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	Provedor de dados ArchiMer (5) OMA (1) Autor Sottolichio, Aldo (2) Thouvenin, Benedicte (2) Abdou, Melina (1) Abril, Gwenael (1) Bergeron, Jean-pierre (1) Blanc, Gerard (1) Bossy, Cécile (1) Briant, Nicolas (1) Caillaud, Matthieu (1) Derriennic, Hervé (1) Diaz, Melanie (1) Dutruch, Lionel (1) Fockedey, N. (1) Gil-diaz, Teba (1) Gil-díaz, Teba (1) Grasso, Florent (1) Knoery, Joel (1) Lajaunie-salla, Katixa (1) Le Hir, Pierre (1) Lerat-hardy, Antoine (1) Mais... Palavra-chave Gironde Estuary (6) 1881) ANE (1) Antimoine (1) Antimony (1) Bay of Biscay (1) Carbohydrates (1) Chlorophyll (1) Estuaire de la Gironde (1) Extractions sélectives (1) France (1) Garonne River (1) Hypoxia (1) Inorganic nutrients (1) Isopoda Synidotea laevidorsalis (Miers (1) Lot River (1) Modeling (1) Mud (1) Numerical modeling (1) Oxygen (1) Partition solide/liquide (Kd) (1) Mais... Tipo do documento Text (5) Info:eu-repo/semantics/article (1) Ano 2020 (1) 2019 (2) 2017 (1) 2006 (1) 1993 (1) País France (5) Belgium (1) Idioma Inglês (5) Francês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 6 Primeira ... 1 ... Última Comportement biogéochimique d'antimoine (Sb) et de tellure (Te) dans le milieu côtier : vers des scénarios de dispersion des radionucléides de Sb et de Te en cas de rejets accidentels de centrales nucléaires ArchiMer Gil-diaz, Teba. Antimony (Sb) and tellurium (Te) are relatively uncommon contaminants (stable isotopes) and may form short-lived fission products (radionuclides) released into the environment during nuclear power plants accidents. Little is known about their respective biogeochemical behaviours, necessary for general contamination studies and post-accidental radiological risk assessment.This work provides original knowledge on Sb and Te biogeochemical behaviour in highly dynamic continent-ocean transition systems: the Gironde Estuary and the Rhône River. Concentrations, spatial/temporal variations, solid/liquid partitioning (Kd), and fluxes are studied from long-term records at the watershed scale. Four estuarine sampling campaigns during contrasting hydrological... Tipo: Text Palavras-chave: Antimoine; Tellure; Estuaire de la Gironde; Partition solide/liquide (Kd); Extractions sélectives; Antimony; Tellurium; Gironde Estuary; Solid/liquid partitioning (Kd); Selective extractions. Ano: 2019 URL: https://archimer.ifremer.fr/doc/00607/71891/70592.pdf First record of <i>Synidotea laevidorsalis</i> (Miers, 1881) (Crustacea: Isopoda) in Europe (Gironde estuary, France) OMA Mees, J.; Fockedey, N.. This note reports on the presence of a well established population of the isopod <i>Synidotea laevidorsalis</i> (Miers) in the Gironde estuary (southwestern France). This species is new for the European fauna. <i>S. laevidorsalis</i> is a nonendemic cool-temperate to subtropical, shallow-water species which was probably introduced into the study area from Asia. In the salinity range of 1 to 10 g l<sup>-1</sup> of the Gironde the species constitutes an important component of the brackish-water hyperbenthic community. The population was already present in 1975 when it was misidentified as the native species <i>Idotea emarginata</i> (Fabricius). Tipo: Info:eu-repo/semantics/article Palavras-chave: Isopoda Synidotea laevidorsalis (Miers; 1881) ANE; France; Gironde Estuary. Ano: 1993 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2740 Impact of urban effluents on summer hypoxia in the highly turbid Gironde Estuary, applying a 3D model coupling hydrodynamics, sediment transport and biogeochemical processes ArchiMer Lajaunie-salla, Katixa; Wild-allen, Karen; Sottolichio, Aldo; Thouvenin, Benedicte; Litrico, Xavier; Abril, Gwenael. Estuaries are increasingly degraded due to coastal urban development and are prone to hypoxia problems. The macro-tidal Gironde Estuary is characterized by a highly concentrated turbidity maximum zone (TMZ). Field observations show that hypoxia occurs in summer in the TMZ at low river flow and a few days after the spring tide peak. In situ data highlight lower dissolved oxygen (DO) concentrations around the city of Bordeaux, located in the upper estuary. Interactions between multiple factors limit the