| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Amazônia Oriental. |
|
Data corrente: |
18/12/2009 |
|
Data da última atualização: |
08/06/2022 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
MARKEWITZ, D.; RESENDE, J. C. F.; PARRON, L.; BUSTAMANTE, M.; KLINK, C. A.; FIGUEIREDO, R. de O.; DAVIDSON, E. A. |
|
Afiliação: |
DANIEL MARKEWITZ, The University of Georgia; JULIO C. F. RESENDE, UNB; LUCILIA PARRON, UNB; MERCEDES BUSTAMANTE, UNB; CARLOS A. KLINK, UNB; RICARDO DE OLIVEIRA FIGUEIREDO, CPATU; ERIC A. DAVIDSON, The Woods Hole Research Center. |
|
Título: |
Dissolved rainfall inputs and streamwater outputs in an undisturbed watershed on highly weathered soils in the brazilian cerrado. |
|
Ano de publicação: |
2006 |
|
Fonte/Imprenta: |
Hydrological Processes, v. 20, n. 12, p. 2615-2639, Aug. 2006. |
|
DOI: |
10.1002/hyp.6219 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The cerrados of Brazil cover 2 million km2. Despite the extent of these seasonally dry ecosystems, little watershed research has been focused in this region, particularly relative to the watersheds of the Amazon Basin. The cerrado shares pedogenic characteristics with the Amazon Basin in draining portions of the Brazilian shield and in possessing Oxisols over much of the landscape. The objective of this research was to quantify the stream water geochemical relationships of an undisturbed 1200 ha cerrado watershed for comparison to river geochemistry in the Amazon. Furthermore, this undisturbed watershed was used to evaluate stream discharge versus dissolved ion concentration relationships. This research was conducted in the Córrego Roncador watershed of the Reserva Ecológica do Roncador (RECOR) of the Instituto Brasileiro Geografia e Estatística (IBGE) near Brasilia, Brazil. Bulk precipitation and stream water chemistry were analysed between May 1998 and May 2000. The upland soils of this watershed are nutrient poor possessing total stocks of exchangeable elements in the upper 1 m of 81 ± 13, 77 ± 4, 25 ± 3, and 1 ± 1 kg ha?1 of K, Ca, Mg, and P, respectively. Bulk precipitation inputs of dissolved nutrients for this watershed are low and consistent with previous estimates. The nutrient-poor soils of this watershed, however, increase the relative importance of precipitation for nutrient replenishment to vegetation during episodes of ecosystem disturbance. Stream water dissolved loads were extremely dilute with conductivities ranging from 4 to 10 µS cm?1 during periods of high- and low-flow, respectively. Despite the low concentrations in this stream, geochemical relationships were similar to other Amazonian streams draining shield geologies. Discharge-concentration relationships for Ca and Mg in these highly weathered soils developed from igneous rocks of the Brazilian shield demonstrated a significant negative relationship indicating a continued predominance of groundwater baseflow contributions these cationic elements. Copyright © 2006 John Wiley & Sons, Ltd. MenosThe cerrados of Brazil cover 2 million km2. Despite the extent of these seasonally dry ecosystems, little watershed research has been focused in this region, particularly relative to the watersheds of the Amazon Basin. The cerrado shares pedogenic characteristics with the Amazon Basin in draining portions of the Brazilian shield and in possessing Oxisols over much of the landscape. The objective of this research was to quantify the stream water geochemical relationships of an undisturbed 1200 ha cerrado watershed for comparison to river geochemistry in the Amazon. Furthermore, this undisturbed watershed was used to evaluate stream discharge versus dissolved ion concentration relationships. This research was conducted in the Córrego Roncador watershed of the Reserva Ecológica do Roncador (RECOR) of the Instituto Brasileiro Geografia e Estatística (IBGE) near Brasilia, Brazil. Bulk precipitation and stream water chemistry were analysed between May 1998 and May 2000. The upland soils of this watershed are nutrient poor possessing total stocks of exchangeable elements in the upper 1 m of 81 ± 13, 77 ± 4, 25 ± 3, and 1 ± 1 kg ha?1 of K, Ca, Mg, and P, respectively. Bulk precipitation inputs of dissolved nutrients for this watershed are low and consistent with previous estimates. The nutrient-poor soils of this watershed, however, increase the relative importance of precipitation for nutrient replenishment to vegetation during episodes of ecosystem disturbance. Stream water dissol... Mostrar Tudo |
|
Palavras-Chave: |
Watershed. |
|
Thesaurus Nal: |
geochemistry; nutrient balance. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02860naa a2200241 a 4500
001 1578388
005 2022-06-08
008 2006 bl uuuu u00u1 u #d
024 7 $a10.1002/hyp.6219$2DOI
100 1 $aMARKEWITZ, D.
