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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
18/12/2009 |
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Data da última atualização: |
08/06/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
NEILL, C.; ELSENBEER, H.; KRUSCHE, A. V.; LEHMANN, J.; MARKEWITZ, D.; FIGUEIREDO, R. de O. |
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Afiliação: |
CHRISTOPHER NEILL, The Ecosystems Center, Marine Biological Laboratory, Woods Hole; HELMUT ELSENBEER, University of Potsdam; ALEX V. KRUSCHE, CENA/USP; JOHANNES LEHMANN, Cornell University; DANIEL MARKEWITZ, University of Georgia; RICARDO DE OLIVEIRA FIGUEIREDO, CPATU. |
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Título: |
Hydrological and biogeochemical processes in a changing Amazon: results from small watershed studies and the large-scale biosphere-atmosphere experiment. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
Hydrological Processes, v. 20, n. 12, p. 2467-2476, Aug. 2006. |
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DOI: |
10.1002/hyp.6210 |
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Idioma: |
Inglês |
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Conteúdo: |
The Amazon Basin is the world?s largest tropical forest region and one where rapid human changes to land cover have the potential to cause signi?cant changes to hydrological and biogeochemical processes. The Large-Scale BiosphereAtmosphere Experiment in Amazonia (LBA) is a multidisciplinary, multinational research program led by Brazil. The goal of LBA is to understand how the Amazon Basin functions as a regional entity in the earth system and how these functions are changing as a result of ongoing human activity. This compilation of nine papers focuses on a central LBA question in the area of nutrient dynamics and surface water chemistry?how do changes in land use alter ?uxes of dissolved and particulate materials from uplands across riparian zones and down the channels of river corridors? These papers cover work conducted in small watersheds on a wide range of topics within the spirit and geographical focus area of LBA: water balance and runoff generation, nutrient transformations in riparian zones and stream channels, carbon ?uxes in water moving from land to water and the in?uence of soils on ?owpath structure and stream chemistry. Important new insights can be gained from these and other studies. Forest clearing for pastures results in a decrease in soil hydraulic conductivity that forces water into sur?cial ?owpaths throughout most of the rainy season across wide regions of the Amazon. Riparian zones along small forest streams appear to be very effective in removing nitrate arriving from the uplands, while forest streams take up nitrate at very low rates, allowing them to travel downstream for long distances. Although substantial, the contribution of dissolved organic C (DOC) to the carbon ?ux from forests to streams appears to be lower than the ?ux of dissolved inorganic C that is subsequently outgassed as CO2. Remaining key challenges within LBA will be to synthesize existing data sets on river networks, soils, climate, land use and planned infrastructure for the Amazon to develop models capable of predicting hydrologic and biogeochemical ?uxes at a variety of scales relevant to the development of strategies for sustainable management of the Amazon?s remarkable forest, soil and freshwater resources. MenosThe Amazon Basin is the world?s largest tropical forest region and one where rapid human changes to land cover have the potential to cause signi?cant changes to hydrological and biogeochemical processes. The Large-Scale BiosphereAtmosphere Experiment in Amazonia (LBA) is a multidisciplinary, multinational research program led by Brazil. The goal of LBA is to understand how the Amazon Basin functions as a regional entity in the earth system and how these functions are changing as a result of ongoing human activity. This compilation of nine papers focuses on a central LBA question in the area of nutrient dynamics and surface water chemistry?how do changes in land use alter ?uxes of dissolved and particulate materials from uplands across riparian zones and down the channels of river corridors? These papers cover work conducted in small watersheds on a wide range of topics within the spirit and geographical focus area of LBA: water balance and runoff generation, nutrient transformations in riparian zones and stream channels, carbon ?uxes in water moving from land to water and the in?uence of soils on ?owpath structure and stream chemistry. Important new insights can be gained from these and other studies. Forest clearing for pastures results in a decrease in soil hydraulic conductivity that forces water into sur?cial ?owpaths throughout most of the rainy season across wide regions of the Amazon. Riparian zones along small forest streams appear to be very effective in removing ni... Mostrar Tudo |
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Palavras-Chave: |
Stream chemistry. |
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Thesaurus Nal: |
water balance. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02961naa a2200217 a 4500
001 1578387
005 2022-06-08
008 2006 bl uuuu u00u1 u #d
024 7 $a10.1002/hyp.6210$2DOI
100 1 $aNEILL, C.
