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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
17/11/2016 |
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Data da última atualização: |
17/07/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ZEILHOFER, P.; CALHEIROS, D. F.; OLIVEIRA, M. D. de; DORES, E. F. G. de C.; LIMA, G. A. R.; FANTIN-CRUZ, I. |
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Afiliação: |
PETER ZEILHOFER, Universidade Federal de Mato Grosso; DEBORA FERNANDES CALHEIROS, DGP; MARCIA DIVINA DE OLIVEIRA, CPAP; ELIANA FREIRE GASPAR DE CARVALHO DORES, Universidade Federal de Mato Grosso; GILSON ALBERTO ROSA LIMA, Universidade Federal de Mato Grosso; IBRAIM FANTIN-CRUZ, Universidade Federal de Mato Grosso. |
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Título: |
Temporal patterns of water quality in the Pantanal floodplain and its contributing Cerrado upland rivers: implications for the interpretation of freshwater integrity. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Wetlands Ecology and Management, v. 24, n. 6, p. 697-716, 2016. |
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DOI: |
10.1007/s11273-016-9497-8 |
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Idioma: |
Inglês |
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Conteúdo: |
Water quality time series available for major tropical floodplains commonly have low temporal resolutions and irregular sampling frequencies. Here we examine such data using singular spectrum analysis, a non-parametric time series analysis technique, to assess the typical cyclical variations and long-term trends in upland Cerrado and lowland floodplain reaches of three rivers that are tributaries to the Pantanal in Brazil to evaluate ecological state and impact level, and develop recommendations for improved monitoring of Cerrado?Pantanal river systems. Both upland and lowland reaches have their average water quality cycles linked to a monocyclical hydrological regime. Amplitudes of nutrient concentrations (N, P) and Turbidity are higher in the uplands, whereas cyclical oxygen variations are up to two times higher in the floodplain reaches. SSA showed that trend extraction is possible for parameters with lower intra-annual variations and were found to be partially opposing (oxygen) in upland (negative trend) and floodplain (positive trend) stations. Land use intensification in the uplands is reflected by N concentrations in upland reaches. In the floodplain, the Paraguay river was found under a slight TN enrichment regime of about 0.02 mg L−1 per year between 1995 and 2009. Assuming a fixed budget for institutional water quality monitoring, we recommend a reduction of the 150 registered sampling gauges by environmental agencies in the Brazilian Pantanal and its contribution area, 95 % of them with less than four samples per year, in favor of using the same resources for increased sampling frequency at a smaller number of sites. MenosWater quality time series available for major tropical floodplains commonly have low temporal resolutions and irregular sampling frequencies. Here we examine such data using singular spectrum analysis, a non-parametric time series analysis technique, to assess the typical cyclical variations and long-term trends in upland Cerrado and lowland floodplain reaches of three rivers that are tributaries to the Pantanal in Brazil to evaluate ecological state and impact level, and develop recommendations for improved monitoring of Cerrado?Pantanal river systems. Both upland and lowland reaches have their average water quality cycles linked to a monocyclical hydrological regime. Amplitudes of nutrient concentrations (N, P) and Turbidity are higher in the uplands, whereas cyclical oxygen variations are up to two times higher in the floodplain reaches. SSA showed that trend extraction is possible for parameters with lower intra-annual variations and were found to be partially opposing (oxygen) in upland (negative trend) and floodplain (positive trend) stations. Land use intensification in the uplands is reflected by N concentrations in upland reaches. In the floodplain, the Paraguay river was found under a slight TN enrichment regime of about 0.02 mg L−1 per year between 1995 and 2009. Assuming a fixed budget for institutional water quality monitoring, we recommend a reduction of the 150 registered sampling gauges by environmental agencies in the Brazilian Pantanal and its contrib... Mostrar Tudo |
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Palavras-Chave: |
Rio Paraguai. |
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Thesagro: |
Qualidade da água; Rio. |
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Thesaurus Nal: |
Paraguay River; water quality; Water quality analysis. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02514naa a2200265 a 4500
001 2056480
005 2017-07-17
008 2016 bl uuuu u00u1 u #d
024 7 $a10.1007/s11273-016-9497-8$2DOI
100 1 $aZEILHOFER, P.
245 $aTemporal patterns of water quality in the Pantanal floodplain and its contributing Cerrado upland rivers$bimplications for the interpretation of freshwater integrity.
260 $c2016
520 $aWater quality time series available for major tropical floodplains commonly have low temporal resolutions and irregular sampling frequencies. Here we examine such data using singular spectrum analysis, a non-parametric time series analysis technique, to assess the typical cyclical variations and long-term trends in upland Cerrado and lowland floodplain reaches of three rivers that are tributaries to the Pantanal in Brazil to evaluate ecological state and impact level, and develop recommendations for improved monitoring of Cerrado?Pantanal river systems. Both upland and lowland reaches have their average water quality cycles linked to a monocyclical hydrological regime. Amplitudes of nutrient concentrations (N, P) and Turbidity are higher in the uplands, whereas cyclical oxygen variations are up to two times higher in the floodplain reaches. SSA showed that trend extraction is possible for parameters with lower intra-annual variations and were found to be partially opposing (oxygen) in upland (negative trend) and floodplain (positive trend) stations. Land use intensification in the uplands is reflected by N concentrations in upland reaches. In the floodplain, the Paraguay river was found under a slight TN enrichment regime of about 0.02 mg L−1 per year between 1995 and 2009. Assuming a fixed budget for institutional water quality monitoring, we recommend a reduction of the 150 registered sampling gauges by environmental agencies in the Brazilian Pantanal and its contribution area, 95 % of them with less than four samples per year, in favor of using the same resources for increased sampling frequency at a smaller number of sites.