245 $aDissolved rainfall inputs and streamwater outputs in an undisturbed watershed on highly weathered soils in the brazilian cerrado.$h[electronic resource]
260 $c2006
520 $aThe cerrados of Brazil cover 2 million km2. Despite the extent of these seasonally dry ecosystems, little watershed research has been focused in this region, particularly relative to the watersheds of the Amazon Basin. The cerrado shares pedogenic characteristics with the Amazon Basin in draining portions of the Brazilian shield and in possessing Oxisols over much of the landscape. The objective of this research was to quantify the stream water geochemical relationships of an undisturbed 1200 ha cerrado watershed for comparison to river geochemistry in the Amazon. Furthermore, this undisturbed watershed was used to evaluate stream discharge versus dissolved ion concentration relationships. This research was conducted in the Córrego Roncador watershed of the Reserva Ecológica do Roncador (RECOR) of the Instituto Brasileiro Geografia e Estatística (IBGE) near Brasilia, Brazil. Bulk precipitation and stream water chemistry were analysed between May 1998 and May 2000. The upland soils of this watershed are nutrient poor possessing total stocks of exchangeable elements in the upper 1 m of 81 ± 13, 77 ± 4, 25 ± 3, and 1 ± 1 kg ha?1 of K, Ca, Mg, and P, respectively. Bulk precipitation inputs of dissolved nutrients for this watershed are low and consistent with previous estimates. The nutrient-poor soils of this watershed, however, increase the relative importance of precipitation for nutrient replenishment to vegetation during episodes of ecosystem disturbance. Stream water dissolved loads were extremely dilute with conductivities ranging from 4 to 10 µS cm?1 during periods of high- and low-flow, respectively. Despite the low concentrations in this stream, geochemical relationships were similar to other Amazonian streams draining shield geologies. Discharge-concentration relationships for Ca and Mg in these highly weathered soils developed from igneous rocks of the Brazilian shield demonstrated a significant negative relationship indicating a continued predominance of groundwater baseflow contributions these cationic elements. Copyright © 2006 John Wiley & Sons, Ltd.
650 $ageochemistry
650 $anutrient balance
653 $aWatershed
700 1 $aRESENDE, J. C. F.
700 1 $aPARRON, L.
700 1 $aBUSTAMANTE, M.
700 1 $aKLINK, C. A.
700 1 $aFIGUEIREDO, R. de O.
700 1 $aDAVIDSON, E. A.
