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All Journal Jurnal Teknologi Perikanan dan Kelautan Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut Jurnal Ilmu dan Teknologi Kelautan Tropis Maspari Journal BULETIN OSEANOGRAFI MARINA Waste Technology Maspari Journal Jurnal Kelautan : Indonesian Journal of Marine Science and Technology Jurnal Penelitian dan Evaluasi pendidikan Jurnal Ilmu Kelautan Spermonde Jurnal Kelautan Tropis Aceh Journal of Animal Science Panrita Abdi - Jurnal Pengabdian pada Masyarakat Journal of Geoscience, Engineering, Environment, and Technology Journal of Applied Geospatial Information Jurnal Sumberdaya Akuatik Indopasifik JURNAL INTEGRASI Jurnal Penelitian Perikanan Indonesia Jurnal Kelautan Nasional Jurnal Segara PELAGICUS: Jurnal IPTEK Terapan Perikanan dan Kelautan ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua Jurnal Rekayasa elektrika Jurnal Perikanan SNTE Biodiversitas Journal of Biological Diversity
Sri Pujiyati
Departemen Ilmu Dan Teknologi Kelautan, Fakultas Perikanan Dan Ilmu Kelautan, Institut Pertanian Bogor, Jalan Agatis, Kampus IPB Dramaga, Bogor 16680, Indonesia
Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Physics Other

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Hydroacoustic Analysis of Pelagic Fish Aggregation Around Fish Aggregating Devices (FADs) in Maluku Sea Ramadhini Zulfa Alwafia; Sri Pujiyati; Angga Dwinovantyo; Steven Solikin; Widhya Nugroho Satrioajie
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol 18 No 2 (2026): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitkt.18.2.71642

Abstract

The Maluku Sea is a body of water with considerable potential in terms of the fisheries sector. Several fish aggregations are located in the Maluku Sea that are being checked using a Simrad EK-15 single beam echosounder with a frequency of 200 kHz kHz using the hydroacoustic method to record fish echoes. The hydroacoustic method provides information in the form of echoes from fish groups or fish volume. The backscattering strength (SV) is distributed around the fish aggregating device. This study aims to detect the presence of pelagic fish using hydroacoustic technology in the form of backscatter values and to analyze the relationship between pelagic fish SV and temperature, salinity, and currents around fish aggregating devices in the Maluku Sea. Fish aggregating devices in the Maluku Sea are dominated by small pelagic fish with fish aggregating device constructions reaching 70 meters below the water surface, there are buoys tied with floating ropes and artificial attractors such as palm fronds and weights. The temperature profile is around 29.73 – 26.85 °C, salinity ranges from 34.4 to 34.9 PSU, and the current speed is 0.2 meters per second. The distribution of fish SV values in the three fish aggregating devices was at a depth of 5 to 20 meters with SV values ranging from -46.53 to -52.91 dB, indicating that the fish aggregating devices greatly influenced the distribution of pelagic fish that tend to gather and follow the presence of attractors in the fish aggregating devices. 
Pengukuran Nilai Target Strength Ikan Lele (Clarias batrachus) Menggunakan Metode Hidroakustik SIMRAD EK15 Kondisi Terkontrol Hendi Santoso; Sri Pujiyati; Totok Hestirianoto; Indra Jaya; Asep Priatna
Vol 15 No 4 (2025): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v15i4.1646

Abstract

Catfish (Clarias batrachus) is one of the main commodities in Indonesia's freshwater aquaculture industry. Accurate monitoring of fish growth and population is crucial to improving production efficiency and sustainability. Conventional methods such as physical weighing are often inefficient and may cause stress to the fish. Therefore, hydroacoustic technology offers a promising alternative due to its non-invasive nature and ability to provide real-time data. This study aims to estimate the Target Strength (TS) of catfish using hydroacoustic methods with a SIMRAD EK15 instrument under controlled environmental conditions. The measurements were conducted in a test tank where physical parameters such as temperature, salinity, and water clarity were maintained consistently to ensure reliable results. The experiment involved 13 catfish of various sizes, with body lengths ranging from 8.1 cm to 19.3 cm and weights from 4 to 37 grams. The measured TS values ranged from -64.81 dB to -59.89 dB. The results indicated a positive correlation between TS and both fish length and weight, suggesting that larger fish produced stronger acoustic backscatter signals. This study provides a valuable foundation for the application of hydroacoustic methods in catfish population surveys, both in controlled environments and natural waters. The findings can be adapted to support more efficient and sustainable fish farming practices through real-time, technology-based monitoring systems.
Characteristics of Sediment Grain Size in Shallow Waters of Kapota Island and Atoll, Wakatobi Baigo Hamuna; Sri Pujiyati; Jonson Lumban Gaol; Totok Hestirianoto; Alianto Alianto
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol 18 No 2 (2026): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitkt.18.2.72360

