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Gedung Marine Center (Lt 2) Jurusan Ilmu Kelautan, Universitas Riau Kampus Bina Widya, Jl. HR. Soebrantas Km. 12,5 Panam, Pekanbaru, Indonesia-28293
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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 293 Documents
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Habitat Characteristics Nesting Environment of Green Turtle (Chelonia mydas) Pandan Island of West Sumatera Vani Oktavia Siahaan; Thamrin Thamrin; Afrizal Tanjung
Journal of Coastal and Ocean Sciences Vol. 1 No. 1 (2020): September
Publisher : Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.1.1.1-6

Abstract

This research was conducted in February until March 2017 at Pandan Island island pandan area tourist Park Pieh Island. The purpose of this study was to investigate the characteristics of the nesting habitat of the hawksbill turtle (Chelonia mydas). The method used in this research is the survey method, with measuring directly on the habitat of hawksbill turtle covering the slope of the beach, texture of sediments, within the nest of tides, the temperature of the nest, fecundity, and the type of vegetation and predators in the nesting habitat. The results showed that the nesting habitat characteristics vary between nest with each other. Nesting beach ramps ranged 2,75-4,60º with medium sand sediment texture to coarse sand. Temperatures nest ranging between 27-31ºC. The dominant vegetation in the area is a nesting plant pandan laut (Pandanus tectorius) whereas the dominant predator was biawak (Varanus salvator).
Habitat Characteristics Nesting Environment of Green Turtle (Chelonia mydas) Pandan Island of West Sumatera Siahaan, Vani Oktavia; Thamrin, Thamrin; Tanjung, Afrizal
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

This research was conducted in February until March 2017 at Pandan Island island pandan area tourist Park Pieh Island. The purpose of this study was to investigate the characteristics of the nesting habitat of the hawksbill turtle (Chelonia mydas). The method used in this research is the survey method, with measuring directly on the habitat of hawksbill turtle covering the slope of the beach, texture of sediments, within the nest of tides, the temperature of the nest, fecundity, and the type of vegetation and predators in the nesting habitat. The results showed that the nesting habitat characteristics vary between nest with each other. Nesting beach ramps ranged 2,75-4,60º with medium sand sediment texture to coarse sand. Temperatures nest ranging between 27-31ºC. The dominant vegetation in the area is a nesting plant pandan laut (Pandanus tectorius) whereas the dominant predator was biawak (Varanus salvator).
Diversity and Mollusca Distribution Patterns (Gastropoda and Bivalvia) In the North of Poncan Gadang Island, Sibolga City North Sumatera Province Royan Saputra; Zulkifli Zulkifli; Syafruddin Nasution
Journal of Coastal and Ocean Sciences Vol. 1 No. 1 (2020): September
Publisher : Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.1.1.16-24

Abstract

This research was conducted in July-August 2019 in the northern part of the Poncan Gadang Island Sibolga, North Sumatra Province. This study discusses the distribution and distribution patterns of molluscs (gastropods and bivalves) which contain species, density, and species discussed in the northern part of Poncan Gadang Island, North Sumatra Province. The method used is a survey method, where the research location is divided into 5 observation stations and each station consists of 1 transect and each transect consists of 4 maps. The results showed that the type of gastropods found in the study site consisted of 11 species belonging to 6 families. Gastropod species that are commonly found are Littorina littorea. While the type of bivalves that were found at the study site consisted of 9 species belonging to 6 families, and the bivalves species that were found were Anadara granosa. Highest density at station III in the river mouth. Various index (H ') of gastropods and bivalves in all research stations are included in the medium category. Distribution Patterns both gastropods and bivalves are distributed in groups. The index value of approved gastropod and bivalve types (Ss) can be requested types which are found to be quite the same. The substrate at the study site was approved by the sand substrate. The density of both gastropods and bivalves were not significantly different between stations.
Distribution of Microplastic at Sediments in the Coast of Bungus Bay Padang West Sumatera Province Islami, Muhammad Dinul; Elizal; Siregar, Yusni Ikhwan
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

