Natural regeneration of the shrub-tree stratum in areas of caatinga at the Seridó Ecological Station, RN, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Biotemas (Online) |
Texto Completo: | https://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2016v29n2p17 |
Resumo: | The objective of this study was to evaluate the composition and floristic similarity, regeneration origin and the influence of silviculture systems on the diversity and absolute density of regeneration of the shrub-tree stratum in two areas of Caatinga. The first area is in the Seridó Ecological Station and the second is on Pedro Candido Farm, in the city of Serra Negra do Norte, in the Seridó region of RN, Brazil. In each area, 16 subplots of 25m2 were delimited and individuals with a base circumference ? 6 cm and a height > 0.5 m were included in the study. The plants were classified according to origin of regeneration (seeds or budding). The following parameters were calculated: frequency, density, Shannon’s diversity index, Pielou’s evenness index and Jaccard’s index. The sample included 2112 individuals belonging to 13 species, 11 genera and seven families. Considering the two areas, the values for density, Shannon’s index and Pielou’s index diverged in both years of the study. Regeneration by seeds was predominant in the two locations. After 22 to 24 years of silvicultural intervention, it was found that the treatments had no influence on density and floristic diversity. |
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Natural regeneration of the shrub-tree stratum in areas of caatinga at the Seridó Ecological Station, RN, BrazilRegeneração natural do estrato arbustivo-arbóreo em área de Caatinga na Estação Ecológica do Seridó – RN, BrasilThe objective of this study was to evaluate the composition and floristic similarity, regeneration origin and the influence of silviculture systems on the diversity and absolute density of regeneration of the shrub-tree stratum in two areas of Caatinga. The first area is in the Seridó Ecological Station and the second is on Pedro Candido Farm, in the city of Serra Negra do Norte, in the Seridó region of RN, Brazil. In each area, 16 subplots of 25m2 were delimited and individuals with a base circumference ? 6 cm and a height > 0.5 m were included in the study. The plants were classified according to origin of regeneration (seeds or budding). The following parameters were calculated: frequency, density, Shannon’s diversity index, Pielou’s evenness index and Jaccard’s index. The sample included 2112 individuals belonging to 13 species, 11 genera and seven families. Considering the two areas, the values for density, Shannon’s index and Pielou’s index diverged in both years of the study. Regeneration by seeds was predominant in the two locations. After 22 to 24 years of silvicultural intervention, it was found that the treatments had no influence on density and floristic diversity.Este trabalho objetivou avaliar a composição e a similaridade florística, o tipo de origem de regeneração e a influência de sistemas silviculturais sobre a diversidade e a densidade absoluta da regeneração do estrato arbustivo-arbóreo em duas áreas de Caatinga. A primeira encontra-se na Estação Ecológica do Seridó; a segunda, na Fazenda Pedro Cândido, ambas localizadas na cidade de Serra Negra do Norte, região do Seridó-RN. Utilizaram-se em cada área 16 subparcelas de 25 m2, em que foram incluídos indivíduos com CNB ? 6 cm e altura > 0,5 m. Estes foram classificados quanto ao tipo de origem de regeneração, se por sementes ou brotação de cepas. Calcularam-se os parâmetros frequência, densidade, diversidade de Shannon, Equabilidade de Pielou e Similaridade Jaccard. Foram amostrados 2112 indivíduos, pertencentes a 13 espécies, 11 gêneros e sete famílias. Os valores de densidade, Shannon e Pielou, nos dois anos, divergiram, considerando as duas áreas. A regeneração por sementes predominou nas duas localidades. Após 22 e 24 anos das intervenções silviculturais, verificou-se que não houve influência dos tratamentos sobre a densidade e diversidade florística.Universidade Federal de Santa Catarina2016-05-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2016v29n2p1710.5007/2175-7925.2016v29n2p17Biotemas; v. 