Electronic Theses and Dissertation

Suhu permukaan laut dan klorofil-a merupakan parameter oseanografi penting untuk menilai tingkat produktivitas dari suatu perairan. Penelitian ini mengkaji hubungan suhu permukaan laut dan klorofil-a terhadap hasil tangkapan ikan di perairan utara Aceh. Data suhu permukaan laut dan klorofil-a diperoleh dari citra satelit Aqua Modis dalam periode bulanan dalam kurun waktu 2007 – 2020 yang di ekstrak secara temporal diwilayah studi dengan menggunakan software Generic Mapping Tools (GMT) dan Visual Studio Code (VSC). Pengumpulan data validasi dilakukan dengan mengikuti prosedur Rapid Apprisial Fisheries Management System (RAFMS) dengan mengumpulkan informasi berupa kuesioner, pada bulan Juni - Juli 2021, dilima desa sentra perikanan di perairan utara Aceh. Sebanyak 50 responden yang mencakup armada tangkap one-day dan non one-day fishing memvalidasi daerah fishing ground dan jumlah hasil tangkapan. Analisis data yang dilakukan dalam penelitian ini menggunakan analisa regresi linier berganda untuk mengetahui pengaruh suhu permukaan laut dan klorofil-a terhadap hasil tangkapan ikan. Hasil penelitian ini menunjukan hasil tangkapan nelayan secara keseluruhan sebesar 564.260 kg/bulan. Sedangkan hasil uji statistik menunjukkan secara simultan bahwa nilai koefisien determinasi (R2) nelayan non one-day fishing sebesar 0.053, artinya terdapat 5.3% hasil tangkapan dipengaruhi oleh suhu permukaan laut dan klorofil-a, serta ada 94.7% diduga dipengaruhi oleh faktor lain. Sedangkan nilai koefisien determinasi (R2) nelayan one-day fishing sebesar 0.320, artinya terdapat 32% hasil tangkapan dipengaruhi oleh suhu permukaan laut dan klorofil-a terhadap hasil tangkapan nelayan, serta ada 68% dapat diduga dipengaruhi oleh faktor lain.
Kata Kunci : hasil tangkapan, suhu permukaaan laut, klorofil-a, perairan utara Aceh

Sea surface temperature and chlorophyll-a are important oceanographic parameters to assess the productivity level of waters. This study examines the relationship between sea surface temperature and chlorophyll-a used on fish catches at the northern waters of Aceh. Data on sea surface temperature and chlorophyll-a were obtained from Aqua Modis satellite imagery for a monthly period in the since 2007 – 2020 which was extracted monthly in the study area using Generic Mapping Tools (GMT) and Visual Studio Code (VSC) softwares. The validation step was carried out by through the Rapid Appricial Fisheries Management System (RAFMS) procedure by collecting information in the form of a questionnaire, at June - July 2021, in five fishing villages cover the northern waters of Aceh. A total of 50 respondents covering one-day and non-one-day fishing fleets validated its fishing ground area and the total catches. The statistical multiple linear regression analysis was used to determine the effect of sea surface temperature and chlorophyll-a on fish catches. The results indicate that the overall catch of fishermen is 564,260 kg/month. Meanwhile, the results of statistical tests simultaneously shown that the coefficient of determination (R2) for non one-day fishing fleet is 0.053, meaning that 5.3% of the catch is influenced by sea surface temperature and chlorophyll-a, and 94.7% is thought to be influenced by other factors. While the coefficient of determination (R2) for one-day fishing fleet is 0.320, meaning that 32% of the catch is influenced by sea surface temperature and chlorophyll-a, and 68% can be thought to be influenced by other factors. Keywords: catch, sea surface temperature, chlorophyll-a, northern waters of Aceh