Factorial design plan was experimented i Perna perna in order to find out the contribution of day exposure, Cd and Cu concentrations in water, and their interactions on metallothioneins (MT), Cd, and Cu (the dependent ...

In situ benthic flux chamber experiments were performed during late austral spring and early summer of 1996 at eleven nearshore locations in the southern Patos Lagoon, Brazil. The Patos Lagoon is the largest lagoonal system ...

Initially, the heart concentration data does not seem relevant for use as a bioindicator, mainly due to its low concentration level. After applying a normalizing procedure, the heart results were a better Hg bioindicator ...

The southern portion of the Brazilian coast is dominated by coastal lagoons formed by sandy barrier spits with small inlets. This coastal configuration is a barrier to the surface flow of freshwater to the sea; thus, we ...

Com os objetivos de conhecer a estrutura de três regiões hidrológicamente distintas na parte estuarina da Lagoa dos Patos e observar a possível formação de um gradiente longitudinal nesta área, foram efetuados onze cruzeiros, ...

O estuário da Lagoa dos Patos possui várias enseadas marginais semi-fechadas e com alta produtividade, conhecidas como “Sacos”. As águas das margens do Saco da Mangueira são receptoras da descarga de efluentes insuficientemente ...

The hydrogen chromate anion (HCrO4), which is the predominant species in acidic solutions and solutions with low chromium concentration, was determined by capillary zone electrophoresis (CZE) using UV detection on-column ...

This work presents a study on the horizontal turbulent eddy diffusion for both inner part and shallow areas around of Rio Grande Harbor navigation channel, Patos Lagoon estuary, RS, Brazil. It was made through the monitoring ...

In a factorial design study involving the determination of F- by ion-selective electrodes, a significant interference was demonstrated for Fe, with an even more pronounced interference for Al. The fluoride leaching procedure ...

Mirim Lagoon is shared between Brazil and Uruguay. It benefits an approximate population of 1 million people and supplies the Taim wetlands (Biosphere Reserve-UNESCO) with water. In spite of having unusual features, such ...

The analysis of suspended particles probably provides the best basis for assessing metal contamination of aquatic environments. However, such assessments cannot be made unless suf®cient knowledge of natural contributions ...

Embryo production was reduced in female grass shrimp exposed to sediments with added coal fly ash and to sediments collected from an estuarine station containing high PAH concentrations due to its proximity to a highway ...

The effect of a 7-nao drought (La Nifia 1988) was evaluated on pelagic properties in the large Paros Lagoon (30~176 50~176 Frona December 1987 to December 1988, surface water was sampled along the longitudinal axis of the ...

This paper presents isotopic composition (d18O, d2H) of groundwater, lagoon water, and seawater collected in a coastal lagoon system in Southern Brazil as a tool to define groundwater sources within a permeable barrier ...

Atividades de cultivo de camarão tendem a aumentar a taxa de sedimentação de matéria orgânica nos corpos hídricos receptores de seus efluentes, devido à excessiva produção de produtos de excreção e sobras de ração. Dependendo ...

This paper characterizes major ion distributions and investigates whether groundwater exerts a major control on the chemical functioning of Mangueira Lagoon, a large (90 km long), shallow (*4–5 m deep), and fresh coastal ...

The Patos Lagoon, located in Southern Brazil, is the world's largest choked coastal lagoon with an approximately 151000 km2 watershed. It receives untreated domestic, agricultural and industrial wastes associated with the ...

The Ebro river flows to the Mediterranean coast of Spain. During its final stretch, the Ebro behaves ina similar way to a highly stratified estuary. This paper describes the transport of nutrients to the Ebro estuary, ...

Patos Lagoon is the largest receptor of fluvial waters used for agricultural, navigational and fishing activities in the state of Rio Grande do Sul. The dumping of industrial and domestic effluents into those waters is its ...