Skip to main content
×
×
Home

Combined Marine Proxy and Pollen Analyses Reveal Rapid Iberian Vegetation Response to North Atlantic Millennial-Scale Climate Oscillations

  • Katherine H. Roucoux (a1), Nicholas J. Shackleton (a1), Lucia de Abreu (a1), Joachim Schönfeld (a2) and Polychronis C. Tzedakis (a3)...
Abstract
Abstract

A deep-sea sediment core from the western Portuguese margin has provided a continuous, high-resolution record of millennial-scale climatic oscillations during the interval 9000–65,000 yr B.P. Pollen analysis of the same sequence allows direct, in situ assessment of the phase relationship between the North Atlantic climate system and vegetation changes on the adjacent landmass. This demonstrates for the first time that variability in NW Iberian tree population size closely tracked millennial-scale climate variability.

Copyright
References
Hide All
Abrantes F. (1991). Increased upwelling off Portugal during the last glaciation: Diatom evidence. Marine Micropalaeotology 17, 285310.
Abreu L. (2000). High Resolution Palaeoceanography off Portugal during the Last Two Glacial Cycles. University of Cambridge, p. 370
Allen J.R.M., Brandt U., Brauer A., Hubberten H.-W., Huntley B., Keller J., Kraml M., Mackensen A., Mingram J., Negendank J.F.W., Nowaczyk N.R., Oberhansli H., Watts W.A., Wulf S., and Zolitschka B. (1999). Rapid environmental changes in southern Europe during the last glacial period. Nature 400, 740742.
Baas J.H., Mienert J., Abrantes F., and Prins A. (1997). Late Quaternary sedimentation on the Portuguese continental margin: Climate-related processes and products. Palaeogeography, Palaeoclimatology, and Palaeoecology 130, 123.
Bond G., Heinrich H., Broecker W., Labeyrie L., McManus J., Andrews J., Huon S., Jantschik R., Clasen S., Simet C., Tedesco K., Klas M., Bonani G., and Ivy S. (1992). Evidence for massive discharges of icebergs into the North Atlantic ocean during the last glacial period. Nature 360, 245251.
Bond G., Broecker W., Johnsen S., McManus J., Labeyrie L., Jouzel J., and Bonani G. (1993). Correlations between climate records from North Atlantic sediments and Greenland ice. Nature 365, 143147.
Cayre O., Lancelot Y., Vincent E., and Hall M. (1999). Paleoceanographic reconstructions from planktonic foraminifera off the Iberian Margin: Temperature, salinity, and Heinrich events. Paleoceanography 14, 384396.
Dansgaard W., Johnsen S.J., Clausen H.B., Dahl-Jensen D., Gundestrup N.S., Hammer C.U., Hvidberg C.S., Steffensen J.P., Sveinbjörnsdóttir A.E., Jouzel J., and Bond G. (1993). Evidence for general instability of past climate from a 250-kyr ice-core record. Nature 364, 218220.
de Beaulieu J.-L., and Reille M. (1984). A long Upper Pleistocene pollen record from Les Echets, near Lyon, France. Boreas 13, 111132.
Follieri M., Giardini M., Magri D., and Sadori L. (1998). Palynostratigraphy of the last glacial period in the volcanic region of central Italy. Quaternary International 47/48, 320.
Groot J.J., and Groot C.R. (1966). Marine palynology: Possibilities, limitations, problems. Marine Geology 4, 387395.
Haynes R., and Barton E.D. (1990). A poleward flow along the Atlantic coast of the Iberian Peninsula. Journal of Geophysical Research 95, 11,42511,441.
Heusser L.E., and Balsam W.L. (1977). Pollen distribution in the NE Pacific Ocean. Quaternary Research 7, 4562.
Johnsen S.J., Clausen H.B., Dansgaard W., Gundestrup N.S., Hammer C.U., Andersen U., Andersen K.K., Hvidberg C.S., Dahl-Jensen D., Steffensen J.P., Shoji H., Sveinbjörnsdóttir A.E., White J.W.C., Jouzel J., and Fisher D. (1997). The δ18O record along the Greenland Ice Core Project deep ice core and the problem of possible Eemian climatic instability. Journal of Geophysical Research 102, 26,39726,410.
Lebreiro S.M., Moreno J.C., McCave I.N., and Weaver P.P.E. (1996). Evidence for Heinrich layers off Portugal (Tore Seamount: 39°N, 12°W). Marine Geology 131, 4756.
McManus J.F., Oppo D.W., and Cullen J.L. (1999). A 0.5-million-year record of millennial-scale climate variability in the North Atlantic. Science 283, 971975.
Moore P.D., Webb J.A., and Collinson M.E. (1991). Pollen Analysis. Blackwell, Oxford. p. 216
Thomson J., Nixon S., Summerhayes C.P., Schonfeld J., Zahn R., and Grootes P. (1999). Implications for sedimentation changes in the Iberian margin over the last two glacial/interglacial transitions from (230Thexcess)0 systematics. Earth and Planetary Science Letters 145, 255270.
Thomson J., Nixon S., Summerhayes C.P., Rohling E.J., Schonfeld J., Zahn R., Grootes P., Abrantes F., Gaspar L., and Vaqueiro S. (2000). Enhanced productivity on the Iberian margin during glacial/interglacial transitions revealed by barium and diatoms. Journal of the Geological Society, London 157, 667677.
Turon J.-L. (1984). Le palynoplancton dans l'environment actuel de l'Atlantique du nord oriental: évolution climatique et hydrologique depuis le dernier maximum glaciaire. Mémoires de l'Institute Géologique du Bassin d'Aquitaine 313
Ecological Study of the Mediterranean Zone. Vegetation Map of the Mediterranean Zone. UNESCO, Paris. p. 90
van Andel T. H., and Tzedakis P. C. Priority and opportunity: Reconstructing the European Middle Palaeolithic climate and landscape. In Science in Archaeology Bailey J., Ed. pp. 3745. English Heritage, London.
van der Knaap W.O., and van Leeuwen J.F.N. (1997). Late glacial and early Holocene vegetation succession, altitudinal zonation and climatic change in the Serra da Estrela, Portugal. Review of Palaeobotany and Palynology 97, 239285.
Watts W.A., Allen J.R.M., and Huntley B. (2000). Palaeoecology of three interstadial events during oxygen-isotope Stage 3 and 4: A lacustrine record from Lago Grande di Monticchio, southern Italy. Palaeogeography, Palaeoclimatology, and Palaeoecology 155, 8393.
Webb T. III. (1986). Is vegetation in equilibrium with climate? How to interpret late-Quaternary pollen data. Vegetatio 67, 7591.
Zahn R. North Atlantic Thermohaline Circulation during the Last Glacial Period: Evidence for Coupling between Meltwater Events and Convective Instability. GEOMAR Report, 63, Kiel, Germany., 133, pp.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Quaternary Research
  • ISSN: 0033-5894
  • EISSN: 1096-0287
  • URL: /core/journals/quaternary-research
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords:

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 1 *
Loading metrics...

Abstract views

Total abstract views: 256 *
Loading metrics...

* Views captured on Cambridge Core between 20th January 2017 - 25th February 2018. This data will be updated every 24 hours.