Garuda - Garba Rujukan Digital

Kajian Kajian Standing Stock Ikan Lemuru (Sardinella lemuru) di Perairan Selat Bali Menggunakan Metode Hidroakustik I Gede Merta Yoga Pratama; Mutiara Rachmat Putri; Agus Setiawan
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.p07

The Bali Strait area contains various fishery resources, one of which is Sardinella lemuru. Nevertheless, the community struggles to apply technology to estimate the biomass of Lemuru in the water column. This research aims to estimate the biomass of Lemuru using hydroacoustic method in Bali Strait. The primary data for this research was taken in 3 fish-catching trips in Bali Strait area, involving the traditional fishermen in Badung Regency. The relevant data for this research are: acoustic data collected by BlueRobotics Ping Sonar Altimeter and Echosounder. The processed data were quantitatively analyzed by its Target Strength (TS) and the estimation of fish length, weight, and density. The data validation was done by comparing the acoustic data calculation result to the 120 fish samples measured after being caught. This research resulted that, from the 3 catching trips of Lemuru in Bali Strait area, the Target Strength (TS) being in the range of -49.5 dB to -40.5 dB; the estimated fish length (L) of 7,94 cm to 22,4 cm; and the estimated fish weight of 5 grams to 112 grams. There were 13,823 fishes detected by the sensor with the average density of 4.100 ind/1.000m3. The total estimated biomass of Lemuru among the 3 trips is 1.040 kg in the water area of 7,3 km2, hence 142 kg/km2.

Klasifikasi Spesies Mangrove Menggunakan Drone di Nusa Lembongan, Bali Gusi Anom Andika Harnanditya; I Wayan Gede Astawa Karang; I Wayan Nuarsa
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.p12

Mapping of mangroves using remote sensing technology has been widely carried out, especially in coastal areas of Indonesia. The most used remote sensing technology is satellite imagery. However, there are still some weaknesses in the use of satellite imagery for mapping mangrove, especially at the species level, including taking a long time, high costs, and low spatial resolution. One of the breakthroughs in remote sensing is drone. Drones have advantages, namely time flexibility, relatively low cost, and high spatial resolution. The purpose of this study was to determine the ability to use drones in mapping mangrove up to the species level and distribution of mangrove species in Nusa Lembongan. The method used is classification of GEOBIA (Geographic Object Based Image Analysis). Drone images were obtained with four flight missions in the northern and eastern areas of the Nusa Lembongan mangrove forest. Field data collection was carried out using a systematic random sampling method and high-resolution single band drones. The results showed that drone observations were able to identify two mangrove species in the northern research area and four mangrove species in the eastern Nusa Lembongan research area. In the northern area there are mangrove species Rhizophora apiculata and Bruguiera gymnorrhiza. In the eastern region, mangrove species Rhizophora apiculata, Avicennia alba, Sonneratia alba, and Avicennia lanata were found. The accuracy test in both research areas in the northern and eastern areas of Nusa Lembogan obtained an overall value with an average of 65% and a kappa coefficient of 0.56.

Struktur Komunitas Makrozoobenthos Pada Daerah Pasang Surut Di Zona Pemanfaatan Taman Hutan Raya (Tahura) Ngurah Rai, Desa Pemogan, Suwung Kauh, Denpasar Putu Eva Setiawati; I Gusti Bagus Sila Dharma; Elok Faiqoh
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.p03

The mangrove ecosystem lives along the coast and influenced by tidally process. The mangrove ecosystem has many functions and associated with different types of biota, one of them is macrozoobenthos. Macrozoobenthos is organism that live at the bottom of the substrate. This study aims to determine the community structure of macrozoobenthos and the influence of physic-chemical sediments parameters (temperature, salinity, pH nitrates and phosphates) of the abudance of macrozoobenthos in the Using Zone Taman Hutan Raya (Tahura) Ngurah Rai, Pemogan Village, Denpasar. Data analysis using by Bray Curtis index to see the similarity between the stations and Principal Component Analysis (PCA) to see the parameters that influence the abundance of macrozoobenthos. Result showed that the diversity index of macrozoobenthos is low - medium, Eveness index is low - high and Dominance index is medium-high. The highest similarity is between station 3 and 4, while station 1 has no similarity with other. PCA analysis showed that abundance of macrozoobenthos was influenced by temperature, salinity, nitrate, and phosphate.

Analisis Aspek Ekobiologi Ikan Kakatua (Scaridae) di Perairan Pulau Tikus Kota Bengkulu Ria Ramadhani Dafitri; Zamdial Zamdial; Ayub Sugara
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.p17

The large potential of marine fisheries owned by the City of Bengkulu can be an economic source for the local community. The fish potential comes from pelagic fish and reef fish. One of the reef fish is the parrot fish (Scaridae). Parrot fish in Bengkulu City are obtained from Tikus Island which are sold on Malabero Beach. The purpose of this study was to analyze the ecobiological aspects of parrot fish (Scaridae) in Tikus Island waters, Bengkulu City. The results of this study are expected to provide information in the form of valid data regarding the ecobiological aspects of parrot fish (Scaridae) in Tikus Island waters, Bengkulu City. In this study, data collection to look at ecological or environmental aspects was carried out by direct observation in the field at 3 stations, while biological aspects, namely food habits (amount/type of food), were observed through a microscope in the laboratory. The results of water parameter measurements, namely the temperature at station 1 ranged from 28-29 0C, station 2 is 29 0C, station 3 is 29 0C. pH value at station 1 is 7.0-7.3, station 2 is 7.3-7.7, station 3 is 6.5-7.1. Salinity values at station 1 is 31 ppt, station 2 is 30 ppt and station 3 is 31 ppt. Dissolved oxygen (DO) at station 1 ranged from 5.6-6.3 mg/L, station 2 5.2-5.3 mg/L and station 3 5.6-6.1 mg/L. The water brightness at station 1 is 9.2 m, at station 2 is 6.6 m and at station 3 is 7.4 m. Current velocity at station 1 ranges from 0.09-0.11 m/s, station 2 are 0.08-0.14 m/s, and at station 3 ranges from 0.05-0.09 m/s. Water depth at station 1 is 9.2 m, station 2 is 7.3 and station 3 is 7.5 m. These results indicate that Tikus Island water have a good environment for survival and habitat of parrot fish (Scaridae) or other marine biota. Furthermore, the biological aspects studied are food habits. Based on the identification results, 4 groups of food types were found in the parrot fish stomach, namely phytoplankton, zooplankton, sand coral, and were not identified. The percentage of food groups found from phytoplankton, zooplankton, sand coral, and not identified were 53%, 3%, 15%, 29%, respectively.

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

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

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

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

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

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

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.

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kota denpasar,

Bali

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name -

Contact Email -

Phone -

Journal Mail Official -

Editorial Address -

Location Kota denpasar, Bali INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kota denpasar,

Bali

INDONESIA