Biomass and seasonality of fine roots of Eastern Amazon Savannas

Detalhes bibliográficos
Autor(a) principal: Braga, Elayne Oliveira
Data de Publicação: 2017
Outros Autores: Rocha, Antônio Elielson Sousa, Costa Neto, Salustiano Vilar, Lima, Tâmara Thaiz Santana, Costa, Luiz Gonzaga Silva, Miranda, Izildinha de Souza
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Florestal Brasileira (Online)
Texto Completo: https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1382
Resumo: The objective of this work was to compare the biomass of fine roots in different physiognomies evaluating the influence of seasonality at the Amazon savannas located in Amapá and Pará States. Soil samples were collected in five positions, from 10 to 50 cm deep. Three points were allocated at typical savanna (Cerrado sensu stricto), 4 at open savanna (Campo Cerrado) and 2 at natural grassland (Campo Limpo). At each point 4 replications were performed. The influence of seasonality was verified only in Campo Cerrado in April (rainfall peak), July (end of rainy season) and October (peak of drought) of 2010 and in January of 2011 (beginning of rainy season). The physiognomies were differentiated by root mass when analyzed under different diametric classes of roots and different depths. The largest mass of fine roots occurred at the peak of the dry season. These results suggest different strategies in finest roots allocation in different physiognomies and soil depths and differences of roots dynamics to increase absorption potential during dry season.
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spelling Biomass and seasonality of fine roots of Eastern Amazon SavannasBiomassa e sazonalidade das raízes finas em savanas da Amazônia OrientalDry seasonRoot systemsRhizosphereEstação secaSistema radicularRizosferaThe objective of this work was to compare the biomass of fine roots in different physiognomies evaluating the influence of seasonality at the Amazon savannas located in Amapá and Pará States. Soil samples were collected in five positions, from 10 to 50 cm deep. Three points were allocated at typical savanna (Cerrado sensu stricto), 4 at open savanna (Campo Cerrado) and 2 at natural grassland (Campo Limpo). At each point 4 replications were performed. The influence of seasonality was verified only in Campo Cerrado in April (rainfall peak), July (end of rainy season) and October (peak of drought) of 2010 and in January of 2011 (beginning of rainy season). The physiognomies were differentiated by root mass when analyzed under different diametric classes of roots and different depths. The largest mass of fine roots occurred at the peak of the dry season. These results suggest different strategies in finest roots allocation in different physiognomies and soil depths and differences of roots dynamics to increase absorption potential during dry season.Este trabalho objetivou comparar a biomassa de raízes finas em diferentes fisionomias e avaliar a influência da sazonalidade sobre a massa de raízes finas em savanas amazônicas localizadas no Amapá e Pará. Amostras de solos foram coletadas em cinco profundidades, de 10 em 10 cm, em três pontos no Cerrado sensu stricto, quatro no Campo Cerrado e dois no Campo Limpo, com 4 repetições em cada posição. A influência da sazonalidade foi verificada apenas no Campo Cerrado, em abril (pico das chuvas), julho (final das chuvas) e outubro (pico da seca) de 2010 e em janeiro de 2011 (inicio das chuvas). As fisionomias foram diferenciadas pela massa de raízes, quando analisadas nas diferentes classes diamétricas de raízes e nas diferentes profundidades. A maior massa de raízes finas ocorreu no pico da estação seca. Esses resultados sugerem estratégias diferentes das fisionomias na alocação das raízes mais finas em diferentes profundidas do solo e na dinâmica das raízes para aumentar o potencial de absorção durante a seca.Embrapa Florestas2017-12-29info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/vnd.openxmlformats-officedocument.wordprocessingml.documentapplication/vnd.openxmlformats-officedocument.wordprocessingml.documenthttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/138210.4336/2017.pfb.37.92.1382Pesquisa Florestal Brasileira; v. 37 n. 92 (2017): out./dez.; 475-483Pesquisa Florestal Brasileira; Vol. 37 No. 92 (2017): out./dez.; 475-4831983-26051809-3647reponame:Pesquisa Florestal Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1382/606https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1382/1352https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1382/1353Braga, Elayne OliveiraRocha, Antônio Elielson SousaCosta Neto, Salustiano VilarLima, Tâmara Thaiz SantanaCosta, Luiz Gonzaga SilvaMiranda, Izildinha de Souzainfo:eu-repo/semantics/openAccess2019-01-02T18:39:23Zoai:pfb.cnpf.embrapa.br/pfb:article/1382Revistahttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/PUBhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/oaipfb@embrapa.br || revista.pfb@gmail.com || patricia.mattos@embrapa.br1983-26051809-3647opendoar:2019-01-02T18:39:23Pesquisa Florestal Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Biomass and seasonality of fine roots of Eastern Amazon Savannas
