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Journal of Marine Resources and Coastal Management
Published by Universitas Islam Negeri Sunan Ampel
ISSN : -     EISSN : 27220966     DOI : -
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science
Journal of Marine Resources and Coastal Management is a peer-reviewed journal published biannually by the Marine Science Departement, Faculty of Science and Technology, UIN Sunan Ampel. The Editors welcome contributions from research, which consider marine natural resources and coastal area with emphasis on environmental, technological, economic, institutional and policy aspects of conservation and utilization of marine resources and coastal zone management practices.
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Ilmu Lingkungan (Lain-Lain)
Articles 8 Documents
 1 
Search results for , issue "vol. 7 no. 2 (2026)" : 8 Documents clear
Temporal variability of meteorological and oceanographic parameters in Tuban Waters, Indonesia, and their relationships with ENSO and IOD Anggilia, Elsa; Ma’arif, Rodhi Naufal; Sawiji, Asri; Santoso, Eko Hadi
Journal of Marine Resources and Coastal Management Vol. 7 No. 2 (2026)
Publisher : UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/mrcm.v7i2.2552

Abstract

Global climate variability influences meteorological and oceanographic conditions in Indonesian coastal waters, including Tuban Waters. This study aimed to analyze the temporal variability and anomalies of meteorological and oceanographic parameters and to evaluate the relationships between the El Niño–Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD) with environmental variability in Tuban Waters during 2015–2024. Meteorological and oceanographic data were obtained from BMKG, NOAA, and NASA Ocean Color, including rainfall, sea surface temperature (SST), chlorophyll-a concentration, wind speed, wave height, current velocity, tidal elevation, the Oceanic Niño Index (ONI), and the Dipole Mode Index (DMI). Trend analysis, anomaly analysis, and Spearman correlation analysis were applied to assess temporal variability and climate–environment relationships. The results showed decreasing trends in wind speed, wave height, and rainfall, whereas current velocity exhibited moderate variability without a clear long-term trend. Rainfall variability was significantly negatively correlated with both DMI (ρ = −0.353, p < 0.01) and ONI (ρ = −0.293, p < 0.01), indicating that positive IOD and El Niño conditions were generally associated with reduced rainfall. SST anomalies were significantly negatively correlated with DMI (ρ = −0.332, p < 0.01), whereas their relationship with ONI was weak and not statistically significant. Chlorophyll-a anomalies exhibited weak correlations with both climate indices, suggesting that local oceanographic processes, particularly nutrient dynamics and water-column mixing, played a greater role in regulating biological variability. Overall, the results indicate that rainfall variability in Tuban Waters is influenced by both ENSO and IOD, whereas SST variability is more closely associated with IOD and regional oceanographic processes. In contrast, chlorophyll-a variability is primarily controlled by local oceanographic conditions, with only limited influence from large-scale climate variability. These findings provide an integrated understanding of meteorological and oceanographic variability and their interactions with climate variability in Tuban Waters, supporting coastal environmental monitoring and management.
Long-term variability of oceanographic–meteorological parameters in Banyuwangi waters, Indonesia, related to ENSO and the IOD Putri, Devi Amelia Eka; Zakky, Muhammad; Sawiji, Asri; Santoso, Eko Hadi
Journal of Marine Resources and Coastal Management Vol. 7 No. 2 (2026)
Publisher : UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/mrcm.v7i2.2555

