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1. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | MACEDO, H. de A.; STEVAUX, J. C.; SILVA, A.; MERINO, E. R.; PUPIM, F. do N.; BERGIER, I. Distribuição e classificação da intensidade do fenômeno de dequada no Pantanal. In: SIMPÓSIO DE GEOTECNOLOGIAS NO PANTANAL, 5., 2014, Campo Grande, MS. Anais... São José dos Campos: INPE, 2014. p. 720-730 Biblioteca(s): Embrapa Pantanal. |
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2. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | MACEDO, H. de A.; STEVAUX, J. C.; SILVA, A.; MERINO, E. R.; PUPIM, F. do N.; BERGIER, I. Methodology for analysis of distribution and classification of the intensity of dequada fish kill events in the Pantanal wewtland. GEOGRAFIA, Rio Claro, v. 40, Número Especial, p. 163-176, ago. 2015. Biblioteca(s): Embrapa Pantanal. |
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Registros recuperados : 2 | |
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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Pantanal. Para informações adicionais entre em contato com cpap.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Pantanal. |
Data corrente: |
08/12/2015 |
Data da última atualização: |
17/11/2016 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
MACEDO, H. de A.; STEVAUX, J. C.; SILVA, A.; MERINO, E. R.; PUPIM, F. do N.; BERGIER, I. |
Afiliação: |
HUDSON DE AZEVEDO MACEDO, UNESP; JOSÉ CÂNDIDO STEVAUX, UNESP; AGUINALDO SILVA, UFMS; EDER RENATO MERINO, UNESP; FABIANO DO NASCIMENTO PUPIM, USP; IVAN BERGIER TAVARES DE LIMA, CPAP. |
Título: |
Methodology for analysis of distribution and classification of the intensity of dequada fish kill events in the Pantanal wewtland. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
GEOGRAFIA, Rio Claro, v. 40, Número Especial, p. 163-176, ago. 2015. |
Idioma: |
Inglês |
Conteúdo: |
Extensive fish mortality occurs occasionally in the Pantanal wetland and the phenomenon is called dequada by local inhabitants. The phenomenon originates by deterioration water quality in rivers and lakes, and the depletion of dissolved oxygen (DO) is the major indicator. Researches have shown that dequada occurs when DO reaches values lower than 3 mg/L. In addition, the duration of these low DO values determines the intensity of fish mortality. This paper presents a proposed classification of dequada event, using water quality data for Pantanal rivers surveyed by National Agency of Water (ANA). The proposed method has qualitative and quantitative bases and utilizes mean DO value and duration of these values, based on historical series of DO measurements. The results are compared to other studies of the dequada phenomenon, showing that the method is efficient to determine locales with higher probability of dequada. The Paraguay River has displayed highest dequada intensity. The rivers with narrower floodplains, such as Piquiri River, do not have dequada or the intensity is lower. The phenomenon is shown to be linked to basin hydrological conditions. |
Palavras-Chave: |
Depleção do oxigênio; Dequada; Oxygen depletion. |
Thesagro: |
Limnologia; Qualidade da Água. |
Thesaurus NAL: |
Limnology; Oxygen consumption; water quality. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 01990naa a2200277 a 4500 001 2030966 005 2016-11-17 008 2015 bl --- 0-- u #d 100 1 $aMACEDO, H. de A. 245 $aMethodology for analysis of distribution and classification of the intensity of dequada fish kill events in the Pantanal wewtland. 260 $c2015 520 $aExtensive fish mortality occurs occasionally in the Pantanal wetland and the phenomenon is called dequada by local inhabitants. The phenomenon originates by deterioration water quality in rivers and lakes, and the depletion of dissolved oxygen (DO) is the major indicator. Researches have shown that dequada occurs when DO reaches values lower than 3 mg/L. In addition, the duration of these low DO values determines the intensity of fish mortality. This paper presents a proposed classification of dequada event, using water quality data for Pantanal rivers surveyed by National Agency of Water (ANA). The proposed method has qualitative and quantitative bases and utilizes mean DO value and duration of these values, based on historical series of DO measurements. The results are compared to other studies of the dequada phenomenon, showing that the method is efficient to determine locales with higher probability of dequada. The Paraguay River has displayed highest dequada intensity. The rivers with narrower floodplains, such as Piquiri River, do not have dequada or the intensity is lower. The phenomenon is shown to be linked to basin hydrological conditions. 650 $aLimnology 650 $aOxygen consumption 650 $awater quality 650 $aLimnologia 650 $aQualidade da Água 653 $aDepleção do oxigênio 653 $aDequada 653 $aOxygen depletion 700 1 $aSTEVAUX, J. C. 700 1 $aSILVA, A. 700 1 $aMERINO, E. R. 700 1 $aPUPIM, F. do N. 700 1 $aBERGIER, I. 773 $tGEOGRAFIA, Rio Claro$gv. 40, Número Especial, p. 163-176, ago. 2015.
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