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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; Embrapa Territorial. |
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Data corrente: |
10/12/2020 |
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Data da última atualização: |
17/02/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, M. D. de; FANTIN-CRUZ, I.; CAMPOS, J. A.; CAMPOS, M. M. de; MINGOTI, R.; SOUZA, M. L. de; FIGUEIREDO, D. M. de; DORES, E. F. G. de C.; PEDROLLO, O.; HAMILTON, S. K. |
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Afiliação: |
MARCIA DIVINA DE OLIVEIRA, CPAP; IBRAIM FANTIN-CRUZ, Federal University of Mato Grosso, Cuiabá; JULIANA ANDRADE CAMPOS, Federal University of Rio Grande do Sul, Porto Alegre; MARCEL MEDINA DE CAMPOS, Federal University of Mato Grosso; RAFAEL MINGOTI, CNPM; MARCELO LUIZ DE SOUZA, Brazilian National Water Agency, Brasília. DF; DANIELA MAIMONI DE FIGUEIREDO, Federal University of Mato Grosso, Cuiabá; ELIANA FREIRE GASPAR DE CARVALHO DORES, Federal University of Mato Grosso, Cuiabá; OLAVO PEDROLLO, Federal University of Rio Grande do Sul; STEPHEN K. HAMILTON, Michigan State University. |
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Título: |
Further development of small hydropower facilities may alter nutrient transport to the Pantanal wetland of Brazil. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Frontiers in Environmental Science, v. 8, 577748, nov. 2020. |
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DOI: |
https://doi.org/10.3389/fenvs.2020.577793 |
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Idioma: |
Português |
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Conteúdo: |
Small hydropower (SHP) facilities, defined variably but usually by installed capacities of <10-50 MW, are proliferating around the world, particularly in tropical and subtropical regions. Compared to larger dams, SHPs are generally viewed as having less environmental impact, although there has been little research to support that assertion. Numerous SHPs have been built, and many more are in development or proposed, in rivers that drain into the Pantanal, a world-renowned floodplain wetland system located mostly in Brazil. The upland tributaries are important sources of nutrients to the Pantanal, affecting the biological productivity of downstream floodplains. This study presents measurements from upstream and downstream of 25 current hydropower facilities, most of which are SHPs, throughout the upland watersheds of the Upper Paraguay River basin to reveal how these facilities may affect the concentrations and transport of nutrients in rivers flowing to the Pantanal. Artificial neural network models estimated the impact of building 80 future SHPs on nutrient transport into the Pantanal, based on observations at current facilities as well as the spatial distribution of future facilities. Overall impacts of current hydropower facilities were not large, and in most cases were indistinguishable based on comparisons between upstream and downstream. The short water residence times of reservoirs associated with SHPs likely explain their tendency to have little or no effect on nutrient transport. However, model predictions for hydropower facilities that may be built in the future, many on rivers with higher discharge and sediment loads, point to significant reductions in overall TN (8%) and TP (29%) transport, with potential negative consequences for river and floodplain productivity. Negative impacts may be either because the rivers carry low nutrient concentrations and are thereby sensitive to oligotrophication, or they are particularly important overall nutrient sources supporting ecosystem productivity in downstream rivers and floodplains. Together with a parallel study of sediment transport, these results support recommendations that several river systems presently lacking dams in their lower reaches should be excluded from future hydropower development to maintain the nutrient and sediment supply to the Pantanal. MenosSmall hydropower (SHP) facilities, defined variably but usually by installed capacities of <10-50 MW, are proliferating around the world, particularly in tropical and subtropical regions. Compared to larger dams, SHPs are generally viewed as having less environmental impact, although there has been little research to support that assertion. Numerous SHPs have been built, and many more are in development or