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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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Distribution and Abundance of Blood Shells (Anadara granosa) on the Coast of Concong Luar Village Indragiri Hilir Regency Fadhil, Mohd. Isfan; Mulyadi, Aras; Tanjung, Afrizal
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

This study was conducted in September 2021, around the coastal of Concong luar village Indragiri Hilir Regency with the aim to find out the abundance, distribution, and morphometrics of blood shell (Anadara granosa). The method used survey methods, in which blood shell sampling and aquatic substrates, as well as measurements of environmental parameters, were conducted in the field and in the laboratory. Determination of sampling location by purposive sampling is based on the character of the environment in the location of the research. Based on the results of research that has been obtained an abundance value at the station 1 = 4,8 Ind/m2, station 2 = 8,7 Ind/m2, and station 3 = 3 Ind/m2. The pattern of blood shell levy in the waters of Concong Luar Village stations 1 and 2 is clustered, while station 3 is evenly distributed. Furthermore, the results of measurement of the width of the highest blood shells are 16 - 30 mm in 70 individuals, followed by size >31 mm in 43 individuals, the lowest measurement result is <15 mm in 27 individuals and the highest measurement of the length of the blood shells 16 – 30 mm of 77 ind, followed by a size >31 mm of 42 ind, and the lowest measurement result is <15 mm of 29 ind
Size and Distribution of Bivalva in the Interidal Zone in Sambungo Village, Silaut District, Pesisir Selatan Regency, West Sumatera Province Silaban, Tulus Gandra Saputra; Tanjung, Afrizal; Siregar, Yusni Ikhwan
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

This research was carried out in January 2021 in the Intertidal Zone of Sambungo Village, Silaut District, Pesisir Selatan Regency, West Sumatra Province. The purpose of this study was to determine the size variation of the bivalve, the distribution pattern of the bivalve, the effect of the type of sediment fraction on the size, and the distribution of the bivalve in the intertidal zone. The method used in this research is a survey method which is carried out by direct observation and sampling in the field. Bivalve samples obtained were identified at the Marine Biology Laboratory and Sediment Fraction Analysis was carried out at the Chemical Analysis Laboratory, Faculty of Fisheries and Marine, Universitas Riau. Based on the results of the study, the highest number of bivalves was at station 1 as many as 11 individuals. The distribution pattern of macrozoobenthos in the intertidal zone of Sambungo Village ranges from 3.86 to 5.07 with the highest morisita index value being at station 1. The highest percentage of sediment fraction is 96.53% in the lower zone and the highest organic matter content is at station 1 of the lower zone. with a total percentage of 6.65%. Based on the criteria for the morisita index at station 1, station 2, and station 3 with an Id>1 value, it can be concluded that the distribution of Bivalvia in the intertidal zone in Sambungo Village is clustered
Analysis of Coastal Line Changes in Coastal Area of the Pantai Cermin and Perbaungan Sub District, Serdang Bedagai District Ramadhan, Alif Ridho; Mubarak, Mubarak; Mulyadi, Aras
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

This research was conducted in January 2021 in the Coastal Area of ​​ Pantai Cermin and Perbaungan Districts, Serdang Bedagai Regency. The purpose of this study is to analyze shoreline changes from 1985 to 2021 and predict shoreline changes for 2040 in the Coastal Area of ​​ Pantai Cermin and Perbaungan Districts, Serdang Bedagai Regency. The method used is the survey method. The analysis was carried out using the Digital Shoreline Analysis System (DSAS) The results showed that the Coastal Area of Pantai Cermin and Perbaungan District, Serdang Bedagai Regency had experienced 89.62% abrasion and 10.38% accretion. With this, it can be seen that the Coastal Areas of Pantai Cermin and Perbaungan Subdistricts have mostly experienced an abrasion. Oceanographic factors in the waters of the Malacca Strait, such as currents and waves, the existence of poor mangrove forests, sloping water topography, and human activities in every part of the research area. Prediction results of shoreline changes in 2040 the abrasion are 319.1 m, while the accretion is 239.7 m.
Phytoplankton Community Structure in Carocok Tarusan Beach Pesisir Selatan Regency West Sumatra Province Adrizal, Taufik; Siregar, Sofyan Husein; Nurrachmi, Irvina
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 existence of phytoplankton in the aquatic environment greatly affects aquatic life itsself. Through photosynthesis, phytoplankton is responsible for producing oxygen and nutrients, especially for other marine organisms. Furthermore, phytoplankton can be indicators of fertility and the quality of an aquatic ecosystem. The waters of Carocok Tarusan beach have congested anthropogenic activities, like shipyard and shipping, tourism, and domestic activities. This of course greatly affects the existence of phytoplankton which is very dependent on environmental conditions. This study aims to determine the structure of the phytoplankton community and its relation to the characteristics along with the quality of the waters in Carocok Tarusan beach. Phytoplankton samples were collected by using plankton net number 25 at three stations that have been determined by the purposive sampling method. The results showed that the temperature values ranged from 29.3-29.7ºC, salinity 27.7-31.3‰, brightness 1.8-3 m, pH 7, 0.3-0.6 m/s. There are 12 species from 3 classes found. The most common species found were Navicula sp, Synedra ulna sp., and Isthmia sp. The average abundance of phytoplankton at each station is 57.86-92.58 Ind/L. The results of the ANOVA test on the abundance of phytoplankton showed a significant value of 0.108, which means the P value> 0.05, this indicates that there is no significant difference in the abundance of phytoplankton between stations. The value of the species diversity index (H') of phytoplankton has an average value of 1.7436 - 2.0028. The Uniformity Index (E) has an average value ranging from 0.1393 to 0.1464. Meanwhile, the phytoplankton dominance index shows an average value of 0.2661 – 0.3191
Analysis of Lead and Copper Concentrations in Mangrove Clams (Geloina erosa) and Sediments in The North Coast of Bengkalis Island Gunova, M Taufik; Amin, Bintal; Nursyirwani, Nursyirwani
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

