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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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Growth of Bacteria Bacillus cereus in Liquid Mediums with Different Carbohydrate Sources Ningsih, Irma Ardila; Feliatra, Feli; Effendi, Irwan
Journal of Coastal and Ocean Sciences Vol. 1 No. 1 (2020): 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/

Abstract

Bacteria need a medium to grow Bacillus cereus is a probiotic bacterium. Molasses and tofu liquid waste are one of the wastes that are used as alternative medium, because they are easy to obtain, cheap, and contain nutrients that are high enough in the form of carbohydrates. This study aimed to determine the optimal medium for the growth of these bacteria. This study used a completely randomized factorial design. It consists of three factors, namely the type of waste (molasses + egg albumen and tofu liquid waste + egg albumen), then the combination of isolates (B. cereus SN7 and consortium), and the concentration of liquid waste used for medium growth is (molasses is 1%; 1.5% ; and 2% while tofu liquid waste is 8%; 10%; and 12%). Bacterial cell growth was measured by the Total Plate Count (TPC) method, spectrophotometric method, and biomass, while the incubation period for cell growth was measured every 0, 6, 12, 18, and 24 hours. The results of this study indicated that molasses + egg albumen with a concentration of 1% was the best medium for the growth of B. cereus bacteria along with consortium isolates
Cultivation of Seagrapes (Caulerpa lentillifera) in Controlled Containers with the Addition of Different Doses of Fertilizers Astuti, Nur Anggraeni; Cokrowati, Nunik; Mukhlis, Alis
Journal of Coastal and Ocean Sciences Vol. 2 No. 1 (2021): January
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/

Abstract

Caulerpa sp. is a type of seaweed from the Chlorophyceae class. Caulerpa sp. consumed as vegetables and fresh vegetables in tropical Pacific regions, especially in the Philippines and Indonesia. Caulerpa sp. contains nutrients including protein, carbohydrates, water content, crude fibre content and antioxidants. Caulerpa sp. potential as food, cosmetics and drugs. This study aims to analyze the effect of NPK fertilizer addition on Caulerpa sp. cultivation in controlled media and to analyze the best dosage. The research method used was an experimental method with a completely randomized design (CRD). The treatment tested was the concentration of fertilizer using different fertilizer concentrations, namely treatment 1 was the concentration of NPK 0 mg / L (control), treatment 2 was the concentration of NPK 20 mg / L, treatment 3 was the concentration of NPK 40 mg / L and treatment 4 was the concentration NPK 60 mg / L. The results of this study are the absolute growth rate of treatment A of -64 g, B of -71.75 g, C of -63.75 g and D of -66.5 g. The specific growth for treatment A is -3.07 %, treatment B is -3.71 %, treatment C is -3.02 % while treatment D is -3.39 %. The antioxidant content of treatment A with a value of 33.72%, treatment B with a value of 38.69%, treatment C with a value of 32.51%, treatment D with a value of 35.15%. The conclusion of this study is the addition of NPK fertilizer in this study affects the growth of Caulerpa lentillifera, by giving the effect of reducing growth
Analysis of Inundation area as an Impact of Sea Level Rise in Kota Pariaman District, West Sumatera Province Putri, Elsa Eka; Galib, Musrifin; Mubarak, Mubarak
Journal of Coastal and Ocean Sciences Vol. 2 No. 3 (2021): 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/

Abstract

This research has conducted on February 2021 in Kota Pariaman District, Sumatera Barat Province. The intention of this research was to found out the sea level rise rate based on tidal data analysis from 2001-2020 and to predict the inundation area in the 20th, 50th, and 80th to go. The method of this research was a descriptive survey by using remote sensing as the additional equipment to demonstrate the outcome. The acquisition needs are primary (land use and tidal data) and secondary (slope, elevation, land use, and tidal data) data. Those parameters were processed and analyzed to describe the area of inundation by displaying a map of Kota Pariaman. Kota Pariaman territorial water has 0,44 of Formzhal number which means the waters area is classified to mixed semidiurnal tides with the sea level rise value reach out to 2,006 cm/year. Then, the number used to predict the height of sea-level rise in 20th, 50th, and 80th to go, for each is 0,471 m; 1,073 m; and 1,675m. Furthermore, the sea level rise height was analyzed to get the inundation area in 20th, 50th, and 80th to go, turns out the flooded area for each year respectively to 14,56 ha; 23,61 ha, and 38,16 ha
Fishing Range Based on Spreads of Chlorophyill-a in Rupat Strait using Aqua-Modis Satellite Image Sitorus, Gideon Dody Tama; Rifardi, Rifardi; Mubarak, Mubarak
Journal of Coastal and Ocean Sciences Vol. 3 No. 1 (2022): January
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/

