Pemetaan Lokasi Fishing Ground dan Status Pemanfaatan Perikanan di Perairan Selat Madura

Abstract

This research aims at finding the map of waters quality to predict
fishing ground, examining the determinant of modeling parameter of fish catching
region, analyzing catch unit effort (CpUE) and status of fish utilization. Mapping
waters quality parameter is constructed with method of field sample data
interpolation. Besides, the mapping of surface temperature and chlorophyll is
extracted from satellite image Landsat. ETM+. In addition, the mapping of
catching region is resulted in scoring and weighting factors. Accuracy test is
done by method of RMSE. Fishery utilization status is acquired from method of
approaches holistic (production surplus model). Map waters salinity at straits
Madura ranges between 27 ppm - 46 ppm, pH range from 8-9, brightness
ranges from 0-2 m. Sea level temperature from image landsat in dry season
ranges from 24,1 0C - 27,3 0C in rainy season between 24,7 0C - 28,6 0C.
Optimum temperature in rainy season is lower than in dry season. Chlorophyll in
dry season ranges between 0 mg/m3 - 19,6 mg/m3, in rainy season between -
0,02 mg/m3 - 41,95 mg/m3. In dry season, the most appropriate catching region
is 58,04 %, appropriate region 36,99% and inappropriate region 4,96 %, while in
rainy season, inappropriate region achieves 94,44 %, appropriate 2,89 % and
inappropriate 2,65 %. Sea level temperature accuracy test gets RMSE 2,32 and
for chlorophyll content 2,31. Fishery estimation result pelages get CpUE 0.10
ton/trip with utilization status indicating over-fishing in tahun1997 and fishery
demersal CpUE 0.03 ton/trip with utilization status indicating a surplus in
catching in last three year.