Climatic signals in growth rings of Cedrela fissilis in different types of South Brazil rainforests

Authors

  • Fernando Andreacci Universidade Federal do Paraná, Setor de Ciências Biológicas, Departamento de Botânica, Programa de Pós Graduação em Botânica.
  • Paulo Cesar Botosso Empresa Brasileira de Pesquisa Agropecuária, Centro Nacional de Pesquisa de Florestas.
  • Franklin Galvão Universidade Federal do Paraná, Setor de Ciências Agrárias, Departamento de Ciências Florestais.

DOI:

https://doi.org/10.5380/rf.v44i2.27316

Keywords:

Anéis de crescimento, dendrocronologia, Floresta Atlântica.

Abstract

Abstract

Cedrela fissilis tree-rings were examined in two distinct phytogeographic units of the State of Paraná, Brazil. The analysis was carried out in areas of tropical rain forest, Atlantic Forest (cost), and Araucaria Forest (plateau) in order to seek for climatic signals in tree rings series. In the coast area, temperatures are high and constant throughout the year, while in the area of the plateau, temperatures are milder and considerable variations occur during the year. In both areas 3-4 radial samples of each selected individual were collected, 15 from the coast and 21 from the plateau. Growth rings were marked, measured, submitted to quality control using the COFECHA® software, and chronologies generated using the ARSTAN® software. Climatic signals in growth rings were identified using Pearson correlations. Tree rings series from plateau revealed better correlations with temperature and rainfall compared to the coast ones; they were accurately dated while the other from coast could not be dated with accuracy. Climatic signals were found in the well-dated chronology. The hypothesis of competition, mainly by light, is raised to explain the difficulty to establish a good chronology for coast area.

Keywords: Growth rings; dendrochronology; Atlantic Forest.

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Published

2013-12-02

How to Cite

Andreacci, F., Botosso, P. C., & Galvão, F. (2013). Climatic signals in growth rings of Cedrela fissilis in different types of South Brazil rainforests. Floresta, 44(2), 323–332. https://doi.org/10.5380/rf.v44i2.27316

Issue

Vol. 44 No. 2 (2014)

Section

Artigos

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