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Schmidt, Daniela N; Thierstein, Hans R; Bollmann, Jörg (2004): The evolutionary history of size variation of planktic foraminiferal assemblages in the Cenozoic. PANGAEA, https://doi.org/10.1594/PANGAEA.694693, Supplement to: Schmidt, DN et al. (2004): The evolutionary history of size variation of planktic foraminiferal assemblages in the Cenozoic. Palaeogeography, Palaeoclimatology, Palaeoecology, 212(1-2), 159-180, https://doi.org/10.1016/j.palaeo.2004.06.002

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Abstract:
The iterative evolutionary radiation of planktic foraminifers is a well-documented macroevolutionary process. Here we document the accompanying size changes in entire planktic foraminiferal assemblages for the past 70 My and their relationship to paleoenvironmental changes. After the size decrease at the Cretaceous/Paleogene (K/P) boundary, high latitude assemblages remained consistently small. Size evolution in low latitudes can be divided into three major phases: the first is characterized by dwarfs (65-42 Ma), the second shows moderate size fluctuations (42–14 Ma), and in the third phase, planktic foraminifers have grown to the unprecedented sizes observed today.
Our analyses of size variability with paleoproxy records indicate that periods of size increase coincided with phases of global cooling (Eocene and Neogene). These periods were characterized by enhanced latitudinal and vertical temperature gradients in the oceans and high diversity (polytaxy). In the Paleocene and during the Oligocene, the observed (minor) size changes of the largely low-diversity (oligotaxic) assemblages seem to correlate with productivity changes. However, polytaxy per se was not responsible for larger test sizes.
Related to:
Schmidt, Daniela N; Thierstein, Hans R; Bollmann, Jörg; Schiebel, Ralf (2004): Abiotic forcing of plankton evolution in the Cenozoic. Science, 303(5655), 207-210, https://doi.org/10.1126/science.1090592
Project(s):
Coverage:
Median Latitude: -5.500871 * Median Longitude: -169.669338 * South-bound Latitude: -58.441000 * West-bound Longitude: 76.794000 * North-bound Latitude: 30.142333 * East-bound Longitude: -43.488900
Date/Time Start: 1988-03-06T22:30:00 * Date/Time End: 1997-01-27T02:00:00
Event(s):
120-747A * Latitude: -54.811000 * Longitude: 76.794000 * Date/Time Start: 1988-03-06T22:30:00 * Date/Time End: 1988-03-08T17:15:00 * Elevation: -1706.0 m * Penetration: 256 m * Recovery: 227.34 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg120 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 27 cores; 256 m cored; 0 m drilled; 88.8 % recovery
120-748B * Latitude: -58.441000 * Longitude: 78.998100 * Date/Time Start: 1988-03-14T07:30:00 * Date/Time End: 1988-03-15T11:00:00 * Elevation: -1301.0 m * Penetration: 225.1 m * Recovery: 190.15 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg120 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 25 cores; 225.1 m cored; 0 m drilled; 84.5 % recovery
120-748C * Latitude: -58.441000 * Longitude: 78.998100 * Date/Time Start: 1988-03-15T11:00:00 * Date/Time End: 1988-03-23T22:54:00 * Elevation: -1301.0 m * Penetration: 935 m * Recovery: 185.88 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg120 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 87 cores; 760 m cored; 0 m drilled; 24.5 % recovery
Size:
17 datasets

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Datasets listed in this Collection

  1. Schmidt, DN; Thierstein, HR; Bollmann, J (2004): Size of planktic foraminifers of ODP Hole 120-747A on the Kerguelen Plateau, Southern Ocean. https://doi.org/10.1594/PANGAEA.126380
  2. Schmidt, DN; Thierstein, HR; Bollmann, J (2004): Size of planktic foraminifers of ODP Hole 120-748B on the Kerguelen Plateau, Southern Ocean. https://doi.org/10.1594/PANGAEA.126395
  3. Schmidt, DN; Thierstein, HR; Bollmann, J (2004): Size of planktic foraminifers of ODP Hole 120-748C on the Kerguelen Plateau, Southern Ocean. https://doi.org/10.1594/PANGAEA.126396
  4. Schmidt, DN; Thierstein, HR; Bollmann, J (2004): Size of planktic foraminifers of ODP Hole 120-750A on the Kerguelen Plateau, Southern Ocean. https://doi.org/10.1594/PANGAEA.126397
  5. Schmidt, DN; Thierstein, HR; Bollmann, J (2004): Size of planktic foraminifers of ODP Hole 121-758A from Ninetyeast Ridge, Indian Ocean. https://doi.org/10.1594/PANGAEA.126398
  6. Schmidt, DN; Thierstein, HR; Bollmann, J (2004): Size of planktic foraminifers of ODP Hole 122-762B on the Exmouth Plateau, Indian Ocean. https://doi.org/10.1594/PANGAEA.126399
  7. Schmidt, DN; Thierstein, HR; Bollmann, J (2004): Size of planktic foraminifers of ODP Hole 122-762C on the Exmouth Plateau, Indian Ocean. https://doi.org/10.1594/PANGAEA.126400
  8. Schmidt, DN; Thierstein, HR; Bollmann, J (2004): Size of planktic foraminifers of ODP Hole 130-806B on the Ontong Java Plateau, Pacific Ocean. https://doi.org/10.1594/PANGAEA.126401
  9. Schmidt, DN; Thierstein, HR; Bollmann, J (2004): Size of planktic foraminifers of ODP Hole 143-865B from Allison Guyote, Pacific Ocean. https://doi.org/10.1594/PANGAEA.126402
  10. Schmidt, DN; Thierstein, HR; Bollmann, J (2004): Size of planktic foraminifers of ODP Hole 143-865C from Allison Guyote, Pacific Ocean. https://doi.org/10.1594/PANGAEA.126403
  11. Schmidt, DN; Thierstein, HR; Bollmann, J (2004): Size of planktic foraminifers of ODP Hole 154-925A from Ceara Rise, Atlantic Ocean. https://doi.org/10.1594/PANGAEA.126404
  12. Schmidt, DN; Thierstein, HR; Bollmann, J (2004): Size of planktic foraminifers of ODP Hole 154-925B from Ceara Rise, Atlantic Ocean. https://doi.org/10.1594/PANGAEA.126405
  13. Schmidt, DN; Thierstein, HR; Bollmann, J (2004): Size of planktic foraminifers of ODP Hole 154-925E from Ceara Rise, Atlantic Ocean. https://doi.org/10.1594/PANGAEA.126406
  14. Schmidt, DN; Thierstein, HR; Bollmann, J (2004): Size of planktic foraminifers of ODP Hole 171-1050A from Blake Nose, Atlantic Ocean. https://doi.org/10.1594/PANGAEA.126407
  15. Schmidt, DN; Thierstein, HR; Bollmann, J (2004): Size of planktic foraminifers of ODP Hole 171-1051A from Blake Nose, Atlantic Ocean. https://doi.org/10.1594/PANGAEA.126408
  16. Schmidt, DN; Thierstein, HR; Bollmann, J (2004): Size of planktic foraminifers of ODP Hole 171-1051B from Blake Nose, Atlantic Ocean. https://doi.org/10.1594/PANGAEA.126409
  17. Schmidt, DN; Thierstein, HR; Bollmann, J (2004): Size of planktic foraminifers of ODP Site 171-1049 from Blake Nose, Atlantic Ocean. https://doi.org/10.1594/PANGAEA.126410