SEED BANK DIVERSITY IN DIFFERENT MANAGED AREAS OF CAATINGA IN THE SEMIARID REGION OF PARAÍBA STATE, BRAZIL
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Ciência Florestal (Online) |
Texto Completo: | https://periodicos.ufsm.br/cienciaflorestal/article/view/26459 |
Resumo: | Caatinga, the predominant vegetation type of the semiarid region of northeastern Brazil, is composed by plants showing efficient mechanisms to keep them in the ecosystem. The herbaceous, bush and tree strata provide food for animals and several products for human use, and supply seedbank with propagules to assure plant recovery. The objective of this study was to compare seedbank density, composition and diversity of three sites with different vegetation physiognomies: craibeira plantation site (A1), degraded site (A2) and juremas + sabia plantation site (A3), located at the Nupeárido Experimental Station/Federal University of Campina Grande (UFCG), Patos, PB state, Brazil. Five litterfal + soil samples were collected in each site and taken to the Forest Nursery of UFCG Campus in Patos and kept under a 50% solar radiation reduction plastic screen and a daily manual irrigation regimen, where they were observed during 90 days for counting and identification of the emerging seedlings. Plantule density for each site was compared by the χ2 test (P<0.05). Plant diversity and species richness were evaluated by Shannon-Wiener (H’) and Pielou Uniformity (e”) indexes, respectively. Herb species predominated in seedbank of all sites, and the number of seeds of tree species increased in the craibeira plantation site resulting from the prolonged presence of animals attracted by the thermal comfort under tree canopy. |
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SEED BANK DIVERSITY IN DIFFERENT MANAGED AREAS OF CAATINGA IN THE SEMIARID REGION OF PARAÍBA STATE, BRAZILDIVERSIDADE DO BANCO DE SEMENTES EM DIFERENTES ÁREAS DE CAATINGA MANEJADAS NO SEMIÁRIDO DA PARAÍBA, BRASILseed dispersioncaatingadiversity index.dispersão de sementesCaatingaíndice de diversidade.Caatinga, the predominant vegetation type of the semiarid region of northeastern Brazil, is composed by plants showing efficient mechanisms to keep them in the ecosystem. The herbaceous, bush and tree strata provide food for animals and several products for human use, and supply seedbank with propagules to assure plant recovery. The objective of this study was to compare seedbank density, composition and diversity of three sites with different vegetation physiognomies: craibeira plantation site (A1), degraded site (A2) and juremas + sabia plantation site (A3), located at the Nupeárido Experimental Station/Federal University of Campina Grande (UFCG), Patos, PB state, Brazil. Five litterfal + soil samples were collected in each site and taken to the Forest Nursery of UFCG Campus in Patos and kept under a 50% solar radiation reduction plastic screen and a daily manual irrigation regimen, where they were observed during 90 days for counting and identification of the emerging seedlings. Plantule density for each site was compared by the χ2 test (P<0.05). Plant diversity and species richness were evaluated by Shannon-Wiener (H’) and Pielou Uniformity (e”) indexes, respectively. Herb species predominated in seedbank of all sites, and the number of seeds of tree species increased in the craibeira plantation site resulting from the prolonged presence of animals attracted by the thermal comfort under tree canopy. A Caatinga, vegetação predominante da região semiárida do nordeste do Brasil, é formada por plantas com mecanismos eficientes que garantem a sua permanência no ecossistema. Seus estratos herbáceo, arbustivo e arbóreo fornecem alimento para os animais e diversos produtos para o homem e mantêm o banco de sementes como reserva para a recomposição florística. O objetivo deste trabalho foi comparar a densidade, a composição e a diversidade do banco de sementes de três áreas de Caatinga manejadas: área com plantio de craibeiras (A1), área degradada (A2) e área com plantio de juremas+sabiá (A3), localizadas na Fazenda Nupeárido, pertencente à Universidade Federal de Campina Grande (UFCG), Patos – PB, Brasil. Cinco amostras de serapilheira + solo de cada área foram coletadas e levadas ao Viveiro Florestal da UFCG e mantidas sob sombrite de 50% de redução solar e um regime de irrigação manual diária, onde permaneceram por 90 dias para contagem e identificação dos indivíduos emergentes. A densidade de plântulas foi comparada entre as três áreas através do teste do χ2 com P<0,05. A diversidade florística e a riqueza de espécies foram avaliadas utilizando os índices de Shannon-Wiener (H’) e de uniformidade de Pielou (e’), respectivamente. O banco de sementes foi composto predominantemente de espécies herbáceas nas três áreas e o estoque de sementes de espécies arbóreas teve incremento significativo na área de craibeiras resultante da presença prolongada de animais atraídos pelo conforto térmico local, proporcionado pelas copas.Universidade