Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/28387
Title: Testing multivariate analysis in paleoenvironmental reconstructions using pollen records from Lagoa Salgada, NE Rio de Janeiro State, Brazil
Authors: Toledo, Mauro B. de
Barth, Ortrud Monika
Silva, Cleverson G.
Barros, Marcia A.
Affilliation: Universidade Federal Fluminense. Instituto de Geociências. Departamento de Geologia. Niterói, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ. Brasil / Universidade Federal do Rio de Janeiro. Instituto de Geociências. Departamento de Geologia. Laboratório de Palinologia. Rio de Janeiro, RJ, Brasil
Universidade Federal Fluminense. Instituto de Geociências. Departamento de Geologia. Niterói, RJ, Brasil.
Universidade Federal do Rio de Janeiro. Instituto de Geociências. Departamento de Geologia. Laboratório de Palinologia. Rio de Janeiro, RJ, Brasil
Abstract: Despite the indisputable significance of identification of modern analogs for Paleoecology research, relatively few studies attempted to integrate modern and fossil samples on paleoenvironmental reconstructions. In Palynology, this general pattern is not different from other fields of Paleoecology. This study demonstrates the practical application of modern pollen deposition data on paleoenvironmental reconstructions based on fossil pollen by using multivariate analysis. The main goal of this study was to use Detrended Correspondence Analysis (DCA) to compare pollen samples from two sediment cores collected at Lagoa Salgada, a coastal lagoon located at northeastern Rio de Janeiro State. Furthermore, modern surface samples were also statistically compared with samples from both cores, providing new paleoecological insights. DCA demonstrated that samples from both cores are more similar than previously expected, and that a strong pattern, related to a paleoenvironmental event, is present within the fossil data, clearly identifying in the scatter plot samples that represent pre- and post-environmental change. Additionally, it became apparent that modern vegetation and environmental conditions were established in this region 2500 years before present (BP). Multivariate Analysis allowed a more reliable integration of modern and fossil pollen data, proving to be a powerful tool in Paleoecology studies that should be employed more often on paleoclimate and paleoenvironmental reconstructions.
Keywords: multivariate analysis
paleoenvironmental reconstruction
Quaternary palynology
Lagoa Salgada
Rio de Janeiro
Brazil
keywords: análise multivariada
reconstrução paleoambiental
Palinologia Quaternária
Lagoa Salgada
Rio de Janeiro
Issue Date: 2009
Publisher: Academia Brasileira de Ciências
Citation: TOLEDO, Mauro B. de; et al. Testing multivariate analysis in paleoenvironmental reconstructions using pollen records from Lagoa Salgada, NE Rio de Janeiro State, Brazil. Anais da Academia Brasileira de Ciências, v.81, n.4, p.757-768, 2009.
ISSN: 0001-3765
Copyright: open access
Appears in Collections:IOC - Artigos de Periódicos

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