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  • Benguela; Celtic_Sea; Center for Marine Environmental Sciences; GeoB; Geosciences, University of Bremen; MARUM; MUC; MultiCorer; North_Sea; North Sea; NW_Africa  (1)
  • Alexandrium-type; B1; B2; B3; Benthic nepheloid layer; Bottom grab (Smith-McIntyre); Brigantedinium sp.; cf. Thoracosphaera sp.; Coastal dynamics; Counting, dinoflagellate cysts; CTD/Rosette; CTD-RO; Date/Time of event; Date/Time of event 2; DEPTH, sediment/rock; DEPTH, water; Dinoflagellate cyst, empty; Dinoflagellate cyst, full; Dinoflagellate cyst indeterminata, round brown; Dinoflagellate cyst indeterminata, spinny brown; Dinoflagellate cysts; Diplopsalis-type; Dubridinium sp.; Echinidinium granulatum; Echinidinium transparantum; Elevation of event; Event label; F1-02 LOW; F1-02 UP; F1-03; F1-04 LOW; F1-04 UP; F2-0; F2-1; F2-10; F2-11; F2-12; F2-2; F2-3; F2-4; F2-5; F2-6; F2-7; F2-8; F2-9; Gymnodinium catenatum; Gymnodinium microreticulatum; Gymnodinium nolleri; HABWAVE_B1; HABWAVE_B2; HABWAVE_B3; HABWAVE_F1-02_LOW; HABWAVE_F1-02_UP; HABWAVE_F1-03; HABWAVE_F1-04_LOW; HABWAVE_F1-04_UP; HABWAVE_F2-0; HABWAVE_F2-1; HABWAVE_F2-10; HABWAVE_F2-11; HABWAVE_F2-12; HABWAVE_F2-2; HABWAVE_F2-3; HABWAVE_F2-4; HABWAVE_F2-5; HABWAVE_F2-6; HABWAVE_F2-7; HABWAVE_F2-8; HABWAVE_F2-9; HABWAVE_S1; HABWAVE_S2; HABWAVE_ST; HABWAVE_T1-1; HABWAVE_T1-10; HABWAVE_T1-2; HABWAVE_T1-3; HABWAVE_T1-7; HABWAVE_T1-9; HABWAVE_T2-1; HABWAVE_T2-2; HABWAVE_T2-3; HABWAVE_T2-5; HABWAVE_T2-7; HABWAVE_T2-9; Impagidinium aculeatum; Impagidinium sp.; Latitude of event; Lejeunecysta oliva; Lejeunecysta sp.; Lingulodinium polyedra; Longitude of event; NW portuguese margin; off Figueira da Foz, NW Portugal; Peridinoid spp.; Polykrikos kofoidii; Protoceratium reticulatum; Protoperidinium americanum; Protoperidinium conicum; Protoperidinium divaricatum; Protoperidinium shanghaiense; Protoperidinium stellatum; Protoperidinium subinerme; S1; S2; Sample code/label; Sample material; Sample method; Scrippsiella cf. trochoidea; SMG; Spiniferites bentori; Spiniferites cf. ramosus; Spiniferites delicatus; Spiniferites membranaceus; Spiniferites mirabilis; Spiniferites sp.; ST; surface sediments; T1-1; T1-10; T1-2; T1-3; T1-7; T1-9; T2-1; T2-2; T2-3; T2-5; T2-7; T2-9; Trap, sediment; TRAPS; Votadinium calvum; Votadinium rhomboideum; Votadinium spp.
  • Benthic nepheloid layer; Coastal dynamics; Dinoflagellate cysts; NW portuguese margin; surface sediments
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  • 1
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    Unknown
    Absolute abundances of dinoflagellate cysts in surface sediment samples from four sites: Lycopodium marker-grain method (2009)
    PANGAEA
    In:  Supplement to: Mertens, Kenneth Neil; Verhoeven, Koen; Verleye, Thomas; Louwye, Stephen; Amorim, Ana; Ribeiro, Sofia; Deaf, Amr S; Harding, Ian C; De Schepper, Stijn; González, Catalina; Kodrans-Nsiah, Monika; de Vernal, Anne; Henry, Maryse; Radi, Taoufik; Dybkjaer, Karen; Poulsen, Niels E; Feist-Burkhardt, Susanne; Chitolie, Jonah; Heilmann-Clausen, Claus; Londeix, Laurent; Turon, Jean-Louis; Marret, Fabienne; Matthiessen, Jens; McCarthy, Francine M G; Prasad, Vandana; Pospelova, Vera; Hughes, Jane E Kyffin; Riding, James B; Rochon, André; Sangiorgi, Francesca; Welters, Natasja; Sinclair, Natalie; Thun, Christian; Soliman, Ali; Van Nieuwenhove, Nicolas; Vink, Annemiek; Young, Martin (2009): Determining the absolute abundance of dinoflagellate cysts in recent marine sediments: The Lycopodium marker-grain method put to the test. Review of Palaeobotany and Palynology, Review of Palaeobotany and Palynology, 157(3-4), 238-252, https://doi.org/10.1016/j.revpalbo.2009.05.004
    Details
    Publication Date: 2024-06-17
    Description: Absolute abundances (concentrations) of dinoflagellate cysts are often determined through the addition of Lycopodium clavatum marker-grains as a spike to a sample before palynological processing. An inter-laboratory calibration exercise was set up in order to test the comparability of results obtained in different laboratories, each using its own preparation method. Each of the 23 laboratories received the same amount of homogenized splits of four Quaternary sediment samples. The samples originate from different localities and consisted of a variety of lithologies. Dinoflagellate cysts were extracted and counted, and relative and absolute abundances were calculated. The relative abundances proved to be fairly reproducible, notwithstanding a need for taxonomic calibration. By contrast, excessive loss of Lycopodium spores during sample preparation resulted in non-reproducibility of absolute abundances. Use of oxidation, KOH, warm acids, acetolysis, mesh sizes larger than 15 µm and long ultrasonication (〉 1 min) must be avoided to determine reproducible absolute abundances. The results of this work therefore indicate that the dinoflagellate cyst worker should make a choice between using the proposed standard method which circumvents critical steps, adding Lycopodium tablets at the end of the preparation and using an alternative method.
    Keywords: Benguela; Celtic_Sea; Center for Marine Environmental Sciences; GeoB; Geosciences, University of Bremen; MARUM; MUC; MultiCorer; North_Sea; North Sea; NW_Africa
    Type: Dataset
    Format: application/zip, 4 datasets
    Location Call Number Limitation Availability
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