Bio socio economic evaluation of artisanal fisheries of Barra Bonita reservoir (SP) / Avaliação biossocioeconômica das pescarias artesanais da represa de Barra Bonita (SP)

AUTOR(ES)
DATA DE PUBLICAÇÃO

2010

RESUMO

The artisanal or small scale fisheries are practiced in small reservoirs, with an operation area restricted and familiar labor. It´s common in inland waters and the fish caught is an important source of protein for people who depend on them and provide economic returns to the fisher, despite the presence of intermediaries in the marketing of fish. The Barra Bonita reservoir (SP) have supported the fishers from other regions and we considered the hypothesis that Barra Bonita reservoir, because its trophic characteristics of water, intermediary in relation to the Billings (upstream) and the Complexo de Urubupung (downstream), also has fisheries production and profitability intermediate. The social aspects, the yields, effort and income were derived from the application of questionnaires between 2007 and 2008. The analysis indicated that the fisheries were practices mostly by young men (between 30 and 39 years) who had little schooling. The presence of an intermediary was in several dimensions: sometimes he was the provider of food, sometimes supplies and also fishery equipments, and many fishers didn´t made distinction between the figure of the intermediary and the employer. Furthermore, there was mention of the close dependence on the dwelling and also the provision of food, sticking strongly to the production of intermediate. The principal specie was tilapia and the ANCOVA model indicated that fish production depended on physiographic characteristics and fluctuations caused by seasonality. There were differences in the yields only during the dry season in the Piracicaba river, with higher catches during the rainy season. Studies on the fisheries´ costs indicated that the main component is the fuel, despite the short distance to their fisheries. Profits are derived from the tilapia´s yields, which no commercial value; ensure the income of fishers due to its constancy in the catch. The ANCOVA model showed that profits depend on the education level of fishers. Fishers indicated the decline of fish stocks and believed that if there was effective supervision, predatory fisheries could be curbed. Fishers showed the conditions to which they were relegated and his desire to avoid marginalization of the category. The management policies, especially the co-management, should therefore also consider this factor and its ally the fisher to maintain the activity and the environment.

ASSUNTO(S)

fishes ancova biossocioeconomia fishery análise econômica pesca ancova bio socio economics economic analysis peixes

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