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Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan
Published by Universitas Syiah Kuala
ISSN : 20897790     EISSN : 25026194     DOI : 10.13170/depik
Core Subject : Science, Education, Engineering,
Earth & Planetary Sciences Education Engineering
Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan is a peer review international journal, this journal is publishing high-quality articles in aquatic sciences and fisheries in general. The aim of the journal is to publish and disseminate the current or new findings of the research, and give a significant contribution to the development of fisheries and aquatic sciences in several topics, but not limited to: Fisheries (Aquaculture, Capture Fisheries, Fish Processing) Aquatic Ecology (Freshwater, Marine, and Brackishwater) Aquatic Biology (Fish, Mollusk, Crustacean, Plankton, Coral reefs) Oceanography
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Oseanografi
Articles 21 Documents
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Search results for , issue "2025: Special Issue ICFM" : 21 Documents clear
General description of the habitat of Acropora halmahera based on a literature approach (Wallace & Wolstenhome 1998) Ismail, Firdaut; Siolimbona, Abdul Ajiz; Akbar, Nebuchadnezzar; Paembonan, Rustam E; Tahir, Irmalita; Najamadidin, Najamuddin; Angkotasan, Abdul Motalib
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan 2025: Special Issue ICFM
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.0.0.46992

Abstract

Acropora halmahera is one of the coral species that has an important role in the coral reef ecosystem Wolstenhome (1998) found in Loloda Island. A. halmahera is an endemic species found in the Halmahera sea. This coral species has not yet received information about the distribution in the marine area of the North Maluku archipelago. Habitat influences morphogenetics. Information on the general description of the habitat of this species has not been found (unpublished). A. halmahera is a coral species that ecologically also plays a role in influencing sedimentation rates and serves as a place for marine organisms to live. The study aims to describe the habitat of A. halmahera in Small Islands, North Maluku. Data collection of Acropora halmahera and coral life forms on three islands using Line Intercep Transect (LIT). Samples of A. halmahera were taken 32 cm branch. Morphometric measurements of A. halmahera were conducted in the laboratory. Environmental variables were takenwas conducted to see the relationship of the environment to the station. The results showed that A. halmahera has a habitat preference at a depth of 5-20 meters, temperature 29-33 C, salinity 32-35 ppt, and pH 7.1-8. Sandy bottom substrate conditions for the growing area of A. halmahera species. PCA analysis showed that each station characterized environmental variables. Data showed that 13 coral life forms were found with variations in coral cover at each station. The environment was generally favorable for species to grow and thrive. These findings provide useful insights for coral reef conservation and management in the Halmahera region, and can serve as a reference for further research on other coral species.Keywords:EndemicArchipelagoBranching CoralMorphologySmall Island
Mapping and validation of spatial algorithm for monitoring turbidity of seagrass habitat using sentinel-2B imagery in Ternate Island Paembonan, Rustam Effendi; Bengen, Dietriech Geoffrey; Nurjaya, I Wayan; Agus, Syamsul Bahri; Natih, Nyoman Metta N; Subhan, Beginer; Santoso, Joko
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan 2025: Special Issue ICFM
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.0.0.46989

Abstract

Turbidity is a parameter of the marine environment that greatly affects the condition of seagrass whose habitat is an intertidal zone in shallow sea waters. Seagrass is an important type of ecosystem that can be found in several coastal areas of Ternate Island. This study aims to analyze the turbidity conditions of seagrass habitat waters and apply a remote sensing algorithm using Sentinel 2B images. The turbidity research method was carried out by field measurements. The turbidity algorithm model used refers to references with mathematical equations (Rrs665-0.014)/0.013, and the development of a new algorithm as a comparison algorithm. Both algorithms were validated with field data to determine the level of accuracy using the Normalized Mean Absolute Error (NMAE) and determination coefficient (R2). The results were obtained from turbidity data with values ranging from 0.3 NTU to 1.5 NTU with an average value of 0.87 0.45 NTU. The Sentinel 2B image in this study was restored with geometric corrections, atmosphere, radiometric digital values, land masking, and sun glint. The turbidity algorithm model used obtained good accuracy in mapping and monitoring the turbidity of seagrass habitat waters on Ternate Island. The application of the turbidity algorithm used as a reference in this study has an NMAE value of 50.44 and R2 of 0.8822, while the newly discovered turbidity algorithm has an NMAE value of 29.38 and R2 of 0.8827.Keywords:remote sensingecosystemscoastalsedimentationNorth Maluku
Carbon stock estimation of mangrove vegetation using remote sensing in Bacan, Awanggoa District, South Halmahera Supyan, Supyan; Samman, Ardan; Achmad, M. Janib; Fadel, Ariyati; Kadir, Maskur Abdul
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan 2025: Special Issue ICFM
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.0.0.46978

