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      • UT - Marine Science And Technology
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      Distibusi Nilai Target Strength Ikan Pelagis di Perairan Pancur, Kabupaten Lingga, Kepulauan Riau

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      Date
      2021-08
      Author
      Apriliani, Heti
      Hestirianoto, Totok
      Abdillah, Dony
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      Abstract
      Perairan pancur merupakan pusat pengumpulan ikan hasil tangkapan nelayan. Mata pencaharian masyarakat di Pancur yaitu nelayan. Informasi mengenai stok ikan di perairan sangat penting. Metode akustik dapat digunakan untuk menentukan pendugaan stok ikan di suatu perairan. Nilai target strength dapat digunakan sebagai scaling factor dalam pendugaan stok ikan. Penelitian ini bertujuan menganalisis distribusi target strength dan pendugaan stok ikan Pengambilan data pada penelitian menggunakan SIMRAD EK-15 frekuensi 200 kHz dan pengolahan data menggunakan software Sonar4. Distribusi nilai target strength di setiap jalur tracking ditemukan ikan dengan ukuran dan jumlah yang berbeda-beda. Jumlah keseluruhan target yang terdeteksi yaitu sebanyak 84276 ekor ikan. Jumlah ikan yang paling banyak terdeteksi yaitu dengan nilai TS -68 dB sampai -65 dB sebanyak 39577 ekor sedangkan jumlah yang paling sedikit yaitu - 41 dB sampai -38 dB dengan jumlah sebanyak 141 ekor. Diduga nilai TS -68 dB sampai -59 dB merupakan ikan bilis (Stolephorus spp). Ikan dengan ukuran 12.32 cm sampai 49.54 diduga merupakan ikan selain ikan bilis, seperti ikan duri dan ikan lebam.
       
      The fountain is a center for collecting fish caught by fishermen. The livelihoods of the people in Pancur are fishermen. Information about fish stocks in the waters is very important. Acoustic methods can be used to determine the estimation of fish stocks in a waters. The target strength value can be used a scaling factor in estimatin fish stocks. This study aims to analyze the distribution of target strength and fish stock estimation. Data collection in this study used SIMRAD EK15 with a frequency of 200 kHz and data processing using Sonar4 software. The distribution of target strength values in each tracking path was found to be fish with different sizes and numbers. The total number of detected targets was 84276 fish. The highest number of fish detected was with a TS value of -68 dB to -65 dB as many as 39577 fish while the smallest number was -41 dB to -38 dB with a total of 141 fish. It is suspected that the target strength value -68 dB to -59 dB is an anchovy fish (Stolephorus spp). Fish with a size of 12.32 cm to 49.54 are suspected to be fish other than anchovies, such as thorn fish and bruising fish.
       
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      http://repository.ipb.ac.id/handle/123456789/108464
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      • UT - Marine Science And Technology [2093]

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      Copyright © 2020 Library of IPB University
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      Indonesia DSpace Group 
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