Dendrochronology of species from Brazilian Araucaria Forest, Candoi, PR
In the present work the dendrochronological potential of six species of the Araucaria Forest is analyzed. The trunks of 20 trees were collected in Candoi, State of Parana, Brazil, from an area that belongs toELEJOR, Centrais Elétricas do Rio Jordão, for the following species: Araucaria angustifolia, Clethra scabra, Cedrela lilloi, Ocotea porosa, Podocarpus lambertii and Sebastiania commersoniana (3 to 6, from each species). The trunks were sawed, and at breast height a sample was taken from the center of the board, from bark to bark, crossing the pith, for macroscopic analysis. These samples were dried and polished, making possible the recognition and measurement of growth rings The historical climatic data series were provided by SIMEPAR, the State weather institute. The trees presented diameter at breast height (DBH), varying from 14 cm to 40 cm, with age of 60 years, annual diameter increment of 0.6 cm, in average. Although the number of trees was small, it was possible to observe that the site was not limiting for the species, as the growth rings showed very low sensitivity.However, the very extreme growth condition of 1999 and 2000, when occurred a very low precipitation period followed by a very severe winter, was registered in the growth ring series of most of the disks analyzed
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Embrapa Florestas
2010
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oai:ojs.pkp.sfu.ca:article-1412017-04-28T14:09:00Z Dendrochronology of species from Brazilian Araucaria Forest, Candoi, PR Dendrocronologia de espécies da Floresta Ombrófila Mista do Município de Candói, PR Mattos, Patricia Póvoa de Santos, Andreia Taborda dos Oliveira, Yeda Maria Malheiros de Rosot, Maria Augusta Doetzer Anéis de crescimento precipitação pluviométrica temperatura dinâmica de florestas Mata Atlântica Growth rings precipitation temperature forest dynamics Atlantic Rain Forest In the present work the dendrochronological potential of six species of the Araucaria Forest is analyzed. The trunks of 20 trees were collected in Candoi, State of Parana, Brazil, from an area that belongs toELEJOR, Centrais Elétricas do Rio Jordão, for the following species: Araucaria angustifolia, Clethra scabra, Cedrela lilloi, Ocotea porosa, Podocarpus lambertii and Sebastiania commersoniana (3 to 6, from each species). The trunks were sawed, and at breast height a sample was taken from the center of the board, from bark to bark, crossing the pith, for macroscopic analysis. These samples were dried and polished, making possible the recognition and measurement of growth rings The historical climatic data series were provided by SIMEPAR, the State weather institute. The trees presented diameter at breast height (DBH), varying from 14 cm to 40 cm, with age of 60 years, annual diameter increment of 0.6 cm, in average. Although the number of trees was small, it was possible to observe that the site was not limiting for the species, as the growth rings showed very low sensitivity.However, the very extreme growth condition of 1999 and 2000, when occurred a very low precipitation period followed by a very severe winter, was registered in the growth ring series of most of the disks analyzed Foi analisado o potencial dendrocronológico de seis espécies da Floresta Ombrófila Mista (FOM).Foram coletados troncos em Candói, PR, em uma área pertencente a ELEJOR, Centrais Elétricas do Rio Jordão,sendo três a seis indivíduos das espécies: Araucaria angustifolia, Clethra scabra, Cedrela lilloi, Ocoteaporosa, Podocarpus lambertii e Sebastiania commersoniana. Os troncos foram serrados, sendo retiradas amostras à altura do peito, da prancha central, de casca a casca, cruzando a medula, para análise macroscópica. Essas amostras foram secas e lixadas, possibilitando o reconhecimento e medição dos anéis de crescimento. A série climática utilizada foi disponibilizada pelo Instituto Tecnológico SIMEPAR. As árvores apresentavam diâmetro à altura do peito (DAP) variando de 14 cm a 40 cm e, em média, 60 anos e incremento anual médio de 0,6 cm. Apesar do número de árvores ser pequeno, foi possível observar que as condições do ambiente não foram limitantes para as espécies, pois os anéis de crescimento se mostram pouco sensíveis. Entretanto, as condições climáticas extremas dos anos de 1999 e 2000, quando ocorreu período de precipitação extremamente baixa, seguido por inverno muito rigoroso, foi registrado nos anéis de crescimento em muitos discos analisados nesse trabalho. Embrapa Florestas 2010-06-28 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed works Trabalhos avaliados pelos pares application/pdf https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/141 Pesquisa Florestal Brasileira; No. 54 (2007): jan./jun. Pesquisa Florestal Brasileira; 153 Pesquisa Florestal Brasileira; n. 54 (2007): jan./jun. Pesquisa Florestal Brasileira; 153 1983-2605 1809-3647 por https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/141/101 |
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Mattos, Patricia Póvoa de Santos, Andreia Taborda dos Oliveira, Yeda Maria Malheiros de Rosot, Maria Augusta Doetzer |
spellingShingle |
Mattos, Patricia Póvoa de Santos, Andreia Taborda dos Oliveira, Yeda Maria Malheiros de Rosot, Maria Augusta Doetzer Dendrochronology of species from Brazilian Araucaria Forest, Candoi, PR |
author_facet |
Mattos, Patricia Póvoa de Santos, Andreia Taborda dos Oliveira, Yeda Maria Malheiros de Rosot, Maria Augusta Doetzer |
author_sort |
Mattos, Patricia Póvoa de |
title |
Dendrochronology of species from Brazilian Araucaria Forest, Candoi, PR |
title_short |
Dendrochronology of species from Brazilian Araucaria Forest, Candoi, PR |
title_full |
Dendrochronology of species from Brazilian Araucaria Forest, Candoi, PR |
title_fullStr |
Dendrochronology of species from Brazilian Araucaria Forest, Candoi, PR |
title_full_unstemmed |
Dendrochronology of species from Brazilian Araucaria Forest, Candoi, PR |
title_sort |
dendrochronology of species from brazilian araucaria forest, candoi, pr |
description |
In the present work the dendrochronological potential of six species of the Araucaria Forest is analyzed. The trunks of 20 trees were collected in Candoi, State of Parana, Brazil, from an area that belongs toELEJOR, Centrais Elétricas do Rio Jordão, for the following species: Araucaria angustifolia, Clethra scabra, Cedrela lilloi, Ocotea porosa, Podocarpus lambertii and Sebastiania commersoniana (3 to 6, from each species). The trunks were sawed, and at breast height a sample was taken from the center of the board, from bark to bark, crossing the pith, for macroscopic analysis. These samples were dried and polished, making possible the recognition and measurement of growth rings The historical climatic data series were provided by SIMEPAR, the State weather institute. The trees presented diameter at breast height (DBH), varying from 14 cm to 40 cm, with age of 60 years, annual diameter increment of 0.6 cm, in average. Although the number of trees was small, it was possible to observe that the site was not limiting for the species, as the growth rings showed very low sensitivity.However, the very extreme growth condition of 1999 and 2000, when occurred a very low precipitation period followed by a very severe winter, was registered in the growth ring series of most of the disks analyzed |
publisher |
Embrapa Florestas |
publishDate |
2010 |
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https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/141 |
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