This research was conducted in February-April 2021 by taking samples of mangrove clams (Geloina erosa) and sediment from Selat Baru and Teluk Pambang coastal area in Bantan District, Bengkalis Regency, Riau Province. The purpose of this study was to determine the concentration of heavy metals, namely Pb and Cu, in sediment and mangrove clams that are abundant in the studied area. The research method used is the survey method and samples were taken by means of the purposive sampling technique. Heavy metal concentrations were analyzed by using Atomic Absorption Spectrophotometer (AAS). The results showed that the concentrations of Pb and Cu in the mangrove clams and sediments in the studied area had not yet passed the threshold level. Pb and Cu concentrations found on clams were 0.0468 μg/g and 0.1043 μg/g respectively. Meanwhile, the concentration of Pb in the sediment was 0.10185 μg/g and Cu 0.3313 μg/g. Mangrove clams in the north coast of Bengkalis Island have the ability to accumulate Pb and Cu with a low ability (BCF<1). The maximum Tolerable Intake of the clams for humans with a bodyweight of 70 kg is 0.0983 kg/week (Lead) and 7.3010 kg/week for Copper
Abundance of Phytoplankton and Primary Productivity Levels in the Waters of Kasiak Island West Sumatera Province Silaban, Santi Maria; Thamrin, Thamrin; Siregar, Sofyan Husein
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

This study was conducted in June 2021. Data collection of phytoplankton abundance and primary productivity was carried out in the waters of Kasiak Island of West Sumatra Province. The aim of the study was to analyze phytoplankton abundance, primary productivity vertically, and the effect of phytoplankton abundance on primary productivity in the waters of Kasiak Island. Based on the results of this study obtained that the abundance of phytoplankton on the surface (0 m) ranges from 41.67-187.50 ind/L. The abundance of phytoplankton in the depth of 5 ranges from 20.83-104.17 ind/L. While the primary productivity level of the results of the measurement of dissolved oxygen of the surface (0 meters) is obtained ranging from 7.6-11.2 mg/L while at a depth (5 m) range from 8-10.4 mg/L. Based on simple linear regression analysis on the surface (0) obtained the equation Y = 42.26x + 0.48x. The value of r2 = 0.2031 while the correlation coefficient value (r) is 0.4507. Based on the results of a simple linear regression analysis it is stated that the increasing abundance of phytoplankton the primary productivity level of the waters increases. As for the depth of 5 meters the equation Y = 46.45x + 0.07x. The value of r2 = 0.0183 while the correlation coefficient value (r) is 0.1335. Based on linear regression obtained a negative correlation means that reducing the abundance of phytoplankton will reduce the productivity of the waters
Diversity and Distribution of Gastropode (Molusca) in the Mangrove Ecosystem of Apar Village, Pariaman City, West Sumatera Province Desmarina, Yuyun; Zulkifli, Zulkifli; Nasution, Syafruddin
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

