(Table 2) Dinoflagellate cysts in surface sediment samples of METEOR cruises M20/2, M23/1, M34/2 and M34/2


The organic walled cyst content of 41 surface sediment samples from the south-eastern South Atlantic Ocean have been studied to create a dataset that can be used for palaeoceanographic reconstructions. In order to obtain insight into which environmental factors influence the distribution of individual cyst species, the cyst associations have been compared with oceanographic characteristics of the overlying water masses, i.e. temperature, salinity, density and stratification gradients. The associations and relationships have been established by visual examination of the dataset and the multivariate ordination techniques, Detrended Correspondence Analysis and Canonical Correspondence Analysis. Special attention has been given to the factors of transport and preservation of the cysts. Five associations have been recognised as being characteristic of (1) areas influenced by coastal upwelling and/or river outflow, (2) open ocean, (3) Agulhas Current and southern Benguela Current, (4) Benguela Current and (5) Walvis Bay, shelf break area. The factors dominant in influencing either directly or indirectly the cyst distributions appear to be the stratification in the upper 50 m of the water column, nutrient concentration and seasonality. Variations in sea surface temperatures and salinities have only minor effect on cyst distribution.

Supplement to: Zonneveld, Karin A F; Hoek, Ramses P; Brinkhuis, Henk; Willems, Helmut (2001): Geographical distributions of organic-walled dinoflagellate cysts in surficial sediments of the Benguela upwelling region and their relationship to upper ocean conditions. Progress in Oceanography, 48(1), 25-72

DOI https://doi.org/10.1594/PANGAEA.85166
Related Identifier https://doi.org/10.1016/S0079-6611(00)00047-1
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.85166
Creator Zonneveld, Karin A F ; Hoek, Ramses P; Brinkhuis, Henk ; Willems, Helmut
Publisher PANGAEA
Publication Year 2001
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Language English
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 2460 data points
Discipline Geosciences; Natural Sciences
Spatial Coverage (1.002W, -35.583S, 17.862E, -17.453N); off Kunene; Walvis Ridge; Namibia continental slope; Namibia Continental Margin; South African margin; Cape Basin; Southern Cape Basin; Northern Cape Basin
Temporal Coverage Begin 1992-01-06T00:00:00Z
Temporal Coverage End 1996-02-15T00:00:00Z