NARA Discovery
Article Details
← Back to Search Results
Journal Article

A pollen–climate calibration from western Patagonia for palaeoclimatic reconstructions

Vincent Montade; Odile Peyron; Charly Favier; Jean Pierre Francois; Simon G. Haberle
Journal of Quaternary Science · Vol. 34, Issue 1 · pp. 76-86 · 2019

Abstract

Palaeoecological studies of sediment records from the western margins of southern South America have revealed vegetation dynamics to be under the influence of major regional climate drivers such as the Southern Westerly Winds, Southern Annular Mode and El Niño Southern Oscillation. Despite the substantial number of palynological records in this region, very few quantitative pollen‐based climate reconstructions using surface samples have been made. In this context, our objective was first to investigate the modern pollen–vegetation–climate relationships in the western Patagonian. The results show that the modern pollen dataset reflects the main vegetation types and that summer precipitation and winter temperature represent the main climate parameters controlling vegetation distribution. Secondly using this pollen–climate dataset we evaluate and compare the performance of two models (Weighted Averaging Partial Least Squares and Modern Analog Technique). We used these models to make climate reconstructions from two oceanic pollen records from western Patagonia. Compared with independent climate indicators, our pollen‐inferred climate reconstructions reveal the same overall trends, showing the potential of pollen–climate transfer functions applied to this region. This study provides much needed data for quantitative climate reconstructions in South America, but which also needs to be improved by enlarging the modern pollen dataset.

Bibliographic Information

JournalJournal of Quaternary Science
PublisherWiley
Publication Date2019-01-01
Publication Year2019
Volume34
Issue1
Pages76-86
Document TypeJournal Article
Print ISSN0267-8179
eISSN1099-1417
DOI10.1002/jqs.3082
SubjectEarth & Environmental Science

Access Information

NARA Access Coverage1996-01-01~Current
Journal Homepagehttps://onlinelibrary.wiley.com/loi/10991417
Publisher PageOpen Publisher Page
Full-text access depends on NARA's subscribed coverage and institutional access.