This research was conducted in August 2021 in Apar Village, Pariaman City, West Sumatra Province. This study aims to determine the diversity and distribution pattern of gastropods in the mangrove ecosystem of Apar Village, Pariaman City. The method used in this research is a survey method. A sampling of gastropods was carried out by purposive sampling method and sediment sampling was carried out using a 10 cm paralon pipe with a depth of 10 cm. The results showed that the diversity of gastropods in the waters of Apar Village was included in the low category. The highest density of gastropods was Faunus ater which was found at each station, while the lowest density was Ellobium aurisjudae and Latirolagena smaragdulus which were only found on the coast of Apar Village, Pariaman City. The overall distribution pattern of gastropods at each station was evenly distributed and gastropods in the study area were in the high category. Based on the analysis of sediment organic matter in Apar Village, the highest average value was 29.43% and the lowest was 6.51%. The results of the analysis of the sediment fraction at each station of the sediment type were muddy sand
Antibacterial Activity of Avicennia alba Leaves and Stem Extracts Against Pathogenic Bacteria (Pseudomonas aeruginosa, Aeromonas salmonicida, Staphylococcus aureus) Purba, Paedo Yayaki; Yoswaty, Dessy; Nursyirwani, Nursyirwani
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

This research was conducted in November 2020-February 2021 at the Laboratory of Fish Quarantine and Quality Control (BKIPM) Pekanbaru, Riau. The aim of this research was to test the activity of A. alba mangrove leaf extracts and stems in inhibiting the growth of pathogenic bacteria P.aeruginosa, A.salmonicida, and S.aureus. The research method used in this study is the experimental method. The sampling was conducted at the location of Marine Station UNRI Purnama Dumai. The results showed that A. alba leaf extract has the highest inhibitory power at a concentration of 100% with an average of 4.37–5.13 mm. The highest inhibitory power was against S.aureus (5.13 mm) and the lowest inhibition power was found in A. salmonicida (4.37 mm). The lowest inhibition was found at a concentration of 12.5% with an average of 0.45–0.67 mm. The stem extract of A. alba had the highest inhibitory power at a concentration of 100% with an average of 6.17–7.47 mm. The highest inhibition power was against S. aureus 7.47 mm and the lowest inhibition power was found in A.salmonicida (6.17 mm). The lowest inhibitory was at a concentration of 12.5% with an average of 1.52–2.29 mm. Based on the criteria for the strength of antibacterial activity of stem extract A. alba was in the medium category and the leaf extract was in the weak category
The Relationship Between Ammonia Levels and the Abundance of Phytoplankton in the morning and evening in Ujung Piring Bangkalan Estuary Syarifah, Wasiqatus; Zainuri, Muhammad; Indriyawati, Novi
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 density of community activities around the Ujing Piring Bangkalan estuary has the potential to produce waste containing ammonia which is very dangerous for the environment and causes a decrease in water quality and threatens the existence of aquatic organisms including phytoplankton. The purpose of this study was to determine the relationship between ammonia levels and the abundance of phytoplankton in the morning and evening in the Ujung Piring Bangkalan estuary. The sampling time was carried out in the morning (08.00-09.30 WIB) and afternoon (15.00-16.30 WIB) three times in three weeks using 10 micron plankton nets in the Ujung Piring Bangkalan estuary waters. The sampling method used a purposive sampling method with phytoplankton analysis using the census method and continued with statistical tests using the linear regression method. The relationship between ammonia levels and phytoplankton abundance in the morning and evening were 0.1537 with a percentage of 15% and 0.0593 with a percentage of 0.05%, respectively. This value states that ammonia levels have a negative correlation with the abundance of phytoplankton in the morning and evening in the Ujung Piring Bangkalan estuary
Prevalence Analysis of Hypodermal Infectious and Haematopoetic Necrosis Virus (IHHNV) in Vaname Shrimp (Litopenaeus vannamei) in Bengkalis District Fahmi, Adzra Ariesta; Feliatra, Feli; Eff, Irwan; Muhson, Nanang
Journal of Coastal and Ocean Sciences Vol. 3 No. 3 (2022): 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 disease is a limiting factor and causes economic losses in the cultivation of white shrimp (Litopenaeus vannamei). Diseases in vaname shrimp are caused by viruses, microbes, parasites, organisms, and natural conditions. One of these diseases is infectious hypodermal and hematopoietic necrosis (IHHNV). This study was conducted from February to April 2022. This study aimed to analyze the prevalence of IHHNV that attacks white shrimp in the Bengkalis Regency and to observe and observe clinical symptoms in whitewashed shrimp infected with IHHNV in the pond area of the Bengkalis Regency. The research method used in this study is a survey method. The primary data taken included water quality observations, morphological observations, sampling, and detection of IHHNV using the polymerase chain reaction (PCR) method. The results showed that the prevalence of IHHNV in white shrimp was 0%. PCR testing using a specific primer measuring 392bp showed that white shrimp samples from three locations in Bengkalis District, namely Bengkalis District, Bukit Batu District, and Rupat District, were negative for IHHNV and did not show any clinical symptoms of IHHNV on morphological examination

Page 6 of 30 | Total Record : 293

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