245 $aHydrological and biogeochemical processes in a changing Amazon$bresults from small watershed studies and the large-scale biosphere-atmosphere experiment.$h[electronic resource]
260 $c2006
520 $aThe Amazon Basin is the world?s largest tropical forest region and one where rapid human changes to land cover have the potential to cause signi?cant changes to hydrological and biogeochemical processes. The Large-Scale BiosphereAtmosphere Experiment in Amazonia (LBA) is a multidisciplinary, multinational research program led by Brazil. The goal of LBA is to understand how the Amazon Basin functions as a regional entity in the earth system and how these functions are changing as a result of ongoing human activity. This compilation of nine papers focuses on a central LBA question in the area of nutrient dynamics and surface water chemistry?how do changes in land use alter ?uxes of dissolved and particulate materials from uplands across riparian zones and down the channels of river corridors? These papers cover work conducted in small watersheds on a wide range of topics within the spirit and geographical focus area of LBA: water balance and runoff generation, nutrient transformations in riparian zones and stream channels, carbon ?uxes in water moving from land to water and the in?uence of soils on ?owpath structure and stream chemistry. Important new insights can be gained from these and other studies. Forest clearing for pastures results in a decrease in soil hydraulic conductivity that forces water into sur?cial ?owpaths throughout most of the rainy season across wide regions of the Amazon. Riparian zones along small forest streams appear to be very effective in removing nitrate arriving from the uplands, while forest streams take up nitrate at very low rates, allowing them to travel downstream for long distances. Although substantial, the contribution of dissolved organic C (DOC) to the carbon ?ux from forests to streams appears to be lower than the ?ux of dissolved inorganic C that is subsequently outgassed as CO2. Remaining key challenges within LBA will be to synthesize existing data sets on river networks, soils, climate, land use and planned infrastructure for the Amazon to develop models capable of predicting hydrologic and biogeochemical ?uxes at a variety of scales relevant to the development of strategies for sustainable management of the Amazon?s remarkable forest, soil and freshwater resources.
650 $awater balance
653 $aStream chemistry
700 1 $aELSENBEER, H.
700 1 $aKRUSCHE, A. V.
700 1 $aLEHMANN, J.
700 1 $aMARKEWITZ, D.
700 1 $aFIGUEIREDO, R. de O.
773 $tHydrological Processes$gv. 20, n. 12, p. 2467-2476, Aug. 2006.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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| Registros recuperados : 96 | |
| 65. |  | DINKELMEYER, H.; LEHMANN, J.; KAISER, K.; TEIXEIRA, W. G.; RENCK, A.; ZECH, W. Fate of applied N fertilizer in mixed cropping systems in the central Amazon. In: CONGRESSO BRASILEIRO DE SISTEMAS AGROFLORESTAIS, 3., 2000, Manaus. Sistemas agroflorestais: manejando a biodiversidade e compondo a paisagem rural - resumos expandidos. Manaus: Embrapa Amazonia Ocidental, 2000. p. 196-197.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Ocidental. |
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| 73. | | ZECH, W.; SCHROTH, G.; CRAVO, M. D. S.; TEIXEIRA, W. G.; KAISER, K.; LEHMANN, J. Water and nutrient fluxes as indicators for the sustainability of different land-use systems on the terra firme near Manaus - a project overview. In: SHIFT-WORKSHOP, 3., 1998, Manaus. Proceedings... Hamburg: GKSS, 1998. p. 435-440. il.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 74. | | ZECH, W.; SCHROTH, G.; CRAVO, M. da S.; TEIXEIRA, W. G.; KAISER, K.; LEHMANN, J. Water and nutrient fluxes as indicators for the sustainability of different land-use systems on the terra firme near Manaus - a project overview. In: SHIFT - WORKSHOP, 3., 1998, Manaus. Proceedings... Bonn: BMBF, 1998. p. 435-440.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Ocidental. |
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| 75. | | ZECH, W.; SCHROTH, G.; TEIXEIRA, W. G.; CRAVO, M.; KAISER, K.; LEHMANN, J. Water and nutrient fluxes as indicators for the sustainability of different land-use systems on the terra firme near Manaus. In: SHIFT WORKSHOP, 3., 1998, Manaus. Program, abstracts of presentations and posters... Hamburg: GKSS, 1998. p. P26.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Ocidental. |
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| 79. | | LEHMANN, J.; KERN, D.; GERMAN, L.; McCANN, J.; MARTINS, G. C.; MOREIRA, A. Soil fertility and production potential. In: LEHMANN, J.; KERN, D. C.; GLASER, B.; WOODS, W. I. (Ed.). Amazonian dark earths: origin, properties, management. Dordrecht: Kluwer, 2004. Cap. 6, p. 105-124.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Amazônia Ocidental. |
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| 80. | | SCHWENDENER, C. M.; LEHMANN, J.; RONDON, M.; WANDELLI, E.; FERNANDES, E. Soil mineral N dynamics beneath mixtures of leaves from legume and fruit trees in Central Amazonian multi-strata agroforests. Acta Amazônica, Manaus, v. 37, n. 3, p. 313-320, set. 2007.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - A |
| Biblioteca(s): Embrapa Amazônia Ocidental. |
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| Registros recuperados : 96 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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