CLUSTER ANALYSIS OF THE VEGETATION OF A FRAGMENT OF SEASONAL DECIDUOUS ALLUVIAL FOREST IN CACHOEIRA DO SUL, RS, BRAZIL
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Ciência Florestal (Online) |
Texto Completo: | https://periodicos.ufsm.br/cienciaflorestal/article/view/1789 |
Resumo: | In the state of Rio Grande do Sul, the riparian forests have been altered and fragmented by human activity. The objective of this study was to analyze the structure and floristic composition of these forests, therefore providing information for the re-establishment of these ecosystems. The study site is a 4 ha fragment located in Cachoeira do Sul- RS, low Jacuí River (30o04’36”S; 52o53’09”W). The arboreal and shrubby species and lianas (only life-form) were inventoried using 10 m wide strips that were laid out perpendicular to the river and spaced at 50 m intervals. The strips were divided into 10 x 10 m plots. Within each plot all a individuals with girth at breast height – SBH ³ 15 were identified and their circumference and height measured. Species density data were entered into a matrix (70 x 42) that was used for multivariate analysis. The presence of species clusters at the interior of the fragment was analysed with TWINSPAN (Two-way indicator species analysis), which identified the existence of three forest sub-formations (S-F1, S-F2 e S-F3). S-F1 was characterized by a higher influence of flooding and the ground water table was closer to the surface; S-F2 occurred in the central part of the fragment, but presented a strong influence of flooding provided by inundation; and S-F3, also in the central part of the fragment, occurred the greatest influence from the ground water table. The indicator species of the three forest sub formations were Sebastiania commersoniana and Eugenia uniflora (S-F1); Gymnanthes concolor, Cupania vernalis and Seguieria aculeata (S-F2); and Casearia sylvestris and Allophylus edulis (S-F3). Therefore, in preservation projects, conservation and re-establishment of these ecosystems, the forest community cannot be treated as riparian only, but environmental and, consequently, floristics variations should be considered. |
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CLUSTER ANALYSIS OF THE VEGETATION OF A FRAGMENT OF SEASONAL DECIDUOUS ALLUVIAL FOREST IN CACHOEIRA DO SUL, RS, BRAZILAnálise de agrupamento da vegetação de um fragmento de Floresta Estacional Decidual Aluvial, Cachoeira do Sul, RS, Brasil.riparian forestforest fragmentcluster analysissub formations.floresta ripáriafragmentoanálise de agrupamentossubformaçõesIn the state of Rio Grande do Sul, the riparian forests have been altered and fragmented by human activity. The objective of this study was to analyze the structure and floristic composition of these forests, therefore providing information for the re-establishment of these ecosystems. The study site is a 4 ha fragment located in Cachoeira do Sul- RS, low Jacuí River (30o04’36”S; 52o53’09”W). The arboreal and shrubby species and lianas (only life-form) were inventoried using 10 m wide strips that were laid out perpendicular to the river and spaced at 50 m intervals. The strips were divided into 10 x 10 m plots. Within each plot all a individuals with girth at breast height – SBH ³ 15 were identified and their circumference and height measured. Species density data were entered into a matrix (70 x 42) that was used for multivariate analysis. The presence of species clusters at the interior of the fragment was analysed with TWINSPAN (Two-way indicator species analysis), which identified the existence of three forest sub-formations (S-F1, S-F2 e S-F3). S-F1 was characterized by a higher influence of flooding and the ground water table was closer to the surface; S-F2 occurred in the central part of the fragment, but presented a strong influence of flooding provided by inundation; and S-F3, also in the central part of the fragment, occurred the greatest influence from the ground water table. The indicator species of the three forest sub formations were Sebastiania commersoniana and