Abstract

Shallow waters in tropical island and atoll regions are highly dynamic environments where sediment grain size characteristics and distribution are influenced by complex interactions. This research aims to obtain a description of the grain size characteristics of shallow water sediments on Kapota Island and Kapota Atoll, Wakatobi. Shallow water sediment samples were collected using a core pipe at 14 observation stations representing both study locations. Sediment grain size analysis was performed using the dry sieving method, while the fraction composition, sediment texture, and statistical parameters were determined with the aid of Gradistat software. The analysis results show that the shallow water sediments at both locations are composed of three main fractions: gravel (1.20–44.55%), sand (54.91–98.21%), and silt (0.01–10.50%). Texturally, sediments are classified into four types: sandy gravel, gravelly sand, slightly gravelly sand, and slightly gravelly muddy sand. The statistical parameter values indicate a mean grain size range from very coarse to very fine sand, a sorting level from moderately sorted to very poorly sorted, a skewness value from symmetrical to strongly skewed toward the coarse fraction, and a kurtosis from very flat to very peaked. Generally, there are no significant differences in the grain size characteristics of sediments between Kapota Island and Kapota Atoll, except for the sediment texture distribution pattern and the shape of the kurtosis curve. These results confirm that the sedimentation dynamics at both locations are relatively similar and provide an important basis for understanding deposition processes and managing the shallow water environment in Wakatobi.
Co-Authors A-Liem Aisyah Aisyah Ali Suman Alianto , Anang Prasetia Adi Andi Yaodi Nurani Yamin Angga Dwinovantyo Angga Dwinovantyo Ardella Insya Firmanti Ariel Hananya Asep Ma'mun Asep Priatna Augy Syahailatua Ayi Rahmat BAIGO HAMUNA Baigo Hamuna Baigo Hamuna Baigo Hamuna Baigo Hamuna Baigo Hamuna Baigo Hamuna Baigo Hamuna Bambang Retnoaji Bonar P. Pasaribu Bryan Felix Simanjuntak Budhi Agung Prasetyo DANIEL S PAMUNGKAS Dea Fauzia Lestari, Dea Fauzia Djisman Manurung Domey Moniharapon Dwi P. I. Mahdi Dwi Yuni Wulandari Efi Noferya Manafi Elson, La Endang Sunarwati Srimariana Erfind Nurdin Erwin Maulana Fachri Ali Badihi Firman Rusdin Freddy Supriyadi Freddy Supriyadi Hendi Santoso Hendi Santoso Henry Munandar Manik Hestirianoto, Totok Hidayanto Akbar Hidayat, Esa Fajar Husnul Kausarian HUSNUL KAUSARIAN I Made Candiasa Indra Jaya Indra Jaya Indra Jaya Indra Jaya Indra Jaya Jonson Lumban Gaol Julia Eka Astarini Kasih Anggraini Kasih Anggraini, Kasih Keni Sultan Lansky, Jovian Lisiard Dimara M. Hasbi Sidqi Alajuri M. Natsir M. Zainuddin Lubis Mahfud Palo Mahiswara Nahiswara Mochamad Adam Maulana Mochamad Tri Hartanto Muhamad Zainuddin Lubis Muhammad Fadhil Ilham Muhammad Hisyam Muhammad Hisyam Muhammad Hisyam Muhammad Mujahid Muhammad Mujahid Muhammad Musrianton MUHAMMAD TAUHID Muhammad Z. Lubis Muhammad Zainuddin Lubis MUHAMMAD ZAINUDDIN LUBIS Nazzla, Rauzatul Nyoman M N Natih Pratiwi Dwi Wulandari Pratiwi Dwi Wulandari PROF. DR. A.A.ISTRI NGR.MARHAENI,M.A. . Putri, Rini Sahni Ramadhini Zulfa Alwafia Rastina Rastina Rini Sahni Putri Riza Aitiando Pasaribu RR. Ella Evrita Hestiandari Safirudin Safirudin Siahaan, Gracia Tiffany Sri Hartati Steven Solikin Susilohadi Susilohadi Susilohadi Susilohadi Syamsul Bahri Agus, Syamsul Bahri Tiggi Choanji Totok Hestirianoto Tri Ariyah Hari Saputra Umar Darlan WENANG ANUROGO Widhya Nugroho Satrioajie Wijo Priyono Wijopriono Wijopriono Wijopriono Wijopriono Zulfathri Randhi