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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
05/05/2017 |
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Data da última atualização: |
18/01/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, A. F. da; FREITAS, A. D. S. de; COSTA, T. L.; FERNANDES JUNIOR, P. I.; MARTINS, L. M. V.; SANTOS, C. E. de R. e S.; MENEZES, K. A. S.; SAMPAIO, E. V. de S. B. |
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Afiliação: |
ALEKSANDRO FERREIRA DA SILVA, Universidade Federal Rural de Pernambuco; ANA DOLORES SANTIAGO DE FREITAS, Universidade Federal Rural de Pernambuco; TANIA LUCIA COSTA, Universidade Federal Rural de Pernambuco; PAULO IVAN FERNANDES JUNIOR, CPATSA; LINDETE MIRIA VIEIRA MARTINS, Departamento de Tecnologia e Cieˆncias Sociais, Universidade do Estado da Bahia, Juazeiro, BA; CAROLINA ETIENNE DE ROSALIA E SILVA SANTOS, Universidade Federal Rural de Pernambuco; KELLY ALEXSANDRA SOUZA MENEZES; EVERARDO VALADARES DE SA BARRETTO SAMPAIO, Departamento de Energia Nuclear, Universidade Federal de Pernambuco. |
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Título: |
Biological nitrogen fixation in tropical dry forests with different legume diversity and abundance. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Nutrient Cycling in Agroecosystems, v. 107, n. 3, p. 321-334, 2017. |
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DOI: |
10.1007/s10705-017-9834-1 |
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Idioma: |
Inglês |
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Conteúdo: |
Tropical dry forests have high diversity and plant abundance of potentially biologically nitrogen fixing (BNF) legume species, attributed to the ecological advantage of fixation. However, there are few estimates of N quantities annually fixed, hindering the understanding of factors that control BNF, like low phosphorus availability. The quantities of N fixed in three dry forest (caatinga) fragments of the semiarid Brazilian northeastern region with different legume plant proportions were determined and seedlings of Mimosa tenuiflora were grown with phosphorous fertilized soil from the fragments to verify if lack of fixation was due to the absence of rhizobia populations or P deficiency. The vegetation of all areas was dominated by legume plants, mainly potentially nodulating ones, despite the relatively high soil N availability. M. tenuiflora was the most abundant nodulating legume in all fragments, with annual leaf productions from 800 to 1400 kg ha - 1 . BNF amounts were low (1.4, 18 and 3.6 kg ha - 1 year 1 in the mature caatinga of Petrolina and in the mature and regenerating caatingas of Sa ? o Joa ? o, respectively) considering the high proportions of potentially nodu- lating plants (33, 61 and 82% of total plant basal area), because 80, 10 and 70% of these plants were not fixing and those fixing had only 20?46% of their N derived from the atmosphere. Since the pot grown seedlings nodulated abundantly, the low BNF could not be explained by absence of microsymbionts but likely to low symbiosis efficiency due to relatively high N and low P availability. MenosTropical dry forests have high diversity and plant abundance of potentially biologically nitrogen fixing (BNF) legume species, attributed to the ecological advantage of fixation. However, there are few estimates of N quantities annually fixed, hindering the understanding of factors that control BNF, like low phosphorus availability. The quantities of N fixed in three dry forest (caatinga) fragments of the semiarid Brazilian northeastern region with different legume plant proportions were determined and seedlings of Mimosa tenuiflora were grown with phosphorous fertilized soil from the fragments to verify if lack of fixation was due to the absence of rhizobia populations or P deficiency. The vegetation of all areas was dominated by legume plants, mainly potentially nodulating ones, despite the relatively high soil N availability. M. tenuiflora was the most abundant nodulating legume in all fragments, with annual leaf productions from 800 to 1400 kg ha - 1 . BNF amounts were low (1.4, 18 and 3.6 kg ha - 1 year 1 in the mature caatinga of Petrolina and in the mature and regenerating caatingas of Sa ? o Joa ? o, respectively) considering the high proportions of potentially nodu- lating plants (33, 61 and 82% of total plant basal area), because 80, 10 and 70% of these plants were not fixing and those fixing had only 20?46% of their N derived from the atmosphere. Since the pot grown seedlings nodulated abundantly, the low BNF could not be explained by absence of microsymbionts but... Mostrar Tudo |
