniferaL. granifera#Willems, HelmutCounting, dinoflagellate cystssize < 20 µm
22Sample massSamp mgWillems, Helmutsize > 20 µm
23Sample massSamp mgWillems, Helmutsize < 20 µm
24Sample volumeSamp vollWillems, Helmutsize > 20 µm
25Sample volumeSamp vollWillems, Helmutsize < 20 µm
26Slide volumeslide volmlWillems, Helmutsee reference(s)size > 20 µm
27Slide volumeslide volmlWillems, Helmutsee reference(s)size < 20 µm
28Dinoflagellate cyst indeterminataDinofl indet#Willems, HelmutCounting, dinoflagellate cystssize > 20 µm
29Dinoflagellate cyst indeterminataDinofl indet#Willems, HelmutCounting, dinoflagellate cystssize < 20 µm
Size:
888 data points

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