773 $tHydrological Processes$gv. 20, n. 12, p. 2615-2639, Aug. 2006.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Amazônia Oriental (CPATU) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Recursos Genéticos e Biotecnologia. Para informações adicionais entre em contato com cenargen.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
|
Data corrente: |
11/12/2008 |
|
Data da última atualização: |
03/04/2012 |
|
Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
|
Autoria: |
HILBECK, A.; ARPAIA, S.; BIRCH, A. N. E.; CHEN, Y.; FONTES, E. M. G.; LANG, A.; LÊ, T. T. H.; LÖVEI, G. L.; NANACHICHI, B.; NGUYEN, T. T. C.; NGUYEN, V. H.; NGUYEN, V. T.; PHAM, V. L.; PHAM, V. T.; PIRES, C. S. S.; SUJII, E. R.; TRÀC, K. L.; UNDERWOOD, E.; WHEATLEY, R. E.; WILSON, L. J.; ZWAHLEN, C.; ANDOW, D. A. |
|
Afiliação: |
Angelika Hilbeck, Swiss Federal Institute of Technology ETHZ; Salvatore Arpaia Italian National Agency for New Technologies Energy and Environment Research Centre Trisais; A. Nicholas E. Birch SCRI Scotland; Yolanda H. Chen, International Rice Research Institute (IRRI); Eliana Maria Gouveia Fontes, Embrapa Recursos Genéticos e Biotecnologia; Andreas Lang, Unifersity of Basel; Lê Thi Thu Hong, Southern Fruit Research Institute (SOFRI); Gabor L. Lövei, University of Arhus; Barbara Manachini, University of Palermo; Nguyen Thi Thu Cúc, Can Tho University; Nguyen Van Huýnh, Can Tho University; Nguyen Van Tuat, Food Crops Research Institute (FCRI); Pham Van Lam, Plant Protection Research Institute (PPRI); Pham Van Toan, Vietnam Ministry of Agriculture and Rural Development (MARD); Carmen Silva Soares Lima, Embrapa Recursos Genéticos e Biotecnologia; Edison Ryoiti Sujii, Embrapa Recursos Genéticos e Biotecnologia; Tràc Khu'o'ng Lai, Southern Fruit Research Institute (SOFRI); Evelyn Underwood, Swiss Federal Institute of Science and Technology ETHZ; Ron E. Wheatley SCRI Scotland; Lewis J. Wilson, CSIRO Plant Industry and Programme Leader; Claudia Zwahlen, University of Neuchâtel; David A. Andow, University of Minnesota. |
|
Título: |
Non-target and biological diversity risk assessment. |
|
Ano de publicação: |
2008 |
|
Fonte/Imprenta: |
In: ANDOW, D. A.; HILBECK, A.; TUAT, N. V. (Ed.) Environmental risk assessment of genetically modified organisms: challenges and opportunities with BT cotton in Vietnam. Wallingford, UK: CABI Publishing, 2008. v. 4 360 p. (Environmental risk assessment of genetically modified organisms series, v. 4). p. 115-137. |
|
Idioma: |
Inglês |
|
Palavras-Chave: |
Diversidade biológica. |
|
Thesagro: |
Algodão. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01256naa a2200385 a 4500
001 1190301
005 2012-04-03
008 2008 bl uuuu u00u1 u #d
100 1 $aHILBECK, A.
245 $aNon-target and biological diversity risk assessment.
260 $c2008
650 $aAlgodão
653 $aDiversidade biológica
700 1 $aARPAIA, S.
700 1 $aBIRCH, A. N. E.
700 1 $aCHEN, Y.
700 1 $aFONTES, E. M. G.
700 1 $aLANG, A.
700 1 $aLÊ, T. T. H.
700 1 $aLÖVEI, G. L.
700 1 $aNANACHICHI, B.
700 1 $aNGUYEN, T. T. C.
700 1 $aNGUYEN, V. H.
700 1 $aNGUYEN, V. T.
700 1 $aPHAM, V. L.
700 1 $aPHAM, V. T.
700 1 $aPIRES, C. S. S.
700 1 $aSUJII, E. R.
700 1 $aTRÀC, K. L.
700 1 $aUNDERWOOD, E.
700 1 $aWHEATLEY, R. E.
700 1 $aWILSON, L. J.
700 1 $aZWAHLEN, C.
700 1 $aANDOW, D. A.
773 $tIn: ANDOW, D. A.; HILBECK, A.; TUAT, N. V. (Ed.) Environmental risk assessment of genetically modified organisms: challenges and opportunities with BT cotton in Vietnam. Wallingford, UK: CABI Publishing, 2008.$gv. 4 360 p. (Environmental risk assessment of genetically modified organisms series, v. 4). p. 115-137.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Recursos Genéticos e Biotecnologia (CENARGEN) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
