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COJ (Coastal and Ocean Journal)
Published by Institut Pertanian Bogor
ISSN : -     EISSN : 25498223     DOI : https://doi.org/10.29244/COJ.5.1
Core Subject : Agriculture, Social,
Agriculture, Biological Sciences & Forestry Environmental Science Social Sciences
COJ (Coastal and Ocean Journal) memiliki ISSN Online: 2549-8223 adalah Jurnal yang dikelola oleh Pusat Kajian Sumberdaya Pesisir dan Lautan, Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM), IPB University, dengan tujuan menyebarluaskan informasi tentang perkembangan ilmiah bidang pengelolaan wilayah pesisir dan lautan di Indonesia. Yang dimaksud dengan perkembangan ilmiah, pengelolaan, inovasi dan teknologi bidang pesisir dan lautan di Indonesia antara lain: Pengelolaan Perikanan, Pengolahan Hasil Laut, Bioteknologi Kelautan, Pengelolaan Sumberdaya Perairan, Pengelolaan Sumberdaya Pesisir dan Lautan, Pemetaan Wilayah Pesisir dan Laut, Hukum dan Sosial Ekonomi Wilayah Pesisir dan Laut, Sistem Sosial dan Ekologi Pesisir dan Lautan, Jasa Ekosistem Pesisir dan Lautan, Konservasi Sumberdaya Pesisir dan Laut serta Pengendalian Pencemaran Lingkungan Pesisir dan Lautan. Berdasarkan Surat Keputusan ISSN LIPI bahwa Coastal and Ocean Journal telah terdaftar dalam ISSN online dengan Nomor SK no. 0005.25498223/JI.3.1/SK.ISSN/2017.03 - 8 Maret 2017. Naskah yang masuk ke COJ akan dicek mengenai pedoman penulisannya oleh Administrasi, apabila sudah sesuai akan direview oleh 1 (satu) orang Dewan Penyunting dan 1 (satu) orang Mitra Bestari (Peer-Reviewer) berdasarkan penunjukan dari Ketua Dewan Penyunting. Keputusan diterima atau tidaknya suatu naskah menjadi hak dari Ketua Dewan Penyunting berdasarkan atas rekomendasi dari Dewan Penyunting dan Mitra Bestari. Jurnal COJ terbit 2 kali dalam 1 tahun (Juni dan Desember) Focus and Scope Pengelolaan Perikanan Pengolahan Hasil Laut Bioteknologi Kelautan Pengelolaan Sumberdaya Perairan Pengelolaan Sumberdaya Pesisir dan Lautan Pemetaan Wilayah Pesisir dan Lautan Kebijakan dan Ekonomi Wilayah Pesisir dan Lautan Sistem Sosial dan Ekologi Pesisir dan Lautan Jasa Ekosistem Pesisir dan Lautan Konservasi Sumberdaya Pesisir dan Lautan Pengendalian Pencemaran Lingkungan Pesisir dan Lautan
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Ilmu Lingkungan (Lain-Lain)
Articles 80 Documents
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Economic Policy of Renewable Energy: Development of Marine Current Energy in Madura Straits, Indonesia Firdaus, Adil M.; Kusumastanto, Tridoyo; Nurjaya, I Wayan
Coastal and Ocean Journal (COJ) Vol 8 No 2 (2024): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v8i2.61444

Abstract

The depletion of fossil resources and environmental degradation caused by conventional oil and gas exploitation highlight the urgency for renewable energy adoption to achieve sustainable development. Marine current energy offers a promising alternative, yet its economic feasibility remains insufficiently studied. The study aims to analyze the economic potential of marine currents energy and policy development as a source of renewable energy by developing of power plant in Madura Strait, East Java Province, Indonesia. The analysis methods used in this study were technical feasibility, econometric analysis, cost-benefit analysis, input-output model and policy analysis. Results showed that Madura Strait has sufficient resource potential to produce marine current energy, consumers’ income and KWh used are significant parameters in using marine current energy, the marine currents energy power plant development is financially feasible to be developed for at least 3 units (30 kW) or more with NPV of USD 57,010; Net B/C 1.57 and IRR 8% for 10 years investment period. Development of the power plant 3MW marine current energy will increase 0,02% of gross regional domestic product. Policy analysis using the Analytic Hierarchy Process (AHP) identifies regional infrastructure development, including coastal spatial planning, as the top policy priority.
ESTIMASI STOK KARBON PADA BIOMASSA LAMUN DI PULAU KEDINDINGAN, KALIMANTAN TIMUR Ambomasse, Yusril M.; Irawan, Aditya; Paputungan, Mohammad Sumiran; Rahmawati, Susi
Coastal and Ocean Journal (COJ) Vol 8 No 1 (2024): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v8i1.51175

