|
|
Registros recuperados : 126 | |
41. | | CARVALHO, A. M.; BUSTAMANTE, M. M. C.; ALCÂNTARA, F. A.; RESCK, I. S.; LEMOS, S. S. Characterization by solid-state CPMAS 13C NMR spectroscopy of decomposing plant residues in conventional and no-tillage systems in Central Brazil. Soil and Tillage Research, Amsterdam, v. 102, n. 1, p. 144-150, jan. 2009. Biblioteca(s): Embrapa Cerrados. |
| |
43. | | NARDOTO, G.; PINTO, A.; CHIBA, R.; BUSTAMANTE, M.; KLINK, C.; MOREIRA, A. Efeito de queimadas prescritas na producao de serapilheira em area de cerrado stricto sensu no D. F. In: CONGRESSO NACIONAL DE BOTANICA, 50., 1999, Blumenau. Programa e resumos... Blumenau: Sociedade Botanica do Brasil, 1999. p. 170. Biblioteca(s): Embrapa Cerrados. |
| |
45. | | BUSTAMANTE, M. M. C.; KOZOVITS, A. R.; SILVA, L. F.; DUARTE, G. F. Nitrate assimilation in "Cerrado" woody species. In: SIMPOSIO SOBRE O CERRADO, 8.; INTERNATIONAL SYMPOSIUM ON TROPICAL SAVANNAS, 1., 1996, Brasilia, DF. Biodiversidade e producao sustentavel de alimentos e fibras nos Cerrados: anais... Planaltina: EMBRAPA-CPAC, 1996. p.302-307. 3 figuras. Biblioteca(s): Embrapa Cerrados. |
| |
47. | | CARVALHO, A. M. de; BUSTAMANTE, M. M. da C.; MIRANDA, L. N. de; KOZOVITS, A. R. Emissão sazonal de gases de efeito estufa em latossolo sob sucessão milho/plantas de cobertura. In: ANDRADE, S. R. M. de; FALEIRO, F. G.; SERENO, J. R.; DALLA CORTE, J. L.; SOUSA, E. dos S. de (Ed.). Resultados de pesquisa para o Cerrado: 2004-2005. Planaltina, DF: Embrapa Cerrados, 2007. p. 133-138. Biblioteca(s): Embrapa Cerrados. |
| |
48. | | CARVALHO, A. M. de; BUSTAMANTE, M. M. da C.; PRADO, Z. A. do. Disponibilidade de fósforo em Latossolo sob cultivo de milho e plantas de cobertura. In: SIMPÓSIO NACIONAL CERRADO, 9.; SIMPÓSIO INTERNACIONAL SAVANAS TROPICAIS, 2., 2008, Brasília, DF. Desafios e estratégias para o equilíbrio entre sociedade, agronegócio e recursos naturais: anais... Planaltina, DF: Embrapa Cerrados, 2008. 1 CD-ROM. Biblioteca(s): Embrapa Cerrados. |
| |
49. | | RESENDE, J. C. F.; KLINK, C. A.; BUSTAMANTE, M.; MARKEWITZ, D.; DAVIDSON, E.; COELHO, H. A. Disponibilidade de fosforo em solos de uma area de cerrado sentido restrito. In: CONGRESSO NACIONAL DE BOTANICA, 51., Brasilia, DF. Resumos. Brasilia: Sociedade Botanica do Brasil, 2000. p. 179. Biblioteca(s): Embrapa Cerrados. |
| |
50. | | PARRON, L. M.; BUSTAMANTE, M. M. da C.; PRADO, C. L. C. Dinamica da mineralizacao liquida de N-inorganico em um gradiente topografico em mata de galeria do Distrito Federal. In: REUNIAO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRICAO DE PLANTAS, 25.; REUNIAO BRASILEIRA SOBRE MICORRIZAS, 9.; SIMPOSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 7.; REUNIAO BRASILEIRA DE BIOLOGIA DO SOLO, 4., 2002, Rio de Janeiro. FertBio 2002: agricultura: bases ecologicas para o desenvolvimento social e economico sustentado. Rio de Janeiro: [s. n.], 2002. Biblioteca(s): Embrapa Cerrados. |
| |
56. | | PARRON, L. M.; BUSTAMANTE, M. M. C.; CAMARGO, P.; PRADO, C. L.; MARTINELLI, L. A. Isotopic composition of soils and plants in a gallery forest of cerrado biome: effect of topographic gradient. In: CONFERÊNCIA CIENTÍFICA DO LBA, 3., 2004, Brasília, DF. Anais de trabalhos completos. Brasília, DF: LBA, 2004. Resumo 27.6-P. Biblioteca(s): Embrapa Florestas. |
| |
58. | | MIRANDA, S. DO C. DE; BUSTAMANTE, M.; PALACE, M.; HAGEN, S.; KELLER, M.; FERREIRA, L. G. Regional Variations in Biomass Distribution in Brazilian Savanna Woodland. Biotropica, v. 46, n. 2, p. 125-138, 2014. Artigo publicado por Pesquisador Visitante da Embrapa Monitoramento por Satélite. Biblioteca(s): Embrapa Territorial. |
| |
60. | | NARDOTO, G. B.; SILVA, M. R. S. S.; BUSTAMANTE, M.; MENDES, I. C. Relationships between soil properties and soil respiration in burned and unburnerd cerrado stricto sensu areas. In: REUNIAO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRICAO DE PLANTAS, 25.; REUNIAO BRASILEIRA SOBRE MICORRIZAS, 9.; SIMPOSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 7.; REUNIAO BRASILEIRA DE BIOLOGIA DO SOLO, 4., 2002, Rio de Janeiro. FertBio 2002: agricultura: bases ecologicas para o desenvolvimento social e economico sustentado. Rio de Janeiro: [s. n.], 2002. Biblioteca(s): Embrapa Cerrados. |
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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 |
Circulação/Nível: |
Internacional - A |
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.
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