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INDONESIA
Journal of Coastal and Ocean Sciences
Published by Universitas Riau
ISSN : 27454355     EISSN : 27464512     DOI : -
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology Physics
Journal of Coastal and Ocean Sciences is a journal publishes scientific articles from research by lecturers and other researchers in the marine sector. Covers aspects of biology, physics and chemistry, both for brackish waters (mangrove swamps, river estuaries) and marine waters (coastal and offshore seas).
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Perairan
Articles 293 Documents
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The Effect of Different Substrates on Laboratory Scale Cultivation of Sargassum cristaefolium Waang, Dinda Christasya; Cokrowati, Nunik; Abidin, Zaenal
Journal of Coastal and Ocean Sciences Vol. 5 No. 2 (2024): May
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.5.2.107-113

Abstract

Seaweed is an excellent aquatic commodity to be cultivated. One type is Sargassum cristaefolium, which contains alginate. Alginate is needed in various industrial fields for export and import. The high demand needs to be balanced by cultivation. One of the factors that affect cultivation is the substrate. The substrate as a habitat for seaweed is very diverse. This study aimed to analyze the best substrate for the growth of S.cristaefolium seaweed cultivated on a laboratory scale. This study was conducted for 20 days using a completely randomized design of 4 treatments and four repetitions to obtain 16 experimental units. The test treatments used were sand, coral, volcanic rock, and sand and coral substrates. The Anova test results showed that different substrates significantly affected the survival of S. cristaefolium. P2 with coral substrate gave the highest results for survival of 92.25%, final weight of 18.25 g, and alginate yield of 90%. This study concludes that the best substrate for the growth of S. cristaefolium is a coral substrate with survival reaching 91.25%, a final weight of 18.25 g, and an alginate yield of 90%.
Macrozoobenthos Community Structure as an Indicator of Water Quality in the Intertidal Zone of Pariaman City, West Sumatra Province Manalu, Govinda Hendra; Siregar, Yusni Ikhwan; Tanjung, Afrizal
Journal of Coastal and Ocean Sciences Vol. 5 No. 2 (2024): May
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.5.2.114-124

Abstract

Community structure refers to the arrangement and composition of species in a natural community and their abundance. Ecologists use various indices to assess community structure, including diversity index, evenness index, and dominance index. One helpful indicator for evaluating water quality is the presence and characteristics of macrozoobenthos, organisms living in the sediment of aquatic environments. The study focused on the community structure of macrozoobenthos as an indicator of water quality in the coastal waters of Pariaman City, West Sumatra. Conducted between February and March 2023, the research analyzed samples collected from the Marine Biology and Marine Chemistry Laboratories at Universitas Riau. Findings revealed the presence of 7 phylum, eight genera, and 16 macrozoobenthos species, with abundance ranging from 8.56 Ind/m2 to 18.44 ind/m2. The diversity index indicated moderate diversity, while the evenness index suggested an uneven distribution of individuals. No dominant species were found. Based on the analysis of macrozoobenthos community structure, water quality in Pariaman City's coastal waters was classified as good
Species Composition and Economic Value Status of Sea Cucumbers in the Waters of Pulau Banyak, Aceh Singkil Afiat, Sukra; Suriani, Mai; Kusumawati, Ika; Susetya, Ipanna Enggar
Journal of Coastal and Ocean Sciences Vol. 5 No. 2 (2024): May
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.5.2.125-130

Abstract

The sea cucumber is one of the organisms from the Echinodermata phylum, Holothuridae class. Sea cucumbers (Holothuria) can be found throughout the coastal waters, ranging from shallow tidal areas to deeper waters. This study aims to determine the species composition and economic value of sea cucumbers in Banyak Island waters. This research was conducted from August to September 2023, coinciding in the waters of Banyak Island Aceh Singkil. The research method was carried out by identifying sea cucumber documentation collected directly from local fishermen and conducting direct interviews with collectors who operate to obtain information about the selling price of sea cucumbers. Based on observations, sea cucumbers obtained in the waters of Banyak Island consist of several species in 2 families. The composition of sea cucumber species obtained includes Holothuria atra, H. fuscocinerea, H.edulis, H. fuscopunctata, and Stichopus pseudohorrens. Sea cucumbers found by fishermen have varying economic values, from cheap to expensive prices. The price is influenced by various factors, including the type of sea cucumber and its weight. Each type of sea cucumber has a different selling value, and its weight size is one of the main determining factors in the selling price
Analysis of Microplastic Containment in Coral Grouper (Cephalopholis miniata) and Brown-Marbled Grouper (Epinephelus fuscogattatus) Grown on the Station of Baguk Island, Singkil Aceh Inayah, Safa Aulafi; Nufus, Hayatun; Rizal, Muhammad; Oktavinanda, Giovanni; Astuti, Rika
Journal of Coastal and Ocean Sciences Vol. 5 No. 2 (2024): May
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.5.2.131-134

