engleski

The Scenario 0 of Schaefer production model of sardine in the Eastern Adriatic Sea

In this paper Schaefer production model of sardine in Adriatic Sea was presented by System dynamics methodology. Sardine population was chosen due to its great economic importance to Croatian fishing. The qualitative and quantitative models of observed sardine population were developed. Different scenarios were made using available biological data for sardine in the Adriatic Sea, but only one scenario is given in this paper. That scenario (Scenario 0) presented behavior dynamics of sardine population when there was no fishing involved. The results of Scenario 0 showed that population had exponential growth in the beginning. The equilibrium (equal to carrying capacities) was achieved in the moment when rate of natural growth equaled the rate of natural death. This S-shape curve is characteristic for biological system in the equilibrium.

Schaefer production model; sardine population; the Adriatic Sea; System dynamics

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