Search Results - "G. GRUAU"

Seasonal variability of stream water quality response to storm events captured using high-frequency and multi-parameter data by Fovet, O., Humbert, G., Dupas, R., Gascuel-Odoux, C., Gruau, G., Jaffrezic, A., Thelusma, G., Faucheux, M., Gilliet, N., Hamon, Y., Grimaldi, C.

“…•Storms stream flow, turbidity, NO3 and DOC concentrations and groundwater levels were described.•A set of functional descriptors was proposed to identify and…”
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Dry-season length and runoff control annual variability in stream DOC dynamics in a small, shallow groundwater-dominated agricultural watershed by Humbert, G., Jaffrezic, A., Fovet, O., Gruau, G., Durand, P.

“…As a phenomenon integrating climate conditions and hydrological control of the connection between streams and terrestrial dissolved organic carbon (DOC)…”
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Spatial Persistence of Water Chemistry Patterns Across Flow Conditions in a Mesoscale Agricultural Catchment by Gu, S., Casquin, A., Dupas, R., Abbott, B. W., Petitjean, P., Durand, P., Gruau, G.

“…Protecting water quality at catchment scales is complicated by the high spatiotemporal variability in water chemistry. Consequently, determining pollutant…”
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Multitemporal Relationships Between the Hydroclimate and Exports of Carbon, Nitrogen, and Phosphorus in a Small Agricultural Watershed by Strohmenger, L., Fovet, O., Akkal‐Corfini, N., Dupas, R., Durand, P., Faucheux, M., Gruau, G., Hamon, Y., Jaffrezic, A., Minaudo, C., Petitjean, P., Gascuel‐Odoux, C.

“…Agriculture affects the biogeochemical cycles of carbon, nitrogen, and phosphorus, leading to a deterioration of surface water quality. The increasing…”
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Sources of dissolved organic carbon during stormflow in a headwater agricultural catchment by Morel, B, Durand, P, Jaffrezic, A, Gruau, G, Molenat, J

“…Increasing dissolved organic carbon (DOC) concentrations have been reported during the last 15 years in streams from the United Kingdom, Northern Europe and…”
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DOC sources and DOC transport pathways in a small headwater catchment as revealed by carbon isotope fluctuation during storm events by Lambert, T, Pierson-Wickmann, A.-C, Gruau, G, Jaffrezic, A, Petitjean, P, Thibault, J. N, Jeanneau, L

“…Monitoring the isotopic composition (δ13CDOC) of dissolved organic carbon (DOC) during flood events can be helpful for locating DOC sources in catchments and…”
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Solute transport dynamics in small, shallow groundwater-dominated agricultural catchments: insights from a high-frequency, multisolute 10 yr-long monitoring study by Aubert, A. H, Gascuel-Odoux, C, Gruau, G, Akkal, N, Faucheux, M, Fauvel, Y, Grimaldi, C, Hamon, Y, Jaffrézic, A, Lecoz-Boutnik, M, Molénat, J, Petitjean, P, Ruiz, L, Merot, P

“…High-frequency, long-term and multisolute measurements are required to assess the impact of human pressures on water quality due to (i) the high temporal and…”
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New insights into cerium anomalies in organic-rich alkaline waters by Pourret, Olivier, Davranche, Mélanie, Gruau, Gérard, Dia, Aline

“…Cerium anomaly development in natural waters is commonly related to the mechanism of oxidative scavenging of tetravalent cerium by iron and/or manganese…”
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Sources of dissolved organic matter during storm and inter-storm conditions in a lowland headwater catchment: constraints from high-frequency molecular data by Jeanneau, L, Denis, M, Pierson-Wickmann, A.-C, Gruau, G, Lambert, T, Petitjean, P

“…The transfer of dissolved organic matter (DOM) at soil–river interfaces controls the biogeochemistry of micropollutants and the equilibrium between continental…”
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Relative Decay of Fecal Indicator Bacteria and Human-Associated Markers: A Microcosm Study Simulating Wastewater Input into Seawater and Freshwater by Jeanneau, L, Solecki, O, Wéry, N, Jardé, E, Gourmelon, M, Communal, P. -Y, Jadas-Hécart, A, Caprais, M. -P, Gruau, G, Pourcher, A. -M

