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  • PANGAEA  (16)
  • 2010-2014  (16)
  • 1995-1999
  • 2013  (16)
Document type
Keywords
Publisher
Years
  • 2010-2014  (16)
  • 1995-1999
Year
  • 1
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    Compound specific stable isotopes, BIT, pollen and spores of Miocene to Pliocene sediments of ODP Hole 175-1085A (2013)
    PANGAEA
    In:  Supplement to: Dupont, Lydie M; Rommerskirchen, Florian; Mollenhauer, Gesine; Schefuß, Enno (2013): Miocene to Pliocene changes in South African hydrology and vegetation in relation to the expansion of C4 plants. Earth and Planetary Science Letters, 375, 408-417, https://doi.org/10.1016/j.epsl.2013.06.005
    Details
    Publication Date: 2023-03-03
    Description: Pollen and stable carbon (d13C) and hydrogen (dD) isotope ratios of terrestrial plant wax from the South Atlantic sediment core, ODP Site 1085, is used to reconstruct Miocene to Pliocene changes of vegetation and rainfall regime of western southern Africa. Our results reveal changes in the relative amount of precipitation and indicate a shift of the main moisture source from the Atlantic to the Indian Ocean during the onset of a major aridification 8 Ma ago. We emphasise the importance of declining precipitation during the expansion of C4 and CAM (mainly succulent) vegetation in South Africa. We suggest that the C4 plant expansion resulted from an increased equator-pole temperature gradient caused by the initiation of strong Atlantic Meridional Overturning Circulation following the shoaling of the Central American Seaway during the Late Miocene.
    Keywords: Center for Marine Environmental Sciences; MARUM
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Tropical climate and vegetation simulations during the Heinrich event 1 using an Earth System Model of Intermediate Complexity (EMIC) - the University of Victoria Earth System-Climate Model (UVic ESCM) (2013)
    PANGAEA
    In:  Supplement to: Handiani, Dian Noor; Paul, André; Dupont, Lydie M (2012): Tropical climate and vegetation changes during Heinrich Event 1: a model-data comparison. Climate of the Past, 8(1), 37-57, https://doi.org/10.5194/cp-8-37-2012
    Details
    Publication Date: 2023-01-13
    Description: Abrupt climate changes from 18 to 15 thousand years before present (kyr BP) associated with Heinrich Event 1 (HE1) had a strong impact on vegetation patterns not only at high latitudes of the Northern Hemisphere, but also in the tropical regions around the Atlantic Ocean. To gain a better understanding of the linkage between high and low latitudes, we used the University of Victoria (UVic) Earth System-Climate Model (ESCM) with dynamical vegetation and land surface components to simulate four scenarios of climate-vegetation interaction: the pre-industrial era, the Last Glacial Maximum (LGM), and a Heinrich-like event with two different climate backgrounds (interglacial and glacial). We calculated mega-biomes from the plant-functional types (PFTs) generated by the model to allow for a direct comparison between model results and palynological vegetation reconstructions. Our calculated mega-biomes for the pre-industrial period and the LGM corresponded well with biome reconstructions of the modern and LGM time slices, respectively, except that our pre-industrial simulation predicted the dominance of grassland in southern Europe and our LGM simulation resulted in more forest cover in tropical and sub-tropical South America. The HE1-like simulation with a glacial climate background produced sea-surface temperature patterns and enhanced inter-hemispheric thermal gradients in accordance with the "bipolar seesaw" hypothesis. We found that the cooling of the Northern Hemisphere caused a southward shift of those PFTs that are indicative of an increased desertification and a retreat of broadleaf forests in West Africa and northern South America. The mega-biomes from our HE1 simulation agreed well with paleovegetation data from tropical Africa and northern South America. Thus, according to our model-data comparison, the reconstructed vegetation changes for the tropical regions around the Atlantic Ocean were physically consistent with the remote effects of a Heinrich event under a glacial climate background.
