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  • 2015-2019  (776,766)
  • 2005-2009  (21)
  • 1995-1999  (15)
  • 2017  (776,766)
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Year
  • 1
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    Organic-walled dinoflagellate cyst analysis of sediment core GeoB8331-4 and from surface sediment samples off western South Africa (2017)
    PANGAEA
    In:  Supplement to: Zhao, Xueqin; Dupont, Lydie M; Schefuß, Enno; Bouimetarhan, Ilham; Wefer, Gerold (2017): Palynological evidence for Holocene climatic and oceanographic changes off western South Africa. Quaternary Science Reviews, 165, 88-101, https://doi.org/10.1016/j.quascirev.2017.04.022
    Details
    Publication Date: 2024-06-12
    Description: Atmospheric and oceanographic interactions between the Atlantic and Indian Oceans influence upwelling in the southern Benguela upwelling system. In order to obtain a better knowledge of paleoceanographic and paleoenvironmental changes in the southern Benguela region during the Holocene, 12 marine surface sediment samples and one gravity core GeoB8331-4 from the Namaqualand mudbelt off the west coast of South Africa have been studied for organic-walled dinoflagellate cysts in high temporal resolution. The results are compared with pollen and geochemical records from the same samples. Our study emphasizes significantly distinct histories in upwelling intensity as well as the influence of fluvial input during the Holocene. Three main phases were identified for the Holocene. High percentages of cysts produced by autotrophic taxa like Operculodinium centrocarpum and Spiniferites spp. indicate warmer and stratified conditions during the early Holocene (9900-8400 cal. yr BP), suggesting reduced upwelling likely due to a northward shift of the southern westerlies. In contrast, the middle Holocene (8400-3100 cal. yr BP) is characterized by a strong increase in heterotrophic taxa in particular Lejeunecysta paratenella and Echinidinium spp. at the expense of autotrophic taxa. This indicates cool and nutrient-rich waters with active upwelling probably caused by a southward shift of the southern westerlies. During the late Holocene (3100 cal. yr BP to modern), Brigantedinium spp. and other abundant taxa interpreted to indicate fluvial nutrient input such as cyst of Protoperidinium americanum and Lejeunecysta oliva imply strong river discharge with high nutrient supply between 3100 and 640 cal. yr BP.
    Keywords: Center for Marine Environmental Sciences; MARUM; RAiN; Regional Archives for Integrated iNvestigations
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 2
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    AMS 14C measurements of sediment core GeoB20628-1 (2017)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Keywords: Age, 14C; Age, comment; Age, dated; Age, dated material; Age, uncertainty; Analytical method; Calendar age; Calendar age, maximum/old; Calendar age, minimum/young; Center for Marine Environmental Sciences; DEPTH, sediment/rock; GeoB20628-1; Laboratory code/label; M123; M123_187-1; MARUM; Meteor (1986); RAiN; Regional Archives for Integrated iNvestigations; VC; Vibro corer
    Type: Dataset
    Format: text/tab-separated-values, 27 data points
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  • 3
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    Meiofauna counts during POLARSTERN cruise ANT-XXIX/3 in January-March 2013: Weddell Sea, Bransfield Strait, Drake Passage (2017)
    PANGAEA
    In:  Supplement to: Veit-Köhler, Gritta; Durst, Stephan; Schuckenbrock, Jan; Hauquier, Freija; Durán Suja, Laura; Dorschel, Boris; Vanreusel, Ann; Martínez Arbizu, Pedro (2018): Oceanographic and topographic conditions structure benthic meiofauna communities in the Weddell Sea, Bransfield Strait and Drake Passage (Antarctic). Progress in Oceanography, 162, 240-256, https://doi.org/10.1016/j.pocean.2018.03.005
    Details
    Publication Date: 2024-06-12
    Description: In Weddell Sea, Bransfield Strait, and Drake Passage samples for meiofauna communities and sediment analyses were collected with a multicorer. Meiofauna communities included individuals from 19 higher taxa (sieve size 32 µm). The highest meiofauna abundances were found at slopes in the Weddell Sea. For Bransfield Strait and Drake Passage a sampling scheme of slopes and adjacent troughs was applied. This study was supported by the Alfred-Wegener-Institute, Helmholtz-Centre for Polar and Marine Research (Grant AWI_PS81_03).
