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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 20 Documents
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Search results for , issue "Vol. 5 No. 3 (2024): September" : 20 Documents clear
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
Composition of the Catch of 28 GT Boat Bagan in Carocok Tarusan Waters, Pesisir Selatan District West Sumatra Province Afriadi, Ahmad; Mairizal, Mairizal; Magwa, Rizky Janatul; Alwi, Yun; Lisna, Lisna; Ramadan, Fauzan
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.5.3.185-188

Abstract

The waters of West Sumatra are one of the richest in Indonesia, and they have potential in the fisheries sector. They use various types of fishing gear, one of which is boat bagan. One of the most common fishing tools in fishing ports is the boat bagan in the waters of Carocok Tarusan, West Sumatra. The catches usually caught by boats are anchovies and tuna. The research aims to determine boat bagan composition in Carocok Tarusan Waters, Pesisir Selatan Regency, West Sumatra Province. This research was carried out on 20 July – 20 August 2023. The method used in this research was a survey method, with direct observations in the field and conducting interviews with fishermen. The tools used in this research were scales, a logbook, a cellphone camera, a ruler, a fishfinder, and a refractometer. The materials used are catches from bagan boats. The data is then calculated and differentiated between main catch, bycatch, and discard. The results of this research show that the composition of the main catch of boat charts is anchovies (Stolephorus spp) as much as 875 kg (24.7%) and tuna (Euthynnus affinis) 888 kg (25%). At the same time, fish that are bycatch consists of several types of fish, namely, trevally (Selaroides leptolepis) as much as 248 kg (7%), peperek (Aurigequula fasciata) as much as 710 kg (20%), mackerel (Rastrelliger sp) as much as 457 kg (12.9%), squid (Loligo sp) as much as 104 kg (2.93%), and mackerel scad (Decapterus) as much as 267 kg (7.5%), for the discarded catch, namely pufferfish (Tetraodontidae) as much as 0.25 kg (0.01 %). The discard catch consists of pufferfish
Diversity and Abundance of Gastropods in the Seagrass Ecosystem in the Teluk Bakau Village, Bintan Regency, Kepulauan Riau Province Purba, Dewi Nokiana F Br; Adriman, Adriman; Fauzi, Muhammad
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.5.3.189-194

Abstract

The diversity and abundance of gastropods are related to the condition of seagrass. In Teluk Bakau Village, anthropogenic activities such as tourism and fish catching negatively affect the seagrass ecosystem. To understand the diversity and abundance of gastropods in that area, a study was conducted in January-March 2023. Sampling was carried out at three stations: in the area close to human inhabitants (S1), ecotourism area (S2), and in the area with no human activity (S3). In each station, there were three transect lines; in each line, there were five plots (1x1 m2). Gastropod and seagrass samplings were conducted three times. Gastropods and seagrass were collected manually from each plot and then calculated and identified. Results showed eight species of gastropods and four species of seagrass. Abundance of Gastropods was 16.13 ind/m2 in S1, 11.6 ind/m2 in S2 and 50.53 ind/m2 in S3. The most abundant gastropod in the study area was Strombus canarium, which was present in each station. The seagrass density ranged from 51-113.86 plants/m2, and the most common seagrass was Enhalus acoroides, found in each station. The results of a simple linear regression test on the relationship between seagrass density and gastropod abundance was R = 0.975 (very strong)
Composition and Abundance of Marine Debris and Microplastic in the West Coast Mangrove Ecosystem of Bintan Island Anugrah, Septian; Syakti, Agung Dhamar; Suryanti, Ani
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.5.3.195-207

Abstract

Plastic waste has been identified as an environmental problem by the UN Environment Program because it causes damage to the marine environment, organisms, and critical habitats. One ecosystem vulnerable to plastic waste is mangroves, so the government continues to tackle this problem. Bintan Island has a relatively large mangrove ecosystem, and some of it is included in the vulnerable category, so it is necessary to conduct a study regarding plastic waste and microplastics on Bintan Island. The research aims to identify the abundance of macro and meso debris in the mangrove ecosystem area, the abundance and characteristics of microplastics in sediment in the mangrove ecosystem area, microplastic contamination in gastropods (Telescopium sp), the relationship between mangrove density and macro debris density, and the relationship between macro debris density and mesoderm and microplastic. The research was conducted in October 2021 in Bintan Regency and Tanjung Pinang City. Data was collected using survey methods, microplastic abundance analysis, and correlation analysis. The mass of macro debris in the Tanjungpinang City administrative area is 743 g/m2. It is dominated by plastic, with a percentage of 49%, and meso debris, 94% of the total waste, is dominated by plastic waste. The characteristics of microplastics in sediment at each sampling location consist of fibers, fragments, and films. The most common microplastic contamination in Telescopium sp in the Bintan Regency area was film-type microplastics, totaling 198.33 particles. The relationship between mangrove density and macro debris generation is very strong, with a correlation value of 0.872. The relationship between the abundance of macro debris and meso debris and microplastics was strong, with correlation values of 0.972 and 0.793, respectively
The Effect of Coral Reef Ecological Changes on the Socio-Economic Community in Mapur Village Adrinal, Adrinal; Wahyudin, Wahyudin; Lestari, Febrianti
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.5.3.208-214

Abstract

The condition of coral reefs is still good on Mapur Island, which benefits community activities such as fishing and marine tourism. However, continuous activities can degrade the coral reef ecosystem, so the government has made it a Marine Conservation Area for the Eastern Region of Bintan Island. This research aims to determine the ecological condition of coral reefs on Mapur Island, the influence of the coral reef ecosystem on socio-economics, as well as the impacts felt before it was designated and after it was designated as a conservation area in Mapur Village, Marine Conservation Area in the Eastern Region of Bintan Island. The results show that increasing live coral cover and decreasing dead coral cover have shown a positive recovery trend. Establishing a coral reef ecosystem conservation area in Mapur Village has several substantial impacts. Even though most people have good knowledge and perception about the function and benefits of conservation areas, primarily as fish habitats, the main challenge still lies in access to infrastructure, which is considered inadequate. The economic impact of establishing a conservation area is not yet significant because most people do not see a substantial increase in income. However, the community feels support for their livelihoods through the sustainability of fish resources. Changes in coral cover on the socio-economic conditions of the people of Mapur Island influence the ecosystem and local communities, fisheries and marine resources, the marine tourism sector of Mapur Village, natural resource management, direct economic influence, diversification of livelihoods, education, and environmental awareness, improving infrastructure and facilities, as well as challenges and limitations

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