    Keywords: Description; File name; File size; File type; Uniform resource locator/link to model result file
    Type: Dataset
    Format: text/tab-separated-values, 55 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    Results of Heinrich event 1 simulation from the University of Victoria Earth System-Climate Model (UVic ESCM) and the Community Climate System Model (CCSM3) (2013)
    PANGAEA
    In:  Supplement to: Handiani, Dian Noor; Paul, André; Prange, Matthias; Merkel, Ute; Dupont, Lydie M; Zhang, Xiao (2013): Tropical vegetation response to Heinrich Event 1 as simulated with the UVic ESCM and CCSM3. Climate of the Past, 9(4), 1683-1696, https://doi.org/10.5194/cp-9-1683-2013
    Details
    Publication Date: 2023-01-13
    Description: We investigated changes in tropical climate and vegetation cover associated with abrupt climate change during Heinrich Event 1 (HE1, ca. 17.5 ka BP) using two different global climate models: the University of Victoria Earth System-Climate Model (UVic ESCM) and the Community Climate System Model version 3 (CCSM3). Tropical South American and African pollen records suggest that the cooling of the North Atlantic Ocean during HE1 influenced the tropics through a southward shift of the rain belt. In this study, we simulated the HE1 by applying a freshwater perturbation to the North Atlantic Ocean. The resulting slowdown of the Atlantic Meridional Overturning Circulation was followed by a temperature seesaw between the Northern and Southern Hemispheres, as well as a southward shift of the tropical rain belt. The shift and the response pattern of the tropical vegetation around the Atlantic Ocean were more pronounced in the CCSM3 than in the UVic ESCM simulation. For tropical South America, opposite changes in tree and grass cover were modeled around 10° S in the CCSM3 but not in the UVic ESCM. In tropical Africa, the grass cover increased and the tree cover decreased around 15° N in the UVic ESCM and around 10° N in the CCSM3. In the CCSM3 model, the tree and grass cover in tropical Southeast Asia responded to the abrupt climate change during the HE1, which could not be found in the UVic ESCM. The biome distributions derived from both models corroborate findings from pollen records in southwestern and equatorial western Africa as well as northeastern Brazil.
    Keywords: Description; File name; File size; File type; Uniform resource locator/link to model result file
    Type: Dataset
    Format: text/tab-separated-values, 90 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    Geochemistry and sea surface temperature of ODP Hole 175-1081A (2013)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: 175-1081A; Age, dated; Benguela Current, South Atlantic Ocean; Calculated from UK'37 (Müller et al, 1998); Center for Marine Environmental Sciences; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Joides Resolution; Leg175; MARUM; n-Alkane C31, δ13C; n-Alkane C31, δ13C, standard deviation; n-Alkane C33, δ13C; n-Alkane C33, δ13C, standard deviation; Sample code/label; Sea surface temperature; Sea surface temperature, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 168 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    Hydrogen isotope ratios of terrestrial plant wax from ODP Hole 175-1085A (2013)
    PANGAEA
    Details
    Publication Date: 2023-07-10
    Keywords: 175-1085A; Age model; Benguela Current, South Atlantic Ocean; Calculated; Calculated, see reference(s); Center for Marine Environmental Sciences; Depth, composite; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Joides Resolution; Leg175; MARUM; n-Alkane C31, δD; n-Alkane C31, δD, standard deviation; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 369 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 6
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    Pollen and charcoal analysis of ODP Hole 175-1081A (2013)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: 175-1081A; Age, dated; Amaranthaceae; Asteraceae undifferentiated; Benguela Current, South Atlantic Ocean; Center for Marine Environmental Sciences; Charcoal/(pollen + spores + charcoal) ratio; Cyperaceae; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Joides Resolution; Leg175; MARUM; Poaceae; Pollen, woodland; Pollen and spores; Sample code/label; semidesert, pollen
    Type: Dataset
    Format: text/tab-separated-values, 781 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    Carbon isotope ratios of terrestrial plant wax from ODP Hole 175-1085A (2013)
    PANGAEA
    Details
    Publication Date: 2023-07-10
