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Late Pleistocene and Holocene palaeoenvironmental changes in central Tierra del Fuego (~54°S) inferred from pollen analysis

Late Pleistocene and Holocene palaeoenvironmental changes in central Tierra del Fuego (~54°S)... A pollen record was obtained from a coring site at La Correntina mire (54°33′S, 66°59′W, 206 m a.s.l.) to the east of Lago Fagnano, centre of Tierra del Fuego. The results indicate that the valley bottom was free of ice shortly before 15,400 cal bp. Pioneer vegetation included dwarf shrub heaths, grasses and herbs with sparsely distributed Nothofagus trees, indicative of dry conditions. Nothofagus expanded by 10,000 cal bp and the forest-steppe ecotone was established by 9,400 cal bp, implying warm conditions and an increase in available moisture. After ca. 5,000 cal bp, the development of a closed-canopy forest is interpreted as the result of wetter and colder conditions. After 3,000 cal bp, Nothofagus forest became more open, and by about 400 cal bp there was a further decline of the forest. A closed-canopy Nothofagus forest re-established after 400 cal bp. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Vegetation History and Archaeobotany Springer Journals

Late Pleistocene and Holocene palaeoenvironmental changes in central Tierra del Fuego (~54°S) inferred from pollen analysis

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References (77)

Publisher
Springer Journals
Copyright
Copyright © 2015 by Springer-Verlag Berlin Heidelberg
Subject
Earth Sciences; Paleontology; Biogeosciences; Climate Change; Anthropology; Archaeology
ISSN
0939-6314
eISSN
1617-6278
DOI
10.1007/s00334-015-0537-8
Publisher site
See Article on Publisher Site

Abstract

A pollen record was obtained from a coring site at La Correntina mire (54°33′S, 66°59′W, 206 m a.s.l.) to the east of Lago Fagnano, centre of Tierra del Fuego. The results indicate that the valley bottom was free of ice shortly before 15,400 cal bp. Pioneer vegetation included dwarf shrub heaths, grasses and herbs with sparsely distributed Nothofagus trees, indicative of dry conditions. Nothofagus expanded by 10,000 cal bp and the forest-steppe ecotone was established by 9,400 cal bp, implying warm conditions and an increase in available moisture. After ca. 5,000 cal bp, the development of a closed-canopy forest is interpreted as the result of wetter and colder conditions. After 3,000 cal bp, Nothofagus forest became more open, and by about 400 cal bp there was a further decline of the forest. A closed-canopy Nothofagus forest re-established after 400 cal bp.

Journal

Vegetation History and ArchaeobotanySpringer Journals

Published: Jul 18, 2015

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