understanding of the processes controlling the dynamics of hypoxia. A 3D biogeochemical model was developed, coupled with hydrodynamics and a sediment transport model, to assess the contribution of the TMZ and the impact of urban effluents through wastewater... Tipo: Text Palavras-chave: Hypoxia; TMZ; Gironde Estuary; Wastewater; Oxygen; Modeling. Ano: 2017 URL: http://archimer.ifremer.fr/doc/00388/49903/50475.pdf Modeling mud and sand transfers between a macrotidal estuary and the continental shelf: influence of the sediment-transport parameterization ArchiMer Diaz, Melanie; Grasso, Florent; Le Hir, Pierre; Sottolichio, Aldo; Caillaud, Matthieu; Thouvenin, Benedicte. Coastal environments are directly influenced by terrigenous inputs coming from rivers through estuaries. Quantifying the amount of nutrients and contaminants transported by sediments from continental areas to the sea is crucial for marine resources protection. However, the complexity of estuarine dynamics makes it difficult to quantify sediment fluxes from field measurements alone and requires numerical modeling. Thus, using a realistic 3D hydrodynamic and sediment transport model, this study aims at evaluating the influence of model empirical parameters on sediment fluxes and estimating uncertainties on mud and sand transfers at a macrotidal estuary mouth. A sensitivity analysis, considering changes in sediment transport parameters, revealed that the... Tipo: Text Palavras-chave: Sensitivity analysis; Sediment fluxes; Numerical modeling; Mud; Sand; Gironde Estuary. Ano: 2020 URL: https://archimer.ifremer.fr/doc/00617/72897/71906.pdf Small-scale variability of zooplankton pyruvate kinase activity in the Gironde Estuary plume (Atlantic French Coast): A case study under unusually low freshwater discharge ArchiMer Bergeron, Jean-pierre. Pyruvate kinase (PK) activity measurements are used to assess the role of carbohydrates in global feeding of mesozooplankton communities inhabiting an estuary plume. As a consequence of a remarkably low freshwater discharge rate, the sea surface layers of the area under estuarine influence showed a very moderate salinity fall and a nearly total depletion in nitrates, whereas higher levels of these nutrients were found in deeper, more saline, layers. Small-scale PK activity variations in mesozooplankton appear to be closely correlated to nitrate integration values within the water column. The results were analysed in comparison with literature reports. The study produced a coherent overall interpretation, which strongly supports the reliability of this new... Tipo: Text Palavras-chave: Gironde Estuary; Bay of Biscay; Pyruvate kinase; Pyruvate kinase; Carbohydrates; Zooplankton; Phytoplankton; Chlorophyll; Inorganic nutrients. Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-1745.pdf Tellurium behaviour in a major European fluvial–estuarine system (Gironde, France): fluxes, solid/liquid partitioning and bioaccumulation in wild oysters ArchiMer Gil-díaz, Teba; Schäfer, Jörg; Dutruch, Lionel; Bossy, Cécile; Pougnet, Frédérique; Abdou, Melina; Lerat-hardy, Antoine; Pereto, Clément; Derriennic, Hervé; Briant, Nicolas; Sireau, Teddy; Knoery, Joel; Blanc, Gerard. Tellurium (Te) is a technology critical element (TCE) with largely unknown environmental behaviour, especially in continent-ocean interface systems. The unknown behaviour results from the lack of studies in aquatic environments and from analytical challenges limiting the determination of its naturally low (ultra-trace) environmental levels. We performed a comprehensive study of Te in the Lot–Garonne–Gironde fluvial–estuarine system to better understand seasonal variations, solid/liquid partitioning (Kd), gross fluxes, estuarine dynamics, and transfer to wild oysters at the estuary mouth. A temporal record (2014–2017) of dissolved (Ted) and particulate (Tep) Te concentrations at five sites in the Lot–Garonne River system shows little differences between... Tipo: Text Palavras-chave: Garonne River; Gironde Estuary; Lot River; RNO; ROCCH; Technology critical element. Ano: 2019 URL: https://archimer.ifremer.fr/doc/00505/61684/65639.pdf Registros recuperados: 6 Primeira ... 1 ... Última

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