Commenced in January 2007
Paper Count: 31430
Estimation of Production Function in Fishery on the Coasts of Caspian Sea
Abstract:This research was conducted for the first time at the southeastern coasts of the Caspian Sea in order to evaluate the performance of osteichthyes cooperatives through production (catch) function. Using one of the indirect valuation methods in this research, contributory factors in catch were identified and were inserted into the function as independent variables. In order to carry out this research, the performance of 25 Osteichthyes catching cooperatives in the utilization year of 2009 which were involved in fishing in Miankale wildlife refuge region. The contributory factors in catch were divided into groups of economic, ecological and biological factors. In the mentioned function, catch rate of the cooperative were inserted into as the dependant variable and fourteen partial variables in terms of nine general variables as independent variables. Finally, after function estimation, seven variables were rendered significant at 99 percent reliably level. The results of the function estimation indicated that human resource (fisherman quantity) had the greatest positive effect on catch rate with an influence coefficient of 1.7 while weather conditions had the greatest negative effect on the catch rate of cooperatives with an influence coefficient of -2.07. Moreover, factors like member's share, experience and fisherman training and fishing effort played the main roles in the catch rate of cooperative with influence coefficients of 0.81, 0.5 and 0.21, respectively.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1060088Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1715
 Bakhshode, M. A, 1992.Agricultural Economy, Shahid Bahonar University, Kerman, pp. 225-229.
 Hajian, S.P, 1995. The study of Acipenseridae's population dispersal of in Gilan's waters, proceeding of the 3rd international conference of fisheries, Tehran, pp.217-223.
 Horn, H.S, 1952, Measurement of qualitative variables in econometrics studies, Am. Nat, 100:419-424.
 Jahanifar, K. and Z. Abedi, 2009. Estimation of osteichthyes Catch Function and Investigation of Effective Economic Factors of Fishing in South- eastern of Caspian Sea, World Apply Science Journal,7(12) :1512-1515.
 Pidal, J. and F. Owazem, 1987. Production Economy, Tehran University Publication Center, Tehran, pp.33-35.
 Mortazavi, A.S, 2001. Estimation of shrimp production and supply function in the southern provinces of Iran, the Agricultural economics journal, 26(16):220-227.
 Mostafazade, R. S, 1991. The study of contributory factors in the catch of beach net cooperatives in the southwestern coasts of the Caspian Sea, proceeding of the 2nd national conference of fisheries and sustainable development, Tehran, pp.178-181.
 Riahi, A.R.2001. Determination of the Budgel and changes of Lead and Cadmium in tissues of Different fish species in Haraz River, Journal of Environment studies, 27(27):15-22.
 Soltani, G. and B. Najafi, 1994. Agricultural Economy, Tehran University Publication Center, Tehran, pp.202-213.
 Thorne, C. R., 2008. Production Function in agriculture sector in Malaysia, Proceedings of the 1st international Symposium on agriculture and fisheries, Malaysia, pp. 453-461.