Search Results - "Knoppers, Bastiaan A"

Predominance of phytoplankton-derived dissolved and particulate organic carbon in a highly eutrophic tropical coastal embayment (Guanabara Bay, Rio de Janeiro, Brazil) by Cotovicz, Luiz C., Knoppers, Bastiaan A., Brandini, Nilva, Poirier, Dominique, Santos, Suzan J. Costa, Cordeiro, Renato C., Abril, Gwenaël

“…We investigate the carbon dynamics in Guanabara Bay, an eutrophic tropical coastal embayment surrounded by the megacity of Rio de Janeiro (southeast coast of…”
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Eutrophication overcoming carbonate precipitation in a tropical hypersaline coastal lagoon acting as a CO2 sink (Araruama Lagoon, SE Brazil) by Cotovicz, Luiz C., Knoppers, Bastiaan A., Régis, Carolina R., Tremmel, Daniel, Costa-Santos, Suzan, Abril, Gwenaël

“…The carbonate chemistry was investigated in the semiarid eutrophic Araruama Lagoon (Brazil), one of the largest hypersaline coastal lagoons in the world…”
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A Model Analysis for the Design and Deployment of an Eulerian Sediment Trap Mooring Array in a Western Boundary Upwelling System from Southeast Brazil by Mendoza, Ursula, Candella, Rogério N, Assad, Luiz P F, Castillo, Federico V, Azevedo, Laura, Knoppers, Bastiaan A, Albuquerque, Ana Luiza S

“…This work addresses the design and configuration of a Eulerian sediment trap mooring array, which was deployed at the shelf edge (zm ≈ 140 m) 80 km off Cabo…”
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Spatio-temporal variability of methane (CH4) concentrations and diffusive fluxes from a tropical coastal embayment surrounded by a large urban area (Guanabara Bay, Rio de Janeiro, Brazil) by Cotovicz Jr, Luiz C., Knoppers, Bastiaan A., Brandini, Nilva, Poirier, Dominique, Costa Santos, Suzan J., Abril, Gwenaël

“…The increasing concentrations of methane (CH₄) in the atmosphere stress the importance of monitoring and quantifying the fluxes from coastal environments. In…”
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Greenhouse gas emissions (CO2 and CH4) and inorganic carbon behavior in an urban highly polluted tropical coastal lagoon (SE, Brazil) by Cotovicz, Luiz C., Ribeiro, Renato P., Régis, Carolina Ramos, Bernardes, Marcelo, Sobrinho, Rodrigo, Vidal, Luciana Oliveira, Tremmel, Daniel, Knoppers, Bastiaan A., Abril, Gwenaël

“…Increasing eutrophication of coastal waters generates disturbances in greenhouse gas (GHG) concentrations and emissions to the atmosphere that are still poorly…”
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Aragonite saturation state in a tropical coastal embayment dominated by phytoplankton blooms (Guanabara Bay – Brazil) by Cotovicz, Luiz C., Knoppers, Bastiaan A., Brandini, Nilva, Poirier, Dominique, Costa Santos, Suzan J., Abril, Gwenaël

“…The dynamics of the aragonite saturation state (Ωarag) were investigated in the eutrophic coastal waters of Guanabara Bay (RJ-Brazil). Large phytoplankton…”
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Sources and sinks of dissolved inorganic carbon in an urban tropical coastal bay revealed by δ13C-DIC signals by Cotovicz, Luiz C., Knoppers, Bastiaan A., Deirmendjian, Loris, Abril, Gwenaël

“…Dissolved inorganic carbon (DIC), its stable isotope composition (δ13C-DIC) and ancillary parameters of the water column were investigated in a eutrophic…”
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Source characterization using molecular distribution and stable carbon isotopic composition of n-alkanes in sediment cores from the tropical Mundaú–Manguaba estuarine–lagoon system, Brazil by Silva, Thais R., Lopes, Silvia R.P., Spörl, Gertrud, Knoppers, Bastiaan A., Azevedo, Débora A.

“…► First report of temporal variation in hydrocarbons of this system. ► Contribution and source characterization of n-alkanes over the past 40yr. ► The δ13C of…”
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Lipids in the sedimentary record as markers of the sources and deposition of organic matter in a tropical Brazilian estuarine–lagoon system by Carreira, Renato S., Araújo, Michelle P., Costa, Talitha L.F., Spörl, Gertrud, Knoppers, Bastiaan A.

“…Lipid biomarkers [fatty acids (FAs), sterols and alcohols] and bulk properties [total organic carbon (TOC), C/N ratio and δ 13C] were determined in sediments…”
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Particle Fluxes and Bulk Geochemical Characterization of the Cabo Frio Upwelling System in Southeastern Brazil: Sediment Trap Experiments between Spring 2010 and Summer 2012 by ALBUQUERQUE, ANA LUIZA S., BELÉM, ANDRÉ L., ZULUAGA, FRANCISCO J.B., CORDEIRO, LIVIA G.M., MENDOZA, URSULA, KNOPPERS, BASTIAAN A., GURGEL, MARCIO H.C., MEYERS, PHILIP A., CAPILLA, RAMSÉS

“…Physical and biogeochemical processes in continental shelves act synergistically in both transporting and transforming suspended material, and ocean dynamics…”
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Pollution source evaluation using petroleum and aliphatic hydrocarbons in surface sediments from two Brazilian estuarine systems by Maioli, Otávio L.G., Rodrigues, Kamila C., Knoppers, Bastiaan A., Azevedo, Débora A.

