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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
16/02/2017 |
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Data da última atualização: |
30/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ANDRADE, R. G.; TEIXEIRA, A. H. de C.; LEIVAS, J. F.; NOGUEIRA, S. F. |
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Afiliação: |
RICARDO GUIMARAES ANDRADE, CNPGL; ANTONIO HERIBERTO DE C TEIXEIRA, CNPM; JANICE FREITAS LEIVAS, CNPM; SANDRA FURLAN NOGUEIRA, CNPM. |
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Título: |
Analysis of evapotranspiration and biomass in pastures with degradation indicatives in the Upper Tocantins River Basin, in Brazilian Savanna. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Revista Ceres, v. 63, n. 6, p. 754-760, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this study was to apply the Simple Algorithm For Evapotranspiration Retrieving (SAFER) with MODIS images together with meteorological data to analyze evapotranspiration (ET) and biomass production (BIO) according to indicative classes of pasture degradation in Upper Tocantins River Basin. Indicative classes of degraded pastures were obtained from the NDVI time-series (2002-2012). To estimate ET and BIO in each class, MODIS images and data from meteorological stations of the year 2012 were used. The results show that compared to not-degraded pastures, ET and BIO were different in pastures with moderate to strong degradation, mainly during water stress period. Therefore, changes in energy balance partition may occur according to the degradation levels, considering that those indicatives of degradation processes were identified in 24% of the planted pasture areas. In this context, ET and BIO estimates using remote sensing techniques can be a reliable indicator of forage availability, and large-scale aspects related to the degradation of pastures. It is expected that this knowledge may contribute to initiatives of public policies aimed at controlling the loss of production potential of pasture areas in the Upper Tocantins River Basin in the state of Goiás, Brazil. |
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Palavras-Chave: |
Degraded pastures; SAFER. |
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Thesaurus Nal: |
land use; remote sensing. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/155926/1/Cnpgl-2016-RevCeres-Analysis.pdf
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Marc: |
LEADER 01944naa a2200205 a 4500
001 2064536
005 2023-01-30
008 2016 bl uuuu u00u1 u #d
100 1 $aANDRADE, R. G.
245 $aAnalysis of evapotranspiration and biomass in pastures with degradation indicatives in the Upper Tocantins River Basin, in Brazilian Savanna.$h[electronic resource]
260 $c2016
520 $aThe objective of this study was to apply the Simple Algorithm For Evapotranspiration Retrieving (SAFER) with MODIS images together with meteorological data to analyze evapotranspiration (ET) and biomass production (BIO) according to indicative classes of pasture degradation in Upper Tocantins River Basin. Indicative classes of degraded pastures were obtained from the NDVI time-series (2002-2012). To estimate ET and BIO in each class, MODIS images and data from meteorological stations of the year 2012 were used. The results show that compared to not-degraded pastures, ET and BIO were different in pastures with moderate to strong degradation, mainly during water stress period. Therefore, changes in energy balance partition may occur according to the degradation levels, considering that those indicatives of degradation processes were identified in 24% of the planted pasture areas. In this context, ET and BIO estimates using remote sensing techniques can be a reliable indicator of forage availability, and large-scale aspects related to the degradation of pastures. It is expected that this knowledge may contribute to initiatives of public policies aimed at controlling the loss of production potential of pasture areas in the Upper Tocantins River Basin in the state of Goiás, Brazil.
650 $aland use
650 $aremote sensing
653 $aDegraded pastures
653 $aSAFER
700 1 $aTEIXEIRA, A. H. de C.
700 1 $aLEIVAS, J. F.
700 1 $aNOGUEIRA, S. F.