Abstract

Kedindingan Island is a part of marine conservation area in East Kalimantan. This island has a seagrass ecosystem, which could potentially provide ecosystem service in climate change mitigation as a carbon sink. However, there is limited information on the carbon content of the seagrass ecosystem there. This study aimed to estimate the carbon stock in the seagrass biomass on Kedindingan Island. Field sampling activities for collecting seagrass biomass were done in September 2021. A PVC core with a 20 cm diameter, 3 mm thick, and 80 cm length was used to collect seagrass biomass. The loss on ignition (LOI) method was applied to determine the concentration of organic carbon in the biomass. The results of this study found 7 species of seagrass in the study area, which were dominated by Thalassia hemprichii. The organic carbon concentration in above-ground biomass and below-ground biomass ranged from 30.8-31.7% and 29.4-31.4%, respectively. The average biomass was 4.99 Mg/ha and its average carbon stock was estimated at 1.53 MgC/ha. Based on the total carbon stock analysis, the above-ground biomass stored more carbon (79.28%) than the below-ground biomass.
PENGEMBANGAN KBP DAN KEBERLANJUTAN HUTAN MANGROVE DI PATIMBAN, SUBANG, JAWA BARAT Larasati, Sharfina Elda; Daulay, Rasoki Mintana Debara; Bashir, Imam Abdullah
Coastal and Ocean Journal (COJ) Vol 8 No 1 (2024): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v8i1.52311

Abstract

The focus of the development of the New City of Patimban(NCP) in Subang, West Java, lies in aligning with the city's aspirations and safeguarding the nearby mangrove forests. Guided by the West Java RTRW 2022-2042 and Subang Regent Regulation No. 38 of 2021, the development faces a challenge as allocating land for industrial purposes may adversely affect the mangrove ecosystems. Examining this situation through a Social-Ecological Systems (SES) lens reveals the need to comprehend the development's impact on mangrove forests.The research, titled "The Impact of the Development of the New City of Patimban on the Sustainability of Mangrove Forests," explores the interconnectedness of economic, social, and environmental factors. The New City of Patimban contend with environmental consequences, including habitat loss, mangrove ecosystem degradation, and greenhouse gas emissions. While infrastructure development holds economic promise, it concurrently poses risks to local livelihoods. To address these challenges, the study advocates for collaboration between the government, local communities, and stakeholders to restore and protect mangrove forests. It emphasizes the importance of ongoing assessment of regulations, such as the West Java RTRW 2022-2042 and Subang Regent Regulation No. 38 of 2021, to ensure the development aligns with desired principles without compromising the environment. The article underscores the historical significance of mangrove forests in supporting the socio-economic life of fishing communities for over 150 years. It suggests leveraging mangrove forests to sustain the social and economic well-being of these communities, emphasizing the need for responsible development that preserves both urban aspirations and ecological integrity.
EFFECTIVENESS OF CONSERVATION MANAGEMENT OF OLIVE RIDLEY SEA TURTLES (LEPIDOCHELYS OLIVACEA) AT ABADI TURTLE CONSERVATION, TRISIK BEACH, KULONPROGO, YOGYAKARTA Sri, Hidayat; Waluyo; Bidari, H. Buditami
Coastal and Ocean Journal (COJ) Vol 8 No 1 (2024): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v8i1.53434

