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Journal of Marine and Aquatic Sciences
Published by Universitas Udayana
ISSN : 23028114     EISSN : 25497103     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
Journal of Marine and Aquatic Sciences (JMAS) adalah peer-reviewed, open access journal, diterbitkan oleh fakultas Kelautan dan Perikanan, Universitas Udayana. JMAS menerbitkan hasil peneitian original dan review artikel dalam bidang ilmu kelautan, manajemen sumberdaya perairan, dan aplikasi remote sensing di bidang kelautan dan perikanan.
Arjuna Subject : -
Articles 17 Documents
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Search results for , issue "Vol 9 No 2 (2023)" : 17 Documents clear
Kajian Ikan Terumbu Karang dengan persentase Tutupan Terumbu Karang Hidup di Kawasan Konservasi Perairan Tanjung Labu Kabupaten Bangka Selatan Jemi Ferizal; Wahyu Adi; Adisti Hafizah; Fera Angelia; Fajar Hidayatullah Ramadhani; Ervansyah Maulana; Hendi Hendi; Rama Kristian Fitriyansah; Nadya Syasri Aryani; Jongki Arifandi; Terisna Terisna; Juliana Erika Putri
Journal of Marine and Aquatic Sciences Vol 9 No 2 (2023)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2023.v09.i02.p08

Abstract

Community activities in Tanjung Labu waters include loading and unloading, fishing, coral reef mining, and others. Coral reefs and fish associated are directly affected by these activities. This research was carried out on June 2023 in Tanjung Labu Waters, Lepar District, South Bangka. The aimed of the research was to determined the number of individual indicator, major and target fish and the relationship between live coral reef cover and biomass. The coral reef data collection method uses UPT (Underwater Photo Transect), and coral reef fish use UVC (Underwater Visual Census). The results of the percentage of coral reef cover are in the moderately damaged category, the abundance of coral reef fish is in the very rare category. The relationship between the percentage of live coral reef cover and the abundance of fish in the indicator, major, target categories and coral reef fish biomass, had a positive relationship and was quite strong to strong. The relationship between coral reef fish abundance and biomass was perfectly positive with a very strong correlation coefficient. Factors that influenced the relationship between the percentage of live coral reef cover and the abundance and biomass of coral reef fish were food availability and anthropogenic activities. The relationship between abundance and biomass of coral reef fish was related to length and high abundance. Efforts to manage the Tanjung Labu Village conservation area on Lepar Island, reduce anthropogenic activities, increase education regarding applicable regulations, strengthen supervision and law enforcement (institutional) and rehabilitate coral reefs.
serasah mangrove Produktivitas Dan Laju Dekomposisi Serasah Mangrove Sonneratia Alba, Rhizophora Apiculata Dan Rhizophora Stylosa Di Taman Nasional Bali Barat Gusti Ayu Made Indrayanti; Ni Luh Watiniasih; Ida Bagus Mandhara Brasika
Journal of Marine and Aquatic Sciences Vol 9 No 2 (2023)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2023.v09.i02.p13

Abstract

Mangrove ecosystems produce litter and act as a source of detritus. Mangrove litter will become organic material for the environment, which can indicate that the environmental conditions are fertile. The mangrove environment is fertile, which makes the chain of life. The fallen litter then enters the decomposition process assisted by organisms such as macrozoobenthos and several other animals. In the decomposition process there are several influencing factors such as sunlight, water, substrate and other natural factors. The purpose of this study was to determine which litter productivity and decomposition rate was the highest from Sonneratia alba, Rhizophora apiculata and Rhizophora stylosa in West Bali National Park. This research was conducted for 2 months, starting in January 2021, by taking and measuring samples for 2 weeks. The method of determining the point using purposive sampling. Data analysis for litter productivity by calculating the average dry weight of litter (after oven) and decomposition rate with litter reduction every week (after oven). Productivity Sonneratia alba (3.33 g/week), Rhizophora apiculata (3.83 g/week), Rhizophora stylosa (3.05 g/week). Decomposition rate of Rhizophora stylosa (1.85 g/week), Sonneratia alba (1.71 g/week), and Rhizophora apiculata (1.39 g/week).
Kebijakan Pengembangan Perikanan Tangkap Melalui Analisis SWOT Dan Analytic Hierarchy Process (AHP) Di Kabupaten Buleleng, Bali I Ketut Wija Negara; Endang Wulandari Suryaningtyas; Made Ayu Pratiwi; I Gede Wahyu Suryawirawan; Kadek Adi Chandra Kusuma; Perdana Rizky Khalista; John Lynham
Journal of Marine and Aquatic Sciences Vol 9 No 2 (2023)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2023.v09.i02.p04

