In the Imboassica Lagoon (22o 24’S and 42o 42’W) (Macaé, RJ, Brazil), two species of macroalgae of the genus Chara (C. angolensis and C. fibrosa) registered in large areas were identified. The lagoon is subject to ...

The community of Charophytes in the Imboassica coastal lagoon in Brazil (22◦ 24_ S and 42◦ 42_ W) sometimes occupies almost the entire benthic region, and presents a large variation in C:N:P ratio. The effect of drawdown ...

This paper presents the results of a study on the clonal growth of Typha domingensis Pers. in the Imboassica lagoon, in the intervals between four drawdowns. Sampling was performed over a period of two years, from permanent ...

The growth relations of the shrimps Farfantepenaeus brasiliensis (Latreille, 1817) and F. paulensis (Pérez-Farfante, 1967) were evaluated at Imboassica lagoon, Macaé, Rio de Janeiro State, between June 1995 and September ...

Macrobrachium acanthurus Wiegmann, 1836 is a Palaemonidae commonly found in Brazilian coastal environments. At Imboassica lagoon, located in the north of the State of Rio de Janeiro, it is found in two stages of its life ...

Chironomids are the most abundant macroinvertebrates in macrophyte detritus. The goal of this study was to characterize the diversity of these animals in decomposing Nymphoides indica and their relationship with abiotic ...

A Lagoa Imboassica, Macaé, RJ, Brasil (22º50';44º42'W), vem sofrendo vários impactos antrópicos, destacando-se o lançamento de esgotos domésticos in natura e a abertura artificial da barra de areia que a separa do oceano. ...

This investigation of the aquatic macrophyte Eleocharis mutata (L.) Roem. Et Schult. was carried out in Imboassica lagoon, a coastal lagoon in Macaé (22_500S; 44_420W), in the northern part of Rio de Janeiro, Brazil. The ...

This work was performed at Imboassica lagoon (Macaé, RJ), an urban coastal lagoon subject to anthropogenic impacts, such as the inflow of untreated domestic sewage, landfilling in its margins and artificial openings of the ...

The northern part of the state of Rio de Janeiro shelters many coastal lagoons, located, mostly, i the “restinga” strip that stretches from the municipality of Macaé to the municipality of Quissamã During 1995 and 1996 ...

O balneário Cassino localiza-se no município de Rio Grande, na planície costeira sul do Rio Grande do Sul. Apresenta em toda sua extensão canais construídos para escoamento pluvial, onde desenvolvem-se densos estandes ...

This study was carried out at the Biguás and Polegar lakes, both small environments but at different successional stages. The main objective was to characterize the macroinvertebrate community associated to the aquatic ...

Imboassica lagoon is an urban coastal lagoon located in the municipality of Macaé (RJ), which has been exposed to a process of artificial eutrophication through the inflow of untreated sewage, as well as artificial openings ...

The gut content of 495 specimens of Farfantepenaeus brasiliensis, 131 of F. paulensis (Penaeidae) and 102 of Macrobrachium acanthurus (Palaemonidae) were analyzed to establish the composition of their diets F. brasiliensis ...

Objetivo: O objetivo deste trabalho foi descrever o padrão nictemeral e sazonal das variáveis abióticas de um lago raso subtropical. Métodos: O estudo foi realizado no Lago dos Biguás localizado no campus da Universidade ...

Ambientes aquáticos continentais rasos são comuns na Planície Costeira do Rio Grande do Sul, e a macrófita aquática Nymphoides indica é comumente encontrada nas zonas marginais de lagos e banhados. Esta pesquisa foi ...

As alterações na concentração de metano na coluna d’água nos ecossistemas aquáticos estão intimamente ligadas aos processos de produção e consumo deste gás, ou seja, à metanogênese e metanotrofia, pespectivamente. Esta ...

Alterations in methane concentration in the water column of aquatic systems is closely linked to the processes of pro- duction and consumption of this gas, i.e., methanogenesis and methanotrophy respectively. The aim of ...

This study determined the temporal variation of the biomass and the concentrations of carbon, nitrogen and phosphorus in Azolla filiculoides Lam. in a small (0.5 ha) shallow dystrophic lake located in the city of Rio Grande ...