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Analisa Kelayakan Usaha Purse Seine pada KM Bintang Bahagia 6 di Pelabuhan Umum Benoa, Provinsi bali Maria Angelina Vicario Tonga; I Wayan Restu; I Ketut Wija Negara
Current Trends in Aquatic Science Vol 3 No 2 (2020)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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This study objectives is to determine how the condition of the purse seine fishery business and also to determine the feasibility of the purse seine fisheries business in Benoa Public Port. In this study the method used is descriptive quantitative method. The data analysis method used is by calculating income, depreciation, and business profits, then to find out the business feasibility calculated the value of the payback period, B / C ratio, break event point. The primary data taken is data belonging to KM Bintang Bahagia 6 which is in the form of fish catch data per trip for 1 year, investment costs, fixed costs and variable costs, while secondary data is taken from the literature as well as data from the Directorate General of Marine Resources and Fisheries in the form of data on the number of purse seine fleets and the number of catches of purse seine vessels in Benoa Public Port. The condition of the fisheries business with purse seine fishing equipment in Benoa Public Port can be categorized as still quite good. This can be seen from the large number of operating fleets and the catches obtained are still relatively stable. The value of the payback period obtained is 1.1, B / C ratio 1.6, and BEP units of 99,433 kg and BEP sales of Rp 2,165,557,791. With this analysis, it can be stated that purse seine fisheries are feasible.

Keterkaitan Tingkat Kesuburan Perairan Keramba Jaring Apung Dengan Fitoplankton Di Desa Terunyan, Danau Batur, Bali Ifan Martin Nopem; I Wayan Arthana; Ayu Putu Wiweka Krisna Dewi
Current Trends in Aquatic Science Vol 3 No 1 (2020)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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This objective of this study is to determine the relationship of the level of water fertility in the waters of cage with phytoplankton in Terunyan Village, Batur lake. Data collected once a week in three months from November 2018 - January 2019. This study used descriptive methods and sampling points were determined using a purposive sampling technique based on the number of cage in the lake which consists of 3 points. Points 1 was the maximum number of cage of ± 500 pieces. Points 2 has a smaller number of cage which was ± 200 pieces. Points 3 was in location of no cage site. The abundance of phytoplankton tend to be less in the point that had more cages and overall the study obtained 14 phytoplankton genera from 4 phyla. The value of phytoplankton Abundance ranges from 4647 -7374 sel/L which is cathegorized in mesotrophic waters. The results of measurement of water quality parameters in a row with the range TSS 5.0 - 6.7 mg/L; Ammonia 0.155 - 0.177 mg/L; Nitrate 0.288 - 0.306 mg/L; Phosphate 0.207 - 0.565 mg/L; pH 7.9 - 8.0; Temperature 26 - 270C, Turbidity 3.049 – 3.410 NTU; DO 6.4 - 6.9 mg/L; Brightness 135.3 - 140.1 cm and TDS 107.5 - 130 mg/L.

Pertumbuhan Rumput Laut (Eucheuma cottoni) Menggunakan Metode Penanaman Berbeda Dengan Sistem Kantong Di Perairan Pantai Pandawa, Badung, Bali Akbar Akbar; Ni Luh Watiniasih; Ayu Putu Wiweka Krisna Dewi
Current Trends in Aquatic Science Vol 3 No 2 (2020)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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This study aims to determine the level of effectiveness and efficiency of seaweed growth grown in bags with different methods. This research was conducted in the village of Kutuh in the waters of Pandawa Beach in December 2019 to January 2020, by taking data once a week for 6 weeks. This research is experimental using Completely Randomized Design (CRD) which consists of two different treatments namely A (Apart in a bag) and B (Bound in a bag). The results showed that the growth pattern of seaweed in treatments A and B was almost the same. Treatment A added weight of seaweed in the 6th week reached 638,444 grams and treatment B reached 637,333 grams. Specific Growth (SGR) Treatment A was 4,409% while treatment B was 4,413%. The results of interview of 10 respondents who were interviewed 70% of farmers prefer to remain a seaweed cultivator and another 30% choose to switch professions as a provider of tourism services. Of the 70% percentage can be said that 100% of farmers prefer Treatment A as a method that can be applied. The measurement of water quality during the study were temperature range between 28,5 - 33 0C, depth ranged from 0,47 – 1,5 m, pH ranged from 7-7.7, salinity ranged from 26,3 - 34 ppt, DO ranged from 5,1 – 7,9 mg / l, nitral ranged between 1,87 – 2,04 mg / l, phosphate ranges from 0,25 – 0,33 mg / l. The value of water quality is still in the optimal range for seaweed growth.

