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Economic analysis of Externalities in coastal Mariculture

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Relation http://eprints.cmfri.org.in/7514/
 
Title Economic analysis of
Externalities in coastal
Mariculture
 
Creator Joseph, Juliet
 
Subject Theses
Fisheries Economics
 
Description Coastal mariculture in the strict sense has not taken off in India due to
many techno-bio-socio-economic factors. Hence a thorough economic analysis of
coastal aquaculture in Kerala with specific reference to externalities has been
attempted in the present study. The sample design of the study covers 208 farms
practicing different types of mariculture in four districts of Kerala and the data were
collected during 2001-03.
Pollution was found to be the externality with significant effect,
seriously affecting shrimp culture. This is clearly indicated by the reduction in
production (37%) and reduced lease amount of Rs. 7,5001acre over the last eight
years (1995-2003) in the study area. Although effluent standards have been set for
the seafood industry and processing units, the absence of proper controlling and
monitoring mechanism have led to the free flow of pollutants into the water bodies.
The aver-def expenditure incurred for one acre of shrimp farm was Rs. 615.61
annum. The contingent valuation technique showed that about 50% of the farmers
were willing to pay for getting good quality water for shrimp culture by establishing a
common treatment plant. About 33 % of the farmers opined that polluters have to
pay. The hedonic analysis showed that water quality index and water exchange
index were significant at 1 % level in determining land value, clearly indicating the
influence of water characteristics. In Kerala, polluter pay principle in general was
found to be more effective in dealing with externalities like pollution. Top priority
should be given to establish treatment plants by the industrial units considering the
long term benefits. Local bodies like Panchayats are to be given the rights for
monitoring of these treatment plants to avoid environmental degradation.
The total extent of mangrove areas in and around Cochin backwaters
and Vembanad lake reduced from 70,000 ha in 1975 to a mere 455 ha in 2002. The
mangrove areas were converted for various purposes like coconut plantations,
shrimp culture, reclamation and other development activities. About 21 .5% of the
sample farms were built on mangrove areas. Mangrove destruction due to shrimp
farming was found to be significant in the present study. The cost benefit analysis
and economics of land use options in mangroves studied by different workers
showed clearly that mangroves are not waste lands to be reclaimed.
 
Date 2004
 
Type Thesis
NonPeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/7514/1/TH-139.pdf
Joseph, Juliet (2004) Economic analysis of Externalities in coastal Mariculture. ["eprint_fieldopt_thesis_type_phd" not defined] thesis, Central Institute of Fisheries Education, Mumbai.