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Palavras-Chave: |
Biomassa foliar; Fixação biológica de nitrogênio; Leaf biomass; Natural abundance; Semiárido. |
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Thesagro: |
Floresta; Floresta tropical; Rhizobium. |
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Thesaurus Nal: |
Symbiosis. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/159576/1/Paulo-Ivan-2017.pdf
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Marc: |
LEADER 02585naa a2200325 a 4500
001 2069272
005 2018-01-18
008 2017 bl uuuu u00u1 u #d
024 7 $a10.1007/s10705-017-9834-1$2DOI
100 1 $aSILVA, A. F. da
245 $aBiological nitrogen fixation in tropical dry forests with different legume diversity and abundance.$h[electronic resource]
260 $c2017
520 $aTropical dry forests have high diversity and plant abundance of potentially biologically nitrogen fixing (BNF) legume species, attributed to the ecological advantage of fixation. However, there are few estimates of N quantities annually fixed, hindering the understanding of factors that control BNF, like low phosphorus availability. The quantities of N fixed in three dry forest (caatinga) fragments of the semiarid Brazilian northeastern region with different legume plant proportions were determined and seedlings of Mimosa tenuiflora were grown with phosphorous fertilized soil from the fragments to verify if lack of fixation was due to the absence of rhizobia populations or P deficiency. The vegetation of all areas was dominated by legume plants, mainly potentially nodulating ones, despite the relatively high soil N availability. M. tenuiflora was the most abundant nodulating legume in all fragments, with annual leaf productions from 800 to 1400 kg ha - 1 . BNF amounts were low (1.4, 18 and 3.6 kg ha - 1 year 1 in the mature caatinga of Petrolina and in the mature and regenerating caatingas of Sa ? o Joa ? o, respectively) considering the high proportions of potentially nodu- lating plants (33, 61 and 82% of total plant basal area), because 80, 10 and 70% of these plants were not fixing and those fixing had only 20?46% of their N derived from the atmosphere. Since the pot grown seedlings nodulated abundantly, the low BNF could not be explained by absence of microsymbionts but likely to low symbiosis efficiency due to relatively high N and low P availability.
650 $aSymbiosis
650 $aFloresta
650 $aFloresta tropical
650 $aRhizobium
653 $aBiomassa foliar
653 $aFixação biológica de nitrogênio
653 $aLeaf biomass
653 $aNatural abundance
653 $aSemiárido
700 1 $aFREITAS, A. D. S. de
700 1 $aCOSTA, T. L.
700 1 $aFERNANDES JUNIOR, P. I.
700 1 $aMARTINS, L. M. V.
700 1 $aSANTOS, C. E. de R. e S.
700 1 $aMENEZES, K. A. S.
700 1 $aSAMPAIO, E. V. de S. B.
773 $tNutrient Cycling in Agroecosystems$gv. 107, n. 3, p. 321-334, 2017.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pantanal. Para informações adicionais entre em contato com cpap.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
11/01/2005 |
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Data da última atualização: |
11/01/2005 |
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Autoria: |
MORAES, A. S.; COMASTRI FILHO, J. A. |
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Afiliação: |
Embrapa Pantanal (Corumbá, MS). |
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Título: |
Gerência e administração. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: CARDOSO, E. L. (Ed. Tecn.). Gado de corte no Pantanal: o produtor pergunta, a Embrapa responde. Brasília: Informação Tecnológica, 2004. (Coleção 500 perguntas, 500 respostas). |
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Páginas: |
p.203-213. |
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Idioma: |
Português |
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Palavras-Chave: |
Gerência. |
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Thesagro: |
Fazenda; Pecuária. |
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Thesaurus NAL: |
Pantanal. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00586naa a2200181 a 4500
001 1811484
005 2005-01-11
008 2004 bl uuuu u00u1 u #d
100 1 $aMORAES, A. S.
245 $aGerência e administração.
260 $c2004
300 $ap.203-213.
650 $aPantanal
650 $aFazenda
650 $aPecuária
653 $aGerência
700 1 $aCOMASTRI FILHO, J. A.
773 $tIn: CARDOSO, E. L. (Ed. Tecn.). Gado de corte no Pantanal: o produtor pergunta, a Embrapa responde. Brasília: Informação Tecnológica, 2004. (Coleção 500 perguntas, 500 respostas).
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Embrapa Pantanal (CPAP) |
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