Abstract

The study aims to know the area of fishing in the waters of the Strait based on a flat-out chlorophyill-a satellite image of AQUA-Modis. Data analysis uses Seadas 7.5.1 and Surfer 13. In this study the method used was the survey method. Ground checks are done aimed at directly knowing the water quality parameters. And also there is a documented documentary on the waters. Parameters measured in this study are those of the quality of the water covering: brightness, temperature, the velocity of the current, acidity (pH) and salinity. The measured parameters for the quality of water in the Dumai Waters were carried out at 3 stations that are thought to represent the parameters of the waters in Dumai. The result of the measured parameters for the quality of the Dumai Waters is known that for the value of the brightness of the Dumai waters is between 7.5 to 16 cm, the water temperature is between 28-29oC, the degree of acidity (pH) of water ranges between 6-7 and the salinity of the water is 26-32 0/00.The chlorophyill-a concentration in the Dumai waters based on analysis of the AQUA-Modis satellite image ranging from 4.001 to 11200 mg/m3. The level of fishing area in the Dumai Waters is 75%.
Mangrove Vegetation Community Structure in Sungai Sembilan Sub-District, Dumai City Hasyim, Ardhan Fadhlani; Mulyadi, Aras; Efriyeldi, Efriyeldi
Journal of Coastal and Ocean Sciences Vol. 3 No. 1 (2022): January
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/

Abstract

Mangroves are one of the important ecosystems in coastal areas that grow in places that are still influenced by tides. This research was conducted from October to November 2019 in the mangrove ecosystem of Sungai Sembilan District, Dumai City, Riau Province. The purpose of this study was to determine the structure of mangrove vegetation in Sungai Sembilan District, Dumai City. The method used in this study was a survey method, and used 4 stations. The mangrove species obtained were Avicennia alba, Avicennia mariana, Rhizophora apiculata, R. mucronata, Sonneratia alba, Xylocarpus granatum and Nypa fruticans. The density of mangrove vegetation at stations I, II, and III has criteria 1000 to < 1500 Trees/Ha, while at station IV the criteria are damaged with tree density criteria < 1000 Trees/Ha. From the aspect of the index, the mangrove community has a diversity value (H') which is classified as moderate with sufficient productivity which has a value ranging from 1.70 to 2.36, the value of uniformity (E) is classified as uneven, which is around 0.25 to 0.34 and the index value is dominance (C) which is relatively low, ranging from 0.12 to 0.33 which means that there is no dominant species in the area. Based on the significance value, the vegetation type R. apiculata dominated by having a greater significance value than the other species as a whole at each station in the tree, sapling and seedling categories
Structure of the Mangrove Community in Batang Masang Beach Tiku V Jorong Tanjung Mutiara District Agam Regency West Sumatera Syarif, Wilman; Nasution, Syafruddin; Mubarak, Mubarak
Journal of Coastal and Ocean Sciences Vol. 3 No. 2 (2022): 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/

Abstract

The survey was conducted in March 2021. The purpose of this survey was to analyze the structure of the mangrove community at Batang Masang Beach Nagari Tiku V Jorong Tanjung Mutiara District Agam Regency West Sumatra. The method used in this study is a survey method. In the mangrove area of ​​Batang Masang, 3 observation stations have been determined. Each observation station was drawn by 3 transects over 50 m drawn from the mangrove boundary of the sea to the land. In each transect, 3 plots were placed, each plot consisting of 3 sizes, namely 10 x 10 m for the tree category, 5 x 5 m for the sapling category, and 2 x 2 m for the seedling category. The results of the survey revealed that there were 2 classes, namely the Magnoliopsida class and the Liliopsida class. In the magnoliopsida class, there are 3 genera namely Acanthus, Rhizophora, and Sonneratia, and there are 3 species namely A. ilicifolius, R. apiculata, and S. alba. In the class Liliopsida there is only 1 genus, namely Nypa, and 1 species N. fruticans. Zone I is dominated by S. alba species, in zone II there are 2 dominant species, namely S. alba and R. Apiculata, and zone III is dominated by R.apiculata species. The criteria for mangrove vegetation are in the scarce criteria with densities ranging from 277.78 to 1066.67 ind/ha
Productivity and Financial Analysis of Fishing Effort with Handline at Kutaraja Ocean Fishing Port Aceh Province Manalu, Angga Setia; Zain, Jonny; Brown, Arthur
Journal of Coastal and Ocean Sciences Vol. 4 No. 1 (2023): January
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/

