Análisis y métodos paleoecológicos para la reconstrucción de comunidades de bosque y estepas de Patagonia, Argentina

MANCINI, M.V. ; BAMONTE, F.P; MARCOS, M.A; G. D. SOTTILE; ECHEVERRIA, M.E.

Publicación Electrónica Asociación Paleontológica Argentina

Asociación Paleontológica Argentina

Año: 2018 vol. 18 p. 77 - 101

In this paper we discuss the different methodological aspects to be taken into account in paleoecological studies. The theoretical-methodological considerations discussed includethe following aspects: deposit types, taphonomic processes, pollen representation from modern sediment samples and vegetation records, pollen sum representative of the plant community composition, differential productivity and dispersion of taxa and their spatial representation, taxonomic precision and comparison with vegetation in each area, and multiproxy analysis. The investigations carried out by the authors in different areas and deposits of Patagonia, based mainly on palynological analysis, were applied to exemplify and synthesize these different aspects and their importance in the environmental reconstruction of the past. The data set integration from multi-site allowed us to overcome limitations contained in a single site data set, such as discontinuities, biases, or taxaoverrepresentations. This integration also allowed us to test climate change hypotheses at a regional scale based on vegetation changes.