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Paleoenvironmental Changes in the Semiarid Coast of Chile (∼32°S) during the Last 6200 cal Years Inferred from a Swamp–Forest Pollen Record

Published online by Cambridge University Press:  20 January 2017

Antonio Maldonado  and
Carolina Villagrán
Antonio Maldonado*
Affiliation:
Laboratorio de Palinología, Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile E-mail: amaldona@icaro.dic.uchile.cl
Carolina Villagrán
Affiliation:
Laboratorio de Palinología, Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile
*
1To whom correspondence should be addressed.
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Abstract

Pollen analysis of two sediment records from a coastal swamp forest site in the Chilean semiarid region (31°50′S; 71°28′W) shows an alternation of dry and wet phases during the past ∼6100 cal yr B.P. The most prominent vegetation changes occur at ∼4200 cal yr B.P., with the expansion of the swamp forest taxa Luma chequen and Escallonia sp., followed by a regression of the forest beginning at ∼3200 cal yr B.P. and ending with its replacement by a xerophytic scrub, between ∼1800 and 1300 cal yr B.P. The swamp forest reexpanded after ∼1300 cal yr B.P. and persisted, with minor variation, until the present. We interpret the establishment of the swamp forest at the study site to be the result of a rising watertable in response to increased rainfalls from ∼4200 cal yr B.P. onward. Our results indicate that in north-central Chile the second half of the Holocene was climatically more variable than previously thought, suggesting significant changes in the position and/or intensity of the westerlies wind belt and possibly in the frequency of El Niño–Southern Oscillation events.

Keywords

ChileHoloceneenvironmental changepollenpaleoclimate
Type
Research Article
Information
Quaternary Research , Volume 58 , Issue 2 , September 2002 , pp. 130 - 138
Copyright
University of Washington