Abstract

Awanggoa Village in Bacan District, South Halmahera Regency, has experienced significant residential expansion, converting around 9 hectares of mangrove land into a residential area. The remaining mangrove ecosystem, covering an area of 16.84 hectares in the northern part of the village, is starting to experience degradation, especially along the coast and southern areas. This condition requires management policies that ensure the sustainability of the ecosystem. The purpose of this research is to analyze the NDVI condition of the mangrove ecosystem, as well as measure biomass, carbon stock, and CO2 absorption, using remote sensing methods via the GEE application (https://code.earthengine.google.com) with data collected from January 1 to December 31, 2023. The research results show a total biomass of 101.21 tons ha, carbon stock of 47.57 tons C ha, and CO2 storage of 174.88 tons C. Dense vegetation is very important for carbon storage and emission reduction, thus supporting sustainable mangrove ecosystem management and environmental conservation efforts.
Coral recruitment enhancement in fish shelter media composed of fly ash and nickel slag on Obi Island, South Halmahera Hutami, Prasari Riski; Ganesa, Aldico Satria; Karyoto, Jesaya Alfredo Alexandro; Prayogo, Windy
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan 2025: Special Issue ICFM
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.0.0.46932

Abstract

The reefcube, a modular structure, serves as a primary habitat for fish and aids in the recruitment of new coral. The reefcube is predominantly made from fly ash and nickel slag, by-products of pyrometallurgy process that contain high content of CaO, MgO, dan SiO2. These compounds aid in the calcification process of newly recruited corals. This project has been conducted since 2021, which includes deployment processes, monitoring, and data collection. The data collection methods involve randomly sampling natural coral recruits that have grown on the modular structures and measured periodicaly. So far, the coral growth ranged from 2.41 cm to 12.90 cm over the course of two years. The observed genera include Acropora, Isopora, Pocillopora, Millepora, Porites, and all of which have shown significant growth on the Reefcube. There were 24 fish families recorded during the monitoring period, with the Pomacentridae family accounting for 53% of all sightings. The most commonly observed size range was between 0-5 cm and 16-20 cm, which represented 29% and 28% of the total observations. Within this size range from Pomacentridae and Acanturidae family. Several individuals of the species Abudefduf vaigiensis from the Pomacentridae family were notably present.Keywords:Coral reef ecosystemFish shelterGrowthNickle slagReefcube
The use of technical chlorine for seawater sterilization in the rearing of barramundi larvae Lates calcarifer Astuti, Ni Wayan Widya; Mastuti, Indah; Sedana, I Made; Sunarto, Sunarto; Mustakim, Mustakim; Suwitra, I Nyoman; Mujiono, Mujiono; Kurdi, Kurdi; Dewi, Luh Yuliani; Tantra, Kadek Mas; Katimin, Katimin; Shadiq, Ja'far; Muzaki, Ahmad
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan 2025: Special Issue ICFM
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.0.0.46920

