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Interannual Variability in Pollen Dispersal and Deposition on the Tropical Quelccaya Ice Cap

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Abstract:

Pollen collected from snow samples on the Quelccaya Ice Cap in 2000 and 2001 reveals significant interannual variability in pollen assemblage, concentration, and provenance. Samples from 2000, a La Niña year, contain high pollen concentrations and resemble samples from the Andean forests (Yungas) to the east. Samples from 2001, an El Niño year, contain fewer pollen and resemble those from the Altiplano. We suggest that varying wind patterns under different El Niño/Southern Oscillation (ENSO) conditions may affect the processes of pollen transport over the Altiplano and on the ice cap, although confounding variables such as flowering phenology and sublimation should also be considered

Keywords: Peru; Quelccaya ice cap; biogeography; ice-core palynology; pollen dispersal

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.0033-0124.2005.00471.x

Affiliations: 1: University of Southern Mississippi 2: Louisiana State University

Publication date: May 1, 2005

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