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Registro Completo |
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
21/01/2015 |
Data da última atualização: |
23/02/2015 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
FIGUEIREDO, R. de O.; BARROSO, D. F. R.; PIRES, C. S.; COSTA, F. |
Afiliação: |
RICARDO DE OLIVEIRA FIGUEIREDO, CNPMA; DANIEL F R BARROSO; CAMILA S PIRES; FABIOLA COSTA. |
Título: |
Hydrobiogeochemical fluxes and its relation to land use changes at small catchments in the Marapanim River Basin, Pará state, Brazil. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
In: International SWAT Conference, 2014, Porto de Galinhas. Book of Abstracts... Porto de Galinhas: USDA Agricultural Research Service (USDA-ARS), 2014. |
Páginas: |
p. 138. |
Idioma: |
Inglês |
Conteúdo: |
Abstract; The macro region "Nordeste Paraense" in Pará state is the oldest agricultural settlement area in the Eastern Brazilian Amazon and has been the location of widespread slash-and-burn agriculture for many years. We studied the biogeochemical changes of nine small catchments (~20-140 ha drainage areas) in the Marapanim River Basin: seven agricultural catchments and two remnant forest catchments used as references for the original landscape. Smallholder agriculture (cassava, corn, cowpea, pepper and passion fruit) is the dominant type of land use in these catchments, along with several medium-sized cattle ranches. Together, these uses form a land use mosaic that also includes large areas of fallow vegetation. Primary forests are rare and frequently restricted only to riparian zones. Each month over the period of one hydrological year, we measured instantaneous discharge and dissolved anions and cations, as well as pH, electric conductivity (EC), temperature, and dissolved oxygen (DO) in stream water of each catchment. The greatest change in biogeochemistry occurred in a stream draining an area of abundant pasture and no riparian forest, including decreases in DO and nitrate and increases in ammonium, pH, and EC. The collection site for this stream also was near an area where cattle frequently entered the stream to drink water. Moreover, large biogeochemical changes were found in a stream that had a slash-and-burn agricultural system for cassava near the stream, including decreases in DO and increases in calcium, magnesium, and potassium concentrations. In this region, riparian forest conservation can be an important management tool for mitigating land use change effects on water quality, together with agricultural conservation practices that avoid the use of fire to clear land for crops and pasture. MenosAbstract; The macro region "Nordeste Paraense" in Pará state is the oldest agricultural settlement area in the Eastern Brazilian Amazon and has been the location of widespread slash-and-burn agriculture for many years. We studied the biogeochemical changes of nine small catchments (~20-140 ha drainage areas) in the Marapanim River Basin: seven agricultural catchments and two remnant forest catchments used as references for the original landscape. Smallholder agriculture (cassava, corn, cowpea, pepper and passion fruit) is the dominant type of land use in these catchments, along with several medium-sized cattle ranches. Together, these uses form a land use mosaic that also includes large areas of fallow vegetation. Primary forests are rare and frequently restricted only to riparian zones. Each month over the period of one hydrological year, we measured instantaneous discharge and dissolved anions and cations, as well as pH, electric conductivity (EC), temperature, and dissolved oxygen (DO) in stream water of each catchment. The greatest change in biogeochemistry occurred in a stream draining an area of abundant pasture and no riparian forest, including decreases in DO and nitrate and increases in ammonium, pH, and EC. The collection site for this stream also was near an area where cattle frequently entered the stream to drink water. Moreover, large biogeochemical changes were found in a stream that had a slash-and-burn agricultural system for cassava near the stream, includin... Mostrar Tudo |
Palavras-Chave: |
Fluvial hydrochemistry. |
Thesagro: |
Agricultura; Qualidade da água; Uso da terra. |
Thesaurus Nal: |
agriculture; Amazonia; Biogeochemical cycles; Land use; nutrients; water quality. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/116180/1/2014AA13.zip
|
Marc: |
LEADER 02770nam a2200277 a 4500 001 2006348 005 2015-02-23 008 2014 bl uuuu u00u1 u #d 100 1 $aFIGUEIREDO, R. de O. 245 $aHydrobiogeochemical fluxes and its relation to land use changes at small catchments in the Marapanim River Basin, Pará state, Brazil.$h[electronic resource] 260 $aIn: International SWAT Conference, 2014, Porto de Galinhas. Book of Abstracts... Porto de Galinhas: USDA Agricultural Research Service (USDA-ARS)$c2014 300 $ap. 138. 