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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Gado de Corte. |
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Data corrente: |
10/07/2003 |
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Data da última atualização: |
29/11/2016 |
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Tipo da produção científica: |
Autoria/Organização/Edição de Livros |
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Autoria: |
DIAS FILHO, M. B. |
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Afiliação: |
MOACYR BERNARDINO DIAS FILHO, CPATU. |
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Título: |
Degradação de pastagens: processos, causas e estratégias de recuperação. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Belém: Embrapa Amazônia Oriental, 2003. |
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Páginas: |
152 p. |
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Descrição Física: |
il. |
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ISBN: |
85-87690-17-5 |
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Idioma: |
Português |
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Conteúdo: |
Conceito de degradação de pastagens. Processos e causas da degradação de pastagens. Métodos de preparo de áreas e o processo de degradação de pastagens. Ciclos de nutrientes e o processo de degradação de pastagens. Manejo da pastagem e o processo de degradação. Manejo da fertilidade do solo. Manejo de plantas daninhas. Estratégias de recuperação. Renovação da pastagem. Implantação de sistemas agroflorestais e agrícolas. Pousio da pastagem para a recuperação da vegetação secundária. Custos. |
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Palavras-Chave: |
Manejo de pastagem; Pastagem degradada; Recuperação de área degradada. |
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Categoria do assunto: |
--
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 01020nam a2200169 a 4500
001 1403588
005 2016-11-29
008 2003 bl uuuu 00u1 u #d
020 $a85-87690-17-5
100 1 $aDIAS FILHO, M. B.
245 $aDegradação de pastagens$bprocessos, causas e estratégias de recuperação.
260 $aBelém: Embrapa Amazônia Oriental$c2003
300 $a152 p.$cil.
520 $aConceito de degradação de pastagens. Processos e causas da degradação de pastagens. Métodos de preparo de áreas e o processo de degradação de pastagens. Ciclos de nutrientes e o processo de degradação de pastagens. Manejo da pastagem e o processo de degradação. Manejo da fertilidade do solo. Manejo de plantas daninhas. Estratégias de recuperação. Renovação da pastagem. Implantação de sistemas agroflorestais e agrícolas. Pousio da pastagem para a recuperação da vegetação secundária. Custos.
653 $aManejo de pastagem
653 $aPastagem degradada
653 $aRecuperação de área degradada
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Suínos e Aves. Para informações adicionais entre em contato com cnpsa.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
06/10/2015 |
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Data da última atualização: |
18/02/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 5 |
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Autoria: |
NOGUEIRA, V. L. R.; ROCHA, L. L.; COLARES, G. B.; ANGELIM, A. L.; NORMANDO, L. R. O.; CANTAO, M. E.; AGNEZ-LIMA, L. F.; ANDREOTE, F. D.; MELO, V. M. M. |
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Afiliação: |
VANESSA L. R. NOGUEIRA, UFC; LIDIANNE L. ROCHA, UFC; GEORGIA B. COLARES, UFC; ALYSSON LIRA ANGELIM, UFC; LEONARDO R. O. NORMANDO, UFC; MAURICIO EGIDIO CANTAO, CNPSA; LUCYMARA F. A., UFRN; FERNANDO DINI ANDREOTE, ESALQ; VÂNIA M. M. MELO, UFC. |
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Título: |
Microbiomes and potential metabolic pathways of pristine and anthropized Brazilian mangroves. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Regional Studies in Marine Science, v. 2, p. 56-64, 2015. |
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DOI: |
http://dx.doi.org/10.1016/j.rsma.2015.08.008 |
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Idioma: |
Inglês |
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Conteúdo: |
Although microorganisms play key roles in mangrove food webs, the global knowledge of their diversity and function in these ecosystems is still scarce. Therefore, this study aimed to describe the microbiomes of pristine (TIM) and anthropized (JAG, PAC and COC) mangroves from a semiarid region of Brazil, and also to compare microbiomes from Southeast (SE) and Northeast (NE) mangroves, aiming to detect patterns related to geographic location. Pyrosequencing of four metagenomes showed that 90% of total classified sequences were assigned to Bacteria with a greater abundance of Proteobacteria (53%?60%), Bacteroidetes (7%?10%), Actinobacteria, Chloroflexi, Firmicutes and Planctomycetes (4%?7%), followed by Acidobacteria, Cyanobacteria and Verrucomicrobia (1.5%?4%) and phyla with relative abundances under 1%. The dominant proteobacterial classes were Deltaproteobacteria, Alphaproteobacteria and Gammaproteobacteria in the pristine (TIM) and in the less anthropized mangroves (JAG and PAC). Interestingly, in COC it was observed a decrease in Gammaproteobacteria with an increase in Betaproteobacteria, possibly related to its eutrophic condition. Our datasets also revealed some previously non-detected phyla in mangroves, comprising rare groups and several candidate divisions, which were previously reported for harsh