Abstract

Turtles are an endangered biota around the world; one type is the Olive Ridley Turtle (Lepidochelys olivacea). Turtle extinction is caused by a decrease in the number of turtles laying eggs in their native habitat each year, hence turtle conservation is required in order to protect turtle populations. Turtle conservation in Indonesia is not yet deemed optimal; therefore, study on the effectiveness of turtle conservation, such as that of Olive Ridley Turtles at the Abadi Turtle Conservation, Trisik Beach, Kulonprogo, Yogyakarta, is required. This research was conducted in December 2022. This study uses observation, a survey, a questionnaire, and SPSS Multidimensional Scaling (MDS) to handle the data. This study has numerous components, including social, economic, ecological, environmental, legal, and institutional, as well as infrastructure dimensions. These parameters are analyzed to determine stress and sustainability values. After MDS processing, the findings showed that the ecological dimension had the minimum stress value, which is very good, at 0.42%, and the sustainability value was 99.9%. So, from an ecological standpoint, conservation is very beneficial and can be implemented to ensure the effectiveness of Olive Ridley Turtle conservation
DOMINANSI DAN POLA ZONASI MANGROVE DI DESA PENTADU BARAT TELUK TOMINI GORONTALO Rahim, Ditya Nanda; Kasim, Faizal; Nane, La
Coastal and Ocean Journal (COJ) Vol 8 No 1 (2024): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v8i1.54743

Abstract

The purpose of this study is to discover the composition, dominance index value, and zoning pattern of mangrove plant in Pentadu Barat Village, Tilamuta Subdistrict, Boalemo Regency. This study was conducted from January to March 2023. The sampling method is purposive sampling using 10 × 10 cm linear transect for tree, 5 × 5 cm linear transect for saplings, and 2.5 × 2.5 cm linear transect for seedlings. The mangrove sample is descriptively and quantitatively analysed by identifying the species to calculate the type compositions and dominance index using Microsoft Excel. The result of the study reveals 12 species of 4 families from 3 study location (Avicennia alba, Avicennia officinalis, Bruguiera cylindrical, Bruguiera gymnorrhiza, Bruguiera parviflora, Ceriops decandraCeriops tagal, Rhizophora apiculata, Rhizophora mucronata, Rhizophora stylosa, Sonneratia alba and Xylocarpus granatum). The type composition value was 35% from Rhizophora mucronata. The average dominance index value was 0.0174. The zoning pattern was mixedbecause it grows mixed with each other among several species.
Coastal Vulnerability – Maritime Security Nexus: Insights from the Coast of Java Island Kusumadewi, Hemalia
Coastal and Ocean Journal (COJ) Vol 9 No 1 (2025): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v9i1.59528

Abstract

Indonesia, as an archipelagic state with one of the world’s longest coastlines, faced significant coastal vulnerabilities, such as erosion, sea-level rise, and mangrove loss, which intersected with maritime security concerns and impacted livelihoods, communities, and sustainability. This study explored the linkage between coastal vulnerability and maritime security, focusing on Java Island. Using qualitative methods and a literature review, it examined Java’s critical coastal vulnerabilities and their influence on Indonesia’s maritime security. Key issues included environmental degradation, the well-being of coastal communities, marine ecosystem health, maritime crimes, and illegal, unreported, and unregulated (IUU) fishing, analyzed within national development and coastal policy contexts. Findings revealed common ecological threats along Java’s coasts, the interconnection between coastal vulnerability and Bueger’s Maritime Security dimensions, and the need for a maritime security perspective to address sidelined vulnerabilities during non-crisis periods. This research underscored the importance of integrating coastal vulnerability into maritime security discussions to enhance resilience, preparedness, and proactive policy-making at local and national levels.
Asesmen Temporal Degradasi Lamun di Pesisir Kepulauan Riau, Indonesia Nur, Syarif; Nurdjaman, Susanna
Coastal and Ocean Journal (COJ) Vol 9 No 1 (2025): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v9i1.61813

Abstract

Seagrass plays a crucial role in coastal ecosystems, necessitating its preservation to maintain ecosystem health. This study addresses the degradation of seagrass meadows in the coastal regions of the Riau Islands, Indonesia, utilizing remote sensing techniques and spatial data analysis. Satellite imagery offers a cost-effective means of monitoring seagrass health in shallow coastal waters. In October 2020, the research team conducted the study at six stations—four on Lingga Island and two on Singkep Island. Utilized Sentinel-2 satellite imagery from 2019 and applied the Depth Invariant Index (DII) along with Support Vector Machine (SVM) classification. In-situ observations, conducted simultaneously, validated the satellite data and facilitated seagrass accuracy assessment, including species identification using the Seagrass-Watch (Transect Quadrant) methodology. The results reveal significant seagrass degradation in the Riau Islands. The DII method detected extensive seagrass losses, covering approximately 175 km2 of seagrass meadows across Lingga and Singkep Islands. Species identification confirmed the presence of Halophila ovalis, Halophila minor, Thalassia hemprichii, and identified Enhalus acoroides as the dominant species. This research gives important insights into the temporal degradation of seagrass environments along the coastal regions of the Riau Islands, highlighting the importance of continued monitoring and preservation efforts.
The Impact of Mangrove on Water Quality and Milkfish Productivity in The Silvofishery Ponds in Sawojajar Village, Brebes Regency Novida, Rika; Setia, Tatang Mitra; Santoso, Nyoto; Widigdo, Bambang
Coastal and Ocean Journal (COJ) Vol 9 No 1 (2025): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v9i1.62550