This research was carried out in July to August 2019. It aimed to learn the shape and the abundance of microplastics in the coastal area of Bungus Bay, West Sumatra Province. Survey method was applied and PVC pipe was used to collect sediment samples from three different stations with three sampling points on each station. The results showed that the abundance of microplastics were significantly different between stations, except at different sediment depths and tidal zones (it ranged from 191.11 - 301.11; 221.48 - 236.30; and 226.67 - 231.11 particles per kg of dry sediments consecutively). In addition, the microplastic with fiber type was higher than the two other types, such as films and fragments
Diversity and Mollusca Distribution Patterns (Gastropoda and Bivalvia) In the North of Poncan Gadang Island, Sibolga City North Sumatera Province Saputra, Royan; Zulkifli, Zulkifli; Nasution, Syafruddin
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

This research was conducted in July-August 2019 in the northern part of the Poncan Gadang Island Sibolga, North Sumatra Province. This study discusses the distribution and distribution patterns of molluscs (gastropods and bivalves) which contain species, density, and species discussed in the northern part of Poncan Gadang Island, North Sumatra Province. The method used is a survey method, where the research location is divided into 5 observation stations and each station consists of 1 transect and each transect consists of 4 maps. The results showed that the type of gastropods found in the study site consisted of 11 species belonging to 6 families. Gastropod species that are commonly found are Littorina littorea. While the type of bivalves that were found at the study site consisted of 9 species belonging to 6 families, and the bivalves species that were found were Anadara granosa. Highest density at station III in the river mouth. Various index (H ') of gastropods and bivalves in all research stations are included in the medium category. Distribution Patterns both gastropods and bivalves are distributed in groups. The index value of approved gastropod and bivalve types (Ss) can be requested types which are found to be quite the same. The substrate at the study site was approved by the sand substrate. The density of both gastropods and bivalves were not significantly different between stations
Structure Community and Distribution of Benthic Foraminifera in the Waters of Bagan Tanjungbalai Village Asahan Regency North Sumatera Province Pohan, Rizal Suardiman; Rifardi, Rifardi; Efriyeldi, Efriyeldi
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

This research was conducted in March 2019 in the waters of Bagan Tanjungbalai Village Asahan Regency North Sumatera Province. The purpose of the study were to analyze the community  structure and distribution of benthic foraminifera. Determination of the research was purposive sampling of 4 station with 3 sampling points where the distance each sampling point was 50 meters wich were based on the initial sampling point. In the study area were found 24 species of foraminifera.  The study showed that composition of sediment organic matter involved 4.97 - 15.26%, while the abundance of benthic foraminifera was between 13690 - 28571 ind/m2. Defferences of the abundance of benthic foraminifera at each station obtained a significant value of 0.01 or p < 0.05, which means a difference the abundance of  benthic foraminifera beetwen stations,but not significant. While the relative abundance between sampling is only 0.15-21.00%, while the relative sedimentation rate between sampling is 15.38 - 33.02%. 
Growth of Bacteria Bacillus cereus in Liquid Media with Different Protein Sources Mukti, Pranata Rangga; 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

The aim of this research was to determine the optimal media composition and incubation time for the growth of Bacillus cereus and B. cereus isolate consortium with other strains isolate. Using an experimental method, which was testing 2 groups of bacterial isolates; B. cereus strain SN7 (isolate N) and bacterial consortium (combination of 5 isolates of B. cereus with different strains). Each group of isolates was grown in sago waste media added with two different protein sources (egg whites and skim milk) and 3 different concentrations in each protein source (8%, 10%, and 12%) with 3 replications in each treatment. Bacterial culture was measured every 6 hours for 24 hours using three methods; total agar plate count, spectrophotometric methods, and bacterial cell biomass methods. There was no significant difference between the growth of these two groups of bacterial isolates. Optimal growth of each isolate was in the sago waste media which was added with egg white but with different concentrations, namely 10% in B. cereus SN7 and 12% in the consortium. B. cereus consortium showed higher growth than B. cereus SN7. The optimal time for bacteria to grow was in the range of 12 to 24 hours
The Diversity and Abundance of Planktonic Diatoms Vertically in Nareh Coastal Waters Manggung Village North Pariaman Sub-District Pariaman City West Sumatera Province Yulia Prasiska; Thamrin Thamrin; Sofyan Husein Siregar
Journal of Coastal and Ocean Sciences Vol. 1 No. 1 (2020): September
Publisher : Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.1.1.60-67