Analisis Kesesuaian dan Daya Dukung Ekowisata Kategori Wisata Pantai di Pantai Pulau Merah Banyuwangi Fuad Hasin Ahmad; I Wayan Restu; Ni Putu Putri Wijayanti
Current Trends in Aquatic Science Vol 3 No 2 (2020)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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The study aimed to determine the tourism suitability index and carrying capacity of Red Island Beach. The study was carried out using descriptive method. The study used purposive sampling to determine the tourism suitability index, while the data used for determination of tourism carying capacity was collected directly using QGIS software. The data was colledted from 3 stations along the Red Island Beach, and the distance of each station was 1000 m. The distance of sampling from the beach was 10 m, and performed in triplicate. Parameters measured in this study were: water depth, beach type, beach width, substrate type, water current, slope, water sharpness, land cover, dangerous biota, and freshwater availability. The results showed that the value of the tourism suitability index from 3 stations was categorized into S1 (Very Suitable) (IKW> 80%). The result indicates that the beach of Red Island Banyuwangi can support the development of recreational beach activities. As for the value of the support of the area divided into 2 categories, for the tourism category of recreational beaches obtained the value of carrying capacity of 1,500 people/day, swimming category obtained the value of the support of 240 people/day. It could be concluded that carrying capacity of Red Island Beach is categorized as under carrying capacity. The visitor should be increased up to 36% to reach a balance tourism visit.

Keanekaragaman Makrozoobetos Sebagai Bioindikator Kualitas Perairan di Taman Hutan Raya Ngurah Rai, Bali Ari Isnen Sobari; Ni Luh Watiniasih; Dewa Ayu Angga Pebriani
Current Trends in Aquatic Science Vol 3 No 1 (2020)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Ngurah Rai Forest Park (Tahura) is one of the mangrove ecosystem areas in Bali which is an area of brackish forest type. Ngura Rai Tahura is based on administration in two city districts namely Badung and Denpasar. The Tahurah Ngurah Rai area is surrounded by housing, restaurants, hotels, malls, and shops as centers of community activities that have the potential to cause disruption to the balance of the aquatic ecosystem. The purpose of this research is to determine the diversity of macrozoobenthos and the condition of water quality in the mangrove ecosystem area in Tahura Ngurah Rai, Bali. This research uses a descriptive quantitative method that is exploratory in order to obtain facts of the conditions that exist through surveys in the field and identification in the laboratory. The sampling technique used was purposive sampling with transect quadrant measuring 1 x 1 m with teransek determination area of 5 m x 5 m. Sampling was carried out at four stations which included macrozoobenthos samples, measurement of water quality parameters (temperature, salinity, pH, DO, turbidity), and analysis of water-based substrates performed visually. Data from research conducted at three different locations in the Ngurah Rai Tahura mangrove ecosystem area found 55 species with a total abundance at station 1 6.68 ind / m2, station 2 4.52 ind / m2, station 3 3.55 ind / m2 from the class Gastropoda, Crustacea, Bivalvia, and Polychaeta.. Diversity index at the three stations is classified as moderate level with water conditions that have experienced pressure or disturbance.

Tingkat Reduksi Kromium Heksavalen (Cr6+) pada Air dengan Menggunakan Kombinasi Kultur Chlorella sp. dan Spirulina sp. Anisa Oka Dina; I Wayan Darya Kartika; Ima Yudha Perwira
Current Trends in Aquatic Science Vol 3 No 1 (2020)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Penelitian ini bertujuan untuk mengetahui kemampuan dari Chlorella sp. dan Spirulina sp. pada kultur kombinasi dalam mereduksi logam berat kromium heksavalen (Cr6+) dalam air. Penelitian ini dilakukan di Balai Besar Perikanan Budidaya Air Payau (BBPBAP) Jepara dari bulan Desember 2018 sampai Februari 2019. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL), yang terdiri dari tiga perlakuan dan tiga kali pengulangan yaitu perlakuan A (Chlorella sp.), perlakuan B (Spirulina sp.), dan perlakuan C (kombinasi).Berdasarkan hasil penelitian diketahui bahwa kultur kombinasi Chlorella sp.dan Spirulina sp. menunjukkan tingkat reduksi logam berat kromium heksavalen yang paling tinggi (20%) dibandingkan dengan kultur dari masing-masing secara individu (dari 6,0 ppm menjadi 4,8 ppm). Tidak ada pengaruh dari logam berat kromium heksavalen pada kepadatan fitoplankton selama proses kultur. Kualitas air yang diukur selama penelitian yaitu salinitas dengan nilai 15 ppt, nilai DO berkisar 6,9-7,3 mg/L, nilai suhu 21-22,5?C, dan nilai pH berkisar 7,4-7,9.

Analysis Kesesuaian Pengembangan Wisata Bahari Berkelanjutan di Pantai Jemeluk, Amed, Kabupaten Karangasem, Bali Juliyah Emka; I Wayan Restu; Suprabadevi Ayumayasari Saraswati
Current Trends in Aquatic Science Vol 3 No 2 (2020)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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The diversity of biodiversity in Jemeluk Beach did not guarantee that all marine tourism activities on Jemeluk Beach was not have damage or negative impact on the environment. This research was conducted to determine how the suitability of marine tourism conditions (snorkeling, diving, and beach recreation) in an effort to preserve sustainable marine tourism. This research used the analysis of tourism suitability by comparing the characteristics and quality of land against land use requirements for certain tourism activities. The method of measuring coral cover used the LIT (Line Intercept Transect) method which is based on the form of coral growth. Measurement of the type and number of reef fishes was assessed using the UVC (Underwater Visual Cencus) method by taking data along 50 meters at the same depth as the coral cover data collection. The suitability condition of snorkeling tourism at points I and II was classified as quite appropriate with a value of 78% and 72.23%, while point III was classified as conditionally appropriate with a value of 46.3%. The suitability of diving tourism at points I and II were classified as conditional according to the values of 44.5% and 38.2%, while point III was classified as incompatible with the value of 33.34%. While the results of the calculation of the suitability of the beach tourism index showed a very suitable category with a value of 90% to be used as an object of marine tourism development.

