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Jian, Zhimin; Wang, Liping; Kienast, Markus; Sarnthein, Michael; Kuhnt, Wolfgang; Lin, Hui-Ling; Wang, Pinxian (1999): Benthic foraminifera of the South China Sea. PANGAEA, https://doi.org/10.1594/PANGAEA.736912, Supplement to: Jian, Zhimin; Wang, Luejiang; Kienast, Markus; Sarnthein, Michael; Kuhnt, Wolfgang; Lin, Hui-Ling; Wang, Pinxian (1999): Benthic foraminiferal paleoceanography of the South China Sea over the last 40,000 years. Marine Geology, 156(1-4), 159-186, https://doi.org/10.1016/S0025-3227(98)00177-7

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Abstract:
Benthic foraminifera in gravity and piston cores from two sites of the northern and southern slopes of the South China Sea (SCS) were analyzed to evaluate changes in surface productivity and deep-water mass characteristics over the last 40,000 years. Our observations suggest that changes in organic carbon flux, that is food supply, and chemical and/or physical properties of the ambient water mass may be the two primary and intercorrelated factors controlling the distribution patterns of benthic foraminifera. When organic carbon flux increased above 3.5 g C m**-2 yr**-1 in the southern SCS during the last glacial maximum and in the northern SCS during the first part of the Holocene around 10 ka B.P., a group of detritus feeders including Bulimina aculeata and Uvigerina peregrina dominated the benthic foraminiferal assemblage as shown by relative abundance (%) and accumulation rates. This may reflect episodes of increased surface productivity, possibly induced by increased input of nutrients from nearby river runoff. Suspension feeders such as Cibicidoides wuellerstorfi and a group of 'opportunistic' species including Oridorsalis umbonatus, Melonis barleeanum and Chilostomella ovoidea gradually became more abundant than detritus feeders as soon as the organic carbon flux decreased to 2.5-3.5 g C m**-2 yr**-1. Similar glacial to interglacial changes in relative abundance and accumulation rates were observed in both cores for a number of species, including Eggerella bradyi, Globocassidulina subglobosa, Astrononion novozealandicum, Sphaeroidina bulloides and Cibicidoides robertsonianus. These changes were not correlated to the distribution patterns of organic carbon in both cores and may have been related to yet unspecified changes in chemical and/or physical properties of the ambient water mass, independent of changes in organic carbon flux.
Coverage:
Median Latitude: 11.741667 * Median Longitude: 114.281333 * South-bound Latitude: 6.158333 * West-bound Longitude: 112.213333 * North-bound Latitude: 20.116667 * East-bound Longitude: 117.383333
Date/Time Start: 1994-05-05T00:00:00 * Date/Time End: 1994-06-01T00:00:00
Event(s):
GIK17940-2 * Latitude: 20.116667 * Longitude: 117.383333 * Date/Time: 1994-05-05T00:00:00 * Elevation: -1727.0 m * Location: South China Sea * Campaign: SO95 (MONITOR MONSUN) * Basis: Sonne * Method/Device: Gravity corer (Kiel type) (SL)
GIK17964-2 * Latitude: 6.158333 * Longitude: 112.213333 * Date/Time: 1994-06-01T00:00:00 * Elevation: -1556.0 m * Penetration: 22 m * Location: South China Sea * Campaign: SO95 (MONITOR MONSUN) * Basis: Sonne * Method/Device: Piston corer (Kiel type) (KOL) * Comment: TWC 115 cm
GIK17964-3 * Latitude: 6.158333 * Longitude: 112.213333 * Date/Time: 1994-06-01T00:00:00 * Elevation: -1556.0 m * Penetration: 15 m * Location: South China Sea * Campaign: SO95 (MONITOR MONSUN) * Basis: Sonne * Method/Device: Gravity corer (Kiel type) (SL)
Size:
15 datasets

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Datasets listed in this publication series

  1. Jian, Z; Wang, L; Kienast, M et al. (1999): (Appendix A) Abundance of benthic foraminifera in sediment core GIK17940-2. https://doi.org/10.1594/PANGAEA.736910
  2. Jian, Z; Wang, L; Kienast, M et al. (1999): (Appendix B) Abundance of benthic foraminifera in sediment cores GIK17964-3 and GIK17964-2. https://doi.org/10.1594/PANGAEA.736911
  3. Jian, Z; Wang, L; Kienast, M et al. (2003): Benthic foraminifera distribution of sediment core GIK17940-2. https://doi.org/10.1594/PANGAEA.115723
  4. Jian, Z; Wang, L; Kienast, M et al. (2003): Benthic foraminifera distribution of sediment core GIK17964-2. https://doi.org/10.1594/PANGAEA.115724
  5. Jian, Z; Wang, L; Kienast, M et al. (2003): Benthic foraminifera distribution of sediment core GIK17964-3. https://doi.org/10.1594/PANGAEA.115725
  6. Jian, Z; Wang, L; Kienast, M et al. (2003): Benthic foraminifera diversity and species abundance of sediment core GIK17940-2. https://doi.org/10.1594/PANGAEA.115705
  7. Jian, Z; Wang, L; Kienast, M et al. (2003): Benthic foraminifera diversity and species abundance of sediment core GIK17964-2. https://doi.org/10.1594/PANGAEA.115702
  8. Jian, Z; Wang, L; Kienast, M et al. (2003): Benthic foraminifera diversity and species abundance of sediment core GIK17964-3. https://doi.org/10.1594/PANGAEA.115703
  9. Jian, Z; Wang, L; Kienast, M et al. (2003): Calcium carbonate and total organic carbon (TOC) of sediment core GIK17940-2. https://doi.org/10.1594/PANGAEA.113006
  10. Jian, Z; Wang, L; Kienast, M et al. (2003): Calcium carbonate content of sediment core GIK17940-2. https://doi.org/10.1594/PANGAEA.115757
  11. Jian, Z; Wang, L; Kienast, M et al. (2003): Calcium carbonate content of sediment core GIK17964-2. https://doi.org/10.1594/PANGAEA.115700
  12. Jian, Z; Wang, L; Kienast, M et al. (2003): Calcium carbonate content of sediment core GIK17964-3. https://doi.org/10.1594/PANGAEA.115701
  13. Jian, Z; Wang, L; Kienast, M et al. (2003): Carbon analysis on sediment core GIK17940-2. https://doi.org/10.1594/PANGAEA.115756
  14. Jian, Z; Wang, L; Kienast, M et al. (2003): Carbon analysis on sediment core GIK17964-2. https://doi.org/10.1594/PANGAEA.115698
  15. Jian, Z; Wang, L; Kienast, M et al. (2003): Carbon analysis on sediment core GIK17964-3. https://doi.org/10.1594/PANGAEA.115699