Search Results - "Victoria, R L"

Hydrochemical variability at the Upper Paraguay Basin and Pantanal wetland by Rezende Filho, A. T, Furian, S, Victoria, R. L, Mascré, C, Valles, V, Barbiero, L

“…Compartmentalization is a prerequisite to understand large wetlands that receive water from several sources. However, it faces the heterogeneity in space and…”
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Properties of aerosols from sugar-cane burning emissions in Southeastern Brazil by Lara, L.L., Artaxo, P., Martinelli, L.A., Camargo, P.B., Victoria, R.L., Ferraz, E.S.B.

“…The influences of biomass burning emissions in the composition of aerosol have been studied during 1 year around the city of Piracicaba (Southeastern Brazil)…”
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Stable carbon and nitrogen isotopic composition of bulk aerosol particles in a C4 plant landscape of southeast Brazil by Martinelli, L.A., Camargo, P.B., Lara, L.B.L.S., Victoria, R.L., Artaxo, P.

“…The carbon and nitrogen isotopic compositions of aerosol particles collected in the Piracicaba region, where C4 plants like sugarcane and pasture dominate the…”
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Assessment of soil property spatial variation in an Amazon pasture: basis for selecting an agronomic experimental area by Cerri, C.E.P., Bernoux, M., Chaplot, V., Volkoff, B., Victoria, R.L., Melillo, J.M., Paustian, K., Cerri, C.C.

“…Our main objective in the present study was to assess the spatial variation of chemical and physical soil properties and then use this information to select an…”
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Dissolved nitrogen in rivers: comparing pristine and impacted regions of Brazil by Martinelli, L A, Coletta, L D, Ravagnani, E C, Camargo, P B, Ometto, J P H B, Filoso, S, Victoria, R L

“…Riverine nitrogen distribution is increasingly controlled by anthropogenic activities in their watersheds, regardless of spatial scale, climate, and…”
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Chemical composition of rainwater and anthropogenic influences in the Piracicaba River Basin, Southeast Brazil by Lara, L.B.L.S, Artaxo, P, Martinelli, L.A, Victoria, R.L, Camargo, P.B, Krusche, A, Ayers, G.P, Ferraz, E.S.B, Ballester, M.V

“…The influences of different kinds of anthropogenic activities on rainwater chemistry in a tropical area were studied during one uninterrupted year at…”
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Autotrophic Carbon Sources for Fish of the Central Amazon by Forsberg, B. R., Araujo-Lima, C. A. R. M., Martinelli, L. A., Victoria, R. L., Bonassi, J. A.

“…Effective management of the Amazon's commercial fish populations requires an understanding of the factors controlling their production. A fundamental step in…”
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CO₂ and O₂ Dynamics in Human-Impacted Watersheds in the State of São Paulo, Brazil by Salomão, M. S. M. B., Cole, J. J., Clemente, C. A., Silva, D. M. L., de Camargo, P. B., Victoria, R. L., Martinelli, L. A.

“…We studied the spatial and temporal variation in O₂ and dissolved inorganic carbon (DIC) forms concentrations in ten subtropical watersheds located in the…”
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Stable carbon isotope ratio of tree leaves, boles and fine litter in a tropical forest in Rondonia, Brazil by Martinelli, L.A, Almeida, S, Brown, I.F, Moreira, M.Z, Victoria, R.L, Sternberg, L.S.L, Ferreira, C.A.C, Thomas, W.W

“…Leaves of 208 trees were collected for isotopic analysis together with wood from 36 tree boles and 18 smaples of fine litter from a terra-firme forest located…”
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A remote sensing/GIS-based physical template to understand the biogeochemistry of the Ji-Paraná river basin (Western Amazônia) by Ballester, M.V.R, Victoria, D.de C, Krusche, A.V, Coburn, R, Victoria, R.L, Richey, J.E, Logsdon, M.G, Mayorga, E, Matricardi, E

“…Amazônia is one of the most important ecosystems of the planet, containing the largest extent of contiguous tropical rain forest on earth, over 5 million…”
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Impact of anthropogenic activity on the Hg concentrations in the piracicaba river basin (Sao Paulo State, Brazil) by FOSTIER, A.-H, FALOTICO, M. B, FERRAZ, E. S. B, TOMAZELLI, A. C, SALOMAO, M. S. M. B, MARTINELLI, L. A, VICTORIA, R. L

