Palynology of the Last 680,000 Years of ODP Site 658 (off NW-Africa):fluctuations in paleowind systems

  • Lydie M. Dupont
Part of the NATO ASI Series book series (ASIC, volume 282)


Sediments from ODP Site 658 at 21°N west of Cap Blanc show relatively high pollen concentrations and were deposited at high sedimentation rates. Detailed pollen analysis of the upper 100 m provide an unique record of vegetation and climate of NW Africa for the last 680 ka. With the help of pollen tracers, an estimate is made for the contribution of different transport systems to the total influx of the pollen taxa. High influx values for Poaceae and Cyperaceae that were transported by the African Easterly Jet (AEJ), indicate a northern position of the Sahel-Sahara boundary during periods with warm and humid conditions. During periods with cold and arid conditions the influx values for the NE trade wind transported pollen rise. On the average, pollen transport by the NE trade-winds increases during the last 680 ka; periods with warmest and most humid conditions occur only during the earlier part of the Brunhes Chron.


Transport Capacity Pollen Production Arid Condition Pollen Taxon High Influx 
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  1. Adams, L.J., 1987. Ein Wasser-und Energiebilanz-Model von abflu?losen Seen und seine Anwendung in der Paläoklimatologie von Nordwest-Afrika. Berichte des Instituts für Meteorologie und Klimatologie der Universität Hannover, 29: 127 pp.Google Scholar
  2. Agwu, C.O.C. and Beug, H.-J., 1982. Palynological studies of marine sediments off the West African coast. ″Meteor″ Forsch.-Ergebnisse C, 36: 1–30.Google Scholar
  3. Caratini, C., Bellet, J. and Tissot, C., 1979. Etude microscopique de la matière organique: palynologie et palynofaciès. Orgon, III: 215–265.Google Scholar
  4. Chuey, J.M., Rea, D.K. and Pisias, N.G., 1987. Late Pleistocene paleoclimatology of the central equatorial Pacific: a quantitative record of eolian and carbonate deposition. Quaternary Research, 28 (3): 323–339.CrossRefGoogle Scholar
  5. Cour, P. and Duzer,D., 1976. Persistance d’un climat hyperaride au Sahara Central et Méridional au cours de l’Holocène. Revue de Géographie Physique et de Géologie Dynamique 2, 18 (2–3): 175–198.Google Scholar
  6. Diester-Haass, L. and Müller, P.J., 1979. Processes influencing sand fraction composition and organic matter content in surface sediments off W Africa (12–19°). ″Meteor″-Forsch. Ergebn., C, 31: 21–47.Google Scholar
  7. Dupont, L.M., Beug, H.-J, Stalling, H. and Tiedemann, R., submitted. First palynological results from ODP Site 658 at 21°N west off Africa: pollen as climate indicators. In: W.F. Ruddiman, M. Sarnthein, J. Baldauf et al. (eds.). Proceedings of the Ocean Drilling Program. Leg 108, Vol. B. U.S. Govt. Print. Off., Washington.Google Scholar
  8. Heusser, L.E., 1986/7. Pollen in marine cores: evidence of past climates. Oceanus, 29(4): 64–70.Google Scholar
  9. Hooghiemstra, H., 1988a. Palynological Records from Northwest Atlantic marine sediments. A general outline of the interpretation of the pollen signal. Phil. Trans. R. Soc. Lond., B 318: 431–449.CrossRefGoogle Scholar
  10. Hooghiemstra, H., 1988b. Changes of major wind belts and vegetation zones in NW Africa 20,000–5,000 yr B.P. as deduced from a marine pollen record near Cape Blanc. Rev. Palaeobot. Palynol., 55 (1–3): 101–140.CrossRefGoogle Scholar
  11. Hooghiemstra, H., Agwu, C.O.C. and Beug H.-J., 1986. Pollen and spore distribution in recent marine sediments: a record of NW-African seasonal wind patterns and vegetation belts. ″Meteor″ Forsch. Ergebn., C, 40: 87–135.Google Scholar
  12. Hooghiemstra, H., Bechler, A. and Beug, H.-J., 1987. Isopollen maps for 18,000 yr BP of the Atlantic offshore of Northwest Africa: evidence for palaeo-wind circulation. Paleoceanography, 2 (6): 561–582.CrossRefGoogle Scholar
