3 resultados para Modèle conceptuel de Roy

em Aquatic Commons


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The authors have developed the method used by Pianet and Le Hir (Doc.Sci.Cent. ORSTOM Pointe-Noire, 17, 1971) for the study of albacore (Thunnus albacares) in the Pointe-Noire region. The method is based on the fact that the ratio between unit of effort and number of fish for two fishing gears is equal to the ratio of their catchability coefficients.

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This is the Roy of the Rivers (cartoon) report produced by the National Rivers Authority (NRA) South West Region. This NRA document is a leaflet comic format which looks at the fishing and safe issues in rivers. This comic highlights the community policing to help guard the water environment. It gives a 24 hour emergency number and three steps to be followed in case of pollution, dead, distressed fish or suspects someone of illegally catching or selling fish.