In the Camamu-Almada basin, marine fishery is exclusively small-scale, with several structural deficiencies such as boats with low or absent navigational technology, lack of credit and low income. Local fishers complain that shrimp and lobster trawling fishing is the main factor responsible for low stock abundance, but they still persist in these activities as these two species command the highest market prices. So they feel that the target species are already over-fished. We suggest that proper management action, alternative ways of income generation and the payment of job insurance would help to mitigate the problem.Keywords: tropical small-scale marine fisheries, tropical marine fishes, southeast state of Bahia, Brazil.
Caracterização das pescarias de pequena-escala na bacia deCamamu-Almada no sudeste da Bahia, Brasil
ResumoNa bacia Camamu-Almada, as pescarias marinhas são exclusivamente de pequena-escala, com várias deficiências estruturais: com barcos quase sem nenhuma tecnologia de auxílio à navegação, falta de crédito e baixa lucratividade. Os pescadores locais reclamam que a pesca de arrasto dirigida a camarões e lagosta é a principal responsável pela baixa abundância dos estoques preferenciais, mas como eles ainda têm alto preço no mercado, essa estratégia de pesca ainda persiste. Assim, eles percebem que esses estoques estão sobre-pescados. Sugerimos que medidas apropriadas de manejo local, ocupações alternativas e o pagamento do seguro desemprego em dia para os pescadores ajudariam a mitigar essa situação.Palavras-chave: pescarias tropicais marinhas de pequena escala, peixes marinhos tropicais, sudeste da Bahia, Brasil.
Eucalyptus bark is a waste generated in large volume and has been used as a source of energy. This study tries to use the Eucalyptus sp. bark as a source of raw material for the charcoal production and to study the influence of pyrolysis temperatures on charcoal properties. Charcoal was produced at different temperatures: 300, 400 and 500 °C, and their properties were determined by proximate analysis, higher heating value and thermogravimetric analysis. It was observed that higher pyrolysis temperature resulted in increase of the fixed carbon content and higher heating value. In the thermogravimetry and derivative thermogravimetry curves it was possible to determine the differences in the thermal stability of charcoal produced. It can be concluded that the eucalyptus bark charcoal is an alternative for the energy reutilization of this waste and also can be used as charcoal for heating.
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