Abstract

This research was conducted in March 2020 to find out the difference in planktonic diatoms abundance vertically at each station in the waters of Nareh Beach, Manggung Village, North Pariaman Sub-District, Pariaman City, West Sumatra Province. The method used is a survey method that consists of three depths at three observation stations. The water quality measured in this study were temperature, brightness, pH, salinity, current velocity, and depth. Based on the research results, there are 11 types of planktonic diatoms found in the waters of Nareh Beach, namely Gyrosigma sp., Chaetoceros sp., Odontella sp., Rhizosolenia sp., Pleurosigma sp., Thalassionema sp., Leptocylindrica sp., Coscinodiscus sp., Nitzschia sp., Guinardia sp, and Skeletonema sp. the most dominant one. The highest total value of planktonic diatom abundance ranges (9779.65-12867.96 ind/L) is found in the surface layer and the lowest ranges (2573.59-10294.37 ind/L) is at 5 m depth. There is no difference in the total value of planktonic diatom abundance between depths
Comparison of Carbon Reserves in Mangrove Sonneratia Alba and Nypa Fruticans in Pangkalan Jambi Village, Bengkalis District Riau Province Isnaini, Siti; Amin, Bintal; Efriyeldi, Efriyeldi
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

This study was conducted in January – February 2020, which was located in Pangkalan Jambi Village, Bukit Batu District, Bengkalis Regency, Riau Province. The purpose of this study was to determine the potential amount of carbon stored in mangrove vegetation area of mangrove forests. The survey method was applied in this study and carbon stock analysis was carried out in the Marine Chemistry Laboratory, Faculty of Fisheries and Marine, University of Riau. Biomass and carbon stocks in N. fruticans is higher compared to S. alba. Based on the mangrove density, the average total biomass of S. alba and N. fruticans were 0,74 tons/ha and 11,65 tons/ha whilst.  Their carbon reserves were 0,35  tons/ha and 5,47 ton/ha, respectively. Potential carbon uptake of N. fruticans and S. alba were 20,07 tons/ha and 1,23 tons/ha, respectively. The potential N. fruticans in the village of Pangkalan Jambi is capable of absorbing 16 times large, compared to S. alba
Analysis of  Carbon Stock in Seagrass Enhalus acoroides in Benan Island, Lingga Regency Zulfahmi, Sayid; Siregar, Yusni Ikhwan; Zulkifli, Zulkifli
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

This research was conducted in Benan Island, Katang Bidara Subdistrict, Lingga Regency, Riau Islands Province in February 2020. This study aimed to determine the value of density, biomass and carbon stock in seagrass E. acoroides. The method used in this study is a survey method, where the data collected is considered to represent the waters of Benan Island. The density of seagrass E.acoroides in the study location ranged from 22.67 to 31.22 individuals/m2. E.acoroides seagrass is divided into two parts, namely the top of the substrate or above ground biomass (Agb) and the bottom of the substrate or bellows biomass (Bgb). The average value of biomass seagrass ranged from 1,113.27-4,412.24 g/m2. The highest carbon stock was in the rhizoma section at Station I (2,134.46 gC/m2) and the lowest was in the leaf section at Station II (363.08 gC/ m2). Biomass and carbon stock in the Bgb section is higher than the Agb portion

Page 1 of 30 | Total Record : 293

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