3 documents found, page 1 of 1
Nutrients, heavy metals and organic micropollutants in an eutrophic Brazilian l...
Lacerda, Luiz Drude de; Knoppers, Bastiaan A.; Patchineelam, Sambasiva Raohis article documents the environmental quality with respect to nutrients, heavy metals, and organic micropollutants at Lagoa de Guarapina, a tropical eutrophic lagoon of Rio de Janeiro State, Brazil. Concentrations of nutrients and heavy metals in the lagoon and its tributaries were low, closely resembling natural conditions. However, Pb formed the exception, and its presence in conjunction with detectable con...
Spreading eutrophication and changing CO2 fluxes in the tropical coastal ocean:...
Abril, Gwenaël; Cotovicz Júnior, Luiz C.; Nepomuceno, Nepomuceno; Erbas, Thais; Costa, Suzan; Ramos, Vinicius V.; Moser, Gleyci; Fernandes, AlexandreIn Brazil and in many other tropical countries, large urban cities and populations are still growing on the coast and coverage in terms of sewage treatments is far from desirable. Cultural eutrophication is not solely a threat for the coastal ocean; it is now acting as one of its major biogeochemical and ecological driver. Along the littoral of the state of Rio de Janeiro, semi-enclosed marine bays and lagoons ...
Spatio-temporal variability of methane (CH ) concentrations and diffusive fluxe...
Cotovicz Júnior, Luiz C.; Knoppers, Bastiaan A.; Poirier, Dominique; Costa Sousa, Suzan J.; Abril, GwenaëlThe increasing concentrations of methane (CH4) in the atmosphere stress the importance of monitoringand quantifying the fluxes from coastal environments. In nine sampling campaigns between 2013 and 2014,we measured the spatial CH4concentrations, identified major sources and calculated the fluxes at the air-water interface in an eutrophic tropical embayment, Guanabara Bay, Rio de Janeiro, Brazil. The bay presentedh...