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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. 2 (2024): May" : 20 Documents clear
Bivalve Abundance and Distribution in the Seaweed Ecosystem in the Waters of Jago-Jago Village, Tapanuli Tengah, North Sumatra Province Siagian, Yosua; Zulkifli, Zulkifli; 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.5.2.135-142

Abstract

This research was conducted in May 2022. This research was conducted in Jago-jago Village, Tapanuli Tengah, North Sumatra Province. The aim was to determine the abundance and distribution pattern of bivalves in the study area. The method used in this study is a survey method, namely direct observation, taking samples in the field, and then analyzing them in the laboratory. Determining observation stations and data collection using the purposive sampling method is done by considering various conditions at the research location. Sampling was carried out at three stations that were considered representative of the research area. Each station consists of 3 transects with a length of 50 m each, where each transect has three plots measuring 1x1m2. From the research results of the types of bivalves found in the coastal waters of Jago-Jago Village during the study, there were six types of families, namely Arcidae, Cardiidae, Mesodesmatidae, Ostreidae, Donacidae, and Corbiculidae. At the same time, there were as many as six species: Anadara antiquata, Trachycardium subrugosum, Atactodea sp, Crassostrea sp, Donax sp, and Polymesoda erosa. Based on the results of the ANOVA test, it was known that the abundance of bivalves in the coastal waters of Jago-Jago Village showed a significant value obtained <0.05, namely 0.016. This indicates that the difference in abundance between stations is significantly different. The average organic matter content at station 1 is 4.59%. The substrate is muddy sand with an abundance value of 4.33 ind/m2. At station 2, the organic matter content is 4.05% with sand substrate, and the abundance value is 3.11 ind/m2. The organic matter content at station 3 is a 6.39% sandy mud substrate with an abundance value of 6.11 ind/m2. The highest relative abundance of bivalves found at station 3 was Donax sp, which is 32.72%.
Marine Eco-Climatological Conditions Captured in the West Waters of North Sumatra Nababan, Bastian Vepry Odynata; Samiaji, Joko; Elizal, Elizal
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.5.2.77-80

Abstract

Fishery resources in Indonesia, especially in the waters of the Western part of North Sumatra, are closely related to the oceanographic dynamics. Knowledge is needed about the conditions of Marine Eco-Climatology in fishing areas rich in fishery resources. This research was conducted in January-April 2021 at the Sibolga Archipelago Fisheries Port, Sibolga Fisheries and Marine Resources Supervisory Post, and College of Fisheries and Marine Science in Pandan Central Tapanuli. The research method was a survey method with a simple regression statistical test. Based on the results of this study, it was slowed that the air temperature in Sibolga City from 2010-2019 ranged between 23-28⁰C and was categorized as normal. The rainfall in Sibolga City in 2010-2019 ranged from 100-600 mm per month, and the wind speed value was 6-12 knots. The effect of these parameters on the catch showed a weak status. It was known that the best time to carry out the fishing is at average temperatures of 24-27⁰C, rainfall less than 3000 m3 /day, and wind speeds of 6-8 knots
Types and Abundance of Microplastics in the Digestive Tract of Cucumbers in Banyak Island, Aceh Singkil Lianda, Desi; Suriani, Mai; Kusumawati, Ika; Lubis, Friyuanita; Dewinta, Astrid Fauzia
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.5.2.81-85

Abstract

Banyak Island is an island located in Aceh province, precisely in Aceh Singkil district. The people of Banyak Island often consume food whose packaging is made of plastic, and then it ends up in the sea. Island community waste thrown into the sea will enter and potentially pollute the marine ecosystem and the biota within it. This research aims to identify the type of composition and abundance of microplastics found in the digestive tract of sea cucumbers on Banyak Island, Aceh Singkil, in terms of the shape and abundance of microplastics. The method used in this research is a descriptive analysis method, which is based on photos taken with a microscope. Based on the research results, the species composition ranged from 50-114 particles/g, and the abundance of microplastics obtained was 0.2-11.4 particles/g. It was dominated by microplastic pellets, fibers, and films, with the pellet type being the first. Judging from the large amount of microplastic content found in the digestive tract of sea cucumbers on Banyak Island, Aceh Singkil, they can be categorized into types of sea cucumbers that are still suitable for consumption and sale, but if done continuously, can trigger the growth of if done frequently and over a long period, it will cause adverse effects for humans who consume it
Community Structure of Mangrove Vegetation in Sapat Village, Kuala Indragiri District, Indragiri Hilir Regency, Riau Province Martha, Rezky Dwi; Zulkifli, Zulkifli; Efriyeldi, Efriyeldi
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.5.2.86-93