29 n. 2 (2016); 17-312175-79250103-1643reponame:Biotemas (Online)instname:Universidade Federal de Santa Catarina (UFSC)instacron:UFSCporhttps://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2016v29n2p17/31668Copyright (c) 2016 Marcelo Silva de Lucena, Josuel Arcanjo da Silva, Allyson Rocha Alvesinfo:eu-repo/semantics/openAccessLucena, Marcelo Silva deSilva, Josuel Arcanjo daAlves, Allyson Rocha2017-10-18T18:55:23Zoai:periodicos.ufsc.br:article/41577Revistahttp://www.biotemas.ufsc.br/index.htmPUBhttps://periodicos.ufsc.br/index.php/biotemas/oai||carlospinto@ccb.ufsc.br2175-79250103-1643opendoar:2017-10-18T18:55:23Biotemas (Online) - Universidade Federal de Santa Catarina (UFSC)false |
dc.title.none.fl_str_mv |
Natural regeneration of the shrub-tree stratum in areas of caatinga at the Seridó Ecological Station, RN, Brazil Regeneração natural do estrato arbustivo-arbóreo em área de Caatinga na Estação Ecológica do Seridó – RN, Brasil |
title |
Natural regeneration of the shrub-tree stratum in areas of caatinga at the Seridó Ecological Station, RN, Brazil |
spellingShingle |
Natural regeneration of the shrub-tree stratum in areas of caatinga at the Seridó Ecological Station, RN, Brazil Lucena, Marcelo Silva de |
title_short |
Natural regeneration of the shrub-tree stratum in areas of caatinga at the Seridó Ecological Station, RN, Brazil |
title_full |
Natural regeneration of the shrub-tree stratum in areas of caatinga at the Seridó Ecological Station, RN, Brazil |
title_fullStr |
Natural regeneration of the shrub-tree stratum in areas of caatinga at the Seridó Ecological Station, RN, Brazil |
title_full_unstemmed |
Natural regeneration of the shrub-tree stratum in areas of caatinga at the Seridó Ecological Station, RN, Brazil |
title_sort |
Natural regeneration of the shrub-tree stratum in areas of caatinga at the Seridó Ecological Station, RN, Brazil |
author |
Lucena, Marcelo Silva de |
author_facet |
Lucena, Marcelo Silva de Silva, Josuel Arcanjo da Alves, Allyson Rocha |
author_role |
author |
author2 |
Silva, Josuel Arcanjo da Alves, Allyson Rocha |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Lucena, Marcelo Silva de Silva, Josuel Arcanjo da Alves, Allyson Rocha |
description |
The objective of this study was to evaluate the composition and floristic similarity, regeneration origin and the influence of silviculture systems on the diversity and absolute density of regeneration of the shrub-tree stratum in two areas of Caatinga. The first area is in the Seridó Ecological Station and the second is on Pedro Candido Farm, in the city of Serra Negra do Norte, in the Seridó region of RN, Brazil. In each area, 16 subplots of 25m2 were delimited and individuals with a base circumference ? 6 cm and a height > 0.5 m were included in the study. The plants were classified according to origin of regeneration (seeds or budding). The following parameters were calculated: frequency, density, Shannon’s diversity index, Pielou’s evenness index and Jaccard’s index. The sample included 2112 individuals belonging to 13 species, 11 genera and seven families. Considering the two areas, the values for density, Shannon’s index and Pielou’s index diverged in both years of the study. Regeneration by seeds was predominant in the two locations. After 22 to 24 years of silvicultural intervention, it was found that the treatments had no influence on density and floristic diversity. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-05-11 |
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/2175-7925.2016v29n2p17 10.5007/2175-7925.2016v29n2p17 |
url |
https://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2016v29n2p17 |
identifier_str_mv |
10.5007/2175-7925.2016v29n2p17 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2016v29n2p17/31668 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2016 Marcelo Silva de Lucena, Josuel Arcanjo da Silva, Allyson Rocha Alves info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2016 Marcelo Silva de Lucena, Josuel Arcanjo da Silva, Allyson Rocha Alves |
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. 29 n. 2 (2016); 17-31 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 |
_version_ |
1799940553930964992 |