渔业资源的共同管理课件

1、An Option for Sustainable Management of Fishery Resources in Deepor Beel Co-management ApproachSujan M. HenkanaththegedaraECS 740: Fall 2007OutlineCurrent status of the fisheryComposition & ProductionFishery regulationProblemsUnsustainable fishing practicesDeclaration of Wildlife SanctuaryPotential

2、impacts of aquaculturePossible solutionsCommunity based co-managementFishery Resources61 freshwater fish species (Saikia 2005)54 indigenous; 5 exotics8 protected species (Wildlife protection Act, 1972) 20 economically important11 collect for ornamental tradeLabeo calbasuBrachydanio rerioNandus nandu

3、sExpectation: 90,000 tons/ year (Goswami and Choudhury 1990) Harvest: 245 kg/hectare (980 tons)Comparatively very high yield (AFDC, Assam)Fishery Production Saikia, P A 2005Fisher CommunityTraditional fishery More than 5000 people/1200 families depend on the fisheryCommunity fishing during winters.

4、Saikia, P A 2005 Saikia, P A 2005Fishery RegulationAuthorityAssam Fisheries Development CorporationState Fisheries Department Lease government parts for commercial fisheryPrivate land owners also lease their private land New ProposalsDevelopment of pen and cage culture for the rearing and propagatio

5、n fish (Gauhati University, Assam)Government Authority and some interested parties propose aquaculture in fringe areasDeclaration of Deepor Beel as a Wildlife SanctuaryProblems IdentifiedUnsustainable fishing practicesDeclaration of Wildlife SanctuaryPossible impacts of garbage dumpingImpacts of sil

6、tationPossible impacts of exotic fishConservation implications for protected speciesPotential impacts of aquacultureProblems IdentifiedUnsustainable fishing practicesDeclaration of Wildlife SanctuaryPossible impacts of garbage dumpingImpacts of siltationPossible impacts of exotic fishConservation im

7、plications for protected speciesPotential impacts of aquacultureUnsustainable fishing practicesImpactsHarmful fishing methods (eg. small mesh size)Potential overharvesting (small size of fish, possibly collapse the fishery)Possible solutionsClosed areas/closed seasonsBan harmful fishing methodsClose

8、 monitoring of illegal fishingFisheries co-management(Myers et al. 1997; Hambright and Shapiro 1997 )Declaration of Wildlife SanctuaryImpactsLimitations to the fisherySerious conflicts between local people and government Social and economical problems in local communitiesPossible Solutions10-20% cor

9、e wildlife sanctuary Rest- Reserved wetland (human activities permitted up to some extent)Potential impacts of aquacultureImpactsIntroduction of exotic speciesPollutionEutrophication (mass fish kills!)Possible SolutionsA proper cost-benefit analysis If necessary, based on native speciesIf necessary,

10、 locate beyond the fringe areas What to do?Beel fishery is still UNDERUTILIZED.Need to manage the fishery PROPERLY,To meet maximum sustainable yield (MSY)To improve the living standardsTo fulfill the local protein requirementTo reduce the unemploymentWhat is the need of AQUACULTURE?What is Co-manage

11、ment?A partnership arrangement between,Government agenciesLocal fisher communityNGOsOther stakeholdersShare the responsibility and authority for the management of a fishery.Integrate local (informal, traditional) and government management systems.Power-sharing between government and fishermen (Pomer

12、oy 1998).What is Co-management?FishersGovernmentAssam Fish. Dev. CooperationState Fish. Dept.Fisheries StakeholdersBoat ownersFish tradersMoney lendersExternal AgentAarnayakGauhati UniversityLocal stakeholdersTourismTransportationFisheries ManagementModified after Pomeroy 1998Co-managementResource-o

13、riented studies to define fishery regulationsMonitoring the fisheryImplementing fishery regulationsOrganize fisheries co-operative societyEnhance fish production and improve living standardsActive government or NGO mediationMaintenance of fisheries co-operative societyProper regulation of fishing pe

14、rmitsBanning harmful fishing methodsSocial welfareModified after Amarasinghe and De Silva 1999AcknowledgementsDr. Achintya N. Bezbaruah, Civil Engineering Department, NDSU for his guidance and supportDr. Prasanta Kumar Saikia, Department of Zoology, Gauhati University, India for kind sharing of data

15、Fellow colleagues for their valuable inputsReferences citedAmarasinghe, U.S. and S.S. De Silva. 1999. Sri Lankan reservoir fishery: a case for introduction of a co-management stratergy. Fisheries Management and Ecology. 6: 387-399.Goswami, B. and A.S. Choudhury. 1990. Deepor Beel- A gold mine for so

16、cio-economic upliftment. Press release. INSTER/ Deepor III/ 89- Misc. 3pp.Hambright, K. D. and J. Shapiro. 1997. The 1993 collapse of the Lake Kinneret bleak fishery. Fisheries Management and Ecology. 4: 275-283,Myers, R. A., J. A. Hutchings and N. J. Barrowman. 1997. Why do Fish Stocks Collapse? The Example of Cod in Atlantic Canada. Ecological Applications. 7: 91-106.Pomeroy, R. S. 1998. A process for community-based fisheries co-management. Naga. January-March. ICLARM. 71-76.Saikia, P.K. 2005. Qualita