Abstract

Disease prevention is very important in the rearing of barramundi larvae, one of which is by sterilizing the seawater using technical chlorine. This study aimed to determine the effect of seawater sterlization use technical chlorine for rearing barramundi larvae on growth, survival, and water quality. The treatment in this study was different seawater used for water exchange during larval rearing. Seawater was sterilized with 25 ppm technical chlorine for 24 hours. Before use, the water was neutralized using 12.5 ppm sodium thiosulfate. As a control in this study, direct seawater or untreated sea water was used for water exchange. The study was conducted with 3 replications. The parameters observed in this study were growth, survival, virus monitoring, growth variation, and water quality. Sterilization of seawater with 25 ppm technical chlorine used for rearing larvae of barramundi has no significant effect on growth, survival, growth variation and water quality of rearing larvae. The use of filtered seawater is recommended in the sterilization of seawater for rearing larvae of barramundi. Increasing the dose of chlorine or using chlorine which has a high active substance could increase effectiveness of water sterilization.Keywords:Technical chlorineSterilizationRearing larvaeBarramundiLates calcarifer
The abundance of zooxanthellae on massive and branching coral reefs at Bama Beach, Baluran National Park, Situbondo, East Java Widhi, Raut Nugrahening; Paluphi, Raut Wahyuning; Azis, Muh. Aksa; Abubakar, Salim; Sunarti, Sunarti
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan 2025: Special Issue ICFM
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.0.0.46918

Abstract

Zooxanthellae are single-celled microalgae that live symbiotically in coral tissue. The porpose of this study was to determine the abundance of zooxanthellae in massive and branching corals. The research method used was descriptive analysis. The sampling technique used direct field sampling by chisels, both on massive coral reefs or branching coral reefs. Observation of zooxanthellae was conducted in the laboratory using a microscope. The results obtained from the research indicate that massive corals have a relatively higher abundance of zooxanthellae with values of 109 x 105 cells/cm than branching corals with values of 73 x 105 cells/cm. In addition, massive corals are more resistant to bleaching than branching corals due to their large reserves of zooxanthellae and their ability to adapt to environmental stress.Keywords:AbundanceZooxanthellaeMassiveBranching
Preliminary study oceanography and environmental parameters of habitat endemic species Halmahera walking shark (Hemiscyllium halmahera) on Indopacific Ocean Area in North Maluku Indonesia Natih, Nyoman Metta N; Akbar, Nebuchadnezzar; Bengen, Dietriech G; Nurjaya, I Wayan; Subur, Riyadi; Baksir, Abdurrachman; Ismail, Firdaut; Wahab, Iswandi; Arafat, Dondy; Paembonan, Rustam E; Siolimbona, Abdul Ajiz; Rasidi, Rasidi; Budiman, Asep Sandra; Subhan, Beginer
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan 2025: Special Issue ICFM
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.0.0.46913

Abstract

The Halmahera Walking Shark (Hemiscyllium halmahera) is an endemic species in the Halmahera Sea. Information related to the environment in general has not been described in a complex manner. The environment is the main factor to support the life of biota. Environmental characteristics are a determining factor in the sustainability of biota. The study aims to provide information related to the physical environment of the habitat of the H. halmahera species. Primary data collection was carried out directly (in situ). Current data was taken using the Lagrange method using a currents drogue. Tides using tidal palms and observed for 24 hours. Secondary data was taken from Marine Copernicus and the Geospatial Information Agency (BIG). All data were tabulated and analyzed by Ocean Data View (ODV) software. The results of the study found that the surface current velocity was found to be in the fast current category. Current speed descriptively provides information on the life of H. halmahera. Primary data shows that the direction of the surface current moves to the east and north. Secondary data in vertical distribution shows weak zonal and meridional current shifts. The tidal pattern was found to be two high and low tides (semidiurnal). The distribution of surface temperature was found to be around 30-32oC. The vertical temperature profile found three layers, namely 1-13m (30oC), 65m (25oC) and 71m (20oC). The chemical environment showed all normal variables. The physical and chemical environmental conditions support H. halmahera to inhabit the sea area of Morotai Island. The environmental description has provided a brief understanding of how the ecological role of the H. halmahera species. Management and sustainability of the environment in the future due to climate change can be done with information on habitat characteristics.Keywords:coral triangleHalmaheranicheNorth Malukutropical
Blue carbon dynamics and mangrove extent: a case study from the IndonesiaTimor Leste Coastal ecosystem Sitanggang, Wanri; Wijayanti, Diah Permata; Pribadi, Rudhi; Suryono, Chrisna Adhi; Pitaloka, Maria Dyah Ayu; Naitkakin, Egidius; Soares, Daniel Candido Da Costa; Pramudya, Herning; Kiuk, Yosni
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan 2025: Special Issue ICFM
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.0.0.46912

