Growth of Araucaria angustifolia in the Embrapa/Epagri forest reserve, Caçador, SC, Brazil

Growth of Araucaria angustifolia in the Embrapa/Epagri forest reserve, Caçador, SC, Brazil

Araucaria Forest is one of most threatened phyto-physiognomies in the Atlantic Forest domain,presenting great ecological-economical importance. Nevertheless, there are still lacks of knowledge concerning growth and dynamic of important species, as Araucaria angustifolia. The objective of this work was to recover  the past growth of Araucaria angustifolia, native from Caçador, SC, Brazil, by measuring growth rings and to estimate the average periodic diametric increment. The growth rings were counted and measured, using a stereoscope microscope, in increment cores of 0.5 cm collected from 32 adult trees. The measurements were done with LINTAB measuring table, with 0.01 mm of precision. The samples sizes were irregular, varying from 4.2 to 20.2 cm long. The trees presented average diameter breast height (DBH) of 76.3 cm, varying from 10.7 to 141.3 cm. The periodic diameter increment from the last 10 years was 0.4 cm, varying from 0.11 to 1.15 cm. It was observed differences among trees, but there was a tendency of reduction of growth rhythm in larger trees, being moreevident in trees with more than 110 cm of DBH.

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Main Authors: Mattos, Patricia Póvoa de, Santos, Andreia Taborda dos, Rivera, Hugo, Oliveira, Yeda Maria Malheiros de, Rosot, Maria Augusta Doetzer, Garrastazu, Marilice Cordeiro
Format: Digital revista
Language:por
Published: Embrapa Florestas 2010
Online Access:https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/124
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spelling oai:ojs.pkp.sfu.ca:article-1242017-04-28T14:08:40Z Growth of Araucaria angustifolia in the Embrapa/Epagri forest reserve, Caçador, SC, Brazil Crescimento de Araucaria angustifolia na Reserva Florestal Embrapa/ Epagri, Caçador, SC Mattos, Patricia Póvoa de Santos, Andreia Taborda dos Rivera, Hugo Oliveira, Yeda Maria Malheiros de Rosot, Maria Augusta Doetzer Garrastazu, Marilice Cordeiro Growth rings Araucaria Forest periodic increment. Araucaria Forest is one of most threatened phyto-physiognomies in the Atlantic Forest domain,presenting great ecological-economical importance. Nevertheless, there are still lacks of knowledge concerning growth and dynamic of important species, as Araucaria angustifolia. The objective of this work was to recover  the past growth of Araucaria angustifolia, native from Caçador, SC, Brazil, by measuring growth rings and to estimate the average periodic diametric increment. The growth rings were counted and measured, using a stereoscope microscope, in increment cores of 0.5 cm collected from 32 adult trees. The measurements were done with LINTAB measuring table, with 0.01 mm of precision. The samples sizes were irregular, varying from 4.2 to 20.2 cm long. The trees presented average diameter breast height (DBH) of 76.3 cm, varying from 10.7 to 141.3 cm. The periodic diameter increment from the last 10 years was 0.4 cm, varying from 0.11 to 1.15 cm. It was observed differences among trees, but there was a tendency of reduction of growth rhythm in larger trees, being moreevident in trees with more than 110 cm of DBH. A Floresta Ombrófila Mista (FOM) é uma das fitofisionomias mais ameaçadas da área de domínio da Mata Atlântica, apresentando grande importância ecológico-econômica. Apesar disso, ainda existem lacunas de conhecimento sobre a produtividade primária, o crescimento e a dinâmica de espécies importantes, como a Araucaria angustifolia. O presente trabalho tem por objetivo estudar o crescimento anual de Araucaria angustifolia, nativa do Município de Caçador, SC, pela medição dos anéis de