2005
DOI: 10.1016/j.yqres.2005.02.010
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23,000 yr of vegetation history of the Upper Lerma, a tropical high-altitude basin in Central Mexico

Abstract: Pollen analysis on a 9.54-m sediment core from lake Chignahuapan in the upper Lerma basin, the highest intermontane basin in Central Mexico (2570 m asl), documents vegetation and limnological changes over the past ∽23,000 14C yr. The core was drilled near the archaeological site of Santa Cruz Atizapán, a site with a long history of human occupation, abandoned at the end of the Epiclassic period (ca. 900 AD). Six radiocarbon AMS dates and two well-dated volcanic events, the Upper Toluca Pumice with an age of 11… Show more

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Cited by 76 publications
(36 citation statements)
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“…Afterward, it seems that some species could have undertaken phases of isolation and recontact along mountain corridors (e.g. JaramilloCorrea et al 2008;Gugger et al 2011) as a consequence of altitudinal changes in their distribution during the Pleistocene's glacial cycles (Lozano-García et al 2005;Ortega-Rosas et al 2008). It is possible that J. blancoi was similarly affected by events in the past, with population fragmentation and isolation as one of the consequences.…”
Section: Genetic Exchangeabilitymentioning
confidence: 99%
“…Afterward, it seems that some species could have undertaken phases of isolation and recontact along mountain corridors (e.g. JaramilloCorrea et al 2008;Gugger et al 2011) as a consequence of altitudinal changes in their distribution during the Pleistocene's glacial cycles (Lozano-García et al 2005;Ortega-Rosas et al 2008). It is possible that J. blancoi was similarly affected by events in the past, with population fragmentation and isolation as one of the consequences.…”
Section: Genetic Exchangeabilitymentioning
confidence: 99%
“…Después de estos estudios, el NT permaneció casi sin ser estudiado hasta la década de los noventa, cuando se iniciaron una serie de estudios encaminados a descifrar su ambiente estructural , su geología e historia eruptiva (Macías et al, 1997a;García-Palomo et al, 2002), los depósitos producidos por erupciones de tipo pliniano Arce et al, 2005b;Capra et al, 2006), los colapsos del edificio volcánico (Capra y Macías 2000), los aspectos geomorfológicos del volcán (Norini et al, 2004), los paleosuelos preservados entre los depósitos piroclásticos y su significado paleoambiental (Sedov et al, 2001;Sedov et al, 2003;Solleiro-Rebolledo et al, 2004) y estudios paleoambientales realizados en la cuenca del Alto Lerma (Metcalfe et al, 1991;Newton y Metcalfe, 1999;Caballero et al, 2001;Caballero et al, 2002;Lozano-García et al, 2005).…”
Section: Estudios Previosunclassified
“…Sin embargo, con frecuencia las secuencias sedimentarias se encuentran alteradas o incompletas debido a que se trata de una región tectónica y volcánicamente activa, con una historia de ocupación humana de varios miles de años (p.e. Metcalfe, 1995;Caballero y Ortega, 1998;Lozano et al, 2005). Algunos registros lacustres provienen de lagos someros (< 5 m de profundidad), en los cuales, durante los episodios de bajos niveles lacustres, los procesos erosivos originan hiatos en los sedimentos con intervalos temporales desconocidos (p.e.…”
Section: Introductionunclassified