    Keywords: 175-1085A; Age model; Benguela Current, South Atlantic Ocean; Calculated; Calculated, see reference(s); Center for Marine Environmental Sciences; Depth, composite; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Joides Resolution; Leg175; MARUM; n-Alkane C31, δ13C; n-Alkane C31, δ13C, standard deviation; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 424 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 8
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    Major element analyses of ODP Site 108-659 for the Last Glacial cycle (2013)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 108-659A; 108-659B; AGE; Aluminium, area, total counts; Calcium, area, total counts; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Event label; Joides Resolution; Leg108; Ocean Drilling Program; ODP; Potassium, area, total counts; Sample code/label; Silicon, area, total counts; South Atlantic Ocean; Titanium, area, total counts; X-ray fluorescence core scanner (XRF) II, Bremen, (AVAATECH)
    Type: Dataset
    Format: text/tab-separated-values, 1362 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 9
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    Pollen and age analysis of terrestrial plant wax from ODP Hole 175-1085A (2013)
    PANGAEA
    Details
    Publication Date: 2024-03-06
    Keywords: 175-1085A; Abrus; Abutilon; Acacia; Acanthaceae; Age model; Aizoaceae; Alismataceae; Allophylus; Aloe-type; Amaranthaceae/Chenopodiaceae; Anemia-type; Anthoceros; Anthospermum; Arboreal pollen; Arctotis-type; Asteraceae; Balanites; Benguela Current, South Atlantic Ocean; Bignoniaceae; Borassus-type; Boscia-type; Burkea; Buxus-type madagascaria; Calculated, see reference(s); Calligonum; Cardiospermum; Caryophyllaceae; Cassia-type; Center for Marine Environmental Sciences; Chrozophora; Chrysophyllum; Clematis-type; Cleome; Cliffortia; Coffea-type; Combretum-type; Commiphora; Compositae Liguliflorae; Compositae Tubuliflorae; Compositae Vernonieae; Corchorus; Cotula-type; Counting; Croton-type; Cucurbitaceae; Cussonia; Cyperaceae; Daisy-type; Depth, composite; Detarium; Dialium-type; Dicoma-type; Diospyros; Dodonaea viscosa; Dorstenia; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Ericaceae undifferentiated; Euclea; Euphorbia-type; Flabellaria; Flacourtia; Galium; Garcinia; Gazania-type; Gerbera-type; Gloriosa-type; Gomphrena-type; Grewia; Gunnera perpensa; Hermannia; Hibiscus-type; Hyphaene; Hypoestes type; Ilex cf.. mitis; Indeterminata; Indeterminata/varia; Ixora; Joides Resolution; Justicia-type; Klaineanthus; Kohautia; Lannea; Leg175; Leucadendron; Lithospermum; Lycopodium (Africa); Macaranga-type; Maerua-type; Mallotus; Manilkara; Marker, added; Marker, found; MARUM; Maytenus; Mezoneuron-type; Mussaenda; Myrica; Neurada; Nyctaginaceae; Olea; Olea capensis; Osmunda; Oxygonum; Papilionoideae; Parinari; Parkinsonia; Passerina montana; Paullinia; Pelargonium; Pentzia-type; Petalidium; Petersianthus macrocarpus; Phaeoceros; Phoenix; Phyllanthus; Piliostigma; Plicosepalus; Poaceae undifferentiated; Podocarpus; Pollen, total; Polycarpaea-type; Polygala; Polygonum; Polygonum senegalense-type; Protea; Prunus africana-type; Pteridium; Pteris; Restionaceae; Rhizophora; Rhus; Rhynchosia-type; Ricinus communis; Rubiaceae undifferentiated; Rytigynia; Sample code/label; Sapotaceae/Meliaceae; Sesamum; Solanum; Sorindeia-type; Spirostachys-type; Spores; Spores, monolete; Spores, monolete psilate; Spores, monolete scabrate; Spores, monolete verrucate; Spores, trilete; Spores, trilete echinate; Spores, trilete psilate; Spores, trilete reticulate; Spores, trilete scabrate; Stoebe-type; Tamarindus-type indica; Tarchonanthus/Artemisia-type; Tarenna; Tephrosia; Tetrorchidium; Thymelaeaceae; Tribulus; Trichotomosulcate reticulate; Typha angustifolia-type; Umbilicus; Volume; Welwitschia; Ximenia-type; Zanthoxylum; Ziziphus-type
    Type: Dataset
    Format: text/tab-separated-values, 11520 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 10
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    Plant-wax and alkenone analyses of ODP Hole 108-659B for the Last Glacial cycle (2013)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 108-659B; AGE; Alkenone, unsaturation index UK'37; Average chain length; Calculated, see reference(s); Calculated from UK'37 (Müller et al, 1998); Carbon Preference Index; DRILL; Drilling/drill rig; Joides Resolution; Leg108; n-Alkane C31, δ13C; n-Alkane C31, δ13C, standard deviation; n-Alkane C31, δD; n-Alkane C31, δD, standard deviation; n-Alkane C4 plant; Ocean Drilling Program; ODP; Sample code/label; Sea surface temperature, annual mean; Sea surface temperature, standard deviation; South Atlantic Ocean; Sum n-alkanes C25-C35; Thermo Trace GC - Finnigan MAT 252 (GC/IR-MS); Thermo Trace GC - Thermo Fischer MAT 253 (GC/IR-MS)
    Type: Dataset
    Format: text/tab-separated-values, 551 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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