650 $aParaguay River
650 $awater quality
650 $aWater quality analysis
650 $aQualidade da água
650 $aRio
653 $aRio Paraguai
700 1 $aCALHEIROS, D. F.
700 1 $aOLIVEIRA, M. D. de
700 1 $aDORES, E. F. G. de C.
700 1 $aLIMA, G. A. R.
700 1 $aFANTIN-CRUZ, I.
773 $tWetlands Ecology and Management$gv. 24, n. 6, p. 697-716, 2016.
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Registro original: |
Embrapa Pantanal (CPAP) |
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Biblioteca |
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Origem |
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Cutter |
Registro |
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URL |
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Registro Completo
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
13/01/2023 |
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Data da última atualização: |
27/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 4 |
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Autoria: |
GALON, L.; KONZEN, A.; PIAZZETTA, H. VON L.; CONCENÇO, G.; ANDRÉ, M.; BAGNARA, M.; SILVA, A. M. L. DA; PERIN, G. F. |
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Afiliação: |
LEANDRO GALON, UNIVERSIDADE FEDERAL DA FRONTEIRA SUL; ALESSANDRO KONZEN; HUGO VON LINSINGEN PIAZZETTA; GERMANI CONCENCO, CPACT; MAICO ANDRÉ; MICHELON BAGNARA; ANTONIO MARCOS LOUREIRO DA SILVA; GISMAEL FRANCISCO PERIN. |
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Título: |
Periods of interference of Alexandergrass on morphophysiological and productive characteristics of transgenic soybean. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Communications in Plant Science, v. 12, p. 60-66, 2022. |
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ISSN: |
2237-4027 |
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Idioma: |
Inglês |
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Conteúdo: |
Among the weed species infesting soybean, Alexandergrass (Urochloa plantaginea) is highlighted as one of the most competitive. The objective of this work was to determine the periods of interference of Alexandergrass, and is effects, on morphophysiology and yield components of soybean. Treatments were pooled into two groups: the group ?convivence? comprised soybean growing among Alexandergrass for increasing periods: 0, 7, 14, 21, 28, 35 and 42 days after emergence (DAE), as well as along all the crop cycle. The ?control? group comprised soybean free from competition for the same time lapses. Forty-two DAE, soybean morphophysiology was assessed. There was no effect of the time lpse of Alexandergrass "control" or "convivence" on soybean physiological performance. Plant height, stem diameter, plant dry mass, leaf area and grain yield components of soybean were, however, affected by Alexandergrass. The critical period of interference prevention comprises 26-41 DAE; the period prior to interference is 26 DAE; and the total period of interference prevention is 41 DAE. |
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Palavras-Chave: |
Urochloa plantaginea. |
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Thesagro: |
Erva Daninha; Soja. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1150983/1/Art-GC-2022-09.pdf
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Marc: |
LEADER 01821naa a2200253 a 4500
001 2150983
005 2023-03-27
008 2022 bl uuuu u00u1 u #d
022 $a2237-4027
100 1 $aGALON, L.
245 $aPeriods of interference of Alexandergrass on morphophysiological and productive characteristics of transgenic soybean.$h[electronic resource]
260 $c2022
520 $aAmong the weed species infesting soybean, Alexandergrass (Urochloa plantaginea) is highlighted as one of the most competitive. The objective of this work was to determine the periods of interference of Alexandergrass, and is effects, on morphophysiology and yield components of soybean. Treatments were pooled into two groups: the group ?convivence? comprised soybean growing among Alexandergrass for increasing periods: 0, 7, 14, 21, 28, 35 and 42 days after emergence (DAE), as well as along all the crop cycle. The ?control? group comprised soybean free from competition for the same time lapses. Forty-two DAE, soybean morphophysiology was assessed. There was no effect of the time lpse of Alexandergrass "control" or "convivence" on soybean physiological performance. Plant height, stem diameter, plant dry mass, leaf area and grain yield components of soybean were, however, affected by Alexandergrass. The critical period of interference prevention comprises 26-41 DAE; the period prior to interference is 26 DAE; and the total period of interference prevention is 41 DAE.
650 $aErva Daninha
650 $aSoja
653 $aUrochloa plantaginea
700 1 $aKONZEN, A.
700 1 $aPIAZZETTA, H. VON L.
700 1 $aCONCENÇO, G.
700 1 $aANDRÉ, M.
700 1 $aBAGNARA, M.
700 1 $aSILVA, A. M. L. DA
700 1 $aPERIN, G. F.
773 $tCommunications in Plant Science$gv. 12, p. 60-66, 2022.
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Embrapa Clima Temperado (CPACT) |
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