García-Moreiras, Iria; Amorim, Ana; Zonneveld, Karin A F (2024): Dinoflagellate cyst counts from sediment samples along a land-sea transect off Cape Blanc NW Africa (Maria S. Merian cruise MSM79) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.969037
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Abstract:
Dinoflagellate cyst counts obtained in surface sediment samples collected along a shelf break-offshore transect in the upwelling region off Cape Blanc (NW Africa) are presented. Data was collected in November 2018 during the cruise Maria S. Merian MSM 79. New data on organic-walled dinoflagellate cysts in sediments were compared to cyst distributions in the water column and environmental parameters to investigate the cyst dispersal and accumulation patterns in deep-marine environments, detect possible cyst resuspension and other factors affecting cyst distribution in the water column and identify possible environmental signals in the sediment cyst assemblages.
Surface sediments (0-1 cm) were collected at 12 stations using a multi-core system. They were frozen at -20°C immediately after recovery. In the laboratory, sediment samples were subsampled (1 ml) and oven-dried (60 ºC for 24-48 h) to determine the dry bulk density. A known volume of each sample was processed using standard palynological techniques as described in Zonneveld et al. (2012). It included acidic digestion of carbonates (HCl 10%) and silicates (HF 40%). Cysts were concentrated by sonication and sieving through stainless steel meshes (fraction recovered <125 μm and >20 μm). Several cycles of sonication (~3 min each) and washing through the meshes with tap water were applied until the material was clean. Material was further concentrated by centrifugation (5 min at 3500 rpm) and transferred to Eppendorf tubes. The final volumes were adjusted to 0.5 to 1 ml, depending on the amount of organic content. Permanent slides were prepared by using the aliquot method to allow the determination of cyst concentrations. Slides were observed under a Zeiss Axioskop R5111 light microscope at x400 and x1000 magnifications, and all dinoflagellate cysts were identified and counted at the lowest possible taxonomic level.
Keyword(s):
Supplement to:
García-Moreiras, Iria; Amorim, Ana; Zonneveld, Karin A F (2024): Transport and preservation of calcareous and organic-walled dinoflagellate cysts off Cape Blanc (NW africa) in relation to nepheloid layers. Marine Environmental Research, 199, 106577, https://doi.org/10.1016/j.marenvres.2024.106577
References:
Zonneveld, Karin A F; Chen, Liang; Elshanawany, Rehab; Fischer, Helmut W; Hoins, Mirja; Ibrahim, Mohammed I; Pittauerova, Daniela; Versteegh, Gerard J M (2012): The use of dinoflagellate cysts to seperate human-induced from natural variability in the trophic state of the Po River discharge plume over the last two centuries. Marine Pollution Bulletin, 64(1), 114-132, https://doi.org/10.1016/j.marpolbul.2011.10.012
Funding:
Fundação para a Ciência e Tecnologia (FCT), grant/award no. LA/P/0069/2020: Aquatic Research Network (ARNET)
Fundação para a Ciência e Tecnologia (FCT), grant/award no. UIDB/04292/2020: Marine and Environmental Sciences Centre (MARE)
Fundação para a Ciência e Tecnologia (FCT), grant/award no. UIDP/04292/2020: Marine and Environmental Sciences Centre (MARE)
German Research Foundation (DFG), grant/award no. Mer/Met: 17-87: Marine carbon production, export, relocation and degradation under varying ocean redox conditions off NW Africa (MACPEI)
Xunta de Galicia, grant/award no. ED481B-2019-074: postdoctoral fellowship awarded to Iria García-Moreiras
Coverage:
Median Latitude: 20.884734 * Median Longitude: -18.985222 * South-bound Latitude: 20.680683 * West-bound Longitude: -20.834983 * North-bound Latitude: 21.279450 * East-bound Longitude: -17.940667
Date/Time Start: 2018-11-13T12:33:00 * Date/Time End: 2018-11-24T22:49:00
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
MSM79_7-2 (GeoB23307-2) * Latitude: 21.279450 * Longitude: -20.834983 * Date/Time: 2018-11-13T12:33:00 * Elevation: -4183.0 m * Recovery: 0.30 m * Campaign: MSM79 * Basis: Maria S. Merian * Method/Device: MultiCorer (MUC)
MSM79_8-2 (GeoB23308-2) * Latitude: 21.123917 * Longitude: -20.249050 * Date/Time: 2018-11-13T21:13:00 * Elevation: -3961.0 m * Recovery: 0.21 m * Campaign: MSM79 * Basis: Maria S. Merian * Method/Device: MultiCorer (MUC)
MSM79_20-9 (GeoB23320-9) * Latitude: 20.894017 * Longitude: -19.051417 * Date/Time: 2018-11-17T23:38:00 * Elevation: -3215.0 m * Recovery: 0.30 m * Campaign: MSM79 * Basis: Maria S. Merian * Method/Device: MultiCorer (MUC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | García-Moreiras, Iria | |||
| 2 | Latitude of event | Latitude | García-Moreiras, Iria | |||
| 3 | Longitude of event | Longitude | García-Moreiras, Iria | |||
| 4 | Elevation of event | Elevation | m | García-Moreiras, Iria | ||
| 5 | Method/Device of event | Method/Device | García-Moreiras, Iria | |||
| 6 | Date/Time of event | Date/Time | García-Moreiras, Iria | |||
| 7 | Sample code/label | Sample label | García-Moreiras, Iria | |||
| 8 | Station label | Station | García-Moreiras, Iria | Transect station | ||
| 9 | Dilution factor | Dilution | García-Moreiras, Iria | |||
| 10 | Sample, dry mass | Samp dm | g | García-Moreiras, Iria | processed | |
| 11 | DEPTH, sediment/rock | Depth sed | m | García-Moreiras, Iria | Geocode | |
| 12 | Ataxodinium choane | A. choane | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 13 | Bitectatodinium spongium | B. spongium | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 14 | Diplopelta symmetrica | D. symmetrica | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 15 | Diplopelta symmetrica | D. symmetrica | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | full |
