Sustentabilidade de agroecossistemas: um estudo de caso no estuário do rio São Francisco

• Autor(a) principal: Cunha, Cleidinilson de Jesus
• Data de Publicação: 2006
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFS
• Texto Completo: https://ri.ufs.br/handle/riufs/6629
• topic: Agroecossistemas; Sustentabilidade; Estuário; Rio São Francisco; Agroecosystems; Sustainability; Estuary; São Francisco River; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA

The present work was carried out in order to study the agro ecosystems sustainability in the São Francisco River estuary, through a system analysis from the characterization of the structure, function and properties (sustainability, productivity, stability, equitability and autonomy) of the local agro ecosystems. From the recent changes to the environmental dynamics and its implications on the socioeconomic and cultural organization represented by fishers, crab catchers. Also the meaning of the environmental ethics on the agro ecosystems organization on the behavior of the social actors facing the exploitation of the fish resources (fish and crab) being an obstacle to the sustainable development. Field survey was carried out on the second semester of the year 2005 by the application of techniques such as direct observation by 52 semi-structured interviews with fishers, crab catchers and urban population from the village of Brejo Grande. The identification and characterization of the agro ecosystems from the estuary occurred by the application of the properties defined by Conway (1987) and Marten (1988). The regularization of the São Francisco river discharge from the construction of the electric power dams and also the recent introduction of shrimp projects have led to serious changes on the environment dynamic and consequently a reduction on the availability of fish and crab. This has brought dramatically impacts on the production and social organization, marginalizing traditional ways of natural resources use, socio-cultural diversity and the historical knowledge built by the local population. These facts create problems to the development of sustainable policies on the estuary. The behavior on the use of the natural resources can be identified in two different ways. The first one based on the traditional cartesian paradigm also mecanicist. On the other hand there is this ethical resistant behavior, based on the respect for nature, and the comprehension of interactions to the natural elements.