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 Ilhaus tours, and Manaus tours information: Monitoring marine mammal bycatch in fishery operations onboard is a risky mission. Aubin 1987, odell 1991, geraci and lounsbury 1993, santos 1999). These compounds come from the illegal use of pesticides in agricultural areas close to rivers draining into local estuarine waters, as well as from the industrial complex area of cubat�o, located 200km northwards. Most information on the species comes from specimenscollected throughout the amazon basin. These surveys will be conducted by car and by bicycle. It seems that the marine tucuxi is common but not numerous in such areas. Volunteers will learn about the animals, insects, and snake, and other organisms that should be treated with caution. All group members will be photographed, as often as possible. A resident fisherman reported that fishermen are afraid sea lions will damage their nets or threaten their crew so they sometimes hit the sea lions with paddles or even shoot them.
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Methods for data collection include boat surveys aboard a 5. From the scarce available data, abundance estimations in an area vary withmethods employed. Their mating system is promiscuous, and calving intervals probably last from 2 to 4 years (santos et al. Vivian carregal is a 23 year-old student who is concluding her undergraduate studies on veterinary medicine. And is recorded onthe dolphin data sheet. Group size and composition (calves, juveniles and adults) will be reported, as well as the following environmental data: Exact location (with the help of a manual gps garmin�12), water depth (with a humminbird 100 sx echo-sounder), water transparency (with a secchi disk), "sea" conditions (beaufort scale), wind speed and direction (with a digital anemometer), air and water temperature (with specific thermometers) and water salinity (with a manual refractometer). |
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