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Data de Publicação: | 2008 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Biotemas (Online) |
Texto Completo: | https://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2008v21n3p15 |
Resumo: | Fire resistance in a population of Cyathea atrovirens (Langsd. & Fisch.) Domin (Cyatheaceae) in the state of Rio Grande do Sul, Brazil. Cyathea atrovirens (Langsd. & Fisch.) Domin is a tree fern that occurs inthe state of Rio Grande do Sul from sea level to an altitude of 300m. We monitored a population of 10 individualsof C. atrovirens affected by burning in the municipality of Campo Bom, Rio Grande do Sul, Brazil. The objective of this study was to analyze the responses of a Cyathea atrovirens population after the occurrence of a fi re, considering the following aspects: frond production, annual rates of relative growth of caudex length, and the production, maturation and release of spores. The sporophytes of larger size produced more fronds than the smaller ones. We observed a signifi cant relationship between caudex length and relative growth (TCR) in individuals of smaller size. In the fi rst year, after the fi re, all individuals produced new fronds. The spore productionwas asynchronic. The species apparently demonstrated its capacity to support the occurrence of quick fi res, since the post-fi re frond production was gradually reestablished. |
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.Resistência ao fogo em uma população de Cyathea atrovirens (Langsd. & Fisch.) Domin (Cyatheaceae) no Estado do Rio Grande do Sul, BrasilFire resistance in a population of Cyathea atrovirens (Langsd. & Fisch.) Domin (Cyatheaceae) in the state of Rio Grande do Sul, Brazil. Cyathea atrovirens (Langsd. & Fisch.) Domin is a tree fern that occurs inthe state of Rio Grande do Sul from sea level to an altitude of 300m. We monitored a population of 10 individualsof C. atrovirens affected by burning in the municipality of Campo Bom, Rio Grande do Sul, Brazil. The objective of this study was to analyze the responses of a Cyathea atrovirens population after the occurrence of a fi re, considering the following aspects: frond production, annual rates of relative growth of caudex length, and the production, maturation and release of spores. The sporophytes of larger size produced more fronds than the smaller ones. We observed a signifi cant relationship between caudex length and relative growth (TCR) in individuals of smaller size. In the fi rst year, after the fi re, all individuals produced new fronds. The spore productionwas asynchronic. The species apparently demonstrated its capacity to support the occurrence of quick fi res, since the post-fi re frond production was gradually reestablished.Cyathea atrovirens (Langsd. & Fisch.) Domin é uma samambaia arborescente que no Estado do Rio Grande do Sul ocorre desde o nível do mar até áreas com aproximadamente 300m de altitude. Monitoramos uma população de C. atrovirens formada por 10 indivíduos, atingida por uma queimada, no município de Campo Bom, Rio Grande do Sul, Brasil. A população estudada situa-se em local desprovido de vegetação, em um barranco úmido à beira do km 11 da rodovia RS-239. Os objetivos do estudo foram analisar as respostas da população após a passagem do fogo, em relação aos seguintes aspectos: produção de novas frondes (vegetativas e férteis); taxa anual de crescimento relativo do comprimento do cáudice, bem como a produção, maturação e liberação dos esporos. Quanto maior o esporófito, maior tende a ser a produção de frondes. Observamos uma relação signifi cativa entre comprimento dos cáudices e taxa de crescimento relativo (TCR). Ao longo do primeiro ano após a queimada, todos os indivíduos observados formaram frondes férteis, de modo assincrônico. A espécie mostrou-se capaz de suportar a passagem rápida de fogo, uma vez que o restabelecimento na produção de frondes (vegetativas e férteis) ocorreu gradualmente após a queimada.Universidade Federal de Santa Catarina2008-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2008v21n3p1510.5007/2175-7925.2008v21n3p15Biotemas; v. 21 n. 3 (2008); 15-212175-79250103-1643reponame:Biotemas (Online)instname:Universidade Federal de Santa Catarina (UFSC)instacron:UFSCporhttps://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2008v21n3p15/18841Copyright (c) 2008 Carlos Rodrigo Lehn, Caroline Leuchtenbergeinfo:eu-repo/semantics/openAccessLehn, Carlos RodrigoLeuchtenberge, Caroline2018-03-07T17:52:07Zoai:periodicos.ufsc.br:article/20715Revistahttp://www.biotemas.ufsc.br/index.htmPUBhttps://periodicos.ufsc.br/index.php/biotemas/oai||carlospinto@ccb.ufsc.br2175-79250103-1643opendoar:2018-03-07T17:52:07Biotemas (Online) - Universidade Federal de Santa Catarina (UFSC)false |
dc.title.none.fl_str_mv |
. Resistência ao fogo em uma população de Cyathea atrovirens (Langsd. & Fisch.) Domin (Cyatheaceae) no Estado do Rio Grande do Sul, Brasil |
title |
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spellingShingle |
. Lehn, Carlos Rodrigo |
title_short |
. |
title_full |
. |
title_fullStr |
. |
title_full_unstemmed |
. |
title_sort |
. |
author |
Lehn, Carlos Rodrigo |
author_facet |
Lehn, Carlos Rodrigo Leuchtenberge, Caroline |
author_role |
author |
author2 |
Leuchtenberge, Caroline |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Lehn, Carlos Rodrigo Leuchtenberge, Caroline |
description |
Fire resistance in a population of Cyathea atrovirens (Langsd. & Fisch.) Domin (Cyatheaceae) in the state of Rio Grande do Sul, Brazil. Cyathea atrovirens (Langsd. & Fisch.) Domin is a tree fern that occurs inthe state of Rio Grande do Sul from sea level to an altitude of 300m. We monitored a population of 10 individualsof C. atrovirens affected by burning in the municipality of Campo Bom, Rio Grande do Sul, Brazil. The objective of this study was to analyze the responses of a Cyathea atrovirens population after the occurrence of a fi re, considering the following aspects: frond production, annual rates of relative growth of caudex length, and the production, maturation and release of spores. The sporophytes of larger size produced more fronds than the smaller ones. We observed a signifi cant relationship between caudex length and relative growth (TCR) in individuals of smaller size. In the fi rst year, after the fi re, all individuals produced new fronds. The spore productionwas asynchronic. The species apparently demonstrated its capacity to support the occurrence of quick fi res, since the post-fi re frond production was gradually reestablished. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2008v21n3p15 10.5007/2175-7925.2008v21n3p15 |
url |
https://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2008v21n3p15 |
identifier_str_mv |
10.5007/2175-7925.2008v21n3p15 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2008v21n3p15/18841 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2008 Carlos Rodrigo Lehn, Caroline Leuchtenberge info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2008 Carlos Rodrigo Lehn, Caroline Leuchtenberge |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Catarina |
publisher.none.fl_str_mv |
Universidade Federal de Santa Catarina |
dc.source.none.fl_str_mv |
Biotemas; v. 21 n. 3 (2008); 15-21 2175-7925 0103-1643 reponame:Biotemas (Online) instname:Universidade Federal de Santa Catarina (UFSC) instacron:UFSC |
instname_str |
Universidade Federal de Santa Catarina (UFSC) |
instacron_str |
UFSC |
institution |
UFSC |
reponame_str |
Biotemas (Online) |
collection |
Biotemas (Online) |
repository.name.fl_str_mv |
Biotemas (Online) - Universidade Federal de Santa Catarina (UFSC) |
repository.mail.fl_str_mv |
||carlospinto@ccb.ufsc.br |
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1799940550384680960 |