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Numberger, Lea; Hemleben, Christoph; Hoffmann, Ramona; Mackensen, Andreas; Schulz, Hartmut; Wunderlich, Joern-Michael; Kucera, Michal (2009): Abundance patterns and isotopic signals of morphotypes of Globigerinoides ruber [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.729188, Supplement to: Numberger, L et al. (2009): Habitats, abundance patterns and isotopic signals of morphotypes of the planktonic foraminifer Globigerinoides ruber (d'Orbigny) in the eastern Mediterranean Sea since the Marine Isotopic Stage 12. Marine Micropaleontology, 73(1-2), 90-104, https://doi.org/10.1016/j.marmicro.2009.07.004

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Abstract:
The chemical composition of shells of the planktonic foraminifer Globigerinoides ruber (white) is frequently used to determine past sea surface conditions. Recently, it has been shown that arbitrarily defined morphotypes within this species exhibit different chemical and isotopic signatures. Here, we investigate the occurrence through time and in space of morphological types of G. ruber (white) in late Quaternary and Holocene sediments of the central and the eastern Mediterranean Sea. In 115 samples representing two distinct time intervals (MIS 1-2 and MIS 9-12) at ODP Site 964 and the piston core GeoTü-SL96, we have defined three morphological types within this species and determined their relative abundances and stable isotopic composition. A quantitative analysis of morphological variation within G. ruber (white) in four samples revealed that the subjectively defined morphotypes occupy separate segments of a continuous and homogenous morphospace. We further show that the abundance of the morphotypes changes significantly between glacials and interglacials and that the three morphotypes of G. ruber show significant offsets in their stable isotopic composition. These offsets are consistent within glacial and interglacial stages but their sign is systematically reversed between the two Sites. Since the isotopic shifts among the three G. ruber morphotypes are systematic and often exceed 1per mil, their understanding is essential for the interpretation of all G. ruber-based proxy records for the paleoceanographic development of the Mediterranean during the late Quaternary.
Project(s):
Ocean Drilling Program (ODP)
Paleoceanography at Tübingen University (GeoTü)
Coverage:
Median Latitude: 33.931211 * Median Longitude: 18.716567 * South-bound Latitude: 32.766667 * West-bound Longitude: 17.749700 * North-bound Latitude: 36.260300 * East-bound Longitude: 19.200000
Date/Time Start: 1995-03-17T20:14:00 * Date/Time End: 1995-03-18T21:30:00
Event(s):
160-964A * Latitude: 36.260300 * Longitude: 17.749700 * Date/Time Start: 1995-03-17T20:14:00 * Date/Time End: 1995-03-18T21:30:00 * Elevation: -3658.0 m * Penetration: 101.8 m * Recovery: 106.12 m * Location: Eastern Basin * Campaign: Leg160 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 11 core; 101.8 m cored; 0 m drilled; 104.2 % recovery
GeoTu_SL096 * Latitude: 32.766667 * Longitude: 19.200000 * Elevation: -1399.0 m * Recovery: 8.02 m * Location: Mediterranean Sea * Campaign: M51/3 * Basis: Meteor (1986) * Method/Device: Gravity corer (Kiel type) (SL)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
9 datasets

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Datasets listed in this publication series

  1. Numberger, L; Hemleben, C; Hoffmann, R et al. (2009): (Appendix 1e) Comparison of stable isotope measurements of ODP Hole 160-964A. https://doi.org/10.1594/PANGAEA.729172
  2. Numberger, L; Hemleben, C; Hoffmann, R et al. (2009): (Appendix 1b) Abundance and stable oxygen and carbon isotope ratios of Globigerinoides ruber in the Holocene section of ODP Hole 160-964A. https://doi.org/10.1594/PANGAEA.729171
  3. Numberger, L; Hemleben, C; Hoffmann, R et al. (2009): (Appendix 1d) Abundance and stable oxygen and carbon isotope ratios of Globigerinoides ruber from MIS 11 of ODP Hole 160-964A. https://doi.org/10.1594/PANGAEA.729170
  4. Numberger, L; Hemleben, C; Hoffmann, R et al. (2009): (Appendix 2) Morphological measurements on Globigerinoides ruber (white) specimens of sediment core GeoTu_SL096. https://doi.org/10.1594/PANGAEA.729173
  5. Numberger, L; Hemleben, C; Hoffmann, R et al. (2009): (Appendix 1a) Abundance and stable oxygen and carbon isotope ratios of Globigerinoides ruber in the Holocene section of sediment core GeoTu_SL096. https://doi.org/10.1594/PANGAEA.729168
  6. Numberger, L; Hemleben, C; Hoffmann, R et al. (2009): (Appendix 1c) Abundance and stable oxygen and carbon isotope ratios of Globigerinoides ruber from MIS 11 of sediment core GeoTu_SL096. https://doi.org/10.1594/PANGAEA.729169
  7. Numberger, L; Hemleben, C; Hoffmann, R et al. (2009): (Appendix 3c) Loadings of multivariate analysis of variance - canonical variants analysis for morphometric measurements on Globigerinoides ruber of sediment core GeoTu_SL096. https://doi.org/10.1594/PANGAEA.729179
  8. Numberger, L; Hemleben, C; Hoffmann, R et al. (2009): (Appendix 3b) Loadings of principal component analysis for morphometric measurements on Globigerinoides ruber of sediment core GeoTu_SL096. https://doi.org/10.1594/PANGAEA.729178
  9. Numberger, L; Hemleben, C; Hoffmann, R et al. (2009): (Appendix 3a) Eigenvalues and variance of principal component analysis for morphometric measurements on Globigerinoides ruber of sediment core GeoTu_SL096. https://doi.org/10.1594/PANGAEA.729176