Biomassa e sazonalidade das raízes finas em savanas da Amazônia Oriental
title Biomass and seasonality of fine roots of Eastern Amazon Savannas
spellingShingle Biomass and seasonality of fine roots of Eastern Amazon Savannas
Braga, Elayne Oliveira
Dry season
Root systems
Rhizosphere
Estação seca
Sistema radicular
Rizosfera
title_short Biomass and seasonality of fine roots of Eastern Amazon Savannas
title_full Biomass and seasonality of fine roots of Eastern Amazon Savannas
title_fullStr Biomass and seasonality of fine roots of Eastern Amazon Savannas
title_full_unstemmed Biomass and seasonality of fine roots of Eastern Amazon Savannas
title_sort Biomass and seasonality of fine roots of Eastern Amazon Savannas
author Braga, Elayne Oliveira
author_facet Braga, Elayne Oliveira
Rocha, Antônio Elielson Sousa
Costa Neto, Salustiano Vilar
Lima, Tâmara Thaiz Santana
Costa, Luiz Gonzaga Silva
Miranda, Izildinha de Souza
author_role author
author2 Rocha, Antônio Elielson Sousa
Costa Neto, Salustiano Vilar
Lima, Tâmara Thaiz Santana
Costa, Luiz Gonzaga Silva
Miranda, Izildinha de Souza
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Braga, Elayne Oliveira
Rocha, Antônio Elielson Sousa
Costa Neto, Salustiano Vilar
Lima, Tâmara Thaiz Santana
Costa, Luiz Gonzaga Silva
Miranda, Izildinha de Souza
dc.subject.por.fl_str_mv Dry season
Root systems
Rhizosphere
Estação seca
Sistema radicular
Rizosfera
topic Dry season
Root systems
Rhizosphere
Estação seca
Sistema radicular
Rizosfera
description The objective of this work was to compare the biomass of fine roots in different physiognomies evaluating the influence of seasonality at the Amazon savannas located in Amapá and Pará States. Soil samples were collected in five positions, from 10 to 50 cm deep. Three points were allocated at typical savanna (Cerrado sensu stricto), 4 at open savanna (Campo Cerrado) and 2 at natural grassland (Campo Limpo). At each point 4 replications were performed. The influence of seasonality was verified only in Campo Cerrado in April (rainfall peak), July (end of rainy season) and October (peak of drought) of 2010 and in January of 2011 (beginning of rainy season). The physiognomies were differentiated by root mass when analyzed under different diametric classes of roots and different depths. The largest mass of fine roots occurred at the peak of the dry season. These results suggest different strategies in finest roots allocation in different physiognomies and soil depths and differences of roots dynamics to increase absorption potential during dry season.
publishDate 2017
dc.date.none.fl_str_mv 2017-12-29
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://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1382
10.4336/2017.pfb.37.92.1382
url https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1382
identifier_str_mv 10.4336/2017.pfb.37.92.1382
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1382/606
https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1382/1352
https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1382/1353
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/vnd.openxmlformats-officedocument.wordprocessingml.document
application/vnd.openxmlformats-officedocument.wordprocessingml.document
dc.publisher.none.fl_str_mv Embrapa Florestas
publisher.none.fl_str_mv Embrapa Florestas
dc.source.none.fl_str_mv Pesquisa Florestal Brasileira; v. 37 n. 92 (2017): out./dez.; 475-483
Pesquisa Florestal Brasileira; Vol. 37 No. 92 (2017): out./dez.; 475-483
1983-2605
1809-3647
reponame:Pesquisa Florestal Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Florestal Brasileira (Online)
collection Pesquisa Florestal Brasileira (Online)
repository.name.fl_str_mv Pesquisa Florestal Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pfb@embrapa.br || revista.pfb@gmail.com || patricia.mattos@embrapa.br
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