| 16 | Dubridinium sp. | Dubridinium sp. | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 17 | Echinidinium aculeatum | E. aculeatum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 18 | Echinidinium aculeatum | E. aculeatum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | full |
| 19 | Echinidinium brevispinosum | E. brevispinosum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 20 | Echinidinium brevispinosum | E. brevispinosum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | full |
| 21 | Echinidinium granulatum | E. granulatum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | E. granulatum/delicatum |
| 22 | Echinidinium transparantum | E. transparantum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 23 | Echinidinium zonneveldiae | E. zonneveldiae | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 24 | Echinidinium zonneveldiae | E. zonneveldiae | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | full |
| 25 | Gymnodinium catenatum | G. catenatum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 26 | Gymnodinium microreticulatum | G. microreticulatum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 27 | Gymnodinium microreticulatum | G. microreticulatum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | full |
| 28 | Gymnodinium sp. | Gymnodinium sp. | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 29 | Impagidinium sp. | Impagidinium sp. | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 30 | Impagidinium aculeatum | I. aculeatum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 31 | Impagidinium aculeatum | I. aculeatum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | full |
| 32 | Impagidinium paradoxum | I. paradoxum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 33 | Impagidinium patulum | I. patulum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 34 | Impagidinium plicatum | I. plicatum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 35 | Impagidinium strialatum | I. strialatum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 36 | Lejeunecysta oliva | L. oliva | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 37 | Lejeunecysta paratenella | L. paratenella | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 38 | Lejeunecysta sabrina | L. sabrina | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 39 | Lingulodinium machaerophorum | L. machaerophorum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 40 | Operculodinium centrocarpum | O. centrocarpum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 41 | Operculodinium israelianum | O. israelianum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | cf. Operculodinium israelianum |
| 42 | Pentapharsodinium dalei | P. dalei | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 43 | Pentapharsodinium dalei | P. dalei | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | full |
| 44 | Polysphaeridium zoharyi | P. zoharyi | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | cf. Polysphaeridium zoharyi |
| 45 | Polykrikos kofoidii | P. kofoidii | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 46 | Polykrikos schwartzii | P. schwartzii | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 47 | Protoperidinium americanum | P. americanum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 48 | Archaeperidinium constrictum | A. constrictum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 49 | Archaeperidinium minutum | A. minutum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 50 | Archaeperidinium minutum | A. minutum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | full |
| 51 | Protoperidinium monospinum | P. monospinum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 52 | Protoperidinium monospinum | P. monospinum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | full |
| 53 | Archaeperidinium saanichi | A. saanichi | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 54 | Quinquecuspis concreta | Q. concreta | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 55 | Dinoflagellate cyst indeterminata, round brown | Dinofl indet RBC | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 56 | Dinoflagellate cyst indeterminata, round brown | Dinofl indet RBC | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | full |
| 57 | Selenopemphix nephroides | S. nephroides | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 58 | Selenopemphix quanta | S. quanta | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 59 | Selenopemphix undulata | S. undulata | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 60 | Steladinium-type with cingular spines | Steladinium-type w cingular spines | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 61 | Steladinium-type without cingular spines | Steladinium-type w/o cingular spines | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 62 | Spiniferites membranaceous | S. membranaceous | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 63 | Spiniferites mirabilis | S. mirabilis | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | S. mirabilis/hyperacanthus |
| 64 | Spiniferites sp. | Spiniferites sp. | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 65 | Trinovantedinium applanatum | T. applanatum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 66 | Trinovantedinium pallidifulvum | T. pallidifulvum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 67 | Peridinoid type | Perid-T | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | Unidentifiable brown peridinoids |
| 68 | Dinoflagellate cyst indeterminata, spinny brown | Dinofl indet SBC | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 69 | Votadinium calvum | V. calvum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 70 | Xandarodinium xanthum | X. xanthum | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications | |
| 71 | Dinoflagellate cyst, organic, total | Dinofl cyst org tot | # | García-Moreiras, Iria | Light microscope, Zeiss Axioskop R5111, x400 and x1000 magnifications |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
768 data points