Toxicidade de águas e sedimentos em um rio afetado por atividades mineradoras pretéritas

The Ribeira de Iguape River basin received intense mining activities for lead exploiting and, as a result, the river received the discharges of estimated amounts of 5.5 tons/month of material rich in As, Ba, Cd, Pb, Cu, Cr and Zn. In this article, the toxicity of waters and sediments collected in Ribeira de Iguape River was assessed aiming to estimate environmental quality. Three sampling campaigns were conducted, from 2009 to 2010. Toxicity tests with the cladoceran Daphnia similis were done for water samples and for sediments, in this case using sediment-water interface exposure. Results showed in general absence of toxicity for sediments and waters, and only eventually were acute effects registered (marginal toxicity). Results are consistent with the conditions indicated by the literature, of low concentrations of metals in waters and sediments; however they differ from the monitoring made by the state environmental agency, which registered chronic toxicity. The occurrence of eventual acute toxicity indicates that although Ribeira de Iguape River quality is being restored, conditions still are not totally under control.

The present state and future prospects of the environment in Latin America and the Caribbean

Includes bibliography

Desenvolvimento de interface amigável de rotina em linguagem c++ para o processamento aritmético e estatístico de dados censitários

A routine was developed in C++ for the processing of social and environmental census data acquired by the Brazilian Institute of Geography and Statistics (IBGE). The routine employs a simple graphical environment. The data generated are presented in a tabular format, which facilitates a broad and objective view of the values, and provides a convenient means of querying the database. The source code used to develop the routine permits updates and changes, as required by the user. Statistical and mathematical analysis enables the generation of social and environmental indicators, together with quantitative and qualitative classification of the socio-environmental quality of the region analyzed. As an example, the routine was applied using census data for the city of Sorocaba (São Paulo State, Brazil), including conditions of household occupation, water supply, sanitation, level of education, income, and other factors. It is envisaged that the proposed analytical model will assist professionals from different fields of research and teaching to develop urban planning and management strategies.

Green supply chain management in local and multinational high-tech companies located in Brazil

The objective of this article is to analyse how green supply chain management (GSCM) practices are being adopted by some high-tech companies located in Brazil. The research was conducted using the case study approach, focusing on eight companies that are representative of this sector. The main results are: (a) the most adopted GSCM practices in the studied high-tech companies located in Brazil are internal environmental management, investment recovery and reverse logistics and (b) Brazilian environmental legislation and international policies are very important in driving the adoption of GSCM practices. The internationalisation of companies was also found to be a variable that interferes with the adoption of GSCM practices. This is one of the first studies that examine the relationship between GSCM and the internationalisation of companies located in Brazil. © 2013 Springer-Verlag London.

Qualidade física de ovos armazenados em diferentes condições de embalagens sob temperatura ambiente

The objective was to evaluate the internal quality of white-shelled consume eggs, sanitized or not, stored under different packaging conditions at room temperature. It was used 300 eggs, distributed in a completely randomized experimental design in a 3×2×4+1 factorial arrangement, three packaging conditions (PVC film, partial vacuum, partial vacuum with oxygen gas absorber), storage period (7, 14, 21 and 28 days), sanitized or not, and control (fresh eggs), with four repetitions. At the end of each period the analysis were performed. Partial vacuum condition was able to maintained Haugh unit, and promoted the best results for yolk index. The weight maintenance was better when packaged under vacuum, with or without O2 sachets absorbers. Lower values of water activity were obtained in eggs packed in PVC film, and when the sanitation was performed. It can be concluded that the internal egg quality decreases with storage time sharper in the eggs packed in PVC film, because vacuum has preserved some features of them. With sanitation, the storage conditions of eggs in PVC film should be improved because its internal quality decrease was greatest.

Ecotoxicological assessment of sediments from an urban marine protected area (Xixová-Japuí State Park, SP, Brazil)

This study aimed to evaluate the environmental quality of the marine portion of Xixová-Japuí State Park (XJSP), an urban marine protected area, which is influenced by multiple contamination sources, by using ecotoxicological and geochemical analyses. Sediments were predominantly sandy, with low CaCO3 and organic matter contents, and presented contamination by metals (Cd,Cu,Zn). Acute toxicity was detected in three tested samples, and copepod exposed to sediments from four stations exhibited lower fecundities, despite the absence of significant effects. Contamination and toxicity seemed to be associated, suggesting that the environment is degraded and presents risks to the biota. Whole sediment TIE indicated ammonia as a main responsible for toxicity, suggesting sewage is a main contributor to sediment degradation. As external contamination sources seem to be negatively influencing the sediment quality, the park conservation objectives are not being fully reached, demanding actions to mitigate impacts. © 2013 Elsevier Ltd.

Avaliação de biomarcadores de contaminação em tilápias do nilo (oreochromis niloticus) expostas aos herbicidas combine *500sc (tebutiurom) e velpar k® wg (diurom + hexazinona)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Meio ambiente e agricultura na microbacia hidrográfica do Córrego Palmitalzinho - Regente Feijó/São Paulo

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Qualidade ambiental urbana em Guararapes - SP

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudos para implantação de reservas legais: uma nova perspectiva na conservação dos recursos naturais

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Planejamento ambiental urbano na microbacia do Córrego da Colônia Mineira-Presidente Prudente/SP

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Metodologia para avaliação de desempenho ambiental em aeroportos e sua aplicação no Aeroporto Internacional de Viracopos, Campinas (SP)

Pós-graduação em Geologia Regional - IGCE

Fragilidade ambiental e qualidade dos solos em duas bacias hidrográficas de uso rural, em Ibiúna, SP

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Identificação e disseminação de práticas ambientais na cadeia de suprimento: estudo de casos em empresas manufatureiras do segmento de informática

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)