Estudos aplicados à recuperação biológica da Baía de Guanabara

Oliveira, Lejeune P. H. de; Krau, Luiza

doi:10.1590/s0074-02761976000200001

Cited by 4 publications

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“…The industrial process intensified, but urban expansion did not receive financial support for the implementation of an infrastructure capable of meeting the needs of the population, whether in terms of decent and safe housing or in terms of environmental safety. This situation influenced the poor quality of the environment both inside the Bay and in the river basins that flow into it (Oliveira & Krau, 1976;Valladares, 2000).…”

Section: The Environmental Impor-tan-ce Of Guanabara Baymentioning

confidence: 99%

The Pollution of the Guanabara Bay in the Context of Food Security

Madeira¹

2022

JBNS

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The environmental pollution of Guanabara Bay, characterized by the deforestation of the surrounding area, dumping of sewage and industrial waste, has been causing damage to the environment over the years. The production of fish and bivalve molluscs (oysters and mussels) has been negatively affected by pollution, either by reducing the amount of fauna or its microbiological quality, making them unsafe foods from a public health point of view. In addition to food poisoning, there is a risk of intoxication by chemical pollutants (pesticides and heavy metals), substances with high carcinogenic power. All these damages are, to a greater or lesser degree, caused by anthropogenic actions and one of the ways to minimize the damage caused by environmental pollution includes the adoption of public policies for preservation, environmental conservation and the adoption of adequate technical procedures that help in maintaining safety. food to promote health.

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Section: The Environmental Impor-tan-ce Of Guanabara Baymentioning

confidence: 99%

The Pollution of the Guanabara Bay in the Context of Food Security

Madeira¹

2022

JBNS

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“…Until recently, studies of macrozoobenthos conducted in Guanabara Bay have focused mainly on biotopes along its shorelines, such as beaches, mangrove forests and islands (OLIVEIRA, 1958;OLIVEIRA;KRAU, 1976;MACIEL, 1979;SILVA et al, 1980;VERGARA FILHO et al, 1997). Only one study has examined the spatial distribution and function of sublittoral macroinfauna throughout the bay (FLORES JR. et al, 1979).…”

Section: Introductionmentioning

confidence: 99%

Polychaete assemblage of an impacted estuary, Guanabara Bay, Rio de Janeiro, Brazil

Santi

Tavares

2009

Braz. j. oceanogr.

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(Avenida Nazaré, 481, São Paulo, SP, Brasil) mdst@usp.br A B S T R A C T Thirty-eight stations were sampled in Guanabara Bay, Rio de Janeiro, Brazil, to assess the spatio-temporal diversity and biomass of sublittoral polychaetes. Samples were collected during the dry (September 2000) and rainy season (May 2001) in shallow sublittoral sediments. The polychaete spatial composition showed a heterogeneous distribution throughout the bay. A negative gradient of diversity and biomass was observed towards the inner parts of the bay and sheltered areas. A wide azoic area was found inside the bay. Some high-biomass and low-diversity spots were found near a sewage-discharge point. In these areas, the polychaete biomass increased after the rainy season. A diversified polychaete community was identified around the bay mouth, with no dramatic changes of this pattern between the two sampling periods. Deposit-feeders were dominant in the entire study area. The relative importance of carnivores and omnivores increased towards the outer sector, at stations with coarse sediment fractions. Guanabara Bay can be divided into three main zones with respect to environmental conditions and polychaete diversity and biomass patterns: A) High polychaete diversity, hydrodynamically exposed areas composed of sandy, oxidized or moderately reduced sediments with normoxic conditions in the water column. B) Low diversity and high biomass of deposit and suspension-feeding polychaete species in the middle part of the bay near continental inflows, comprising stations sharing similar proportions of silt, clay and fine sands. C) Azoic area or an impoverished polychaete community in hydrodynamically low-energy areas of silt and clay with extremely reduced sediments, high total organic matter content and hypoxic conditions in the water column, located essentially from the mid-bay towards the north sector. High total organic matter content and hypoxic conditions combined with slow water renewal in the inner bay seemed to play a key role in the polychaete diversity and biomass. Sedimentation processes and organic load coming from untreated sewage into the bay may have negatively affected the survivorship of the fauna. R E S U M OTrinta e oito estações foram amostradas na Baía de Guanabara, Rio de Janeiro, Brasil, no intuito de descrever a diversidade e biomassa de poliquetas sublitorais. As coletas foram realizadas em dois períodos distintos do ano: seco (Setembro 2000) e chuvoso (Maio de 2001). A distribuição espacial dos poliquetas sublitorais demonstrou ser nitidamente heterogênea na Baía de Guanabara. Um gradiente negativo de diversidade e biomassa foi observado em direção as partes internas e protegidas da baía. Foi encontrada uma grande área azóica dentro da baía. Por outro lado, algumas áreas com alta biomassa e baixa diversidade foram encontradas nas proximidades de locais com despejo de esgoto urbano não tratado. Nestas áreas foi observado aumento da biomassa de poliquetas no período chuvoso. Uma comunidade diversificada foi identificada na...

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“…No Brasil, os primeiros trabalhos sobre recuperação de manguezais, ocorreram nos estados da Bahia, Rio de Janeiro e São Paulo (Oliveira, 1975;Oliveira & Krau, 1976;Moscatelli et al e 1997César, 1995;Orge, 1997;Menezes et al 1998e Abrahão, 1998.…”

Section: Introductionunclassified

“…Os trabalhos de Oliveira (1975) e Oliveira & Krau (1976) são os primeiros a apresentar preocupações sobre recuperação de manguezais no Brasil, fazem parte de uma série de publicações sobre a Baía de Guanabara, que a exemplo de outros autores estrangeiros, recomendavam o plantio de árvores de mangue. relataram para o período de 1989 a 1992, o plantio de Laguncularia racemosa, Avicennia schaueriana e Rhizophora mangle, na Lagoa Rodrigo de Freitas (RJ).…”

Section: Introductionunclassified

Recuperação de manguezais: um estudo de caso na baixada santista de São Paulo, Brasil

Menezes¹,

Schaeffer-Novelli²,

Poffo³

et al. 2005

Braz. J. Aquat. Sci. Technol.

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We wanted to know about the possibility of mangrove recovery in Cubatão, Baixada Santista, São Paulo. We planted propagules and transplanted seedlings of Rhizophora mangle in three experiment stands in Cubatão. The results showed higher survival and development in two stands. After, we made preliminaries plantations with another specie of mangrove Laguncularia racemosa. Then, we and local fisherman community planted R. mangle in bigger stands. The results and conclusions of this job are important for contribute politics of development and preservation in Baixada Santista, São Paulo.

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Estudos aplicados à recuperação biológica da Baía de Guanabara

Cited by 4 publications

References 0 publications

The Pollution of the Guanabara Bay in the Context of Food Security

The Pollution of the Guanabara Bay in the Context of Food Security

Polychaete assemblage of an impacted estuary, Guanabara Bay, Rio de Janeiro, Brazil

Recuperação de manguezais: um estudo de caso na baixada santista de São Paulo, Brasil

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