Abstract

Oceanographic and meteorological parameters in tropical coastal waters are highly dynamic and strongly influenced by large-scale climate variability, particularly the El Niño–Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD). As global climate change intensifies atmospheric and oceanic variability, Indonesia’s coastal regions, including Banyuwangi waters, become increasingly vulnerable to environmental fluctuations. This study aims to analyze long-term trends and anomalies of oceanographic–meteorological parameters during 2015–2024 and evaluate their relationships with ENSO and IOD variability. The analyzed parameters included wind speed, significant wave height, surface current velocity, tides, rainfall, sea surface temperature (SST), and chlorophyll-a concentration. Linear regression was applied to identify long-term trends, while Spearman’s rank correlation analysis was used to assess relationships between climate indices and environmental parameters. The results indicate increasing trends in wind speed (6.47–6.76 knots), significant wave height (0.867–0.901 m), surface current velocity (8.18–8.65 cm s⁻¹), and tidal height (10.00–10.04 cm), whereas rainfall exhibited a decreasing trend from 6.14 mm to 4.88 mm during the study period. Correlation analysis revealed that ENSO and IOD exerted variable influences on rainfall, SST, and chlorophyll-a concentration, with significant correlations occurring only during specific years. ENSO showed a strong positive relationship with rainfall in 2023 (ρ = 0.704), while IOD exhibited a significant negative relationship with rainfall in 2015 (ρ = −0.666). Significant relationships were also identified between climate indices and SST as well as chlorophyll-a concentration, indicating that regional oceanographic conditions respond to both large-scale climate forcing and local environmental factors. Overall, the findings demonstrate that the impacts of ENSO and IOD on Banyuwangi waters are dynamic and temporally variable, emphasizing the importance of long-term monitoring to support coastal resource management and climate adaptation strategies.
Effect of different aeration systems on water quality and survival of whiteleg shrimp (Litopenaeus vannamei): A case study at IBAP Banjar Kemuning, Sidoarjo, Indonesia Dewi, Elberta Elysia Fawnia; Aliefya, Nisha; Setiawan, Adi Rizky; Romadhon, Muhammad Fajar; Prayudhi, Althafahnia Zalwa Oktavie; Widyaswara, Zahra Nabila; Perdanawati, Rizqi Abdi
Journal of Marine Resources and Coastal Management Vol. 7 No. 2 (2026)
Publisher : UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/mrcm.v7i2.2581

Abstract

Whiteleg shrimp (Litopenaeus vannamei) is one of the leading commodities in Indonesian brackishwater aquaculture due to its high production efficiency and strong market demand. Water quality is a key factor determining culture success, and aeration plays an essential role in maintaining dissolved oxygen (DO) levels while reducing the accumulation of toxic nitrogen compounds such as ammonia and nitrite. This study aimed to evaluate the effects of different aeration systems on water quality and the survival of whiteleg shrimp at the Brackish Water Aquaculture Installation (IBAP) Banjar Kemuning, Sidoarjo, Indonesia. A comparative descriptive study was conducted using two treatments: a complete aeration system consisting of paddle wheels, blowers, and diffusers, and a single aeration system using paddle wheels only. The observed water quality parameters included temperature, pH, salinity, DO, ammonia, nitrite, and nitrate. The results showed that the complete aeration system maintained more stable water quality, characterized by higher DO levels and lower ammonia and nitrite concentrations than the single aeration system. The average survival rate (SR) of shrimp cultured under the complete aeration system was 76.99%, compared with 73.28% in the single aeration system. Overall, the complete aeration system was more effective in improving water quality and enhancing shrimp survival. Nevertheless, unstable water quality conditions, particularly elevated ammonia and nitrite concentrations and low DO levels, were associated with the occurrence of White Spot Syndrome Virus (WSSV). These findings highlight the importance of optimizing aeration as part of an integrated water quality management strategy to support sustainable whiteleg shrimp aquaculture.
Characterization of water masses in the Sulu Sea using temperature–salinity (T-S) diagrams, dissolved oxygen, and chlorophyll-a distribution Firdaus, Muh; Mauludiyah
Journal of Marine Resources and Coastal Management Vol. 7 No. 2 (2026)
Publisher : UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/mrcm.v7i2.2606

