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Climate, Fire, and Vegetation between about 13,000 and 9200 14C yr B.P. in the Chilean Lake District

  • Patricio I. Moreno (a1)
Abstract

A pollen record from Lago Condorito (41°45′S, 73°07′W) shows that North Patagonian Rain Forest taxa predominated between about 13,000 and 12,200 14C yr B.P. in the lowlands of southern Chile, near the city of Puerto Montt. This was followed by the expansion and persistence of the conifer Podocarpus nubigena between 12,200 and 9900 14C yr B.P. Trees favored by disturbance expanded between 11,200 and 9900 14C yr B.P., concurrent with sharp and sustained increases of microscopic charcoal particles. Taxa of low-elevation rain forests expanded and became more diverse in pulses centered at 9900 and 9000 14C yr B.P., following the disappearance of P. nubigena. These data suggest conditions approaching modern climate between about 13,000 and 12,200 14C yr B.P. The climate cooled between 12,200 and 9900 14C yr B.P., then quickly warmed to interglacial conditions. Stand-replacing fires occurred near Lago Condorito between 11,200 and 9900 14C yr B.P., under cool-temperate, humid conditions. The proximity and reported antiquity of the Monte Verde archeological site raise the possibility that these fires were set by human activities.

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Aceituno, P., Fuenzalida, H., Rosenbluth, B.. Climate along the extratropical west coast of South America. Mooney, H.A., Fuentes, E.R., Kromberg, B. (1993). Earth Systems Responses to Global Change. Academic Press, San Diego.6170.,
Armesto, J.J., Villagrán, C., Donoso, C. (1994). Desde la era glacial a la industrial: La historia del bosque templado chileno. Ciencia y ambiente,10, 6672.,
Denton, G.H., Lowell, T.V., Moreno, P.I., Andersen, B.G., Schlüchter, C. (1999). Geomorphology, stratigraphy, and radiocarbon chronology of Llanquihue Drift in the area of the southern Lake District, Seno Reloncavı́, and Isla Grande de Chiloé, Chile. Geografiska Annaler,81A, 167229.,
Dillehay, T. (1989). Monte Verde. A Late Pleistocene Settlement in Chile. Palaeoenvironment and Site Context. Smithsonian Institution Press, Washington.
Dillehay, T. (1997). Monte Verde. A Late Pleistocene Settlement in Chile. The Archaeological Context and Interpretation. Smithsonian Institution Press, Washington.
Heusser, C.J. (1966). Late-Pleistocene pollen diagrams from the Province of Llanquihue, southern Chile. Proceedings of the American Philosophical Society,110, 269305.,
Heusser, C.J. (1981). Palynology of the last interglacial–glacial cycle in midlatitudes of southern Chile. Quaternary Research,16, 293321.,
Heusser, C.J. (1993). Late Glacial of southern South America. Quaternary Science Reviews,12, 345350.,
Heusser, C.J. (1994). Paleoindians and fire during the late Quaternary in southern South America. Revista Chilena de Historia Natural,67, 435442.,
Heusser, C.J., Denton, G.H., Hauser, A., Andersen, B.G., Lowell, T.V. (1995). Quaternary pollen records from the Archipiélago de Chiloé in the context of glaciation and climate. Revista Geológica de Chile,22, 2546.,
Heusser, C.J., Lowell, T.V., Heusser, L.E., Hauser, A., Andersen, B.G., Denton, G.H. (1996). Full-glacial–late-glacial paleoclimate of the Southern Andes: Evidence from pollen, beetle, and glacial records. Journal of Quaternary Science,11, 173184.,
Hoganson, J.W., Ashworth, A.C. (1992). Fossil beetle evidence for climatic change 18,000–10,000 years B.P. in south-central Chile. Quaternary Research,37, 101116.,
Kitzberger, T., Veblen, T., Villalba, R. (1997). Climatic influences on fire regimes along a rain forest-to-xeric woodland gradient in northern Patagonia, Argentina. Journal of Biogeography,24, 3547.,
Lusk, C. (1996). Gradient analysis and disturbance history of temperate rain forests of the coastal range summit plateau, Valdivia, Chile. Revista Chilena de Historia Natural,69, 401411.,
Lusk, C.H. (1999). Long-lived light-demanding emergents in southern temperate forests: The case of Weinmannia trichosperma (Cunoniaceae) in southern Chile. Plant Ecology,140, 111115.,
Markgraf, V. (1991). Younger Dryas in South America?. Boreas,20, 6369.,
Markgraf, V., Anderson, L. (1994). Fire history in Patagonia: Climate versus human cause. Revista Instituto Geociencias,15, 3547.,
Miller, J.. The climate of Chile. Schwerdtfeger, W. (1976). Climates of Central and South America.. Elsevier, Amsterdam.113145.,
Moreno, P.I. (1997). Vegetation and climate change near Lago Llanquihue in the Chilean Lake District between 20,200 and 9500 14C yr B.P. Journal of Quaternary Science,12, 485500.,
Moreno, P.I., Jacobson, G.L., Andersen, B.G., Lowell, T.V., Denton, G.H. (1999). Vegetation and climate changes during the last glacial maximum and the last termination in the Chilean Lake District: A case study from Canal de la Puntilla (41°S). Geografiska Annaler,81A, 285311.,
Oberdorfer, E. (1960). Pflanzensoziologische Studien in Chile. Cramer, Weinheim.p. 208
Ramı́rez, C. (1989). Regional vegetation. Monte Verde, A Late Pleistocene Settlement in Chile. Smithsonian Institution Press, Washington.
Schmithüsen, J. (1956). Die raumliche Ordnung der chilenischen Vegetation. Forschnugen in Chile.
Veblen, T.T., Ashton, D.H. (1978). Catastrophic influences on the vegetation of the Valdivian Andes. Vegetatio,36, 149167.,
Villagrán, C. (1980). Vegetatiosgeschichtliche und pflanzensoziologische Untersuchungen im Vicente Perez Rosales Nationalpark (Chile). Dissertationes Botanicae,54, 1165.,
Villagrán, C. (1991). Desarrollo de Tundras Magallánicas durante la transición glacial–postglacial en la Cordillera de la Costa, Chiloé: Evidencias de un evento equivalente al younger Dryas?. Bamberger Geographische Schriften Bd,11, 245256.,
Villagrán, C. (1993). Excursion guide. International Workshop: The Quaternary of Chile.. Santiago, Chile.
Villalba, R., Veblen, T.T. (1997). Regional patterns of tree population age structures in northern Patagonia: Climatic and disturbance influences. Journal of Ecology,85, 113124.,
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Quaternary Research
  • ISSN: 0033-5894
  • EISSN: 1096-0287
  • URL: /core/journals/quaternary-research
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