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All Journal Journal of Community Development and Disaster Management International Journal of Science and Environment
Ratnapuri, Valentin Vina
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Environmental Science Mathematics Physics Social Sciences

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Studi Morfometrik dan Meristik Ikan Jebung (Abalistes stellaris) di PPN Sungailiat Kabupaten Bangka Sebayang, Monischa Br; Yuspita, Ni Luh Eta; Ratnapuri, Valentin Vina; Yandi, Misri; Maulana, Ali Rizki; Hasyimi, Wahid; Ainin, Dewi Tumatul
Journal of Community Development and Disaster Management Vol 7 No 1 (2025): Journal of Community Development and Disaster Management
Publisher : Institut Agama Islam Sunan Giri Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37680/jcd.v7i1.6968

Abstract

This study was conducted at PPN Sungailiat, Bangka Regency, to identify morphometric and meristic characteristics of Jebung fish (Abalistes stellaris), as well as environmentally friendly fishing gear. The research method used was descriptive with a simple random sampling technique to collect fish samples. Data were collected through observation and interviews, then analyzed using morphometric and meristic identification. The results showed that Jebung fish had 23 morphometric characters and 9 meristic characters, with an average total length of 30.5 cm and a standard length of 27 cm. Fin characteristics showed significant differences compared to other fish in the same family. In addition, the recommended fishing methods are bubu and bottom fishing to maintain the sustainability of the fish population. The conclusion of this study is that Jebung fish has distinctive morphometric and meristic characteristics, and requires an ecosystem-based management strategy to maintain its sustainability. The results of this study can serve as a basis for better fisheries resource management policies in the Bangka region.
Water Fertility Based on Chlorophyll a in Aqua-MODIS Satellite Imagery in the Waters of Belitung Island Vina Ratnapuri, Valentin; Sebayang, Monischa Br; Yandi, Misri; Maulana, Ali Rizki; Yuspita, Ni Luh Eta
International Journal of Science and Environment (IJSE) Vol. 6 No. 1 (2026): February 2026
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i1.337

Abstract

The waters of Belitung Island are tropical waters that play a crucial role in supporting the global ecosystem balance through primary productivity, which can be measured using chlorophyll a concentration as an indicator of water fertility. The strategic geographical location of Belitung Island, situated on the border of the Karimata Strait, the Java Sea, and the South China Sea, makes it vulnerable to the constantly changing oceanographic dynamics. This study aims to analyze the spatial-temporal distribution and fluctuations of chlorophyll a in the waters of Belitung Island based on Aqua-MODIS satellite imagery from January to December 2024. Chlorophyll-a data were extracted from Aqua-MODIS satellite imagery using the OCx and CI algorithms, then analyzed using the Inverse Distance Weighting (IDW) interpolation method through ArcGIS and SeaDAS software. The research results show that the waters of Belitung Island are generally classified as oligotrophic, with an average chlorophyll a concentration ranging from 0.39 to 0.81 mg/m³. The lowest concentration at the April location point was 0.08 mg/m³, and the lowest average was in May (0.39 mg/m³), coinciding with the first transition season due to reduced upwelling and water stratification. Conversely, the highest concentration was detected at the May location point (5.14 mg/m³), and the highest average was observed in June (0.81 mg/m³), when the southeast monsoon triggered increased winds and upwelling, bringing nutrients from the lower layers to the surface. This research demonstrates that monsoon variability and local oceanographic processes have a significant influence on water fertility in Belitung Island and can be utilized in predicting potential fishing areas.
Co-Authors Ali Rizki Maulana Dewi Tumatul Ainin Hasyimi, Wahid Monischa br Sebayang Yandi, Misri Yuspita, Ni Luh Eta