Abstract

The mangrove ecosystem plays a crucial role in maintaining coastal ecological balance and providing economic benefits through aquaculture. However, the widespread conversion of mangroves into shrimp ponds has contributed to environmental degradation and increased coastal vulnerability. This study evaluates the effectiveness of the silvofishery system, which integrates mangrove planting with fish farming, in improving water quality and milkfish (Chanos chanos) productivity in Sawojajar Village, Brebes Regency. Three types of ponds were analysed: silvofishery with 40% mangrove vegetation (T40), silvofishery with 20% mangrove vegetation (T20), and conventional ponds without mangroves (T0). Water quality parameters, plankton and benthic diversity, and milkfish growth were measured and compared among the ponds. The results indicate that mangrove-integrated ponds exhibited better water quality stabilization, particularly in terms of salinity, pH, and Dissolved Oxygen (DO), which positively influenced overall ecosystem health. Mangrove vegetation also enhanced fish survival rates and supported long-term ecosystem stability. In contrast, conventional ponds exhibited higher short-term productivity but faced greater environmental risks due to unstable water quality. This study underscores the ecological and economic benefits of the silvofishery system as a sustainable model for coastal resource management.
Participatory Approaches to Land and Sea Use Patterns: A Case Study of Yavusa Navakavu, Fiji Bernard, Emeli; Kurniawan, Fery; Adrianto, Luky; Varo, Joeli
Coastal and Ocean Journal (COJ) Vol 9 No 1 (2025): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v9i1.63157

Abstract

Sustainable land and sea use planning aims to balance environmental conservation with socio-economic development. This balance is particularly critical in coastal communities where traditional knowledge is plays a key role in resource management. This study examines land and sea use pattern in Yavusa Navakavu, Fiji, through participatory mapping, geospatial analysis, and landscape metrics. The results indicate that agriculture and forest cover dominate the land cover (53.85%), while the marine area is primarily used for fishing (79.91%). The forested area is characterized by a high level of landscape cohesion (99.07%) and a low level of fragmentation (Edge Density: 72.44 m/ha), indicating strong ecological connectivity and minimal urbanization pressure. The Locally Managed Marine Area (LMMA) system effectively supports conservation within the local community-based governance. However, the effects of climate change and development pressure are still significant. However, the impacts of climate change and development pressures from Suva City remain significant. Therefore, future research should incorporate high-resolution temporal data, socio-economic factors, and ecological monitoring to improve resource management and adaptive coastal planning.
Penilaian Multi Bahaya Pesisir di Daerah Muara Sungai Randangan, Teluk Tomini, Indonesia Djuraini, Moh. Fahry
Coastal and Ocean Journal (COJ) Vol 9 No 1 (2025): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v9i1.64113

Abstract

This study aims to provide a preliminary assessment of coastal hazards in the Randangan River Mouth Coastline, Tomini Bay, Indonesia, using the Coastal Hazard Wheel (CHW) framework. The assessment focuses on key parameters such as geomorphology, wave exposure, tidal range, vegetation cover, sediment balance, and storm climate across a 14.46 km coastal stretch. Results reveal high levels of vulnerability, with ecosystem disruption, gradual inundation, and coastal erosion each posing very high to high risks along 8.35 km of the coastline, particularly in sediment plains and deltaic zones with minimal vegetation. Saltwater intrusion affects nearly the entire coastline (13.91 km) at moderate risk, while flooding presents a high risk across 13.54 km, indicating the limited buffering capacity of existing natural features. Despite data limitations, the CHW approach effectively identifies and maps multi-hazard exposure, providing a valuable tool for early-stage planning. The findings underscore the need for integrated coastal zone management, including ecosystem-based interventions and improved data collection, to support long-term resilience and adaptive strategies in vulnerable coastal settings.

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