渔业资源的共同管理（PPT）.pptVIP

An Option for Sustainable Management of Fishery Resources in Deepor Beel Co-management Approach Sujan M. Henkanaththegedara ECS 740: Fall 2007 Outline Current status of the fishery Composition Production Fishery regulation Problems Unsustainable fishing practices Declaration of Wildlife Sanctuary Potential impacts of aquaculture Possible solutions Community based co-management Fishery Resources 61 freshwater fish species (Saikia 2005) 54 indigenous; 5 exotics 8 protected species (Wildlife protection Act, 1972) 20 economically important 11 collect for ornamental trade Fishery Production Expectation: 90,000 tons/ year (Goswami and Choudhury 1990) Harvest: 245 kg/hectare (980 tons) Comparatively very high yield (AFDC, Assam) Fisher Community Traditional fishery More than 5000 people/1200 families depend on the fishery Community fishing during winters. Fishery Regulation Authority Assam Fisheries Development Corporation State Fisheries Department Lease government parts for commercial fishery Private land owners also lease their private land New Proposals Development of pen and cage culture for the rearing and propagation fish (Gauhati University, Assam) Government Authority and some interested parties propose aquaculture in fringe areas Declaration of Deepor Beel as a Wildlife Sanctuary Problems Identified Unsustainable fishing practices Declaration of Wildlife Sanctuary Possible impacts of garbage dumping Impacts of siltation Possible impacts of exotic fish Conservation implications for protected species Potential impacts of aquaculture Problems Identified Unsustainable fishing practices Declaration of Wildlife Sanctuary Possible impacts of garbage dumping Impacts of siltation Possible impacts of exotic fish Conservation implications for protected species Potential impacts of aquaculture Unsustainable fishing practices Impacts Harmful fishing methods (eg. small mesh size) Potential overharvesting (small size of fish, possibly collapse the fishery) Poss