Abstract

Mangroves are very productive wetlands and can live in areas still influenced by tides. This research was conducted in November - December 2023 in the mangrove ecosystem of Sapat Village, Kuala Indragiri District, Indragiri Hilir Regency, Riau Province. This study aimed to determine the structure of mangrove vegetation communities in Sapat Village. This study used the survey method, and three stations were used. Mangrove species found include Avicennia alba, Sonneratia alba, S.caseolaris, S.ovata, Nypa fruticans, Rhizophora apiculata, Bruguiera parviflora, B.gymnorhiza, B.sexangula, and Achantus ebracteatus. Mangrove vegetation density at station I has very dense criteria, station II medium criteria, and III has sparse criteria. From the index aspect, the mangrove vegetation community has a diversity value (H'), which is classified as moderate, with sufficient productivity, which has a value ranging from 1.33-1.68. The uniformity value (E) of stations I and II is in the moderate category, which ranges from 0.57-0.58, and station III is classified as a high category with a value of 0.73. Moreover, the value of the dominance index (C) is classified as low, ranging from 0.21-0.3 based on the significant value. The type of N.fruticans dominates because they have a more excellent value than other species seen at each station in both categories of trees, saplings, and trees.
Abundance and Diversity of Phytoplankton in Mangrove Forest Waters of Aek Horsik Village, Central Tapanuli Batubara, Lenni Wahyuni; Sinaga, Henry; Hutagalung, Desi Indriani Dameria
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.5.2.94-100

Abstract

Phytoplankton are organisms that live floating in water. Its ability to move is limited, so the organism is always carried away. The waters of mangrove forests in Tapanuli Tengah Regency are directly adjacent to the shoreline, where phytoplankton always follow the current. At high tide, phytoplankton are carried by currents to mangrove forests; at low tide, phytoplankton can be carried by currents to free ocean waters. This study aims to determine the type of phytoplankton, phytoplankton abundance, and the level of phytoplankton diversity in the Mangrove Forest Waters of Aek Horsik Village, Tapanuli Tengah Regency. This research will be conducted from May to June 2023. Phytoplankton samples were taken using the purposive sampling method, and the research station was divided into 3. Station 1 is upstream of the mangrove forest, station 2 is in the middle of the mangrove forest, and station 3 is downstream. The results of this study showed that phytoplankton found in the waters of the Mangrove Forest, Aek Horsik Village, Tapanuli Tengah Regency consisted of 5 classes totaling 15 species, namely: Class Cyanophyceae (Synedra sp), Class Euglenophyceae (Euglena viridis sp, E.protista, and Euglena sp), Class Chlorophyceae (Ankistrodesmus sp, Scenedesmus sp, Tetraedron caudatum, Closterium acutum), Class Baciliarophyceae (Navicula sp, Nitzchia sp, Tabellaria sp, Nitzchia sigma), and Class Zygnematophyceae (Cosmarium sp, Staurastrum sp, S. curvacum). The highest phytoplankton abundance was 6100 Ind/L. Phytoplankton diversity is in the medium category, with the highest value being 2.671
Identification of Water Biota in the Mangrove Forest Water Area in Aek Horsik Village, Tapanuli Tengah District Batubara, Lenni Wahyuni; Santikawati, Susi; Siburian, Sar Aloha Martupa
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.5.2.101-106

Abstract

Mangrove forests are a typical ecosystem in coastal areas that accommodate a variety of species, are breeding grounds for marine biota, and have economic value in improving community welfare. Based on the search data results, various aquatic organisms, such as Mollusca, Crustacea, and fish, use mangroves as a nursery, shelter, and breeding habitat. This research aims to identify the diversity of aquatic biota in the mangrove forest waters in Aek Horsik Village, Tapanuli Tengah Regency and was carried out from May to June 2023. This research used a survey method with a purposive sampling technique, analyzed descriptively with abundance formulas and dominance indices. The research station is divided into three stations. Station 1 is located in the upstream mangrove forest waters, station 2 is located in the middle of the mangrove forest waters, and station 3 is located downstream of the mangrove forest waters. Based on the results of research in the waters of the Aek Horsik mangrove forest, it was found that there were ten types of macrozoobenthic biota consisting of the Gastropoda class inhabited by six families, the Bivalvia class inhabited by two families and the Crustacea class inhabited by 2 Portunidae families with an abundance of 10,648 individuals and the fish biota of 8 species consisting of 8 families with abundance numbering 111 ind
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

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