environments, suggesting the involvement of these groups with the resilience of mangroves in semiarid regions. Comparative in silico analysis of SE and NE microbiomes showed similarities, but it was possible to detect a homogeneous group formed by Northeast mangroves (TIM, JAG and PAC), whereas the eutrophic mangrove (COC) clustered together to the urbanized Southeast mangrove. These results suggest that the semiarid climate might select peculiar bacterial communities and highlight the risk of microbial diversity homogenization due to anthropic actions on mangroves. Despite the detected changes in microbial composition, in general the potential metabolic pathways from these mangroves did not significantly differ. The observed functional redundancy explains the known resilience of these environments. MenosAlthough microorganisms play key roles in mangrove food webs, the global knowledge of their diversity and function in these ecosystems is still scarce. Therefore, this study aimed to describe the microbiomes of pristine (TIM) and anthropized (JAG, PAC and COC) mangroves from a semiarid region of Brazil, and also to compare microbiomes from Southeast (SE) and Northeast (NE) mangroves, aiming to detect patterns related to geographic location. Pyrosequencing of four metagenomes showed that 90% of total classified sequences were assigned to Bacteria with a greater abundance of Proteobacteria (53%?60%), Bacteroidetes (7%?10%), Actinobacteria, Chloroflexi, Firmicutes and Planctomycetes (4%?7%), followed by Acidobacteria, Cyanobacteria and Verrucomicrobia (1.5%?4%) and phyla with relative abundances under 1%. The dominant proteobacterial classes were Deltaproteobacteria, Alphaproteobacteria and Gammaproteobacteria in the pristine (TIM) and in the less anthropized mangroves (JAG and PAC). Interestingly, in COC it was observed a decrease in Gammaproteobacteria with an increase in Betaproteobacteria, possibly related to its eutrophic condition. Our datasets also revealed some previously non-detected phyla in mangroves, comprising rare groups and several candidate divisions, which were previously reported for harsh environments, suggesting the involvement of these groups with the resilience of mangroves in semiarid regions. Comparative in silico analysis of SE and NE microbiomes showed... Mostrar Tudo |
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Palavras-Chave: |
Brasil. |
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Thesagro: |
Cadeia alimentar; Ecossistema; Genoma; Mangue; Microbiologia; Sedimento. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03043naa a2200313 a 4500
001 2025895
005 2016-02-18
008 2015 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/j.rsma.2015.08.008$2DOI
100 1 $aNOGUEIRA, V. L. R.
245 $aMicrobiomes and potential metabolic pathways of pristine and anthropized Brazilian mangroves.$h[electronic resource]
260 $c2015
520 $aAlthough microorganisms play key roles in mangrove food webs, the global knowledge of their diversity and function in these ecosystems is still scarce. Therefore, this study aimed to describe the microbiomes of pristine (TIM) and anthropized (JAG, PAC and COC) mangroves from a semiarid region of Brazil, and also to compare microbiomes from Southeast (SE) and Northeast (NE) mangroves, aiming to detect patterns related to geographic location. Pyrosequencing of four metagenomes showed that 90% of total classified sequences were assigned to Bacteria with a greater abundance of Proteobacteria (53%?60%), Bacteroidetes (7%?10%), Actinobacteria, Chloroflexi, Firmicutes and Planctomycetes (4%?7%), followed by Acidobacteria, Cyanobacteria and Verrucomicrobia (1.5%?4%) and phyla with relative abundances under 1%. The dominant proteobacterial classes were Deltaproteobacteria, Alphaproteobacteria and Gammaproteobacteria in the pristine (TIM) and in the less anthropized mangroves (JAG and PAC). Interestingly, in COC it was observed a decrease in Gammaproteobacteria with an increase in Betaproteobacteria, possibly related to its eutrophic condition. Our datasets also revealed some previously non-detected phyla in mangroves, comprising rare groups and several candidate divisions, which were previously reported for harsh environments, suggesting the involvement of these groups with the resilience of mangroves in semiarid regions. Comparative in silico analysis of SE and NE microbiomes showed similarities, but it was possible to detect a homogeneous group formed by Northeast mangroves (TIM, JAG and PAC), whereas the eutrophic mangrove (COC) clustered together to the urbanized Southeast mangrove. These results suggest that the semiarid climate might select peculiar bacterial communities and highlight the risk of microbial diversity homogenization due to anthropic actions on mangroves. Despite the detected changes in microbial composition, in general the potential metabolic pathways from these mangroves did not significantly differ. The observed functional redundancy explains the known resilience of these environments.
650 $aCadeia alimentar
650 $aEcossistema
650 $aGenoma
650 $aMangue
650 $aMicrobiologia
650 $aSedimento
653 $aBrasil
700 1 $aROCHA, L. L.
700 1 $aCOLARES, G. B.
700 1 $aANGELIM, A. L.
700 1 $aNORMANDO, L. R. O.
700 1 $aCANTAO, M. E.
700 1 $aAGNEZ-LIMA, L. F.
700 1 $aANDREOTE, F. D.
700 1 $aMELO, V. M. M.
773 $tRegional Studies in Marine Science$gv. 2, p. 56-64, 2015.
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Embrapa Suínos e Aves (CNPSA) |
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