  13. Jansen, J.H.F., Kuijpers, A. and Troelstra, S.R., 1986. A Mid-Brunhes climatic event: long-term changes in global atmosphere and ocean circulation. Science, 232: 619–622.CrossRefGoogle Scholar
  14. Kutzbach, J.E. and Street-Perrot, F.A., 1985. Milankovitch forcing of fluctuations in the level of tropical lakes from 18 to 0 kyr BP. Nature, 317: 139–134.CrossRefGoogle Scholar
  15. Maley, J., 1983. Histoire de la végétation et du climat de l’Afrique nord-tropicale au Quaternaire récent. Bothalia 14, (3–4): 377–389.Google Scholar
  16. Lezine, A.M., 1987. Paléoenvironnements végétaux d’Afrique nord tropicale depuis 12 000 BP. Thèse, Université Aix-Marseille II, Marseille: 180 p.Google Scholar
  17. Melia, M.B., 1984. The distribution and relationship between palynomorphs in aerosols and Deep-sea sediments off the coast on Northwest Africa. Marine Geology, 58: 345–371.CrossRefGoogle Scholar
  18. Pisias, N.G. and Rea, D.K., 1988. Late Pleistocene paleoclimatology of the central equatorial pacific: sea surface response to the southeast trade winds. Paleoceanography, 3 (1): 21–37.CrossRefGoogle Scholar
  19. Prell, W.L. and Kutzbach, J.E., 1987. Monsoon variability over the past 150,000 years. J. Geophysical Research, 92 (D7): 8411–8425.CrossRefGoogle Scholar
  20. Rognon, P., 1985. The desert. Total information, 10: 4–10.Google Scholar
  21. Rognon, P., 1987. Les phases d’aridité du Pléistocène supérieur et de l’Holocène au Sahara, arguments sédimentologiques. Palaeoecology of Africa, 18: 111–133.Google Scholar
  22. Rossignol-Strick, M., 1983. African monsoons, an immediate climate response to orbital insolation. Nature, 304: 46–49.CrossRefGoogle Scholar
  23. Rossignol-Strick, M. and Duzer, D.,1979a. Late Quaternary pollen and dinoflagellate cystes in marine cores off West Africa. ″Meteor″ Forsch. Ergebn., C, 30: 1–14.Google Scholar
  24. Rossignol-Strick, M. and Duzer, D., 1979b. West African vegetation and climate since 22,500 BP from deep-sea cores palynology. Pollen et Spores, 21 (1–2): 105–134.Google Scholar
  25. Ruddiman, W.F., Sarnthein, M., Baldauf, J. et al., 1987. Initial Reports of the DSDP/ODP vol. 108 A. U.S. Govt. Print. Off., Washington.Google Scholar
  26. Sarnthein, M and Koopmann, B., 1980. Late Quaternary deep-sea record on Northwest African dust supply and wind circulation. Palaeoecology of Africa, 12: 239–253.Google Scholar
  27. Sarnthein, M., Tetzlaff, G., Koopmann, B., Wolter, K. and Pflaumann, U., 1981. Glacial and interglacial wind regimes over the eastern subtropical Atlantic and North-West Africa. Nature, 293: 193–196.CrossRefGoogle Scholar
  28. Sarnthein, M., Thiede, J., Pflaumann, U., Erlenkeuser, H., Fütterer, D., Koopmann, B., Lange, H. and Seibold, E., 1982. Atmospheric and oceanic circulation patterns off Northwest Africa during the past 25 million years. In: U. von Rad et al. (eds.): Geology of the Northwest African Continental Margin. Springer, Heidelberg: 545–604.Google Scholar
  29. Sarnthein, M. and Tiedemann, R., submitted. Towards a high-resolution stable isotope stratigraphy of the last 3.3 Million years, ODP Sites 658 and 659 off Northwest Africa. In: W.F. Ruddiman, M. Sarnthein, J. Baldauf et al. (eds.). Proceedings of the Ocean Drilling Program. Leg 108, Vol. B. U.S. Govt. Print. Off., Washington.Google Scholar
  30. Schramm, C.T., 1985. Implications of radiolarian assemblages for the Late Quaternary paleoceanography of the eastern equatorial Pacific. Quaternary Research, 24 (2): 204–218.CrossRefGoogle Scholar
  31. Schulz, E., 1987. Die holozäne Vegetation der zentralen Sahara (N-Mali, N-Niger, SW-Lybien). Palaeoecology of Africa 18: 143–162.Google Scholar
  32. White, F., 1983. The vegetation of Africa. Natural resources research, XX. Unesco: 356 p.Google Scholar

Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • Lydie M. Dupont
    • 1
  1. 1.Institute for Palynology and Quaternary SciencesUniversity of GöttingenGöttingenGermany

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