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Contact Name
Robet Perangin-angin
Contact Email
robert.peranginangin@gmail.com
Phone
+6285280618599
Journal Mail Official
cmj.journal2023@gmail.com
Editorial Address
Komp. Timah Bukit Baru RT/RW 003/001 Taman Bunga Gerunggang Kota Pangkalpinang, Indonesia
Location
Kota pangkal pinang,
Kepulauan bangka belitung
INDONESIA
Coastal and Marine Journal
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ISSN : -     EISSN : 30251613     DOI : https://doi.org/10.61548/cmj
Core Subject : Agriculture, Social,
Coastal and Marine Journal provides an international forum for publishing papers in fisheries science, fishing technology, fisheries management, sustainability of fisheries, coastal and ocean management, relevant socio-economics, the conservation of exploitable living resources, marine spatial planning, and ethno-oceanography. The scope covers marine fisheries, brackish systems, all aspects of associated ecology, environmental aspects of fisheries, and socio-economics. Both theoretical and practical papers are acceptable, including laboratory and field experimental studies. The journal is intended for fisheries scientists, biological oceanographers, fishing gear technologists, economists, managers, administrators, policymakers, and legislators.
Articles 24 Documents
The Changes in The Area and Condition of Seague on Lepar Island, South Bangka using Sentinel 2A Image Angelia, Fera; Supratman, Okto; Muftiadi, M. Rizza; Adi, Wahyu
Coastal and Marine Journal Vol. 2 No. 2 (2024)
Publisher : Yayasan Serumpun Karang Konservasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61548/cmj.v2i2.20

Abstract

Seagrass is a higher-level plant that has symbiosis, vessels and reproduces generatively and lives submerged in water. Seagrass has many functions in waters, namely as a breeding ground, primary producer, water stabilizer, and as a sediment trap. The large number of mining activities in the Bangka Belitung Islands Province, especially in South Bangka district, can cause sediment to enter the seagrass ecosystem which will indirectly damage the seagrass ecosystem. Not only mining, many other human activities around the seagrass ecosystem also pose a threat to this ecosystem, such as ship propellers, reclamation activities and dock construction. The method used to determine station points ispurposive sampling, to assess the condition of seagrass using the quadratic transect method at 3 stations, namely Penutuk, Tanjung Sangkar and Tanjung Labu. The research results of the seagrass area on Lepar Island in 2020 was 1437.53 Ha, in 2021 it was 1428.14 Ha, in 2022 it was 1339.54, and in 2023 it was 1258.22. The changes in seagrass area that occurred were a reduction in area of 9.39 Ha from 2020-2021, in 2021-2022 it decreased by 88.6, in 2022-2023 it decreased by 81.22 Ha and the total change in seagrass area from 2020-2023 was reduced by 179.31 Ha. The condition of seagrass cover on Lepar Island is categorized as poor with a percentage of station 1 (Penutuk) 22.042%, station 2 (Tanjung Sangkar) 14.071%, and Station 3 (Tanjung Labu) 0.0868%.
The Changes in Coral Reef Area on Semujur Island, Central Bangka Sandri; Okto Supratman; M. Rizza Muftiadi
Coastal and Marine Journal Vol. 2 No. 2 (2024)
Publisher : Yayasan Serumpun Karang Konservasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61548/cmj.v2i2.23

Abstract

Semujur Island, located in Kebintik Village, Pangkalan Baru Subdistrict, Central Bangka Regency, covers an area of approximately 40 hectares and is home to 47 households, the majority of whom are fishermen. The island is known as a center for fishing activities and grouper cultivation and has potential for marine tourism through its diverse coral reefs and reef fish. This study aimed to analyze changes in coral reef area using Sentinel-2A satellite imagery and to assess the influence of sea surface temperature on these changes. Ground truth data were collected in March 2023, consisting of 60 samples classified into four categories: coral reef, dead coral, seagrass, and sand. Image analysis included sunglint correction, water column correction, and supervised classification using the Maximum Likelihood Classifier method. The results indicated a decrease in coral reef area from 104.61 hectares in 2016 to 99.91 hectares in 2023, representing a reduction of approximately 4.5%. Analysis of sea surface temperature data showed an increasing trend, contributing to coral reef degradation. These findings highlight the urgent need for sustainable management efforts to protect the coral reef ecosystem of Semujur Island.
Analysis of Fish Catch Diversity Index on Purse Seine Vessels in Indonesia Fisheries Management Area 718 (IFMA-718) Fadli Alfarisi R; Perangin-angin, Robet; Sari, Ratih Purnama; Sugiono; Nurlaela, Eli
Coastal and Marine Journal Vol. 2 No. 1 (2024)
Publisher : Yayasan Serumpun Karang Konservasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61548/cmj.v2i1.47

Abstract

Indonesia Fisheries Management Area 718 (IFMA-718), located in the Arafura Sea, is known for its high marine biodiversity and serves as a strategic fishing ground. However, the lack of fishing gear selectivity in this area poses a significant threat to the sustainability of marine resources. This study aims to evaluate the selectivity of purse seine fishing gear through biodiversity analysis using the Shannon-Wiener diversity index (H’), evenness index (E), and dominance index (C). Data collection was conducted from September 2023 to March 2024 in the Arafura Sea using a 149 GT purse seiner. Catch data were categorized into target species, bycatch, and discards. The results showed that the values of H’ ranged from 0.77 to 1.40, E values were mostly greater than 1, and C values were below 0.5. These findings indicate a high species diversity and evenness, alongside low dominance, suggesting a relatively balanced community structure. However, such diversity also reflects the low selectivity of the fishing gear, which captures both target and non-target species, including demersal and benthic organisms. In conclusion, the purse seine gear used in IFMA-718 is considered to have low selectivity and is potentially harmful to non-target marine ecosystems. This study provides essential insights for improving selective fishing practices and implementing sustainable fisheries management in the region.
The Composition of Fish Catches in Purse Seiner Operating in the Indonesian Fisheries Management Area (WPP 713) Sulawesi Sea Ritonga, Sarlandi; Perangin-angin, Robet; Prasetyono, Untung; Sugiono
Coastal and Marine Journal Vol. 2 No. 2 (2024)
Publisher : Yayasan Serumpun Karang Konservasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61548/cmj.v2i2.49

Abstract

Purse seine is a widely used fishing gear in Indonesia for capturing small schooling pelagic species. The study aimed to analyze the catch composition of purse seine fishing performed using the KM Bintang Mas Maritime based at Nusantara Fisheries Port (NFP) Pekalongan and fishing in Indonesia Fisheries Management Area (IFMA 713) Sulawesi Sea. Data was collected through fishing trips observations and catch documentation from September 12, 2023 to February 16, 2024. The total catch was 155,000 kg which was composed of three dominant target species: Decapterus macarellus (32.25%), D. punctatus (29.03%), and Sardinella lemuru (22.59%) which make up 83.87% of the total catch. Bycatch made up 16.13% and included Euthynnus affinis, Rastrelliger kanagurta, Selar crumenophthalmus, and Priacanthus macracanthus. The high proportions of small pelagic fish in the catch is indicative of purse seine selectivity and show the target stocks in IFMA 713 are available. This data highlights the significance of regular evaluation and dynamic management strategies that can adapt to evolving conditions to maintain ecological balance and enduring resources.

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