Analysis of Determining the Level of Feasibility of Skipjack Fishing Potential Zones (ZPPI) in Barru Waters, Makassar Strait

Abstract

This research aims to analyze the oceanographic conditions of catches in Barru waters, as well as analyze the feasibility of ZPPI of Skipjack based on image data in Barru waters. The research was carried out in September 2022 – June 2023 using a survey method by collecting two types of datasets, both primary and secondary. The data analysis used in this research is GAM (Generalized Additive Model), PHI (Pelagic Habitat Index), and Cohen's Kappa. The research results show that the oceanographic parameters that have a positive effect on skipjack tuna are chlorophyll-a (Chl-a), salinity, and current speed, with an R2 (adj) value of 0.211, which means the presentation of the influence of the dependent variable (chlorophyll-a, salinity, and speed). current) on the independent variable (catch of skipjack tuna) was 24.8% and the rest was influenced by other factors. Mapping the ZPPI of skipjack tuna based on the PHI value, it was found that the red color on the map was considered to be the area that best suited the environmental preferences of skipjack tuna so it was indicated as a potential area. PHI during September – June 2023 in the range 0.06 – 1.00. As for the feasibility of the ZPPI, which is measured based on the size of the fish, and the coordinate point which is right in the ZPPI, shows a value of 0.422 (good) because the k value>0.4 means that the reliability of the agriment between the two measurements is good, so the ZPPI of skipjack tuna can be said to be suitable for fishing.