Abstract

Baguk Island is one of several islands in the Aceh Singkil Regency. This water area is included in a coastal ecosystem widely used for various human activities, such as sea transportation routes; these activities can increase domestic and anthropogenic waste, including microplastics. The study aimed to determine the type and amount of microplastic content in coral groupers (Cephalopholis miniata) and Brown-marbled grouper (Epinephelus fuscogattatus), fish often consumed by the community. This research was conducted in August-November 2023 in the tangkahan of Baguk Island village using quantitative methods where data collection was carried out through field surveys and laboratory experiments based on the NOAA (National Oceanic and Atmospheric Administration) method but with several differences, namely the number of samples and the addition of hydrogen peroxide (H2O2) solution. The results of the identification of this study found as many as three types of microplastics in coral grouper fish, namely fragment, film and fiber types and four types of microplastics in Brown-marbled grouper fish with fragment, film, fiber and granule types
Sea Surface Temperature Distribution Mapping and the Relation with Coral Reef Distribution Using Modis Aqua Imagery in the Waters of Padang City Noprianda, Renza; Mubarak, Mubarak; Siregar, Yusni Ikhwan
Journal of Coastal and Ocean Sciences Vol. 5 No. 3 (2024): September
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.5.3.143-150

Abstract

Mapping sea surface temperature and coral reef distribution is vital for understanding the marine environment's dynamics and developing effective conservation strategies. The ideal temperature for coral reefs is between 27-29ºC. This research aims to describe and analyze the relationship between sea surface temperature and chlorophyll-α to the potential zone of coral reefs in Padang City, West Sumatra. The data used in this research is MODIS Aqua level 3 imagery data with 4 km resolution. The imagery processing stages include imagery data processing using SeaDAS software, namely the cropping and reprojection process, and ArcGIS software, namely the interpolation and classification process and map layouting. The results showed that the classification of the distribution of sea surface temperature in Padang City ranged from 26-29ºC, and the average concentration of chlorophyll-α distribution was 1.41 mg/m3. Based on these results, it can be concluded that Padang city waters have an ideal sea surface temperature for coral reefs and are supported by a reasonably high chlorophyll-α concentration
Tidal and Bathymetry Characteristics in Dumai River Estuary in Dumai City, Riau Province Maulana, Fariz; Mubarak, Mubarak; Rifardi, Rifardi
Journal of Coastal and Ocean Sciences Vol. 5 No. 3 (2024): September
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.5.3.151-158

Abstract

This research was carried out in July 2023 in Muara Sungai Dumai, Dumai City, Riau Province. This study aims to conduct depth mapping analysis using echosounders based on reference corrections to tides. Tidal analysis is performed to determine reference values such as MSL (Mean Sea level) and tidal characteristics. The methods used are survey methods and quantitative analysis. The results showed that the waters of the Dumai River Estuary were mixed tide prevailing semi-diurnal with a formzahl value of 0.29. There is tidal asymmetry with the time to the high tide faster than the time to low tide. The depth ranges from 0.28 to 7.34 m, increasing to 40 m in the Rapat Strait. The weak current and the difference in HHWL values of 3.55 m and MSL 0.14 m affect water level rise due to bathymetric changes at high tide
Analysis of Marine Ecotourism Suitability Based on Physical Environmental Conditions and Water Quality Index at Arta Sungai Limau Beach, Padang Pariaman Regency Livi, Aldisa Sipti; Mubarak, Mubarak; Yoswaty, Dessy
Journal of Coastal and Ocean Sciences Vol. 5 No. 3 (2024): September
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.5.3.159-165

Abstract

Marine ecotourism is a type of tourism that involves activities related to marine activities carried out under or above the sea surface. Marine ecotourism generally covers three areas: the sea surface, under the sea, and on the coast. Marine ecotourism activities, especially beach tourism, are highly dependent on the condition of the oceanographic parameters of the region for the safety and comfort of tourists. This research was conducted in Arta Beach, Padang Pariaman Regency, West Sumatra Province, to determine the suitability of marine ecotourism at Arta Beach based on the parameters of physical environmental conditions. This study used a survey method: observation and data collection at the research location. Data analysis is used for the Tourism Suitability Index (IKW) method for physical environmental parameters and the STORET method for water quality parameters. The results of this study indicate that the tourism suitability index based on the physical condition of the environment carried out at Arta Beach at station 1 received a value of 2.49, including the suitable category, at station 2 received a value of 2.5, including the suitable category and station 3 received a value of 2.49 including the suitable category. The overall average value of IKW on Arta Beach is 2.49, included in the suitable category. This value means this beach can be used for beach ecotourism. Water quality parameters are analyzed using the storey method. The data obtained from the pH, DO salinity, and temperature parameters meet the quality requirements (good condition) and are suitable for marine tourism activities
Analysis of the Relationship Between Phytoplankton Abundance and Total Oil Content in Bayur Bay Waters, Padang City, West Sumatera Province Ghifari, Muhammad Fadil; Nurrachmi, Irvina; Effendi, Irwan
Journal of Coastal and Ocean Sciences Vol. 5 No. 3 (2024): September
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.5.3.166-174

