Browsing by Author "Mbwambo, Zawadi Daudi"

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The economic impacts of mangrove management project in Tanga, Tanzania
(Sokoine University of Agriculture, 2007) Mbwambo, Zawadi Daudi
This study whose aim was to assess the economic impact of the Mangrove management project in Tanga Tanzania was based on questionnaire survey to households head, informal survey and secondary data. Data were collected from a random sample of 104 household heads. PRA., questionnaire survey and checklist was the main tools used in collection of socio-economic data. Data from household survey were analyzed using Statistical Package for Social Science (SPSS). Cross tabulations were performed to establish significant relationships between villages responses. Content analysis was also used for qualitative data. The result of the study demonstrste the importance of the mangrove ecosystem resources to the livelihood of the local communities. About 40% of people interviewed depend on fisheries as main source of income and fisheries contributes about 48% of the total family income in the study area. Out of 104 respondents about 84% of them indicated that there is a direct relationship between the restoration of the mangrove and increase in fish catch. A total of 1500ha of degraded mangrove area have been restored through replanting while about 80 ha of farmland have been planted w'ith non-mangrove poles and fuelwood trees species. About 68% of the residential houses in the study area were constructed using mangrove poles. Evidence indicates that mangroves poles will continue to be the main construction material due to the prevailing economic hardship in the study area. Majority of the respondents (82%) indicated increased demand in quantity and quality of mangrove poles. Using Net Present Value (NPV) as a criterion the project was found to be economically efficient at a rate of discount of 10% for a 20 years time horizon. The net present value was about TAS 618.7 millions at the discount rate of 10% for a 20 years time horizon but dropped by 76.5% when the discount rate was increased to 20%. The internal rate of return was about 33%. Sensitivity analysis indicated that the projects NPV would fall to zero if the project benefit were reduced by 54.3%.