“…Fecal contaminations of inland and coastal waters induce risks to human health and economic losses. To improve water management, specific markers have been…”
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Constraints on the Sources and Production Mechanisms of Dissolved Organic Matter in Soils from Molecular Biomarkers by L. Jeanneau, A. Jaffrezic, A.-C. Pierson-Wickmann, G. Gruau, T. Lambert, P. Petitjean

“…Spatio‐temporal modifications of the composition of dissolved organic matter (DOM) from a wetland in an agricultural catchment were investigated using…”
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Origin of fecal contamination in waters from contrasted areas: Stanols as Microbial Source Tracking markers by Derrien, M., Jardé, E., Gruau, G., Pourcher, A.M., Gourmelon, M., Jadas-Hécart, A., Pierson Wickmann, A.C.

“…Improving the microbiological quality of coastal and river waters relies on the development of reliable markers that are capable of determining sources of…”
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Evolution of scientific questions over 50 years in the Kervidy-Naizin catchment: from catchment hydrology to integrated studies of biogeochemical cycles and agroecosystems in a rural landscape by Gascuel-Odoux, C., Fovet, O., Gruau, G., Ruiz, L., Merot, P.

“…Catchment studies on water quality started in the 1960s, when scientists identified long-term environmental impacts and realized the complexity involved in…”
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Re–Os isotope systematics and HSE abundances of the 3.5 Ga Schapenburg komatiites, South Africa: Hydrous melting or prolonged survival of primordial heterogeneities in the mantle? by Puchtel, Igor S., Walker, Richard J., Anhaeusser, Carl R., Gruau, Gérard

“…We report Re–Os isotope and highly siderophile element (HSE) abundance data for komatiites from the Schapenburg Greenstone Remnant (SGR), South Africa, an…”
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Influence of salinity and natural organic matter on the solid phase extraction of sterols and stanols: Application to the determination of the human sterol fingerprint in aqueous matrices by Jeanneau, L., Jardé, E., Gruau, G.

“…Faecal sterols have been proposed as direct chemical markers for the determination of faecal contamination in inland and coastal waters. In this study, we…”
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The distribution of rare earth elements in groundwaters: assessing the role of source-rock composition, redox changes and colloidal particles by Dia, Aline, Gruau, Gérard, Olivié-Lauquet, Gwenaelle, Riou, Christine, Molénat, Jérome, Curmi, Pierre

“…Rare earth element (REE), dissolved organic carbon (DOC) and trace-element (Al, Mn, Fe, Sr, Ba, U and Th) concentrations were measured in fourteen well water…”
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Release of Trace Elements in Wetlands: Role of Seasonal Variability by Olivie-Lauquet, Gwenaelle, Gruau, Gerard, Dia, Aline, Riou, Christine, Jaffrezic, Anne, Henin, Odile

“…Dissolved concentrations were determined for Fe, Mn, Al, Cu, Zn, La, U, Th, Cd and As in a wetland and its recipient stream to reveal the effect of seasonal…”
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Environmental impact of As(V)–Fe oxyhydroxide reductive dissolution: An experimental insight by Fakih, Mohamad, Davranche, Mélanie, Dia, Aline, Nowack, Bernd, Morin, Guillaume, Petitjean, Patrice, Châtellier, Xavier, Gruau, Gérard

“…Polymer slides covered by synthetic As-spiked ferrihydrite (As-Fh) or As-spiked lepidocrocite (As-Lp) were inserted into an organic-rich wetland soil in non…”
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Resetting of SmNd systematics during metamorphism of > 3.7-Ga rocks: implications for isotopic models of early Earth differentiation by Gruau, G., Rosing, M., Bridgwater, D., Gill, R.C.O.

“…New SmNd isotopic results for sixteen samples from the Garbenschiefer Amphibolite Unit of the > 3700-Ma Isua supracrustal belt of West Greenland are reported…”
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Mechanisms of nitrate transfer from soil to stream in an agricultural watershed of French Brittany by MOLENAT, Jérome, DURAND, Patrick, GASCUEL-ODOUX, Chantal, DAVY, Philippe, GRUAU, Gérard

“…In French Brittany, water pollution with nitrate due tointensive agriculture has become one of the major environmentalconcerns. In this article, the nitrate,…”
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