“…The levels of aliphatic hydrocarbons, including petroleum biomarkers (hopanes and steranes) were measured in surface sediments from two Brazilian estuarine…”
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Carbon, nitrogen, and phosphorus stoichiometry of plankton and the nutrient regime in Cabo Frio Bay, SE Brazil by Kütter, Vinicius T., Wallner-Kersanach, Monica, Sella, Silvia M., Albuquerque, Ana Luiza S., Knoppers, Bastiaan A., Silva-Filho, Emmanoel V.

“…This long-term study, performed during the years 2003–2005 and 2008–2009, investigated the carbon (C), nitrogen (N), and phosphorus (P) contents of the phyto-…”
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Particle Fluxes and Bulk Geochemical Characterization of the Cabo Frio Upwelling System in Southeastern Brazil: Sediment Trap Experiments between Spring 2010 and Summer 2012 by Albuquerque, Ana Luiza S, Belém, André L, Zuluaga, Francisco J B, Cordeiro, Livia G M, Mendoza, Ursula, Knoppers, Bastiaan A, Gurgel, Marcio H C, Meyers, Philip A, Capilla, Ramsés

“…Physical and biogeochemical processes in continental shelves act synergistically in both transporting and transforming suspended material, and ocean dynamics…”
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Sources and Distribution of Particulate Organic Matter of a Tropical Estuarine-Lagoon System from NE Brazil as Indicated by Lipid Biomarkers by Costa, Talitha L. F, Araújo, Michelle P, Knoppers, Bastiaan A, Carreira, Renato S

“…In the present work, we evaluated the origin of organic matter in the tropical estuarine-lagoon system of Mundaú-Manguaba, NE Brazil, by considering the bulk…”
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Sources, distribution and variability of hydrocarbons in total atmospheric suspended particulates of two Brazilian areas influenced by sugarcane burning by Maioli, Otávio L. G, Knoppers, Bastiaan A, Azevedo, Débora A

“…Polycyclic aromatic hydrocarbons (PAHs) and aliphatic hydrocarbons (AHs), such as n-alkanes, hopanes and steranes, were studied in relation to total…”
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Distribution of prokaryotic organisms in a tropical estuary influenced by sugar cane agriculture in northeast Brazil by Wolf, Lars, Schwalger, Berit, Knoppers, Bastiaan A, da Silva, Luiz Antonio Ferreira, Medeiros, Paulo Ricardo Petter, Pollehne, Falk

“…In a joint Brazilian-German case study, distribution patterns of microorganisms were compared with environmental variables in the tropical coastal Manguaba…”
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Fontes e distribuição de matéria orgânica sedimentar no complexo estuarino-lagunar de Mundaú-Manguaba/AL, utilizando esterois e alcoóis como indicadores by Ribeiro, Maria Antonia T. S. B, Knoppers, Bastiaan A, Carreira, Renato S

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Thermodynamic uptake of atmospheric CO2 in the oligotrophic and semiarid São Francisco estuary (NE Brazil) by Abril, Gwenaël, Libardoni, Bruno G., Brandini, Nilva, Cotovicz, Luiz C., Medeiros, Paulo R.P., Cavalcante, Geórgenes H., Knoppers, Bastiaan A.

“…Estuarine carbonate chemistry predicts that thermodynamic equilibration during the mixing of freshwater with seawater will generate a carbon dioxide (CO2) sink…”
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Carbon dioxide sources and sinks in the delta of the Paraíba do Sul River (Southeastern Brazil) modulated by carbonate thermodynamics, gas exchange and ecosystem metabolism during estuarine mixing by Cotovicz, Luiz C., Vidal, Luciana O., de Rezende, Carlos Eduardo, Bernardes, Marcelo C., Knoppers, Bastiaan A., Sobrinho, Rodrigo L., Cardoso, Renan P., Muniz, Marcelo, dos Anjos, Roberto Meigikos, Biehler, Antoine, Abril, Gwenaël

“…Tropical estuarine deltas generally present poorly buffered waters in their freshwaters. Carbonate chemistry predicts that mixture of such warm freshwater with…”
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Evaluation of anthropogenic inputs of hydrocarbons in sediment cores from a tropical Brazilian estuarine system by Silva, Thais R., Lopes, Silvia R.P., Spörl, Gertrud, Knoppers, Bastiaan A., Azevedo, Débora A.

“…Sources and historical deposition of aliphatic and polycyclic aromatic hydrocarbons (PAHs) were investigated in sediment cores from the tropical…”
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