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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis
Steven Solikin
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University, Dramaga Campus, Bogor 16680, Indonesia
Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Library & Information Science

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Habitat-Driven Differences in Fish Assemblages Caught by Traditional Bubu Traps in Kapota Atoll, Wakatobi National Park, Indonesia Sri Pujiyati; Julia Eka Astarini; Steven Solikin; Baigo Hamuna; Efi Noferya Manafi; Muhammad Musrianton; Firman Rusdin; Safirudin Safirudin
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol 18 No 1 (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.18.1.71307

Abstract

Bubu are traditional passive fishing traps made from natural materials such as bamboo and are widely used in coral reef fisheries due to their low impact on benthic habitats. This study examines the diversity and community structure of fish associated with different benthic habitats in Kapota Atoll, Wakatobi National Park, Indonesia. Five bamboo traps (88 × 78 × 32 cm) were deployed at five stations representing four habitat types: coral, sand, coral rubble, and seagrass. To minimize fish avoidance, traps were initially left in place for 48 hours to allow odors from new bamboo to dissipate. After this period, traps were retrieved to collect the catch and then redeployed. Sampling was conducted twice. A total of 92 individuals representing 25 species from 14 families were recorded. Ecological indices indicated moderate diversity (H' = 1.277-2.094), high evenness (E = 0.778-0.921), and low dominance (D = 0.141-0.306). Correspondence analysis explained 64.6% of the species–habitat relationship (Axis 1: 36.02%; Axis 2: 28.58%) and identified three assemblages associated with sand/coral/rubble habitats, shallow seagrass (3 m), and deeper seagrass (8 m). Overall, the results indicate that bubu traps are effective for capturing fish diversity across different benthic habitats and can provide useful ecological information for fisheries management, despite their relatively limited sampling area.
Seafloor Morphology and Bathymetric Data Quality Evaluation Around Panjang Island, Banten Bay Steven Solikin; Sri Pujiyati; Dwi Yuni Wulandari; Tri Ariyah Hari Saputra; Umar Darlan; A-Liem; Ardella Insya Firmanti
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol 18 No 1 (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.18.1.71510

Abstract

Gathering accurate bathymetric data in shallow coastal waters proves to be difficult due to the environmental issues and operational constraints, especially in a semi-enclosed water like Banten Bay. This research intends to examine the seafloor morphology, in addition to assessing the quality of hydrographic data acquired through the use of single-beam echosounder (Odom Echotrac CV100) around Panjang Island Waters. The main line and cross line surveys of the survey were carried out using RTK-GNSS positioning and tidal corrections using 30 day observations relative to mean sea level. The bathymetric data show a gradual depth transition from 8 m nearshore to more than 20 m offshore. Ridges and basins are evident in the data indicating spatial variability. According to the results of a data quality assessment based on the IHO S-44 standard, 94.07% of data belonged to Order 2, 76.67% to Order 1a/1b, 56.30% to Special Order and 38.52% to Exclusive Order with data errors below 7%. As the above results suggest, the general hydrographic mapping by the dataset is of reliable accuracy, which does not achieve highest accuracy consistently. The study’s main contribution is the demonstration of performance and practical limitations of single beam echosounder surveys in shallow water environment with a quantification of data quality compared to IHO standard. This study provides a validated methodology for low-cost bathymetric mapping of other similar semi-enclosed coastal water.
Co-Authors A-Liem Ardella Insya Firmanti Baigo Hamuna Dwi Yuni Wulandari Efi Noferya Manafi Firman Rusdin Julia Eka Astarini Muhammad Musrianton Safirudin Safirudin Sri Pujiyati Tri Ariyah Hari Saputra Umar Darlan