اقتصاديات مصايد بحيرة مريوط و سبل تنميتها

Abstract EN

Research aimed at identify the current status and future prospects of Lake Mariut fisheries in order to identify the problems and obstacles to the development of production and increase it by identifying and finding appropriate solutions which will ultimately reflect the possibility of achieving the sustainable development target of this lake through the following objectives: (1) Study the economic features of Lake Mariut fisheries, (2) Evaluation of the economic performance of the fishing methods operating in the lake, (3) Studying the determinants of the sustainable development of Lake Mariut fisheries, and (4) To reach some recommendations and suggestion due to the obtained results, this can benefit the Egyptian economic policy makers in this field.

The study reached the following conclusion: (1) The production of tilapia and cat fish represents about 98% of the total fish production in Lake Mariut during the period of study (2001 – 2015).

The rate of change of tilapia was about 29.9 % for the annual average, while In cat fish was about 31% for the annual average, which in turn leads to increased investments in tilapia.

The rate of change in cat fish was higher than in tilapia due mainly to that cat fish resistant high levels of pollution and live on the bottom of the lake, (2) The total fish production from Lake Mariut takes a decreasing trend at the beginning of the study period and then increases at its end, (3) The amount of fish production from Lake Mariut is expected to reach 18.2 thousand tons in 2020, with an increase about 47.82%, (4) The optimal biological production (MSY) was estimated by about 6.3 thousand tons using an optimum effort (Fmax) estimated by 947 boats, which means that the lake will be overfished in years: 2012, 2013, 2014, and 2015, (5) fish production in the lake is closely associated by each: The number of fishing bouts, the number of fishermen, the price of tons of lake fish, the water area of the lake and the level of water in the lake that has been shown that there is an inverse relationship between the area and production where the decrees area leads to increased production due to the phenomenon of overfishing, In the remaining area of the lake with increased pollution, (6) The economic assessment of fishing boats operating in Lake Mariut found that flocca is more economically efficient than other bouts, as it operates in deep areas and with a highly selective fishing craft such as the gel net (nasha), (7) The most important problems and obstacles that prevent the effective contribution of the lake to the development of Egyptian fish production are: pollution problems in various forms (sewage, agriculture, industrial), low water level of the lake and spread of aquatic plants In the lake's water surface, and (8) Lake Mariut fisheries are developed through a series of development programs: environmental program, productive and social program, tourism development, and the program for the development of aquaculture in the lake