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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. 4 No. 2 (2023): May" : 20 Documents clear
Bivalve Community Structure in Coastal Water of Lalang Village, Siak District Riau Province Ritonga, Rifai Ramadhan; Zulkifli, Zulkifli; Nasution, Syafruddin
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

This research was conducted in July - September 2022 in the coastal waters of Lalang Village, Sungai Apit District. The purpose of this study was to determine the structure of the bivalve community including abundance, relative abundance, diversity, uniformity index, dominance index, and distribution pattern. Sampling was done using the line transect method at 3 stations. The results of the study obtained two species of bivalves in the waters of Lalang Village Beach, namely Polymesoda erosa and Glauconome virens with abundance at all stations ranging from 1.67 - 5.33 ind/m2. The bivalve diversity index value at the study site is categorized as low diversity. The bivalve uniformity index value is high, and the dominance index value indicates the presence of dominating species. The distribution pattern of bivalves between observation stations is clustered
Productivity of Yellow fin Tuna (Thunnus albacares) catches on Hand line Vessels before the Continuation of the Covid-19 Pandemic in PPS Bungus West Sumatra Province Sitepu, Egi Dwi Putra; Isnaniah, Isnaniah; Bustari, Bustari
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

Hand line is the simplest type of fishing gear. It consists of a fishing rod, fishing line, and weight or bait. The Coronavirus outbreak has had an impact on capture fisheries marketing, where fish prices have decreased by up to 50%. The purpose of this study is to determine whether there is an effect of the Covid 19 pandemic on the number of yellow fin tuna (Thunnus albacares) catches on hand line vessels at PPS Bungus, West Sumatra Province. Productivity of hand line trip and per crew in 2019 has the highest results and there is always a decrease in 2020, productivity per trip and crew in 2020 has decreased from 2019, again there is an increase in productivity results from 2020 - 2021 although not significant. The decline in average productivity from 2019 - 2021 is the impact of the Covid 19 Pandemic, and the factors for the decline in catch productivity are the fishing season, bad weather so that the water conditions are murky (brown) which makes it difficult to catch
Sustainability Status of Gillnet Fisheries Based on Ecological, Social, and Economic Dimensions in the Riau Province Fisheries Port Technical Unit Putri, Anisa; Yani, Alit Hindri; 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

Gillnet fishing gear is an environmentally friendly fishing gear but in 2018-2020 the catch was reduced. The purpose of this study was to determine the sustainability status of gillnet fisheries based on ecological, social, and economic aspects at the Riau Province Fisheries Port Technical Unit. Data analysis in this study used Rapfish (Rapid Appraisal for Fisheries) technique. The rapfish technique is a multidisciplinary ordination technique used to evaluate/determine/compare the status of fisheries in terms of their sustainability. This study shows that in general, the sustainability index of gillnet fisheries in the Riau Province Fisheries Port Technical Unit is between the index values of 25.01-50 which is classified as less sustainable. Monte Carlo simulation results show that the distribution of sustainability index plots is at a distance that is not far and coincides with the position of the sustainability index ordination, supporting the accuracy of determining the ordination of the sustainability status examined. Sensitivity analysis showed that the attributes of changes in fish weight in the last 5 years, family participation in the utilization of fishery resources, and alternative employment and income are attributes that greatly affect the sustainability of gillnet fisheries in the Riau Province Fisheries Port Technical Unit
Assessment of Fisheries Management Status with Ecosystem Approach on Bagan Boat Ship in Bungus Waters Silaban, Recyka; Yani, Alit Hindri; 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

EAFM or Ecosystem Approach for Fisheries Management is a concept of how to balance socio-economic goals in fisheries management while still considering knowledge, information and uncertainty about biotic, abiotic and human interactions in aquatic ecosystems through a comprehensive and sustainable integrated fisheries management. The fishery potential is quite large in Bungus waters and the continuous fishing activities carried out by boat lift fishermen lead to overfishing; therefore fisheries management is very necessary to realize sustainable fisheries, especially for fishery commodities. The purpose of this study was to determine the status of the management of the bagan boat fishery in Bungus pps. This research was conducted in February 2022 at the Samudra Bungus Fishing Port, West Sumatra. The method used in this study uses the method issued by the National Working Group EAFM.DIT SDI KKP; the data taken are primary data and secondary data. Analysis of the data used using an ordinal-based likert scoring with a scoring assessment of 1,2,3. The greater the value, the better the EAFM that has been run. The results of the study show that the management of capture fisheries in the fishing technique domain at PPS Bungus is still lacking in implementing EAFM with a composite value of 18.8
Composition of Catches on Bottom Gill Net Fishing Gear in Sedanau Waters of Natuna Regency Warni, Yulia; Yani, Alit Hindri; Nofrizal, Nofrizal
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 bottom gill net is one of the fishing gears made from a rectangular net installed at the bottom of the water. The basic gill net construction used is a net thread made of monofilament polyamide material, the size of the fishing gear used is a net length of 2.50 meters, a net body width of 1.5 meters, and a mesh size of 3 inches. Knowing the state of the environment is a very important reason to increase the catch by using environmental parameters such as physical parameters that are easier to observe. The main fishing items are Coral Pond (Lethrinus lentjan), Timunan (Lutjanidae vitta), Yellowtail (Lutjanus fulviflamma), Red Snapper (L.bitaeniatus), and Kuwe (Caranx ignobilis). Bycatch is Black Pomfret (Parastromateus niger), Seminyak (Plectorhinchus), Gerut (Pamadasys maculatus), Stingray (Dasyatis sp), Lepu Batu (Pterois volitans), and Crab (Portunidae). This study aims to determine the composition of the catch. This research was carried out in Sedanau waters in Natuna Regency, Riau Islands Province for 7 days in February 2022 using the survey method. One unit of basic gill mesh is operated to collect data and is analyzed by analysis of the composition of types and weights. The results showed that 11 types of fish were caught and dominated by Yellowtail (L.fulviflamma) as many as 77 with a percentage value of 26.46%.
Study of Belat Fishing Gear in the Waters of Dumai, Riau Province Asna, Laena; Bustari, Bustari; 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

