SPATIAL PLANNING OF COASTAL CAGE AQUACULTURE IN INDONESIA BASED ON SIMULTION MODELS  

This paper presents results of the development and application of simulation models to guide marine aquaculture development in coastal areas in Indonesia. The effectiveness of systematic procedures of wider applicability based on hydrodynamics for site selection and estimation of carrying capacity ate feasibility of projects is demonstrated. Procedures relating a non-dimensional group consisting of modelled current velocities and depths at location of fish farms with an approximation for sustainable load on the seabed are introduced. The maximum allowable fish farm production is obtained on the basis of modelled current velocities at the location of farms in conjunction with user-defined threshold value based on accumulation of particulate waste matter. In this way the ecological carrying capacity of each farm in the environment can be assessed ate feasibility stage. The procedures have been applied to several sites in Indonesia including Riau Archipelago, Bali and Sumbawa. In this paper results of the application of procedures are demonstrated for a coastal cage aquaculture facility in the North of Bali. Sediment monitoring is currently being conducted underneath farms to assess the effectiveness of the procedures. A detailed description of the approaches adopted leading to the designation of aquaculture management areas are presented. Strategies for the setup of models in remote areas using data from global databases and large-scale oceanographic models in conjunction with data from remote sensing are presented.