Análisis de la lluvia de polen moderna de la cuenca de México: Una herramienta para la interpretación del registro fósil

Translated title of the contribution: Analyses of modern pollen rain in the Mexico Basin: A tool for the interpretation of the fossil record

Socorro Lozano-García, Alexander Correa-Metrio, Laura Luna

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The representation of pollen and spores in the fossil record of late Quaternary sedimentary sequences depends on several factors, including the production and dispersion of pollen grains. Thus, the analysis of modern pollen rain contributes to the understanding of these factors and to the knowledge of how vegetation is represented in the fossil pollen spectra. Modern pollen rain from eight vegetation types along an altitudinal gradient from 2300 to 4329 masl in the basin of Mexico are analyzed by using different statistical methods. Pollen spectra from high elevation plant communities > 3800 masl were divided from low altitudes by applying cluster analysis. Based on pollen composition, this study uses DCA to distribute the plant communities in an altitudinal gradient, and probability density functions (PDF) are used to describe the distribution of pollen along the altitudinal gradient. Pollen taxa with low percentages characterize the low altitude sites, with PDFs similar to the parental taxa. Pinus, Poaceae and Asteraceae show wide altitudinal ranges and their PDFs reflect a pattern comparable to the parental taxa, while Quercus, Alnus, Salvia and Salix with narrow altitudinal ranges have PDFs that indicate pollen transport to higher altitude sites. The presence of Mimosa, which present a well defined PDF, can be used as an indicator of paleoenvironmental conditions in the fossil pollen sequences in the basin of Mexico.

Translated title of the contributionAnalyses of modern pollen rain in the Mexico Basin: A tool for the interpretation of the fossil record
Original languageSpanish
Pages (from-to)1-10
Number of pages10
JournalBoletin de la Sociedad Geologica Mexicana
Volume66
Issue number1
DOIs
StatePublished - 2014

Bibliographical note

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

  • Cluster analysis
  • Ordination
  • Pollen
  • Probability density functions
  • Quaternary

Continental Scientific Drilling Facility tags

  • CHALCO

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