proposed, in rivers that drain into the Pantanal, a world-renowned floodplain wetland system located mostly in Brazil. The upland tributaries are important sources of nutrients to the Pantanal, affecting the biological productivity of downstream floodplains. This study presents measurements from upstream and downstream of 25 current hydropower facilities, most of which are SHPs, throughout the upland watersheds of the Upper Paraguay River basin to reveal how these facilities may affect the concentrations and transport of nutrients in rivers flowing to the Pantanal. Artificial neural network models estimated the impact of building 80 future SHPs on nutrient transport into the Pantanal, based on observations at current facilities as well as the spatial distribution of future facilities. Overall impacts of current hydropower facilities were not large, and in most cases were indistinguishable based on comparisons between upstream and downstream. The short water residence times of reservoirs associated with SHPs likely explain their tendency to have little or no effect on nutri... Mostrar Tudo |
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Thesagro: |
Barragem; Hidrelétrica; Preservação da Natureza. |
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Thesaurus Nal: |
Biopreservation; Dams (hydrology); Hydroelectric power. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 03332naa a2200313 a 4500
001 2127969
005 2022-02-17
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.3389/fenvs.2020.577793$2DOI
100 1 $aOLIVEIRA, M. D. de
245 $aFurther development of small hydropower facilities may alter nutrient transport to the Pantanal wetland of Brazil.$h[electronic resource]
260 $c2020
520 $aSmall hydropower (SHP) facilities, defined variably but usually by installed capacities of <10-50 MW, are proliferating around the world, particularly in tropical and subtropical regions. Compared to larger dams, SHPs are generally viewed as having less environmental impact, although there has been little research to support that assertion. Numerous SHPs have been built, and many more are in development or proposed, in rivers that drain into the Pantanal, a world-renowned floodplain wetland system located mostly in Brazil. The upland tributaries are important sources of nutrients to the Pantanal, affecting the biological productivity of downstream floodplains. This study presents measurements from upstream and downstream of 25 current hydropower facilities, most of which are SHPs, throughout the upland watersheds of the Upper Paraguay River basin to reveal how these facilities may affect the concentrations and transport of nutrients in rivers flowing to the Pantanal. Artificial neural network models estimated the impact of building 80 future SHPs on nutrient transport into the Pantanal, based on observations at current facilities as well as the spatial distribution of future facilities. Overall impacts of current hydropower facilities were not large, and in most cases were indistinguishable based on comparisons between upstream and downstream. The short water residence times of reservoirs associated with SHPs likely explain their tendency to have little or no effect on nutrient transport. However, model predictions for hydropower facilities that may be built in the future, many on rivers with higher discharge and sediment loads, point to significant reductions in overall TN (8%) and TP (29%) transport, with potential negative consequences for river and floodplain productivity. Negative impacts may be either because the rivers carry low nutrient concentrations and are thereby sensitive to oligotrophication, or they are particularly important overall nutrient sources supporting ecosystem productivity in downstream rivers and floodplains. Together with a parallel study of sediment transport, these results support recommendations that several river systems presently lacking dams in their lower reaches should be excluded from future hydropower development to maintain the nutrient and sediment supply to the Pantanal.
650 $aBiopreservation
650 $aDams (hydrology)
650 $aHydroelectric power
650 $aBarragem
650 $aHidrelétrica
650 $aPreservação da Natureza
700 1 $aFANTIN-CRUZ, I.
700 1 $aCAMPOS, J. A.
700 1 $aCAMPOS, M. M. de
700 1 $aMINGOTI, R.
700 1 $aSOUZA, M. L. de
700 1 $aFIGUEIREDO, D. M. de
700 1 $aDORES, E. F. G. de C.
700 1 $aPEDROLLO, O.
700 1 $aHAMILTON, S. K.
773 $tFrontiers in Environmental Science$gv. 8, 577748, nov. 2020.