520 $aAbstract; The macro region "Nordeste Paraense" in Pará state is the oldest agricultural settlement area in the Eastern Brazilian Amazon and has been the location of widespread slash-and-burn agriculture for many years. We studied the biogeochemical changes of nine small catchments (~20-140 ha drainage areas) in the Marapanim River Basin: seven agricultural catchments and two remnant forest catchments used as references for the original landscape. Smallholder agriculture (cassava, corn, cowpea, pepper and passion fruit) is the dominant type of land use in these catchments, along with several medium-sized cattle ranches. Together, these uses form a land use mosaic that also includes large areas of fallow vegetation. Primary forests are rare and frequently restricted only to riparian zones. Each month over the period of one hydrological year, we measured instantaneous discharge and dissolved anions and cations, as well as pH, electric conductivity (EC), temperature, and dissolved oxygen (DO) in stream water of each catchment. The greatest change in biogeochemistry occurred in a stream draining an area of abundant pasture and no riparian forest, including decreases in DO and nitrate and increases in ammonium, pH, and EC. The collection site for this stream also was near an area where cattle frequently entered the stream to drink water. Moreover, large biogeochemical changes were found in a stream that had a slash-and-burn agricultural system for cassava near the stream, including decreases in DO and increases in calcium, magnesium, and potassium concentrations. In this region, riparian forest conservation can be an important management tool for mitigating land use change effects on water quality, together with agricultural conservation practices that avoid the use of fire to clear land for crops and pasture. 650 $aagriculture 650 $aAmazonia 650 $aBiogeochemical cycles 650 $aLand use 650 $anutrients 650 $awater quality 650 $aAgricultura 650 $aQualidade da água 650 $aUso da terra 653 $aFluvial hydrochemistry 700 1 $aBARROSO, D. F. R. 700 1 $aPIRES, C. S. 700 1 $aCOSTA, F.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Registros recuperados : 525 | |
62. | | MORAES, M. C. B.; LAUMANN, R.; SUJII, E. R.; PIRES, C.; BORGES, M. Induced volatiles in soybean and pigeon pea plants artificially infested with the neotropical brown stink bug, Euchistus heros, and their effect on the egg parasitoid, Telenomus podisi. Entomologia Experimentalis et Applicata, v. 115, n. 1, p. 227-237, 2005.Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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65. | | SUJII, E. R.; COSTA, M. L. M.; PIRES, C. S. S.; COLAZZA, S.; BORGES, M. Inter and intra-guild interactions in egg parasitoid species of the soybean stink bug complex. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 37, n. 11, p. 1541-1549, nov. 2002 Título em português: Interações inter-guilda e intra-guilda entre espécies de parasitóides de ovos que atacam o complexo de percevejos da soja.Biblioteca(s): Embrapa Unidades Centrais. |
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66. | | PAULA, D. P.; ANDOW, D. A.; PIRES, C. S. S.; SUJII, E. R. Impacto da introdução de pragas sobre a biodiversidade. In: SUGAYAMA, R. L.; SILVA, M. L. da; SILVA, S. X. de B.; RIBEIRO, L. C.; RANGEL, L. E. P. (Ed.). Defesa vegetal: fundamentos, ferramentas, políticas e perspectivas Belo Horizonte: SBDA - Sociedade Brasileira de Defesa Agropecuária, 2015. p. 79-101.Tipo: Capítulo em Livro Técnico-Científico |
Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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71. | | GALVANI, D. B.; PIRES, C. C.; HÜBNER, C. H.; CARVALHO, S.; WOMMER, T. P. Growth performance and carcass traits of early-weaned lambs as affected by the nutritional regimen of lactating ewes. Small Ruminant Research, Amsterdam, v. 120, n. 1, p. 1-5, Jul. 2014.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
Biblioteca(s): Embrapa Caprinos e Ovinos. |
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74. | | MACEDO, T. R.; JEGER, C.; SUJII, E. R.; PIRES, C. S. S.; FONTES, E. M. G. Desempenho de Cycloneda sanguinea (Coleoptera: Coccinelidae) quando alimentada com Uroleucon ambrosiae (Hemiptera: Aphididae). In: ENCONTRO DO TALENTO ESTUDANTIL DA EMBRAPA RECURSOS GENÉTICOS E BIOTECNOLOGIA, 11., 2006, Brasília, DF. Anais: resumos dos trabalhos. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2006. p. 130.Tipo: Resumo em Anais de Congresso | Circulação/Nível: -- - -- |
Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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77. | | TOREZANI, K.; LAUMANN, R.; NORONHA, S. E. de; SUJII, E.; PIRES, C. Diversidade de abelhas em cultura de aboboreira Cucurbita Pepo L. no Distrito Federal: influência do sistema de produção e da paisagem agrícola. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 4., 2016, Curitiba. Recursos genéticos no Brasil: a base para o desenvolvimento sustentável: anais. Brasília, DF: Sociedade Brasileira de Recursos Genéticos, 2016.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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80. | | CARVALHO, R. M. V.; PIRES, C.; SCHMIDT, F.; LAUMANN, R. A. E.; SUJII, E. Ecologia de populações de crisomelídeos-praga aplicada ao uso de semioquímicos. In: ENCONTRO DO TALENTO ESTUDANTIL DA EMBRAPA RECURSOS GENÉTICOS E BIOTECNOLOGIA, 7., 2002, Brasília, DF. Anais: resumos dos trabalhos. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2002. P. 92.Tipo: Resumo em Anais de Congresso | Circulação/Nível: -- - -- |
Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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Registros recuperados : 525 | |
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