Zhao, X; Dupont, Lydie M; Schefuß, Enno; Meadows, Michael E; Hahn, A; Wefer, Gerold (2015): Pollen and spores of sites GeoB8331 and GeoB8323, Namaqualand Mudbelt, Holocene South Africa. PANGAEA, https://doi.org/10.1594/PANGAEA.855836, Supplement to: Zhao, X et al. (2016): Holocene vegetation and climate variability in the winter and summer rainfall zones of South Africa. The Holocene, 26(6), 843-857, https://doi.org/10.1177/0959683615622544
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To better understand Holocene vegetation and hydrological changes in South Africa, we analyzed pollen and microcharcoal records of two marine sites GeoB8331 and GeoB8323 from the Namaqualand mudbelt offshore the west coast of South Africa covering the last 9900 and 2200 years, respectively. Our data corroborate findings from literature that climate developments apparently contrast between the summer rainfall zone (SRZ) and winter rainfall zone (WRZ) over the last 9900 years, especially during the early and middle Holocene. During the early Holocene (9900-7800 cal.yr BP), a minimum of grass pollen suggests low summer rainfall in the SRZ, and the initial presence of Renosterveld vegetation indicates relatively wet conditions in the WRZ. Towards the middle Holocene (7800-2400 cal. yr BP), a rather moist savanna/grassland rich in grasses suggests higher summer rainfall in the SRZ resulting from increased austral summer insolation and a decline of fynbos vegetation accompanied by an increasing Succulent Karoo vegetation in the WRZ possibly suggests a southward shift of the Southern Hemisphere westerlies. During the last 2200 years, a trend towards higher aridity was observed for the SRZ, while the climate in the WRZ remained relatively stable. The Little Ice Age (ca. 700-200 cal. yr BP) was rather cool in both rainfall zones and drier in the SRZ while wetter in the WRZ.
Median Latitude: -30.583458 * Median Longitude: 17.468458 * South-bound Latitude: -32.031500 * West-bound Longitude: 16.714333 * North-bound Latitude: -29.135333 * East-bound Longitude: 18.221500
Date/Time Start: 2003-01-29T16:13:00 * Date/Time End: 2003-01-31T11:40:00
Datasets listed in this publication series
- Dupont, LM; Zhao, X (2015): Microcharcoal concentration of sediment core GeoB8323-1. https://doi.org/10.1594/PANGAEA.855832
- Dupont, LM; Zhao, X (2015): Microcharcoal concentration of sediment core GeoB8323-2. https://doi.org/10.1594/PANGAEA.855833
- Dupont, LM; Zhao, X (2015): Microcharcoal concentration of sediment core GeoB8331-2. https://doi.org/10.1594/PANGAEA.855834
- Dupont, LM; Zhao, X (2015): Microcharcoal concentration of sediment core GeoB8331-4. https://doi.org/10.1594/PANGAEA.855835
- Dupont, LM; Zhao, X (2015): Pollen analysis of sediment core GeoB8323-1. https://doi.org/10.1594/PANGAEA.855763
- Dupont, LM; Zhao, X (2015): Pollen analysis of sediment core GeoB8323-2. https://doi.org/10.1594/PANGAEA.855772
- Dupont, LM; Zhao, X (2015): Pollen analysis of sediment core GeoB8331-2. https://doi.org/10.1594/PANGAEA.855758
- Dupont, LM; Zhao, X (2015): Pollen analysis of sediment core GeoB8331-4. https://doi.org/10.1594/PANGAEA.855771