Abstract

Production of catches on hand line-fishing gear at Kutaraja Ocean Fishing Port has decreased, this is clearly seen from the level of fish production produced, which was 2.407.580 tons in 2018 compared to production in 2019, which was 2,285,750 tons. The fishing business, which has become one of the livelihoods of the Indonesian people, is a little riskier compared to other businesses because the fish which are the main target of this business is always moving dynamically. The research objectives were to determine productivity per GT, Trip, and ABK on hand line-fishing gear and to determine the financial feasibility analysis of fishing effort on hand line-fishing gear at Kutaraja Ocean Fishing Port. The benefits of this research are to increase knowledge and insight regarding productivity and financial analysis of the fishing line effort. The method used in this study is a survey method. The data analysis method used in this research is a descriptive analysis method. The results showed that the value of productivity per trip with large-size ships has a high amount of production compared to smaller ship sizes. This is because a larger ship has a carrying capacity or more carrying capacity. Hand line fishing with a vessel size > 30 GT has a relatively long payback period, i.e. < 5 years. While ships with a size of 5 GT. 6 GTs. 9 GTs. 22 GTs. and 24 GT have a payback period of < 3 years. This is because a larger ship has a carrying capacity or more carrying capacity. Hand line fishing with a vessel size > 30 GT has a relatively long payback period, i.e. < 5 years. While ships with a size of 5 GT. 6 GTs. 9 GTs. 22 GTs. and 24 GT have a payback period of < 3 years. This is because a larger ship has a carrying capacity or more carrying capacity. Hand line fishing with a vessel size > 30 GT has a relatively long payback period, i.e. < 5 years. While ships with a size of 5 GT. 6 GTs. 9 GTs. 22 GTs. and 24 GT have a payback period of < 3 years
Identification of Belat Bycatch in Anak Setatah Village Rangsang Barat District Meranti Island Regency Riau Province Sembiring, Firma Surmana; Brown, Arthur; Yani, Alit Hindri
Journal of Coastal and Ocean Sciences Vol. 4 No. 2 (2023): 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/

Abstract

The belat is a passive fishing gear that belongs to a group of traps operated in areas around the coast. In its operation, the belat not only produces the main catch but also gets bycatch. This study aims to identify the main catch and by catch. The research method used is the survey method by making direct observations of the belat catch and then the catch is identified as the type of fish, the number of individuals, and the weight of the fish. The results of descriptive analysis showed that the main catches were two types of shrimp, namely white shrimp (Penaeus indicus) and striped shrimp (Penaeus monodon) with a weight of 30400 g. The main catches were white shrimp (Penaeus indicus) and striped shrimp (Penaeus monodon). The by-catches were small fish and young fish, the by-catches consisted of 6 species with a total weight of 29300 g
Study of the Environmental Friendliness and Financial Belat in the Waters of Siak River Benayah Village Siak Regency Riau Province Setiawan, Arief; Bustari, Bustari; Brown, Arthur
Journal of Coastal and Ocean Sciences Vol. 4 No. 2 (2023): 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/

Abstract

The waters of the Siak River in Benayah Village have several fishing gears used in fishing activities. One of the fishing gears used is belat. The belat is a type of trap and is included in the classification of other trapping devices (other traps). The purpose of this study was to determine the construction of fishing gear in general, fishing operations, and the level of environmental friendliness and the feasibility of the belat fishing business. This research was carried out in December 2022 in the waters of the Siak River. The method used in this research is the survey method. The results of the FAO withdrawal study (1995) showed that the belat in Benayah Village was classified as a very environmentally friendly fishing technology. The results of the analysis of the business of fishing for belat known (NPV) with a prediction of 10 years show that the business of catching maggots achieves a return of capital in the 1st year of IDR 1,995,283
Mangrove Community Structure on the North Coast of Bengkalis Island, Riau Province Rahman, Muhammad Aulia; Efriyeldi, Efriyeldi; Nasution, Syafruddin
Journal of Coastal and Ocean Sciences Vol. 4 No. 3 (2023): 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/

Abstract

This research was conducted in April 2022 on the North Coast of Bengkalis Island, Riau Province. The purpose of this study was to determine the structure of the mangrove community on the North Coast of Bengkalis Island, Riau Province. The method used in this study is a survey method, through direct observation in the field (in situ). Determination of research stations was carried out by purposive sampling method, the research location was divided into 3 stations then the stations were divided into 3 transects and 3 plots were placed on each transect. The results showed that the mangrove species found consisted of 8 species. The highest density of mangroves in the tree category was at station I, namely 1,767 ind/ha, the highest density of mangroves in the sapling category was at station I, namely 3,645 ind/ha. The species with the highest density, both from the category of trees and saplings, is R. apiculata. The diversity index belongs to the medium category (H' = 1.49 - 1.69) which means that the mangrove community is experiencing significant pressure (disorder). The uniformity index value obtained is in the high category (E = 0.89 - 0.90) where the distribution of species in these waters is in a balanced state. The dominance index value (C = 0.18 - 0.26) indicates that there are no species that dominate in these waters

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