Abstract

Buleleng Regency has large fisheries and marine potential, including the capture fisheries sector. Optimal capture fisheries management will be able to provide welfare for community groups that depend on fishing for their lives. This research aims to formulate a policy strategy for the development of capture fisheries in Buleleng Regency. This research was conducted on 15 May - 31 October 2020. The locations for collecting data for respondents were 7 (seven) Districts and 2 (two) Villages in each District in Buleleng Regency. A quantitative descriptive research approach combines SWOT analysis and Analytic Hierarchy Process (AHP). The results of the analysis obtained Progressive Strategy (SO) with a value of x: 0.2 and y: 0.6. This strategy includes the quality of catches, fishing industry areas, coaching and mentoring of fishermen, utilization of fishing ports, fishing business capital, fishing units, and fisherman insurance. The results of the Consistency Ratio (CR) value calculation show a figure of 0.03, which means that the assessment of the strategy criteria is acceptable. The results of the analysis of the policy criteria hierarchy of the Analytic Hierarchy Process (AHP) obtained 5 (five) priority strategies that need to be implemented in collaboration at each level of authority from the Provincial Government of Bali or the Bueleleng Regency Government, namely modernizing fishing units, ensuring the safety and health of fishermen's families through equal distribution of fishermen's insurance receipts, facilitating fishermen's business capital through capital institutions, increasing fishermen's skills and knowledge regarding modernization of technology-based fishing techniques, and utilizing the Sangsit Fish Landing Base (PPI) as the leading center for capture fisheries activities in Buleleng.
Komposisi, Keanekaragaman, dan Relung Ekologi Ikan di Plawangan Timur Segara Anakan, Jawa Tengah Adinda Kurnia Putri; Andika Dewa; Mei Listyani; Laura Rose Sahara; Arif Mahdiana; Rima Oktavia Kusuma; Ahmad Naufal Attaqi
Journal of Marine and Aquatic Sciences Vol 9 No 2 (2023)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2023.v09.i02.p09

Abstract

Plawangan Timur Segara Anakan lagoon is known as the unique aquatic ecosystem that supports the life of aquatic organisms by providing nursery and feeding grounds. However, the Eastern Part of Segaran Anakan Lagoon is also utilized by many industrial and domestic activities that could degrade the quality and quantity of the aquatic ecosystem. This research aims to decribe the composition, diversity, and ecological niches of ichthyofauna from Eastern Segara Anakan Lagoon. Sampling was conducted on 29 June and 19 July 2023, using gillnets which have 1–2-inch mesh size. The diversity of ichthyofauna analyzed using the diversity indices while the distribution of the ichthyofauna were performed using Cannonical Correspondence Analysis (CCA). This study found 120 individuals of fish, that is comprised of 21 species, 19 families and 11 orders. The fish comprised of 18,34% adult and 81,66% juvenile. Most fishes were categorized as marine-freshwater-brackish resident and only I. japonica and S. commersoni species are true marine fishes. The diversity indices showed that Kali Panas station have the highest diversity indices and the lowest indices value were in Ujung Galang station. CCA showed that most fishes that are categorized as Marine, Marine-Reef-associated, and Marine, Brackish, Reef-Associated resident were found in high salinity waters.
Komposisi Jenis Makanan dalam Lambung Ikan Nilem (Osteochilus vittatus Valenciennes, 1842) di Danau Tamblingan, Buleleng, Bali Kadek Prayuda Sathyananta; Nyoman Dati Pertami; Gde Raka Angga Kartika
Journal of Marine and Aquatic Sciences Vol 9 No 2 (2023)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2023.v09.i02.p14