773 $tRevista Ceres$gv. 63, n. 6, p. 754-760, 2016.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
02/08/2007 |
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Data da última atualização: |
18/03/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - B |
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Autoria: |
ELLIOTT, G. N.; CHEN, W. -M.; CHOU, J. -H.; WANG, H. -C.; SHEU, S. -Y.; PERIN, L.; REIS, V. M.; MOULIN, L.; SIMON, M. F.; BONTEMPS, C.; SUTHERLAND, J. M.; BESSI, R.; FARIA, S. M. de; TRINICK, M. J.; PRESCOTT, A. R.; SPRENT, J. I.; JAMES, E. K. |
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Título: |
Burkholderia phymatum is a highly effective nitrogen-fixing symbiont of Mimosa spp. and fixes nitrogen ex planta. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
New Phytologist, Oxford, v. 173, n. 1, p. 168-180, jan. 2007. |
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Idioma: |
Inglês |
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Notas: |
Parceria: Universidade de Dundee, Universidade National Kaohsiung Marine/Taiwan, Laboratorio de Simbiose Tropical/IRD/CIRAD/INRA/AGROM/UMII, Embrapa Sede, Universidade York |
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Conteúdo: |
The ability of Burkholderia phymatum STM815 to effectively nodulate Mimosa spp., and to fix nitrogen ex planta, was compared with that of the known Mimosa symbiont Cupriavidus taiwanensis LMG19424. Both strains were equally effective symbionts of M. pudica, but nodules formed by STM815 had greater nitrogenase activity. STM815 was shown to have a broader host range across the genus Mimosa than LMG19424, nodulating 30 out of 31 species, 21 of these effectively. LMG19424 effectively nodulated only nine species. GFP-marked variants were used to visualise symbiont presence within nodules. STM815 gave significant acetylene reduction assay (ARA) activity in semisolid JMV medium ex planta, but no ARA activity was detected with LMG19424. 16S rDNA sequences of two isolates originally from Mimosa nodules in Papua New Guinea (NGR114 and NGR195A) identified them as Burkholderia phymatum also, with nodA, nodC and nifH genes of NGR195A identical to those of STM815. B. phymatum is therefore an effective Mimosa symbiont with a broad host range, and is the first reported beta-rhizobial strain to fix nitrogen in free-living culture. |
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Palavras-Chave: |
Burkholderia phymatum; FBN; Fixação biológica de nitrogênio; Mimosa spp. |
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Thesagro: |
Nodulação. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02353naa a2200385 a 4500
001 1629239
005 2015-03-18
008 2007 bl --- 0-- u #d
100 1 $aELLIOTT, G. N.
245 $aBurkholderia phymatum is a highly effective nitrogen-fixing symbiont of Mimosa spp. and fixes nitrogen ex planta.
260 $c2007
500 $aParceria: Universidade de Dundee, Universidade National Kaohsiung Marine/Taiwan, Laboratorio de Simbiose Tropical/IRD/CIRAD/INRA/AGROM/UMII, Embrapa Sede, Universidade York
520 $aThe ability of Burkholderia phymatum STM815 to effectively nodulate Mimosa spp., and to fix nitrogen ex planta, was compared with that of the known Mimosa symbiont Cupriavidus taiwanensis LMG19424. Both strains were equally effective symbionts of M. pudica, but nodules formed by STM815 had greater nitrogenase activity. STM815 was shown to have a broader host range across the genus Mimosa than LMG19424, nodulating 30 out of 31 species, 21 of these effectively. LMG19424 effectively nodulated only nine species. GFP-marked variants were used to visualise symbiont presence within nodules. STM815 gave significant acetylene reduction assay (ARA) activity in semisolid JMV medium ex planta, but no ARA activity was detected with LMG19424. 16S rDNA sequences of two isolates originally from Mimosa nodules in Papua New Guinea (NGR114 and NGR195A) identified them as Burkholderia phymatum also, with nodA, nodC and nifH genes of NGR195A identical to those of STM815. B. phymatum is therefore an effective Mimosa symbiont with a broad host range, and is the first reported beta-rhizobial strain to fix nitrogen in free-living culture.
650 $aNodulação
653 $aBurkholderia phymatum
653 $aFBN
653 $aFixação biológica de nitrogênio
653 $aMimosa spp
700 1 $aCHEN, W. -M.
700 1 $aCHOU, J. -H.
700 1 $aWANG, H. -C.
700 1 $aSHEU, S. -Y.
700 1 $aPERIN, L.
700 1 $aREIS, V. M.
700 1 $aMOULIN, L.
700 1 $aSIMON, M. F.
700 1 $aBONTEMPS, C.
700 1 $aSUTHERLAND, J. M.
700 1 $aBESSI, R.
700 1 $aFARIA, S. M. de
700 1 $aTRINICK, M. J.
700 1 $aPRESCOTT, A. R.
700 1 $aSPRENT, J. I.
700 1 $aJAMES, E. K.
773 $tNew Phytologist, Oxford$gv. 173, n. 1, p. 168-180, jan. 2007.
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Embrapa Agrobiologia (CNPAB) |
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