High-resolution pollen data from ODP Site 1233 (41 degrees 0.005S. 74 degrees 26.992W, 838m water depth) provide a continuous, chronostratigraphically controlled similar to 50,000-yr record of regional changes in vegetation from temperate South America. Deposited similar to 38 km west of the transition from northern, summer-green, lowland forest to southern evergreen rain forest, the 135 m core documents the comparatively brief Holocene development of thermophilous vegetation (Lowland Deciduous Beech Forest and Valdivian Evergreen Forest), and the expansion of glacial, subantarctic vegetation (North Patagonian Evergreen Forest-Subantarctic Parkland) during Marine Isotope State (MIS) 2 and 3. Systematic variability in these terrestrial climate proxies that reflect latitudinal movement of the Southern westerlies is mirrored in co-eval ocean conditions inferred from radiolaria census data and in Antarctic climate records. (c) 2005 Elsevier Ltd. All rights reserved.
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