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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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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: 10.31258/185-188

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.
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
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
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

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