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All Journal Jurnal Perikanan dan Kelautan Journal of Community Development and Disaster Management International Journal of Science and Environment Jurnal Masyarakat Madani Indonesia Prosiding Seminar Nasional Inovasi Teknologi Terapan Jurnal Inovasi Teknologi Terapan Biodiversitas Journal of Biological Diversity
Valentin Vina Ratnapuri
Politeknik Manufaktur Negeri Bangka Belitung
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Environmental Science Mathematics Mechanical Engineering Physics Public Health 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.
Bioeconomic Analysis of Pelagic Fish Resources in Bangka Waters Landed at PPN Sungailiat Monischa Br Sebayang; Ni luh Eta Yuspita; Valentin Vina Ratnapuri; Misri Yandi; Wika Noventa
Jurnal Perikanan dan Kelautan Vol 16, No 1 (2026)
Publisher : JURNAL PERIKANAN DAN KELAUTAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33512/jpk.v16i1.32960

Abstract

Bangka Belitung Islands are an archipelago with a water area (65,301 km²) four times larger than its land area. This area has fishery resources that have great potential to support the economy, This study aims to analyze the bioeconomics of pelagic fish resources in Bangka waters landed at Sungailiat Nusantara Fishing Port using a surplus production approach. The research was conducted in January 2025 at PPN Sungailiat, Bangka Regency, Bangka Belitung Islands. Data were collected using descriptive methods and analyzed using the Schaefer surplus production model from January to March 2025. The results showed that the Maximum Sustainable Yield (MSY) was 6005.948 tons/year. From 2019 to 2024, catch production remained below the MSY, indicating potential for optimization. The optimum fishing effort was 5914 trips/year, with 2019–2021 exceeding this level, while 2022–2024 remained below it. These findings suggest that pelagic fisheries management can still be improved by emphasizing sustainability and economic efficiency. It is recommended that resource management policies target fishing efforts approaching the Maximum Economic Yield (MEY) to achieve a balance between catch quantity and economic profit. 
Pelatihan Pemeliharaan Mesin Kapal dan Teknologi Penangkapan untuk Meningkatkan Kemandirian Nelayan di Sungailiat Valentin Vina Ratnapuri; Misri Yandi; Monischa Br Sebayang; Ni Luh Eta Yuspita; Dewi Tumatul Ainin; Ali Rizki Maulana; Muhammad Fathur Rozaki; Nita Anggi Felisha; Heppy Clarisa Sinaga
Jurnal Masyarakat Madani Indonesia Vol. 5 No. 2 (2026): Mei
Publisher : Alesha Media Digital

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59025/bg46kw25

Abstract

Indonesia sebagai negara maritim memiliki potensi besar di sektor kelautan, dengan nelayan skala kecil sebagai aktor penting dalam ketahanan pangan dan ekonomi nasional. Namun, nelayan di pesisir Sungailiat, Bangka, masih menghadapi keterbatasan teknis, terutama dalam pemeliharaan mesin kapal dan penentuan lokasi penangkapan yang efisien. Kegiatan ini bertujuan meningkatkan kompetensi teknis nelayan melalui pelatihan pemeliharaan mesin kapal dan pemanfaatan teknologi navigasi. Metode yang digunakan adalah pendekatan partisipatif dengan melibatkan 51 nelayan, melalui praktik langsung, diskusi interaktif, dan demonstrasi teknis. Hasil menunjukkan adanya peningkatan signifikan, di mana nilai rata-rata pre-test sebesar 58.6 meningkat menjadi 88.4 pada post-test (kenaikan 29,8 poin; N-gain = 0,72 kategori tinggi). Sebanyak 84.31% peserta mengalami peningkatan skor ≥60%, serta 78% peserta mampu melakukan perawatan dasar mesin secara mandiri setelah pelatihan. Selain itu, pemahaman penggunaan GPS meningkat dari 21% menjadi 65%. Temuan ini menunjukkan bahwa pelatihan berbasis praktik efektif dalam meningkatkan kompetensi teknis nelayan dan berimplikasi pada efisiensi operasional serta penguatan kemandirian. Program ini berpotensi direplikasi dengan dukungan pendampingan berkelanjutan dan akses teknologi yang lebih terjangkau.
Water Fertility Based on Chlorophyll a in Aqua-MODIS Satellite Imagery in the Waters of Belitung Island Valentin Vina Ratnapuri; Monischa Br Sebayang; Misri Yandi; Ali Rizki Maulana; Ni Luh Eta Yuspita
International Journal of Science and Environment (IJSE) Vol. 6 No. 1 (2026): February 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

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.
Environmental distribution patterns and sustainability assessment of mitre squid Uroteuthis chinensis in the waters of Bangka, Indonesia VALENTIN VINA RATNAPURI; MONISCHA BR SEBAYANG; MUHAMAD FATHUR ROZAKI
Biodiversitas Journal of Biological Diversity Vol. 27 No. 5 (2026)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d270517