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References

Aceituno, P. On the functioning of the Southern Oscillation in the South American sector. Part I. Surface climate. Monthly Weather Review 116, (1988). 505 523.Google Scholar
Caviedes, C. Geomorfologı́a de Cuaternario del valle de Aconcagua, Chile Central. (1972). Universitat Freiburg I, p. 153 Google Scholar
Faegri, K., and Iversen, J. Textbook of Pollen Analysis. (1989). Blackwell Sci, Oxford.Google Scholar
Falabella, F., Planella, M.T., and Pollastri, A. Análisis de oxigeno 18 en material malacolólogico de Chile central. Actas del XI Congreso Nacional de Arqueologı́a Chilena. Stgo de Chile (1991). 105 121.Google Scholar
Fuenzalida, P. Biogeografı́a. Geografı́a Económica de Chile. (1965). Editorial Universitaria S.A, Santiago.Google Scholar
Grimm, E. CONISS: A fortran 77 program for stratigraphically constrained cluster analisys by the method of incremental sum of squares. Computers and Geociences V, (1987). 13 35.Google Scholar
Grosjean, M., Valero-Garcés, B.L., Geyh, M.A., Messerli, B., Schotterer, U., Schreier, H., and Kelts, K. Mid- and late-Holocene limnogeology of Laguna del Negro Francisco, northern Chile, and its palaeoclimatic implications. The Holocene 7, (1997). 151 159.Google Scholar
Grosjean, M., Geyh, M.A., Messerli, B., Schreier, H., and Veit, H. A late-Holocene (<2600 B.P.) glacial advance in the south-central Andes (29°S), northern Chile. The Holocene 8, (1998). 473 479.Google Scholar
Heusser, C. Quaternary pollen record from Laguna de Tagua Tagua, Chile. Science 219, (1983). 1429 1431.Google Scholar
Jackson, D. Coexistencia e interacción de comunidades cazadores-recolectores del arcaico temprano en el semiárido de Chile. Valles. Revista de estudios regionales, Museo de la Ligua-Chile 3, (1997). 13 36.Google Scholar
Jackson, D., and Ampuero, G. Comentario a una datación radiocarbónica para el Arcaico medio del Norte Chico. Boletı&#x0301;n Sociedad Chilena de Arqueologı&#x0301;a 15, (1992). 11 13.Google Scholar
Jackson, D., and Rodrı&#x0301;guez, A. Ocupación del Complejo El Molle en la costa de Los Vilos, provincia del Choapa. Boletı&#x0301;n Sociedad Chilena de Arqueologı&#x0301;a 26, (1998). 19 21.Google Scholar
Jackson, D., Baez, P., Seguel, R., and Arata, J. Campamento arcaico para la explotación del intermareal: Significado del desconche local de moluscos. Valles. Revista de estudios regionales, Museo de la Ligua-Chile 2, (1996). 89 109.Google Scholar
Jenny, B, Valero-Garces, B, Villa-Martı&#x0301;nez, R, Urrutia, R, Geyth, M, and Veit, H. (in press), Early to mid-Holocene aridity in Central Chile (34°S) related to the Southern Westerlies: The Laguna Aculeo record, Quaternary Research.Google Scholar
Maldonado, A. Historia de los bosques pantanosos de la costa de Los Vilos (IV Región, Chile) durante el Holoceno medio y tardı&#x0301;o. (1999). Universidad de ChileFacultad de Ciencias, Google Scholar
Marchant, M., Hebbeln, D., and Wefer, G. High resolution planktic foraminiferal record of the last 13,300 years from the upwelling area off Chile. Marine Geology 161, (1999). 115 128.Google Scholar
Marticorena, C., and Quezada, M. Catálogo de la flora vascular de Chile. Gayana (Botánica) (Chile) 42, (1985). 5 155.Google Scholar
Nuñez, L., Grosjean, M., Messerli, B., and Schrelier, H. Cambios ambientales holocénicos en la puna de Atacama y sus implicancias paleoclimáticas. Estudios Atacameños 12, (1995–96). 31 40.Google Scholar
Nuñez, L., Varela, J., Casamiquela, R., and Villagrán, C. Reconstrucción Multidiciplinaria de la Ocupación Prehistórica de Quereo, Centro de Chile. Latin American Antiquity 5, (1994). 99 118.Google Scholar
Ota, Y., and Paskoff, R. Holocene deposits on the coast of north-central Chile: Radiocarbon ages and implications for coastal changes. Revista Geológica de Chile 20, (1993). 25 32.Google Scholar
Rodbell, D.T., Seltzer, G.O., Anderson, D.M., Abbott, M.B., Enfield, D.B., and Newman, J.H. An ∼15,000-year record of El Niño-driven alluviation in southwestern Ecuador. Science 283, (1999). 516 520.Google Scholar
Sandweiss, D.H., Richardson, J.B. III, Reitz, E.J., Rollins, H.B., and Maasch, K.A. Geoarchaeological evidence from Peru for a 5000 years B.P. onset of El Niño. Science 273, (1996). 1531 1533.Google Scholar
Sandweiss, D.H., Maasch, K.A., Burger, R.L., Richardson, J.B. III, Rollins, H.B., and Clement, A. Variation in Holocene El Niño frequencies: Climate records and cultural consequences in ancient Peru. Geology 29, (2001). 603 606.2.0.CO;2>CrossRefGoogle Scholar
Stockmarr, J. Tablets with spores used in absolute pollen analysis. Pollen et Spores 13, (1971). 615 621.Google Scholar
VanHusen, C. Klimagliederung in Chile auf der Basis von Häufigkeitsverteilungen der Niederschlagssummen. (1967). Universitat Freiburg I, p. 113 Google Scholar
Varela, J. Geologı&#x0301;a del Cuaternario del Area de Los Vilos-Ensenada El Negro (IV Región) y su Relación con la Existencia del Bosque “Relicto” de Quebrada Quereo. Comunicaciones 33, (1981). 17 30.Google Scholar
Veit, H. Sourthern Westerlies during the Holocene deduced from geomorphological and pedological studies in the Norte Chico, Northern Chile (27–33°S). Palaeogeography, Palaeoclimatology, Palaeoecology 123, (1996). 107 119.Google Scholar
Villagrán, C. Estructura floristica e historia del bosque pantanoso de Quintero (Chile, V Región) y su relación con las comunidades relictuales de Chile Central y Norte Chico. Actas del III Congreso Geológico Chileno (1982). 377 402.Google Scholar
Villagrán, C., and Varela, J. Palynological evidence for increased aridity on the central Chilean coast during the Holocene. Quaternary Research 34, (1990). 198 207.Google Scholar
Villa-Martı&#x0301;nez, R., and Villagrán, C. Historia de la vegetación de bosques pantanosos de la costa de Chile central durante el Holoceno medio y tardı&#x0301;o. Revista Chilena de Historia Natural 70, (1997). 391 401.Google Scholar