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Wendler, Ines; Zonneveld, Karin A F; Willems, Helmut (2002): Abundances of dinoflagellate cysts in sediment trap MST-9 (Appendix 1). PANGAEA, https://doi.org/10.1594/PANGAEA.714599, Supplement to: Wendler, I et al. (2002): Production of calcareous dinoflagellate cysts in response to monsoon forcing off Somalia: a sediment trap study. Marine Micropaleontology, 46(1-2), 1-11, https://doi.org/10.1016/S0377-8398(02)00049-X

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Abstract:
To study the ecology of calcareous dinoflagellates we examined the impact of the SW and NE monsoons on cyst formation using sediment trap material, collected at 1032 m water depth, off Somalia from June 1992 to February 1993. The results do not confirm the relationship between cyst production and lower nutrient concentrations, as highest cyst fluxes were recorded during late SW monsoon under the relatively nutrient-rich and less agitated conditions of mature upwelled water. Lowest cyst fluxes were found under strongly stratified, nutrient-depleted surface waters during the inter-monsoon. Although all of the studied species seem to prefer a stratified water column, an elevated concentration of nutrients appears to be necessary to maintain high cyst production. Comparison of the mean cyst flux to the sediment trap with that into the underlying surface sediments reveals a loss of 81-96%, which can be attributed to calcite dissolution. The relatively small spheres of Thoracosphaera heimii are affected more than the cysts of the other species.
Related to:
Wendler, Ines (2002): Production and preservation of calcareous dionoflagellate cysts in the modern Arabian Sea. Berichte aus dem Fachbereich Geowissenschaften der Universität Bremen, 190, 117 pp, urn:nbn:de:gbv:46-diss000002749
Project(s):
Netherlands Indian Ocean Programme (NIOP)
Coverage:
Latitude: 10.716660 * Longitude: 53.566660
Date/Time Start: 1992-06-07T00:00:00 * Date/Time End: 1993-02-14T00:00:00
Minimum DEPTH, water: 1032 m * Maximum DEPTH, water: 1032 m
Event(s):
MST-9 (915) * Latitude: 10.716660 * Longitude: 53.566660 * Date/Time Start: 1992-06-07T00:00:00 * Date/Time End: 1993-02-14T00:00:00 * Elevation: -4059.0 m * Location: Somalia Basin * Campaign: NIOP-C2 * Basis: Tyro * Device: Trap (TRAP) * Comment: one mooring contains two traps, MST-9E (water depth 1030 m) and MST-9G (water depth 3045m)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1DATE/TIMEDate/TimeGeocode
2DEPTH, waterDepth watermGeocode
3NumberNoWendler, Ines
4Total mass flux per dayMass fluxmg/m2/dayWendler, Inesmass flux
5MassMassmgWendler, Inessediment
6VolumeVolmlWendler, Ineswater
7SplitSplit#Wendler, Inesµl
8Thoracosphaera heimiiT. heimii#Wendler, Ines
9Leonella graniferaL. granifera#Wendler, Ines
10Calciodinellum albatrosianumC. albatrosianum#Wendler, Ines
11Calciodinellum levantinumC. levantinum#Wendler, Ines
12Dinoflagellate cyst, spinyDinofl cyst spiny#Wendler, Inesspiny
13Calciodinellum operosumC. operosum#Wendler, Ines
14Dinoflagellate cyst indeterminataDinofl indet#Wendler, Ines
Size:
276 data points

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