Abstract

The Sulu Sea is a semi-enclosed tropical marginal basin influenced by complex exchanges between the South China Sea and the western North Pacific, resulting in distinctive hydrographic and biogeochemical characteristics. This study aims to characterize the water masses of the Sulu Sea using temperature–salinity (T–S) analysis and to examine the vertical distributions of dissolved oxygen (DO) and chlorophyll-a as indicators of biophysical processes. A key novelty of this study is the integration of T–S analysis with DO and chlorophyll-a observations to provide a comprehensive assessment of the relationships among water-mass structure, ventilation processes, and biological productivity in the Sulu Sea. The analysis was based on Conductivity–Temperature–Depth (CTD) observations collected at 22 stations during the SEAFDEC cruise in March–April 2015, with profiling depths reaching approximately 750 m. The T–S analysis identified two dominant upper-ocean water masses: Subtropical Lower Water (SLW), characterized by a salinity maximum of 34.5–34.9 psu within the thermocline layer (150–250 m), and North Pacific Upper Thermocline Water (NPUTW), which was primarily observed in the eastern stations and indicates the influence of Pacific inflow through the Bohol–Dipolog pathway. Dissolved oxygen exhibited strong vertical stratification, with high concentrations (>5 mg L⁻¹) in the surface layer and reduced values (~2 mg L⁻¹) below the thermocline due to limited ventilation and organic matter remineralization. Chlorophyll-a was concentrated within the upper euphotic zone and near the thermocline, reflecting the combined influence of stratification and nutrient availability. The integrated analysis demonstrates that water-mass distribution, oxygen dynamics, and phytoplankton variability are closely linked to circulation pathways and vertical stratification. These findings provide new insight into the coupling between physical and biogeochemical processes in the Sulu Sea and contribute to improving the understanding of tropical marginal sea ecosystems.
Assessment of coral health and lifeform composition using the CoralWatch method at Tunda Island, Banten, Indonesia Mumtasya, Lenia; Fariz, Arya Nural; Mauludiyah; Idris
Journal of Marine Resources and Coastal Management Vol. 7 No. 2 (2026)
Publisher : UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/mrcm.v7i2.2567

Abstract

The waters surrounding Tunda Island support coral reef ecosystems ranging from low to moderate condition, which nevertheless provide essential ecological functions for marine life and coastal communities. Coral reefs are formed through the deposition of calcium carbonate produced by reef-building corals in symbiosis with Symbiodinium. These symbiotic algae perform photosynthesis, supplying a substantial portion of the energy required by their coral hosts while contributing to coral pigmentation and overall reef health. However, coral health is increasingly threatened by environmental stressors, including rising sea temperatures and declining water quality. This study aimed to assess the health status of corals at Tunda Island, Indonesia, using the CoralWatch method based on changes in coral tissue coloration. Data were collected through random surveys at six observation stations distributed around Tunda Island. The results showed that the coral community was dominated by branching corals (36.8%), followed by boulder (26.1%), plate (25.7%), and soft corals (11.4%). Coral health assessment indicated that most colonies were under moderate physiological stress, with color Scores 3 (34.2%) and 4 (54.4%) being the most frequently recorded categories, reflecting reduced pigmentation and an increased susceptibility to bleaching. These findings provide baseline information for long-term coral reef monitoring and highlight the importance of sustainable coastal management to reduce environmental stress and maintain coral reef resilience at Tunda Island.  
Hydrodynamic modeling using Delft3D for port safety in Bawean waters, Indonesia Asmara, Syafiq; Prasetyono, Satria Dermaga; Pramanda, Brilian Putra; Fahmi, Muhammad Yunan
Journal of Marine Resources and Coastal Management Vol. 7 No. 2 (2026)
Publisher : UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/mrcm.v7i2.2563

Abstract

This study aims to assess the hydrodynamic conditions of the waters around Bawean Port, Gresik, using Delft3D numerical modeling to support navigational safety. A quantitative approach was applied using nested-grid simulations to capture both large-scale and detailed hydrodynamic processes. The model incorporated bathymetry, tidal forcing, wind, and wave data obtained from global datasets, including GEBCO, TPXO 8.0, and ECMWF ERA5. Simulations were conducted for two representative monsoon seasons, namely the west monsoon (January) and east monsoon (July), with each simulation covering a one-month period. The results indicate that water depths in the study area range from 0 to 6 m, highlighting the need for careful management of port and shipping lane depths to ensure navigational safety. Tidal analysis indicates a mixed tide with a predominantly semi-diurnal character. Model validation showed good agreement with observed data, with RMSE and MAE values of 0.0581 m and 0.0426 m, respectively, indicating good model performance. The hydrodynamic analysis revealed distinct seasonal variations in wind and wave characteristics, with dominant winds originating from the west and northwest during the west monsoon and from the east and southeast during the east monsoon. Maximum wave heights reached 1.55 m during the west monsoon and 1.83 m during the east monsoon. Current velocities were generally low, ranging from 0 to 0.4 m/s, with flow directions influenced by tidal conditions and coastal structures, particularly harbor piers. Based on these findings, dredging of the shipping lanes is recommended to provide sufficient depth for larger vessels, while appropriate speed restrictions are recommended to maintain vessel stability and navigational safety. Overall, the modeling results provide important insights into the tidal, current, and wave dynamics of Bawean waters and can support shipping lane management, port planning, and coastal management.
Simulation of sea breeze events during the 2024 dry season along the Cilacap coastline, Indonesia, using the WRF model with satellite data assimilation Arzhida, Bima; Haryanto, Yosafat Doni; Avrionesti; Sabrina , Purwanti Lelly
Journal of Marine Resources and Coastal Management Vol. 7 No. 2 (2026)
Publisher : UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/mrcm.v7i2.2617