Abstract

Around 20% of mangrove forests in Indonesia are in a degraded condition, which has a negative impact on the potential for blue carbon storage. When mangroves are damaged or degraded, carbon stored in the soil and vegetation can be released back into the atmosphere as CO2, ultimately increasing greenhouse gas emissions and exacerbating climate change. Mangrove forests can store up to four times more carbon per hectare, around 8001,200 tons per hectare, than terrestrial tropical forests. This research was conducted in the Wini mangrove forest area, North Central Timor, East Nusa Tenggara (NTT) which directly borders Timor Leste. The determination of the location of the observation station was based on a map of changes in mangrove forest land use obtained from the Geospatial Information Agency. The parameters measured included organic carbon, mangrove area and sediment type. Organic carbon was analyzed using the Loss on Ignition (LOI) method, and sediment grain size was measured using a particle size analyzer. The results of the study showed that the average organic carbon stock in mangrove forests reached 570,600843,600 tons per hectare, with an average change in the area of mangrove forests from 2013 to 2023 of 181.29 hectares and the type of sediment dominated by sandy mud. This change in area is caused by the conversion of mangrove land into ponds, rice fields, and settlements.Keywords:MangroveCarbonSedimentborder Area
Study of fisherman income and affecting factors (study in South Halmahera) Runtunuwu, Prince Charles Heston; Darmanto, Erlambang Budi
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan 2025: Special Issue ICFM
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.0.0.46939

Abstract

The objectives of this study is to analyze the direct effect of the amount of catch on fish prices and fishermen's income, operational costs on fish prices and fishermen's income, fish prices on fishermen's income, the amount of catch, operational costs and to on fishermen's income through fish prices. The analytical method used in this research is path analysis using the SPSS program as a statistical test tool. The results of this study indicate that: (1) the amount of catch has a positive and significant effect directly on the amount of catch and has a positive and significant effect directly on the income of fishermen. (2) Operating costs have a positive and significant effect directly on fish prices and fishermen's income. (3) Fish prices have a positive and significant direct effect on fishermen's income.(4) The number of fishermen's catch has a positive effectindirectly to fishermen's income through fish prices. (5) Operational costs have an indirect negative effect on fishermen's income through fish prices.Keywords:CostDevelopmentEconomicFisheryPath Analysis
Analysis of shiping activity and water quality in the Silugonggo Juwana River Channel Saraswati, Indah; Anggoro, Sutrisno; Wijayanto, Dian; Prasetiawan, Andi
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan 2025: Special Issue ICFM
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.0.0.46876

Abstract

The role of the river as a site for riverine activities has a huge impact on the economic sustainability of the community and the riverine ecosystem. The Silugonggo River is the only river in Pati Regency that is a very densely populated shipping route. This research was conducted along the Silugonggo River from the Juwana Bridge to the estuary. The purpose of this study was to determine ship activity in the Silugonggo River, determine the feasibility of facilities at Juwana Port and analyze environmental conditions along the Silugonggo River. The method used is a qualitative method with observation techniques and laboratory analysis, which is carried out by observing and recording conditions in the field systematically using primary data in the form of water conditions and secondary data in the form of ship activity and construction data. The results showed that the activities in the port of Juwana include mooring, loading and unloading of goods, ship repair and refuelling of ships. The level of water pollution in the Silugonggo River at 5 sampling points shows that the oil content in the water for points 1, 3, 4 and 5 is still considered safe because it is below the quality standard, but the oil content at point 2 has a very high value from the set quality standard which is 20 mg/L. The pollution that occurs is caused by shipping activities that dump waste into the water and fuel filling activities.Keywords:marine polutionportriverwater qualityoil spill

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