Hostname: page-component-7c8c6479df-p566r Total loading time: 0 Render date: 2024-03-28T08:31:13.336Z Has data issue: false hasContentIssue false

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

Published online by Cambridge University Press:  20 January 2017

Katherine H. Roucoux
Affiliation:
Godwin Institute for Quaternary Research, Godwin Laboratory, Department of Earth Sciences, University of Cambridge, New Museums Site, Pembroke Street, Cambridge, CB2 3SA, United Kingdom
Nicholas J. Shackleton
Affiliation:
Godwin Institute for Quaternary Research, Godwin Laboratory, Department of Earth Sciences, University of Cambridge, New Museums Site, Pembroke Street, Cambridge, CB2 3SA, United Kingdom
Lucia de Abreu
Affiliation:
Godwin Institute for Quaternary Research, Godwin Laboratory, Department of Earth Sciences, University of Cambridge, New Museums Site, Pembroke Street, Cambridge, CB2 3SA, United Kingdom
Joachim Schönfeld
Affiliation:
GEOMAR Research Center for Marine Geosciences, Wischhofstr., 1-3, Kiel, D-24148, Germany
Polychronis C. Tzedakis
Affiliation:
Godwin Institute for Quaternary Research, Department of Geography, University of Cambridge, Downing Site, Downing Place, Cambridge, CB2 3EN, United Kingdom

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.

Type
Short Paper
Copyright
University of Washington

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Abrantes, F. (1991). Increased upwelling off Portugal during the last glaciation: Diatom evidence. Marine Micropalaeotology 17, 285310.CrossRefGoogle Scholar
Abreu, L. (2000). High Resolution Palaeoceanography off Portugal during the Last Two Glacial Cycles. University of Cambridge, p. 370 Google Scholar
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.CrossRefGoogle Scholar
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.CrossRefGoogle Scholar
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.CrossRefGoogle Scholar
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.CrossRefGoogle Scholar
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.CrossRefGoogle Scholar
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.Google Scholar
de Beaulieu, J.-L., and Reille, M. (1984). A long Upper Pleistocene pollen record from Les Echets, near Lyon, France. Boreas 13, 111132.Google Scholar
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.CrossRefGoogle Scholar
Groot, J.J., and Groot, C.R. (1966). Marine palynology: Possibilities, limitations, problems. Marine Geology 4, 387395.CrossRefGoogle Scholar
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.CrossRefGoogle Scholar
Heusser, L.E., and Balsam, W.L. (1977). Pollen distribution in the NE Pacific Ocean. Quaternary Research 7, 4562.CrossRefGoogle Scholar
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.CrossRefGoogle Scholar
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.Google Scholar
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.CrossRefGoogle ScholarPubMed
Moore, P.D., Webb, J.A., and Collinson, M.E. (1991). Pollen Analysis. Blackwell, Oxford. p. 216 Google Scholar
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.CrossRefGoogle Scholar
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.CrossRefGoogle Scholar
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 Google Scholar
Ecological Study of the Mediterranean Zone. Vegetation Map of the Mediterranean Zone. UNESCO, Paris. p. 90 Google Scholar
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.Google Scholar
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.CrossRefGoogle Scholar
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.CrossRefGoogle Scholar
Webb, T. III. (1986). Is vegetation in equilibrium with climate? How to interpret late-Quaternary pollen data. Vegetatio 67, 7591.CrossRefGoogle Scholar
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.Google Scholar