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Registro original: |
Embrapa Pantanal (CPAP) |
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Biblioteca |
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Tipo/Formato |
Classificação |
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Registro |
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Status |
URL |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
11/12/2009 |
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Data da última atualização: |
25/02/2010 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
RODRIGUES, A. S.; BARBOSA, C. de J.; SANTOS, E. E. S.; SOARES FILHO, W. dos S.; ASTUA, J. de F. |
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Afiliação: |
Almir Santos Rodrigues, UFRB; CRISTIANE DE JESUS BARBOSA, CNPMF; Elder Euler Seixas dos Santos, UFRB; WALTER DOS SANTOS SOARES FILHO, CNPMF; JULIANA DE FREITAS ASTUA, CNPMF. |
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Título: |
Tolerância de porta-enxertos híbridos de citros ao Citrus tristeza virus e Bahia Bark Scaling disease. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Tropical Plant Pathology, Brasília, DF, v. 34, ago. 2009. Suplemento. |
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ISSN: |
1982-5676 |
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Idioma: |
Português |
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Notas: |
Edição dos Resumos do XLII Congresso Brasileiro de Fitopatologia, Rio de Janeiro, ago. 2009. Suplemento. Resumo 935. |
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Conteúdo: |
O programa de melhoramento genético de citros da Embrapa Mandioca e FruticulturaTropical vem gerando híbridos para utilização como porta-enxertos, que necessitam ser avaliados em relação ao comportamento frente à infecção natural por isolados locais de Citrus tristeza virus, CTV e a presença de sintomas de descamamento eruptivo (Bahia Bark Scaling disease, BBS). Este trabalho apresenta os resultados obtidos da avaliação do comportamento de 53 híbridos estabelecidos na área experimental da Embrapa, no Recôncavo Sul da Bahia. Foram avaliadas a presença e intensidade de sintomas de caneluras e descamamento através de escala de notas. Para a detecção do CTV nos tecidos dos porta-enxertos híbridos foram realizados testes de ELISA indireto, com antissoro policlonal contra o CTV e, também RT-PCRs para a confirmação dos resultados, utilizando-se dois pares de primers específicos, para os genes p23 e p20. Baseando-se na presença e intensidade de caneluras e nos resultados obtidos no ELISA indireto e RT-PCR, foi possível diagnosticar 09 híbridos provavelmente resistentes (imunes), 30 tolerantes e 11 tolerantes ao CTV. A maioria dos híbridos avaliados não apresentou sintomas de descamamento euptivo. |
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Thesagro: |
Doença de Planta. |
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Categoria do assunto: |
S Ciências Biológicas |
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Marc: |
LEADER 01971naa a2200205 a 4500
001 1656401
005 2010-02-25
008 2009 bl uuuu u00u1 u #d
022 $a1982-5676
100 1 $aRODRIGUES, A. S.
245 $aTolerância de porta-enxertos híbridos de citros ao Citrus tristeza virus e Bahia Bark Scaling disease.
260 $c2009
500 $aEdição dos Resumos do XLII Congresso Brasileiro de Fitopatologia, Rio de Janeiro, ago. 2009. Suplemento. Resumo 935.
520 $aO programa de melhoramento genético de citros da Embrapa Mandioca e FruticulturaTropical vem gerando híbridos para utilização como porta-enxertos, que necessitam ser avaliados em relação ao comportamento frente à infecção natural por isolados locais de Citrus tristeza virus, CTV e a presença de sintomas de descamamento eruptivo (Bahia Bark Scaling disease, BBS). Este trabalho apresenta os resultados obtidos da avaliação do comportamento de 53 híbridos estabelecidos na área experimental da Embrapa, no Recôncavo Sul da Bahia. Foram avaliadas a presença e intensidade de sintomas de caneluras e descamamento através de escala de notas. Para a detecção do CTV nos tecidos dos porta-enxertos híbridos foram realizados testes de ELISA indireto, com antissoro policlonal contra o CTV e, também RT-PCRs para a confirmação dos resultados, utilizando-se dois pares de primers específicos, para os genes p23 e p20. Baseando-se na presença e intensidade de caneluras e nos resultados obtidos no ELISA indireto e RT-PCR, foi possível diagnosticar 09 híbridos provavelmente resistentes (imunes), 30 tolerantes e 11 tolerantes ao CTV. A maioria dos híbridos avaliados não apresentou sintomas de descamamento euptivo.
650 $aDoença de Planta
700 1 $aBARBOSA, C. de J.
700 1 $aSANTOS, E. E. S.
700 1 $aSOARES FILHO, W. dos S.
700 1 $aASTUA, J. de F.
773 $tTropical Plant Pathology, Brasília, DF$gv. 34, ago. 2009. Suplemento.
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Embrapa Mandioca e Fruticultura (CNPMF) |
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