Based on data from the Dumai City PPI Office in 2013 and 2019, the number of belat fishing gear in Dumai City has decreased from 20 to 7. It is suspected that there are symptoms of overfishing caused by the non-selectivity of this belat, where the bycatch is greater than the main catch, and supported by belat construction data because it is known that fishermen use a small mesh size of 1 inch. The study's purpose is to find out how the main catch and bycatch which amount of catch is more caught. Data analysis using descriptive analysis and research methods with survey methods. The main catch of belat weighing 1.914.9 kg is composed of white shrimp (Penaeus indicus), kelong shrimp (Penaeus merguiensis), Malaysian prawn (Macrobranchium rosenbergii), smallhead catfish (Euristhmus microceps), bluespot mullet (Crenimugil seheli), gulamah (Panna microdon), and the bycatch weighs 710 kg is composed of Fourfinger threadfin (Eleutheronema tetradactylum), sagor catfish (Hexanematichthys sagor), milk shark (Rhizoprionodon acutus), stingray (Dasyatis sephen), silver sillago (Sillago sihama), white snapper (Lates calcarifer), spotted scat (Scatophagus argus), crab (Portunus pelagicus), pomfret (Pampus argenteus), and saddle grunt (Pomadasis maculates).
Analysis of Ice Supply Needs for Purse Seine Ship Operations in Kutaraja Ocean Fishing Port, Aceh Province Adha, Ridho; Zain, Jonny; 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

This research was conducted in March 2022 at Kutaraja Ocean Fishing Port, Banda Aceh City, Aceh Province. The purpose of the study was to determine what factors determine the amount of ice carried for fishing operations on purse seine fishing gear, and how the relationship between these factors and the amount of ice carried. The method used in this research is the survey method. The data collected were statistically analyzed using the normality test, multicollinearity, ANOVA, Multiple linear regression, and T-Test. The results showed that the size of the ship (X1), the length of the trip (X2), and the amount of catch (X3) affect the amount of ice carried (Y) by purse seine vessels in the form of multiple regression equation Y = 2403.052 - 100.725 X1 + 294.378 X2 + 1.686 X3. The value of the determinant coefficient obtained is 59.4%.
Short Communication: Structure Community of Mangrove in Peunaga Rayeuk Area, Meurebo District, Aceh West Lisdayanti, Eka; Marlian, Neneng; Hutabarat, Malfajri; Riyanti, Levi
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

This study aims to determine the structure of the mangrove community on the coast of Peunaga Rayeuk, Meurebo District, and West Aceh District. The method used in this study was line transect, making transects/plots for each observation station with a size of 10x10 m2 with 3 replications so that each observation station has an area of ​​30x10 m2. This research was conducted in October 2022. There were 2 types of mangroves included in the observation station, namely Rhizophora apiculata and Avicennia alba, while the associated mangrove was of the type Acrostichum speciosum. In addition, there are also associated mangroves that are not included in the observation station but are located around the observation station, namely Nypa fruticans, Hibiscus tiliaceus, and Pandanus odoratissima. Stations 1 and 2 were dominated by sandy and muddy sand substrates, which respectively showed a diversity index of 0.054 and 0.149, a uniformity index of 0.078 and 0.215, and a dominance of 0.478 and 0.252. The most abundant species was R.apiculata with a relative density of 0.949 ind/ha, followed by S.alba of 0.051. Relative cover of R.apiculata and S.alba respectively with the range of 0.302 and 0.698. The results of this study concluded that over all the structure of the mangrove community on the coast of Peunaga Rayeuk is still classified as low, so it requires greater attention in the restoration and management of mangrove ecosystems
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

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