Abstract

Tamblingan Lake is the smallest lake in Bali and is a confined endorheic basin area that very vital for the surrounding environment. Bonylip barb is a fish from the family Cyprinidae that lives in Tamblingan Lake. Information on the composition of such fish food in Tamblingan Lake does not exist. The aims of this study to analyze and explain the food ecology of Osteochilus vittatus, especially the composition of its food types in Tamblingan Lake. The study was conducted in Tamblingan Lake from January to June 2019 using a modified gill nets with the mesh size 0.5; 1.0; 1.5; 2.0; 2.5; 3.0 inches. The fish was carried out at five stations with water characteristics that represent the water conditions of Tamblingan Lake. The fish was obtained during the research were calculated on 216 individuals. Contents of the intestines were observed using a microscope with the census method without replication. Composition of the type of food was interpreted using Microsoft Excel to be described in a chart. The results showed that Osteochilus vittatus in Tamblingan Lake was omnivore fish with 51 species of organisms found consisting of 7 classes of phytoplankton, 7 classes of zooplankton, and 1 class of aquatic plant. Phytoplankton from the class of Bacillariophyceae was the dominant food of Osteochilus vittatus. The class of Bacillariophyceae that was often found was Surirella sp. The food of Osteochilus vittatus change due to changing seasons. Information of Osteochilus vittatus can be used as a basis for fisheries resources management in Tamblingan Lake.
Indeks Kesesuaian Wisata Pantai Batu Bolong, Canggu, Badung Anak Agung Ngurah Agung Dalem Sukmajaya; I Gusti Ngurah Putra Dirgayusa; Gede Surya Indrawan
Journal of Marine and Aquatic Sciences Vol 9 No 2 (2023)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2023.v09.i02.p05

Abstract

The tourism suitability index (TSI) is criteria of resources and the environment to meet the needs of tourism development. The tourism suitability index research was carried out at Batu Bolong Beach, Canggu with the aim of knowing tourism suitability index and tourism area utilization zone for beach recreation activities. Method used field observation by purposive sampling at 4 station points which are divided into a beach length of 640 m. Data retrieval in the form of 10 parameters: water depth, beach type, water current velocity, coastal slope, water base material, beach width, water brightness, dangerous biota, fresh water availability, and coastal land cover. Tourism suitability analysis based on TSI matrix with considering classification of four types categories. The limiting factors at Batu Bolong Beach are the brightness of the waters and the closure of coastal land. The value of tourism suitability for tourism activities in the beach recreation category based on assessment of stations I, II, III, and IV are different, namely 98.80%, 94.04%, 95.23%, and 91.67%. So this indicates that each station in the coastal area can be declared very suitable category for recreational tourism activities. The zones for use of coastal tourism areas include sports, walks, sunbathing, swimming, and surfing. The sunbathing, walking, swimming, and surfing zones can be done at all stations, while the sports zone can be done at stations I and IV. The sacred zone is located in the northern area, stations I and III which are adjacent to station II.
Ikan Nyalian (Barbodes binotatus Valenciennes, 1842) di Danau Tamblingan, Buleleng, Bali Dilihat dari Aspek Makanannya Made Arya Surya Pramana; Nyoman Dati Pertami; Dewa Ayu Angga Pebriani
Journal of Marine and Aquatic Sciences Vol 9 No 2 (2023)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2023.v09.i02.p10

Abstract

Tamblingan Lake is one of four lakes in Bali which is located in Munduk Village, Banjar District, Buleleng Regency, Bali. Spotted barb (Barbodes binotatus) is a freshwater fish belonging to the Cyprinidae family found in Tamblingan Lake. Information regarding the food composition of spotted barb in Tamblingan Lake has not been carried out. This research aims to determine the food of nyalian fish by observing the composition of the type of food in the Tamblingan Lake Waters. Fish sampling was carried out in January-June 2019 using gill nets with a mesh size of 0.5; 1.0; 1.5; 2.0; 2.5; 3.0 cm with length of 300 m and height of 2 m. Fishing was carried out at five stations with different characteristics. Fish samples obtained during the research were 180 fish. The composition food of spotted barb consists of 37 types of organisms consisting of 6 classes of phytoplankton, 6 classes of zooplankton, 1 class of fungi and 1 class of aquatic plants. Most types of food organisms come from the Bacillariophyceae class, which is 16 genera. Species of Surirella sp., Navicula sp., Cymbella sp., and Pinnularia sp. is a genus of the Bacillariophyceae class which is often found every month of observation with the frequency of occurrence respectively 174, 105, 126 and 112. There was not much difference in food composition between nyalian fish in each month of observation. Spotted barb include omnivorous fish (tend to be herbivores) and classified as euryfagus.

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