Eugenia uniflora (S-F1); Gymnanthes concolor, Cupania vernalis and Seguieria aculeata (S-F2); and Casearia sylvestris and Allophylus edulis (S-F3). Therefore, in preservation projects, conservation and re-establishment of these ecosystems, the forest community cannot be treated as riparian only, but environmental and, consequently, floristics variations should be considered.No estado do Rio Grande do Sul, as florestas ripárias se encontram alteradas pela ação antrópica formando fragmentos. O estudo teve como objetivo analisar a estrutura e florística interna dessas florestas o que subsidiará informações para o restabelecimento desses ecossistemas. A área escolhida foi um fragmento (30o04'36"S; 52o53'09"W), de 4 ha, localizada no município de Cachoeira do Sul, RS, no Baixo Rio Jacuí. As espécies arbóreas, arbustivas e lianas (somente quanto à forma de vida) foram inventariadas, utilizando-se faixas perpendiculares ao rio, distanciadas por 50 m, as quais apresentaram 10 m de largura e comprimento que variou com a largura da floresta. As faixas foram divididas em unidades amostrais de 10 x 10 m, nos quais foram identificados indivíduos com circunferência a 1,3m (CAP) 15 cm, registrados os valores de circunferência e altura. Os dados de densidade por espécie formaram uma matriz (70x42) utilizada na análise multivariada. A presença de agrupamentos de espécies no interior do fragmento foi avaliada pelo TWINSPAN (Two-way indicator species analysis), com base no qual foi constatada a existência de três subformações florestais (S-F1, S-F2 e S-F3). A S-F1 foi caracterizada por ter maior influência das enchentes e lençol freático mais próximo da superfície; a S-F2 ocorreu na parte central do fragmento, mas apresentou forte influência dos extravasamentos causados pelas enchentes; e na S-F3, também na porção central, ocorreu maior influência do lençol freático. As espécies indicadoras das subformações foram: Sebastiania commersoniana e Eugenia uniflora (S-F1); Gymnanthes concolor, Cupania vernalis e Seguieria aculeata (S-F2); e Casearia sylvestris e Allophylus edulis (S-F3). Portanto, em projetos de preservação, conservação e restabelecimento desses ecossistemas, a comunidade florestal não pode ser tratada unicamente como ripária, mas considerando as variações ambientais e, conseqüentemente, florísticas.Universidade Federal de Santa Maria2005-03-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsm.br/cienciaflorestal/article/view/178910.5902/198050981789Ciência Florestal; Vol. 14 No. 1 (2004); 133-147Ciência Florestal; v. 14 n. 1 (2004); 133-1471980-50980103-9954reponame:Ciência Florestal (Online)instname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMporhttps://periodicos.ufsm.br/cienciaflorestal/article/view/1789/pdfAraújo, Maristela MachadoLonghi, Solon JonasBrena, Doádi AntônioBarros, Paulo Luiz Contente deFranco, Sílvioinfo:eu-repo/semantics/openAccess2017-10-19T18:36:31Zoai:ojs.pkp.sfu.ca:article/1789Revistahttp://www.ufsm.br/cienciaflorestal/ONGhttps://old.scielo.br/oai/scielo-oai.php||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br1980-50980103-9954opendoar:2017-10-19T18:36:31Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)false |
dc.title.none.fl_str_mv |
CLUSTER ANALYSIS OF THE VEGETATION OF A FRAGMENT OF SEASONAL DECIDUOUS ALLUVIAL FOREST IN CACHOEIRA DO SUL, RS, BRAZIL Análise de agrupamento da vegetação de um fragmento de Floresta Estacional Decidual Aluvial, Cachoeira do Sul, RS, Brasil. |
title |
CLUSTER ANALYSIS OF THE VEGETATION OF A FRAGMENT OF SEASONAL DECIDUOUS ALLUVIAL FOREST IN CACHOEIRA DO SUL, RS, BRAZIL |
spellingShingle |
CLUSTER ANALYSIS OF THE VEGETATION OF A FRAGMENT OF SEASONAL DECIDUOUS ALLUVIAL FOREST IN CACHOEIRA DO SUL, RS, BRAZIL Araújo, Maristela Machado riparian forest forest fragment cluster analysis sub formations. floresta ripária fragmento análise de agrupamentos subformações |
title_short |
CLUSTER ANALYSIS OF THE VEGETATION OF A FRAGMENT OF SEASONAL DECIDUOUS ALLUVIAL FOREST IN CACHOEIRA DO SUL, RS, BRAZIL |
title_full |
