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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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| Registros recuperados : 85 | |
| 7. |  | ROSA, A. do N.; NOBRE, P. R. C.; EUCLIDES FILHO, K. Avaliação nacional de touros das raças zebuínas - 1975/1986: Gir, Gir variedade mocha, Guzerá, Indubrasil, Nelore, Nelore variedade mocha, Tabapuã. Campo Grande, MS : EMBRAPA-CNPGC/ABCZ, 1987. 86 p. (EMBRAPA-CNPGC. Documentos, 35).| Biblioteca(s): Embrapa Gado de Corte. |
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| 8. | | ROSA, A. D. N.; SILVA, L. O. C. D.; NOBRE, P. R. C.; AMARAL, T. B. Avaliação genética, zootécnica e funcional de touros. In: CURSO DE ANDROLOGIA EM BOVINOS, 2005, Campo Grande, MS. Apostila didática. Campo Grande, MS : Embrapa Gado de Corte, 2005. Coordenação: Thais Basso Amaral e Cristina Santos. Data da realização: 7 a 11 de novembro de 2005. p. 147-165| Biblioteca(s): Embrapa Gado de Corte. |
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| 9. | | ROSA, A. do N.; SILVA, L. O. C. da; NOBRE, P. R. C. Avaliação genética, zootécnica e funcional de touros. In: CURSO DE ANDROLOGIA EM BOVINOS, 2., 2006, Campo Grande, MS. [Compilação dos trabalhos apresentados]. Campo Grande, MS: Embrapa Gado de Corte, 2006. p.154-171. CNPGC.| Biblioteca(s): Embrapa Gado de Corte. |
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| 17. | | NOBRE, P. R. C.; MILAGRES, J. C.; CASTRO, A. C. G.; FONSECA, F. A. Influencia do intervalo de partos e periodo seco na producao de leite do rebanho leiteiro da Universidade Federal de Vicosa, Estado de Minas Gerais. Revista da Sociedade Brasileira de Zootecnia, Vicosa, v.14, n.4, p.421-428, 1985. CNPGC.| Biblioteca(s): Embrapa Gado de Corte. |
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| Registros recuperados : 85 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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