MUSIM DAN DAERAH PENANGKAPAN IKAN CAKALANG DI LAUT BANDA DAN SEKITARNYA PROVINSI MALUKU

Suhu permukaan laut (SPL) dan klorofil-a (CHL) merupakan parameter oseanografi yang penting dan sering digunakan untuk memprediksi daerah penangkapan potensial menggunakan remote sensing. Tujuan penelitian ini adalah menganalisis dan memetakan daerah penangkapan ikan cakalang di Laut Banda dan sekitanya Provinsi Maluku berdasarkan perubahan musim. Data SPL dan CHL diambil dari analisis data citra satelit, hasil observasi sensor Aqua MODIS level 3 dengan resolusi spasial 4 km dan resolusi temporal bulan dan musiman. Data citra dianalisis dengan program SEADAS 5.2. Hasil analisis menunjukkan suhu permukaan laut (SPL) dan konsentrasi klorofil-a di Laut Banda dan sekitarnya mengalami fluktuasi dari bulan ke bulan. Kondisi ini mempengaruhi fluktuasi SPL dan CHL musiman. Rata-rata suhu tertinggi berada pada musim barat dan pancaroba pertama sedangkan suhu terendah di musim timur. Berbeda dengan konsentrasi klorofil-a, tertinggi pada musim timur dan terendah pada musim pancaroba pertama. Ada korelasi antara peningkatan suhu dan penurunan konsentrasi klorofil-a. Suhu permukaan laut juga memiliki korelasi negatif dengan CPUE dan mempengaruhi pembentukan daerah penangkapan ikan. Daerah penangkapan cakalang di Laut Banda dengan CPUE tertinggi pada semua musim ada di sebelah barat Pulau Seram sekitar Pulau Buano, Kelang dan Manipa atau pada posisi 126,7º-128º BT dan 2.6º-3.4º LS, di sekitar Laut Banda pada posisi 127º-130,3º BT dan 3.2º-4º LS.Sea surface temperature (SST) and a-chlorophyll (CHL) were important and they were often used to predict potential fishing ground by using remote sensing. The objectives of the present study were analysis and mapped fishing ground of skipjack in the Banda Sea and its surrounding Moluccas Province according to monsoon. SST and CHL data were taken from satellite citra data analysis, observed by sensor Aqua MODIS level 3 with spatial resolution 4 km and temporal resolution month and monsoon. Citra data were analyzed by using SEADAS 5.2. software. The analysis showed that sea surface temperature (SST) and a-chlorophyll concentration in the Banda Sea and its surrounding fluctuated from month by month. This condition affected seasonal fluctuation of SST and CHL. The average of highest temperature was in West monsoon and first transitional monsoon whereas the lowest was in East monsoon. Otherwise, a-chlorophyll concentration was highest in East monsoon and lowest was in first transitional monsoon. There was a correlation between temperature increasing and a-chlorophyll concentration decreasing. Sea surface temperature has also a negative correlation to CPUE and influenced fishing ground forming. Fishing ground in Banda Sea with highest CPUE during all monsoon was located on Western part of Seram Island: Buano, Kelang and Manipa Islands or situated on 126.70-1280 E and 2.60-3.40 S. The position surrounding Banda Sea lied on 127º-130.3º E and 3.2º-4º S