crescimento. A contagem e medição dos anéis de crescimento foram feitas com o auxílio de um microscópio estereoscópico, em baguetas de 0,5 cm de diâmetro, coletadas de 32 árvores adultas. As medições foram feitas com o medidor de anéis de crescimento LINTAB, com precisão de 0,01 mm. O comprimento das amostras é irregular, tendo variado de 4,2 cm a 20,2 cm. As árvores apresentaram diâmetro médio de 76,3 cm, variando de 10,7 cm a 141,3 cm. O incremento diamétrico periódico dos últimos 10 anos foi de 0,40 cm, variando de 0,11 cm a 1,15 cm. Observou-se variação de crescimento entre os diferentes indivíduos, mas houve uma tendência de redução do ritmo de crescimento nas árvores maiores, sendo mais evidente em árvores com mais 110 cm de diâmetro. Embrapa Florestas 2010-06-24 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/124 Pesquisa Florestal Brasileira; No. 55 (2007): jul./dez.; 107 Pesquisa Florestal Brasileira; n. 55 (2007): jul./dez.; 107 1983-2605 1809-3647 por https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/124/84
institution EMBRAPA
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-pfb-br
tag revista
region America del Sur
libraryname Sistema de bibliotecas de EMBRAPA
language por
format Digital
author Mattos, Patricia Póvoa de
Santos, Andreia Taborda dos
Rivera, Hugo
Oliveira, Yeda Maria Malheiros de
Rosot, Maria Augusta Doetzer
Garrastazu, Marilice Cordeiro
spellingShingle Mattos, Patricia Póvoa de
Santos, Andreia Taborda dos
Rivera, Hugo
Oliveira, Yeda Maria Malheiros de
Rosot, Maria Augusta Doetzer
Garrastazu, Marilice Cordeiro
Growth of Araucaria angustifolia in the Embrapa/Epagri forest reserve, Caçador, SC, Brazil
author_facet Mattos, Patricia Póvoa de
Santos, Andreia Taborda dos
Rivera, Hugo
Oliveira, Yeda Maria Malheiros de
Rosot, Maria Augusta Doetzer
Garrastazu, Marilice Cordeiro
author_sort Mattos, Patricia Póvoa de
title Growth of Araucaria angustifolia in the Embrapa/Epagri forest reserve, Caçador, SC, Brazil
title_short Growth of Araucaria angustifolia in the Embrapa/Epagri forest reserve, Caçador, SC, Brazil
title_full Growth of Araucaria angustifolia in the Embrapa/Epagri forest reserve, Caçador, SC, Brazil
title_fullStr Growth of Araucaria angustifolia in the Embrapa/Epagri forest reserve, Caçador, SC, Brazil
title_full_unstemmed Growth of Araucaria angustifolia in the Embrapa/Epagri forest reserve, Caçador, SC, Brazil
title_sort growth of araucaria angustifolia in the embrapa/epagri forest reserve, caçador, sc, brazil
description Araucaria Forest is one of most threatened phyto-physiognomies in the Atlantic Forest domain,presenting great ecological-economical importance. Nevertheless, there are still lacks of knowledge concerning growth and dynamic of important species, as Araucaria angustifolia. The objective of this work was to recover  the past growth of Araucaria angustifolia, native from Caçador, SC, Brazil, by measuring growth rings and to estimate the average periodic diametric increment. The growth rings were counted and measured, using a stereoscope microscope, in increment cores of 0.5 cm collected from 32 adult trees. The measurements were done with LINTAB measuring table, with 0.01 mm of precision. The samples sizes were irregular, varying from 4.2 to 20.2 cm long. The trees presented average diameter breast height (DBH) of 76.3 cm, varying from 10.7 to 141.3 cm. The periodic diameter increment from the last 10 years was 0.4 cm, varying from 0.11 to 1.15 cm. It was observed differences among trees, but there was a tendency of reduction of growth rhythm in larger trees, being moreevident in trees with more than 110 cm of DBH.
publisher Embrapa Florestas
publishDate 2010
url https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/124
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