Abstract

Sea breeze is a coastal meteorological circulation driven by the thermal contrast between land and adjacent water. This study identified and simulated selected sea-breeze events over the Cilacap coastal region during the dry season (May–August 2024). A modified objective filtering procedure was applied using wind speed, wind direction, a positive land–coastal surface air temperature difference, flow persistence, and precipitation. Two events were selected, occurring on 14 May and 24 August 2024. These events were simulated using the Weather Research and Forecasting–Advanced Research WRF model with three-dimensional variational assimilation of Himawari-9 infrared radiance data. The horizontal fields showed that onshore flow began to develop at approximately 11:00 LT and became most continuous around 13:00 LT. On 14 May, the circulation weakened by approximately 17:00 LT, whereas on 24 August it remained identifiable until approximately 19:00 LT. Statistical evaluation against automatic weather station (AWS) observations yielded wind-speed correlation coefficients of 0.534 and 0.923, with root mean square error (RMSE) values of 1.196 and 0.851 m/s for 14 May and 24 August, respectively. Wind-rose comparisons showed generally consistent onshore directional patterns, although differences remained in directional frequency and wind-speed classes. Because no unassimilated WRF control experiment was conducted, the verification assesses only the agreement between the WRF Data Assimilation (WRFDA) simulation and AWS observations and does not quantify the added value of Himawari-9 data assimilation.
Analysis of coral cover using the Underwater Photo Transect (UPT) method on Tidung Island, the Thousand Islands, Indonesia Effendi, Muhammad Ardiansyah; Maisaroh, Dian Sari; Munir, Misbakhul; Widodo, Mikael Prastowo Sesotyo
Journal of Marine Resources and Coastal Management Vol. 7 No. 2 (2026)
Publisher : UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/mrcm.v7i2.2740

Abstract

Coral reef ecosystems are important marine ecosystems that provide ecological, economic, and social benefits, but their condition is increasingly threatened by anthropogenic activities and environmental pressures. Tidung Island is a marine tourism destination with relatively high human activity, which may affect the condition of its coral reef ecosystem. This study aimed to assess the condition of coral reef cover and identify the environmental conditions associated with differences in coral reef conditions around Tidung Island, Thousand Islands, DKI Jakarta. The study was conducted from May, 14–18 2026 using a quantitative descriptive approach. Coral cover data were collected using the Underwater Photo Transect (UPT) method at four observation stations, with photographs analyzed using Coral Point Count with Excel extensions (CPCe). Hydro-oceanographic parameters, including temperature, salinity, water clarity, and pH, were also measured at each station. The results showed considerable variation in live coral cover among stations. Station 3 had the highest coral cover at 55.3% and was categorized as good, while Stations 1 and 2 had coral cover of 31.6% and 31.4%, respectively, and were categorized as moderate. Station 4 had the lowest coral cover at 3.3%, indicating a degraded condition. The overall average coral cover was 30.5%, indicating that the general condition of coral reefs ranged from moderate to degraded. Hydro-oceanographic parameters generally fall within a range that supports coral reef development, with temperatures of 30–31°C, salinity of 30–31‰, water clarity of 5–8 m, and a pH of 7. Therefore, anthropogenic pressures and physical disturbances—particularly tourism, boat moorings, fishing, and maritime transportation—are suspected to be factors contributing to coral reef degradation, rather than the measured hydro-oceanographic conditions. These findings highlight the need for better management, reduction of anthropogenic pressures, and more intensive conservation efforts to support the recovery and sustainability of coral reefs around Tidung Island.

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