Abstract

The research was conducted in January - February 2024 in the waters of Teluk Bayur, Padang City, West Sumatra Province. This study analyzes the relationship between total oil content and phytoplankton abundance in Bayur Bay waters. The method used in this study is a survey method with a purposive sampling technique. Based on the results found. The value of oil content at each station and sampling point varies. The highest value is obtained at station III with an average value of 0.00005387 ppm, while the lowest is obtained at station IV with a content value of 0.00001153 ppm. In the Bayur Bay waters, 16 species of phytoplankton were found, consisting of Bacillariophyceae (10 species), Cyanophyceae (2 species), Coscinodiscophyceae (2 species), Dinophyceae (1 species), Raphidophyceae (1 species). Phytoplankton abundance in Bayur Bay waters shows different values for each station, where the highest average phytoplankton abundance is found at station IV, with a total of 9216.55 (ind/L). In contrast, the lowest abundance is found at station I, with a total of 1016.77 (ind/L). The results of linear regression analysis, the relationship between phytoplankton abundance and oil content in Bayur Bay waters at each station obtained a mathematical equation y = 6245.3 + (-7E+07x) with a coefficient of determination R2 = 0.3016 and the correlation coefficient r = 0.5491. With the conclusion that the relationship between phytoplankton abundance and total oil content in Bayur Bay waters is included in the average group.
Determination of Competence, Work Discipline, and Utilization of Technology towards Public Satisfaction Through Service Quality in the Fisheries Service of Karimun Regency Syamsurizal, Syamsurizal; Ngaliman, Ngaliman; Yanti, Sri
Journal of Coastal and Ocean Sciences Vol. 5 No. 3 (2024): September
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.5.3.175-180

Abstract

High employee competency will ensure that every task and responsibility can be completed effectively and efficiently. Good work discipline will create an orderly and productive work environment, improving the quality of services provided to the community. Technology also plays an equally important role; because of sophisticated technology, service processes can be carried out more quickly and accurately, reducing human error and increasing people's comfort in accessing public services. The research aims to determine the effect of competence, work discipline, and the use of technology on community satisfaction through service quality. The study was conducted for 5 months (March –July) at the Karimun Regency Fisheries Service. Quantitative research methods were analyzed using the Smart PLS application from questionnaire data with 201 respondents and concluded that there is a direct determination of employee competency, work discipline, use of technology, and service quality on community satisfaction in the Karimun Regency Fisheries Service area. There is a determination of employee competency in work discipline and the use of technology directly on the quality of services of the Karimun Regency Fisheries Service. It is recommended to the Head of the (Karimun Regency Fisheries Service: 1) optimize the number of employees who take part in work competency training, especially regarding increasing knowledge and skills according to the fields listed. 2) Providing training programs or seminars to improve employee work discipline regarding the importance of arriving on time, effectively using time, compliance with agency regulations, and achieving work targets. 3) Optimizing an integrated information system in providing services and basic skills using the latest technology, which can help communicate with the service user community by keeping up with the latest technological developments and meeting needs in completing tasks appropriately based on the availability of information
The Effect of Coconut Water on Increasing Biomass Production of Marine Algae (Kappaphycus alvarezii) Ode, Sri Jafitra Taufik; Tuiyo, Rully; Mulis, Mulis
Journal of Coastal and Ocean Sciences Vol. 5 No. 3 (2024): September
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.5.3.181-184

Abstract

A shortage of seeds and low-quality production of the marine algae Kappaphycus alvarezii are classic problems that farmers encounter. Therefore, growth hormones, a natural ingredient in young coconut water, must be used. This research aimed to analyze the growth rate of the marine algae K.alvarezii using coconut water immersion treatment at different times (0 minutes, 30 minutes, 40 minutes, and 50 minutes) with an initial weight of 50 g. This research was conducted in South Sulawesi, Wakatobi Regency, Wangi-Wangi Selatan District, Liya One Melangka Village from June to October 2023. This research used the RAL method to measure the weight of the marine algae Kappaphycus alvarezii every 10 days and measure water quality for 40 days. The results of the ANOVA analysis in the soaking treatment of K.alvarezii sea algae seeds showed significant effects

Page 13 of 30 | Total Record : 293

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