“…A sampling and analysis program has been completed between 1995 and 1998 in order to determine mercury concentrations in water, sediments, soils and fish in…”
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Acid rain and nitrogen deposition in a sub-tropical watershed (Piracicaba): ecosystem consequences by Krusche, A.V., de Camargo, P.B., Cerri, C.E., Ballester, M.V., Lara, L.B.L.S., Victoria, R.L., Martinelli, L.A.

“…Poorly buffered sandy soils may result in acidification problems for forests in this basin. High levels of wet N and acidic deposition were measured in…”
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Carbon-13 variation with depth in soils of Brazil and climate change during the Quaternary by Martinelli, L.A, Pessenda, L.C.R, Espinoza, E, Camargo, P.B, Telles, E.C, Cerri, C.C, Victoria, R.L, Aravena, R, Richey, J, Trumbore, S

“…Paleoecological and geomorphological studies indicate that, during the middle Holocene, there was a predominance of drier conditions with grassy savannahs…”
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Surface Air Temperature Variations in the Amazon Region and Its Borders during This Century by Victoria, R. L., Martinelli, L. A., Moraes, J. M., Ballester, M. V., Krusche, A. V., Pellegrino, G., Almeida, R. M. B., Richey, J. E.

“…Monthly average surface air temperature records from 17 stations in the Brazilian Amazon from 1913 to 1995 were used to compute annual air temperature means…”
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Effects of increasing organic matter loading on the dissolved O2, free dissolved CO2 and respiration rates in the Piracicaba River basin, Southeast Brazil by BALLESTER, M. V, MARTINELLI, L. A, KRUSCHE, A. V, VICTORIA, R. L, BERNARDES, M, CAMARGO, P. B

“…The concentrations of oxygen and carbon dioxide, and respiration rates, were investigated at 7 sites along major tributaries of the Piracicaba river to…”
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Organic matter and natural carbon-13 distribution in forested and cultivated oxisols by Vitorello, V.A. (Univ. de Sao Paulo, Piracicaba, SP, Brazil), Cerri, C.C, Andreux, F, Feller, C, Victoria, R.L

“…Soil carbon (C) distribution, natural 13C abundances and their changes as a consequence of cropping were studied in three neighboring areas on an Oxisol from…”
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Effects of sewage on the chemical composition of Piracicaba River, Brazil by MARTINELLI, L. A, KRUSCHE, A. V, VICTORIA, R. L, DE CAMARGO, P. B, BERNARDES, M, FERRAZ, E. S, DE MORAES, J. M, BALLESTER, M. V

“…Water samples were collected from 7 locations along major rivers of Piracicaba River basin for 22 months. The 4 upstream points represent non-polluted sites…”
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Effects of land use on water chemistry and macroinvertebrates in two streams of the Piracicaba river basin, south-east Brazil by Ometo, Jean Pierre H. B., Martinelli, Luiz A., Ballester, Maria Victoria, Gessner, Alaídes, Krusche, Alex V., Victoria, Reynaldo L., Williams, Michael

“…Summary 1 Several studies have shown that land use has a strong influence on river chemistry and its biotic components. Most of these studies focused on…”
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Stable isotope analysis of energy sources for larvae of eight fish species from the Amazon floodplain by Leite, R. G., Araújo-Lima, C. A. R. M., Victoria, R. L., Martinelli, L. A.

“…– Aquatic macrophytes form the most productive habitat of the Amazon floodplain and account for more than 60% of the net primary production of the ecosystem…”
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Spatial and temporal water quality variability in the Piracicaba River Basin, Brazil by Krusche, A.V, Carvalho, F.P. de, Moraes, J.M. de, Camargo, P.B. de, Ballester, M.V.R, Hornink, S, Martinelli, L.A, Victoria, R.L

“…The spatial and temporal variability of dissolved oxygen (DO), biochemical oxygen demand (BOD), nitrate concentration and total coliform (TC) were investigated…”
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