Federal de Santa Maria2017-03-31info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsm.br/cienciaflorestal/article/view/2645910.5902/1980509826459Ciência Florestal; Vol. 27 No. 1 (2017); 203-213Ciência Florestal; v. 27 n. 1 (2017); 203-2131980-50980103-9954reponame:Ciência Florestal (Online)instname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMporhttps://periodicos.ufsm.br/cienciaflorestal/article/view/26459/pdf_1Copyright (c) 2017 Ciência Florestalinfo:eu-repo/semantics/openAccessRibeiro, Terezinha de OliveiraBakke, Ivonete AlvesSouto, Patrícia CarneiroBakke, Olaf AndreasLucena, Danielly da Silva2017-04-05T20:14:57Zoai:ojs.pkp.sfu.ca:article/26459Revistahttp://www.ufsm.br/cienciaflorestal/ONGhttps://old.scielo.br/oai/scielo-oai.php||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br1980-50980103-9954opendoar:2017-04-05T20:14:57Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)false |
dc.title.none.fl_str_mv |
SEED BANK DIVERSITY IN DIFFERENT MANAGED AREAS OF CAATINGA IN THE SEMIARID REGION OF PARAÍBA STATE, BRAZIL DIVERSIDADE DO BANCO DE SEMENTES EM DIFERENTES ÁREAS DE CAATINGA MANEJADAS NO SEMIÁRIDO DA PARAÍBA, BRASIL |
title |
SEED BANK DIVERSITY IN DIFFERENT MANAGED AREAS OF CAATINGA IN THE SEMIARID REGION OF PARAÍBA STATE, BRAZIL |
spellingShingle |
SEED BANK DIVERSITY IN DIFFERENT MANAGED AREAS OF CAATINGA IN THE SEMIARID REGION OF PARAÍBA STATE, BRAZIL Ribeiro, Terezinha de Oliveira seed dispersion caatinga diversity index. dispersão de sementes Caatinga índice de diversidade. |
title_short |
SEED BANK DIVERSITY IN DIFFERENT MANAGED AREAS OF CAATINGA IN THE SEMIARID REGION OF PARAÍBA STATE, BRAZIL |
title_full |
SEED BANK DIVERSITY IN DIFFERENT MANAGED AREAS OF CAATINGA IN THE SEMIARID REGION OF PARAÍBA STATE, BRAZIL |
title_fullStr |
SEED BANK DIVERSITY IN DIFFERENT MANAGED AREAS OF CAATINGA IN THE SEMIARID REGION OF PARAÍBA STATE, BRAZIL |
title_full_unstemmed |
SEED BANK DIVERSITY IN DIFFERENT MANAGED AREAS OF CAATINGA IN THE SEMIARID REGION OF PARAÍBA STATE, BRAZIL |
title_sort |
SEED BANK DIVERSITY IN DIFFERENT MANAGED AREAS OF CAATINGA IN THE SEMIARID REGION OF PARAÍBA STATE, BRAZIL |
author |
Ribeiro, Terezinha de Oliveira |
author_facet |
Ribeiro, Terezinha de Oliveira Bakke, Ivonete Alves Souto, Patrícia Carneiro Bakke, Olaf Andreas Lucena, Danielly da Silva |
author_role |
author |
author2 |
Bakke, Ivonete Alves Souto, Patrícia Carneiro Bakke, Olaf Andreas Lucena, Danielly da Silva |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Ribeiro, Terezinha de Oliveira Bakke, Ivonete Alves Souto, Patrícia Carneiro Bakke, Olaf Andreas Lucena, Danielly da Silva |
dc.subject.por.fl_str_mv |
seed dispersion caatinga diversity index. dispersão de sementes Caatinga índice de diversidade. |
topic |
seed dispersion caatinga diversity index. dispersão de sementes Caatinga índice de diversidade. |
description |
Caatinga, the predominant vegetation type of the semiarid region of northeastern Brazil, is composed by plants showing efficient mechanisms to keep them in the ecosystem. The herbaceous, bush and tree strata provide food for animals and several products for human use, and supply seedbank with propagules to assure plant recovery. The objective of this study was to compare seedbank density, composition and diversity of three sites with different vegetation physiognomies: craibeira plantation site (A1), degraded site (A2) and juremas + sabia plantation site (A3), located at the Nupeárido Experimental Station/Federal University of Campina Grande (UFCG), Patos, PB state, Brazil. Five litterfal + soil samples were collected in each site and taken to the Forest Nursery of UFCG Campus in Patos and kept under a 50% solar radiation reduction plastic screen and a daily manual irrigation regimen, where they were observed during 90 days for counting and identification of the emerging seedlings. Plantule density for each site was compared by the χ2 test (P<0.05). Plant diversity and species richness were evaluated by Shannon-Wiener (H’) and Pielou Uniformity (e”) indexes, respectively. Herb species predominated in seedbank of all sites, and the number of seeds of tree species increased in the craibeira plantation site resulting from the prolonged presence of animals attracted by the thermal comfort under tree canopy. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-03-31 |
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/26459 10.5902/1980509826459 |
url |
https://periodicos.ufsm.br/cienciaflorestal/article/view/26459 |
identifier_str_mv |
10.5902/1980509826459 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufsm.br/cienciaflorestal/article/view/26459/pdf_1 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2017 Ciência Florestal info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2017 Ciência Florestal |
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. 27 No. 1 (2017); 203-213 Ciência Florestal; v. 27 n. 1 (2017); 203-213 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_ |
1799944131851583488 |