    Keywords: Acari; Amphipoda; Annelida; ANT-XXIX/3; Area/locality; Bivalvia; Cladocera; Coelenterata; Copepoda; Copepoda, nauplii; Cumacea; Date/Time of event; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DP-243; DP-250; Elevation of event; Event label; Gastrotricha; Isopoda; Kinorhyncha; Latitude of event; Longitude of event; Loricifera; MUC; MultiCorer; Nematoda; Ophiurida; Ostracoda; Polarstern; Priapulida; PS81; PS81/118-10; PS81/118-9; PS81/120-5; PS81/120-6; PS81/120-7; PS81/162-3; PS81/162-4; PS81/162-5; PS81/163-4; PS81/163-5; PS81/163-6; PS81/193-4; PS81/193-5; PS81/193-6; PS81/196-5; PS81/196-6; PS81/202-3; PS81/202-4; PS81/202-5; PS81/217-2; PS81/217-3; PS81/218-4; PS81/218-5; PS81/218-6; PS81/225-3; PS81/225-4; PS81/225-5; PS81/235-4; PS81/235-5; PS81/235-6; PS81/238-4; PS81/238-5; PS81/238-6; PS81/243-3; PS81/243-4; PS81/243-5; PS81/244-5; PS81/244-6; PS81/244-7; PS81/247-4; PS81/247-6; PS81/247-7; PS81/250-3; PS81/250-4; PS81/250-5; Replicates; Rotifera; Scotia Sea; Tanaidacea; Tardigrada; W-120; W-163; Weddell Sea
    Type: Dataset
    Format: text/tab-separated-values, 5592 data points
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  • 4
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    Lipid biomarker of sediment core GeoB8331-4 (2017)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Keywords: AGE; Carbon Preference Index, n-Alkanes (C27-C33); Center for Marine Environmental Sciences; DEPTH, sediment/rock; GeoB8331-4; Gravity corer (Kiel type); M57/1; MARUM; Meteor (1986); n-Alkane, average chain length; n-Alkane C29, per unit sediment mass; n-Alkane C29, δ13C; n-Alkane C29, δ13C, standard deviation; n-Alkane C29, δD; n-Alkane C29, δD, standard deviation; n-Alkane C31, per unit sediment mass; n-Alkane C31, δ13C; n-Alkane C31, δ13C, standard deviation; n-Alkane C31, δD; n-Alkane C31, δD, standard deviation; RAiN; Regional Archives for Integrated iNvestigations; SL; Standard deviation; Sum n-alkanes C25-C33
    Type: Dataset
    Format: text/tab-separated-values, 1010 data points
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  • 5
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    (Table 1) AMS radiocarbon analyses of bulk TOC and carbonate material from sediment core GeoB18308-1 (2017)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Keywords: Age, 14C AMS; Age, comment; Age, dated; Age, dated material; Age, dated standard deviation; Analytical method; Calendar age; Calendar age, maximum/old; Calendar age, minimum/young; Center for Marine Environmental Sciences; DEPTH, sediment/rock; GeoB18308-1; Laboratory code/label; M102; MARUM; Meteor (1986); RAiN; Regional Archives for Integrated iNvestigations; VC; Vibro corer
    Type: Dataset
    Format: text/tab-separated-values, 109 data points
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  • 6
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    Lipid biomarkers of samples from the Orange River, South Africa (2017)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Keywords: Center for Marine Environmental Sciences; Event label; Latitude of event; Longitude of event; MARUM; n-Alkane C29, δ13C; n-Alkane C29, δ13C, standard deviation; n-Alkane C29, δD; n-Alkane C29, δD, standard deviation; n-Alkane C31, δ13C; n-Alkane C31, δ13C, standard deviation; n-Alkane C31, δD; n-Alkane C31, δD, standard deviation; ORF_23; ORF_24S; ORF_25; ORF_26; ORF_27S; ORF_29B; ORF_29S; ORF_29T; ORF_31S; ORF_33; ORF_34S; ORF_35; ORF_36S; ORF_37; ORF_40; RAiN; Regional Archives for Integrated iNvestigations
    Type: Dataset
    Format: text/tab-separated-values, 110 data points
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  • 7
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    Organic-walled dinoflagellate cyst analysis of sediment core GeoB8331-4 (2017)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Keywords: AGE; Ataxiodinium spp.; Bitectatodinium spongium; Bitectatodinium tepikiense; Brigantedinium spp.; Center for Marine Environmental Sciences; Concentricystes; Cosmarium spp.; Counting, palynology; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Dinoflagellate cyst; Dinoflagellate cyst indeterminata; Dubridinium caperatum; Dubridinium spp.; Echinidinium aculeatum; Echinidinium delicatum; Echinidinium granulatum; Echinidinium spp.; Echinidinium transparantum; GeoB8331-4; Gravity corer (Kiel type); Impagidinium aculeatum; Impagidinium paradoxum; Impagidinium patulum; Impagidinium spp.; Impagidinium strialatum; Islandinium spp.; Lejeunecysta oliva; Lejeunecysta paratenella; Lejeunecysta sabrina; Lingulodinium machaerophorum; Lycopodium; Lycopodium (added); M57/1; MARUM; Meteor (1986); Nematosphaeropsis labyrinthus; Nematosphaeropsis rigida; Nematosphaeropsis spp.; Operculodinium centrocarpum; Operculodinium israelianum; Operculodinium janduchenei; Operculodinium spp.; Pediastrum; Peridinium ponticum; Polykrikos kofoidii; Polykrikos schwartzii; Polysphaeridium zoharyi; Protoperidinium americanum; Quinquecuspis concreta; RAiN; Regional Archives for Integrated iNvestigations; Selenopemphix nephroides; Selenopemphix quanta; SL; Spiniferites; Spiniferites bentori; Spiniferites bulloideus; Spiniferites cruciformis; Spiniferites elongatus; Spiniferites membranaceus; Spiniferites mirabilis; Spiniferites pachydermus; Spiniferites ramosus; Spiniferites spp.; Stelladinium robustum; Stelladinium spp.; Trinovantedinium applanatum; Volume; Votadinium calvum; Votadinium spinosum; Xandarodinium xanthum
    Type: Dataset
    Format: text/tab-separated-values, 3100 data points
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  • 8
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    (Table 4) Mineralogical composition of heavy minerals in silt and sand fraction (15-500 µm) of marine sediments from sediment core GeoB18308-1 and Gouritz River catchment (2017)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Keywords: Amphibole; Apatite; Center for Marine Environmental Sciences; Chloritoid; Clinopyroxene; DEPTH, sediment/rock; ECT-2-1; Epidote; Event label; Garnet; GeoB18308-1; Gourits River; Heavy minerals; Heavy minerals, opaque; Location; M102; MARUM; Meteor (1986); Orthopyroxene; RAiN; Regional Archives for Integrated iNvestigations; Rutile; Sillimanite; Titanite; Total; Tourmaline; VC; Vibro corer; Zircon
    Type: Dataset
    Format: text/tab-separated-values, 66 data points
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  • 9
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    (Table 3) Geochemical downcore analyses of sediment core GeoB18308-1 (2017)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Keywords: Branched and isoprenoid tetraether index; Calculated; Center for Marine Environmental Sciences; DEPTH, sediment/rock; GeoB18308-1; M102; MARUM; Meteor (1986); n-Alkane, C31/(C29+C31) ratio; n-Alkane C31, δ13C; n-Alkane C31, δ13C, standard deviation; n-Alkane C31, δD; n-Alkane C31, δD, standard deviation; RAiN; Regional Archives for Integrated iNvestigations; Sea surface temperature; SST, from TEX86H (Kim et al., 2010); Tetraether index of 86 carbon atoms, high-temperature region; VC; Vibro corer
    Type: Dataset
    Format: text/tab-separated-values, 211 data points
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  • 10
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    Pollen profile of sediment core L14-02 (2017)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Keywords: Alnus fruticosa-type; Apiaceae; Artemisia; Asteraceae; AWI_Envi; AWI_PerDyn; AWI_Perma; AWI Arctic Land Expedition; Betula sect. Nanae; Bolshoy-Lyakhovsky_Island_2014; Bolshoy Lyakhovsky Island, East Siberia, Russia; Botrychium; Botryoccocus; Brassicaceae; Bryophyta; Caryophyllaceae; cf. Callitriche; cf. Caltha; cf. Comarum; cf. Dryas; cf. Dryopteris; cf. Juglans; cf. Myriophyllum; cf. Novosieversia; cf. Parnassia; cf. Pedicularis; cf. Rubus chamaemorus; cf. Saxifraga hirculus; Chenopodiaceae; Chrysosplenium; Cichoriaceae; Counting, palynology; Crassulaceae; Cyperaceae; DEPTH, sediment/rock; Descurainia; Encalypta; Equisetum; Ericales; Fabaceae; Gelasinospora; Gentianaceae; Glomus; Huperzia selago; Indeterminata; Juncaceae; L14-02; Lamiaceae; LAND; Larix; Liliaceae; Lycopodium annotinum-type; Lycopodium clavatum-type; Lycopodium pungens; Lycopodium spike; Onagraceae; Ophioglossum; Orchidaceae; Osmunda; Papaveraceae; Pediastrum; Permafrost Research; Permafrost Research (Periglacial Dynamics) @ AWI; Picea; Pinaceae undifferentiated; Pinus sp.; Pinus subgen. Diploxylon-type; Pinus subgen. Haploxylon-type; Poaceae; Polar Terrestrial Environmental Systems @ AWI; Polemonium; Pollen, prequaternary; Pollen, total; Polygonum viviparum-type; Polypodiaceae; Potamogeton; Potentilla sp.; Pteridaceae; Pyrolaceae; Ranunculaceae; Riccia; Rosaceae; Rubiaceae; RU-Land_2014_BolshoyLyakhovsky; Rumex/Oxyria; Salix; Sample volume; Sampling/measurement on land; Sanguisorba; Saussurea-type; Saxifraga; Scrophulariaceae; Selaginella rupestris; Selaginella sanguinolenta; Selaginella selaginoides; Sordaria; Sphagnum; Spike; Spores, prequaternary; Sporormiella; Thalictrum; Tsuga; Typha/Sparganium; Ustulina; Valeriana; Volume of spike added; Zygnema-type
    Type: Dataset
    Format: text/tab-separated-values, 1952 data points
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