CLUSTER ANALYSIS OF THE VEGETATION OF A FRAGMENT OF SEASONAL DECIDUOUS ALLUVIAL FOREST IN CACHOEIRA DO SUL, RS, BRAZIL |
title_fullStr |
CLUSTER ANALYSIS OF THE VEGETATION OF A FRAGMENT OF SEASONAL DECIDUOUS ALLUVIAL FOREST IN CACHOEIRA DO SUL, RS, BRAZIL |
title_full_unstemmed |
CLUSTER ANALYSIS OF THE VEGETATION OF A FRAGMENT OF SEASONAL DECIDUOUS ALLUVIAL FOREST IN CACHOEIRA DO SUL, RS, BRAZIL |
title_sort |
CLUSTER ANALYSIS OF THE VEGETATION OF A FRAGMENT OF SEASONAL DECIDUOUS ALLUVIAL FOREST IN CACHOEIRA DO SUL, RS, BRAZIL |
author |
Araújo, Maristela Machado |
author_facet |
Araújo, Maristela Machado Longhi, Solon Jonas Brena, Doádi Antônio Barros, Paulo Luiz Contente de Franco, Sílvio |
author_role |
author |
author2 |
Longhi, Solon Jonas Brena, Doádi Antônio Barros, Paulo Luiz Contente de Franco, Sílvio |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Araújo, Maristela Machado Longhi, Solon Jonas Brena, Doádi Antônio Barros, Paulo Luiz Contente de Franco, Sílvio |
dc.subject.por.fl_str_mv |
riparian forest forest fragment cluster analysis sub formations. floresta ripária fragmento análise de agrupamentos subformações |
topic |
riparian forest forest fragment cluster analysis sub formations. floresta ripária fragmento análise de agrupamentos subformações |
description |
In the state of Rio Grande do Sul, the riparian forests have been altered and fragmented by human activity. The objective of this study was to analyze the structure and floristic composition of these forests, therefore providing information for the re-establishment of these ecosystems. The study site is a 4 ha fragment located in Cachoeira do Sul- RS, low Jacuí River (30o04’36”S; 52o53’09”W). The arboreal and shrubby species and lianas (only life-form) were inventoried using 10 m wide strips that were laid out perpendicular to the river and spaced at 50 m intervals. The strips were divided into 10 x 10 m plots. Within each plot all a individuals with girth at breast height – SBH ³ 15 were identified and their circumference and height measured. Species density data were entered into a matrix (70 x 42) that was used for multivariate analysis. The presence of species clusters at the interior of the fragment was analysed with TWINSPAN (Two-way indicator species analysis), which identified the existence of three forest sub-formations (S-F1, S-F2 e S-F3). S-F1 was characterized by a higher influence of flooding and the ground water table was closer to the surface; S-F2 occurred in the central part of the fragment, but presented a strong influence of flooding provided by inundation; and S-F3, also in the central part of the fragment, occurred the greatest influence from the ground water table. The indicator species of the three forest sub formations were Sebastiania commersoniana and Eugenia uniflora (S-F1); Gymnanthes concolor, Cupania vernalis and Seguieria aculeata (S-F2); and Casearia sylvestris and Allophylus edulis (S-F3). Therefore, in preservation projects, conservation and re-establishment of these ecosystems, the forest community cannot be treated as riparian only, but environmental and, consequently, floristics variations should be considered. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-03-30 |
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.ufsm.br/cienciaflorestal/article/view/1789 10.5902/198050981789 |
url |
https://periodicos.ufsm.br/cienciaflorestal/article/view/1789 |
identifier_str_mv |
10.5902/198050981789 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufsm.br/cienciaflorestal/article/view/1789/pdf |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
dc.source.none.fl_str_mv |
Ciência Florestal; Vol. 14 No. 1 (2004); 133-147 Ciência Florestal; v. 14 n. 1 (2004); 133-147 1980-5098 0103-9954 reponame:Ciência Florestal (Online) instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Ciência Florestal (Online) |
collection |
Ciência Florestal (Online) |
repository.name.fl_str_mv |
Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM) |
repository.mail.fl_str_mv |
||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br |
_version_ |
1799944126508040192 |