Abstract

Abstract. Ratnapuri VV, Sebayang MB, Rozaki MF. 2026. Environmental distribution patterns and sustainability assessment of mitre squid Uroteuthis chinensis in the waters of Bangka, Indonesia. Biodiversitas 27 (5): d270517. https://doi.org/10.13057/biodiv/d270517. The waters of Bangka were among the main mitre squid Uroteuthis chinensis production areas in Indonesia, but they showed signs of increased exploitation pressure that could affect stock sustainability. This study aimed to integrate the satellite-based Environmental Suitability Index and Maximum Sustainable Yield for mitre squid in Bangka, with a monthly distribution resolution that explicitly distinguished between productive and non-productive seasons. Satellite imagery data and catch landings were used for the period September 2024-August 2025, while the Maximum Sustainable Yield was estimated for the period 2020-2024. The weighting of environmental parameters in the Environmental Suitability Index (ESI) was conducted through Principal Component Analysis and Pearson Correlation. The results showed that the Environmental Suitability Index value had a strong and significant positive relationship with CPUE (r: 0.838; p: 0.001; R²: 0.6503), with periods of moderate to high ESI values (≥0.4) being associated with increased CPUE (0.539-0.755 ton/trip), while low ESI values (<0.4) were associated with low CPUE (0.017-0.552 ton/trip). On the other hand, sea surface temperature (29.558-30.848°C) and chlorophyll-a (0.279-0.375 mg m-³) did not show a significant linear relationship with CPUE, thus were interpreted as indicators of habitat conditions rather than direct drivers of productivity. The Maximum Sustainable Yield analysis showed that in 2023, production reached 9,157 tons, exceeding the Maximum Sustainable Yield estimate of 7,865 tons (16.43%), with an effort level of 65,513 trips, surpassing the Fopt of 35,800 trips (82.72%), thereby indicating potential fishing pressure. Overall, these findings affirmed that the multivariate approach based on the Environmental Suitability Index was more effective in representing habitat suitability and highlighted the importance of seasonally adaptive management. However, the interpretation of results and management recommendations in this study required further validation through long-term data and scenario-based implementation before operational application.
Monitoring Alat Ukur Kecepatan Arus Air Laut Berbasis Internet of Things (IoT) Muhammad Nur Wahid Barokah; Ageng Ibnu Sahrial; Yudhi Yudhi; Valentin Vina Ratnapuri
Jurnal Inovasi Teknologi Terapan Vol. 4 No. 2 (2026): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/jitt.v4i2.417

Abstract

Abstract This final study focuses on the development of a sea current speed measuring device designed using Internet of Things (IoT) technology, allowing it to be monitored in real-time via mobile devices. The system integrates several core components, including the ESP32 microcontroller, the LM393 infrared speed sensor, and a disk encoder. It utilizes MIT App Inventor as the interface between the device and the user. The sea current speed data is displayed in RPM and cm/s units, both on an LCD screen and within an Android application. Device testing was conducted over three consecutive days at three different locations to evaluate system performance under real-world environmental conditions. The results showed that the system was capable of delivering accurate data readings, with an average accuracy rate of 93,09%. With these capabilities, the system is expected to provide a practical, affordable, and efficient solution for monitoring sea current speeds, particularly for fishermen and other users who require direct and continuous oceanographic data
RANCANG BANGUN LOKER PENGAMAN PENITIPAN OTOMATIS MENGGUNAKAN SISTEM SPECIAL CODE Nafis Syaefullah; Shela Hermawan; Surojo Surojo; Valentin Vina Ratnapuri
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 6 No. 1 (2026): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Conventional storage lockers had security limitations because they relied on physical keys that could be lost, damaged, or misused. This study aimed to design and implement an automatic locker security system using a special code method for user authentication. The system was developed using an ESP32 integrated with a keypad, a 16×2 LCD, a magnetic reed switch, a relay, a solenoid door lock, a buzzer, LEDs, and the Blynk application for monitoring and access management. The research method consisted of system planning, hardware and software design, implementation, and functional testing of all system components. The testing results showed that the proposed system successfully performed access code verification, automatic locking and unlocking, password modification, forced-entry detection, and system recovery. Implementing the special code method improved locker security, simplified user operations, and enhanced the efficiency of storing and retrieving belongings compared with conventional locker systems.
Co-Authors ., Yudhi Ageng Ibnu Sahrial Ali Rizki Maulana Dewi Tumatul Ainin Hasyimi, Wahid Heppy Clarisa Sinaga Misri Yandi Monischa br Sebayang MUHAMAD FATHUR ROZAKI Muhammad Fathur Rozaki Muhammad Nur Wahid Barokah Nafis Syaefullah Ni luh Eta Yuspita Ni Luh Eta Yuspita Nita Anggi Felisha Shela Hermawan Surojo Wika Noventa Yuspita, Ni Luh Eta