Tingkat Dekomposisi Bahan Organik pada Sedimen Tambak Udang Vanname di Desa Musi, Kecamatan Gerokgak, Buleleng, Bali Ahmad Fauzi; Ima Yudha Perwira; Made Ayu Pratiwi
Current Trends in Aquatic Science Vol 3 No 2 (2020)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Penelitian ini bertujuan untuk mengetahui tingkat dekomposisi bahan organik dalam sedimen tambak udang Vanname. Penelitian dilaksanakan di desa Musi, Kecamatan Gerokgak, Kabupaten Buleleng, Bali. Kegiatan budidaya udang vannamei menghasilkan bahan organik yang terus-menerus terakumulasi pada substrat dasar tambak, sehingga dapat mengurangi kualitas media budidaya dan kualitas perairan di sekitarnya. Penelitian ini dilaksanakan pada bulan April 2019. Sampel sedimen dan sampel air dikumpulkan dari 10 kolam yang dipilih secara acak. Pengambilan sampel sedimen dilakukan melalui saluran pembuangan central/tengah. Sedangkan sampel air diambil secara langsung pada tambak. Karbon organik (OC) diukur dengan menggunakan Metode Walkley and Black, Total Nitrogen (TN) diukur menggunakan Metode disltilasi Kjeldahl secara titrasi, Total Bakteri (TB) diukur menggunakan Metode Total Plate Count (TPC) dengan tekhnik spread plate. COD air diukur menggunakan metode titrimetri berbasis permanganat, sedangkan DO diukur menggunakan Metode Winkler. PH air diukur menggunakan pH meter, dan suhu diukur menggunakan termometer. Hasil penelitian menunjukkan bahwa rata-rata Karbon Organik (OC) dalam sedimen adalah 20,2%, Total Nitrogen (TN) 1,0%, dan Total Bakteri (TB) 15 × 106 CFU/gram. Nilai rasio C/N pada sedimen didapatkan sebesar 22. Rata-rata COD air adalah 18,3 mg / L, DO adalah 7,4 mg / L, pH 6,8, dan suhu 30,2oC. Hasil ini menunjukkan bahwa dekomposisi bahan organik dalam sedimen tambak udang Vannamei di desa Musi dalam kondisi seimbang.

Analisis Kelayakan Usaha Penangkapan Ikan Teri (Stolephorus sp.) Nelayan Tradisional di Desa Sanggalangit, Kecamatan Gerokgak, Kabupaten Buleleng, Provinsi Bali. Ni Kadek Dwi Widyanti Putri; I Wayan Restu; I Ketut Wija Negara; I Gede Wahyu Surya Wirawan
Current Trends in Aquatic Science Vol 4 No 1 (2021)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Sanggalangit is one of the villages in Gerokgak District, Buleleng Regency, Bali Province. This village located at the coastal area. The main catch of fishermen in there is anchovy (Stolephorus sp.). The feasibility analysis of anchovy fishing business by traditional fishermen in Sanggalangit aims to determine the condition of the fishing business and analyze the feasibility of anchovy fishing business in Sanggalangit. This research took place from December 2019 to January 2020. Primary data were obtained by interview and direct observation in the field. Sampling was done by purposive sampling for 30 times fish landing (30 trips). Based on the data obtained, the fishing business classified as small scale (traditional) with a profit sharing system. Profit sharing system were 50% for owner's fishermen and 50% for working fishermen. Investment costs incurred in the amount of Rp. 58,200,000. The fixed cost per trip is Rp. 70,529 and the average variable cost per trip is Rp. 425,708. Average revenue per trip Rp. 706,417 with a profit Rp. 210,179. The value of the Production BEP is 2,156 kg and the Sales BEP is Rp 37,275,815 in a year. Analysis of R /C Ratio obtained a value of 1.42 shows that the business is feasible to run and can provide benefits. Payback Period value 1.32 shows that the category of initial capital return is relatively fast.

Kajian Aspek Reproduksi Ikan Tongkol (Auxis thazard) yang Didaratkan di Pantai Segara Kusamba, Bali pada Musim Barat Ni Luh Sari Risna Dwi Jayanti; Ima Yudha Perwira; Made Ayu Pratiwi
Current Trends in Aquatic Science Vol 4 No 1 (2021)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Frigate Tuna is one of the most economical catched fish at the Segara Beach, Kusamba. This study was aimed to observe the reproduction aspect of Frigate Tuna (Auxis thazard). The reproduction aspect observed in this study were: sex ratio, gonado-somatic index (GSI), gonad maturity level (GML), fecundity, and first length of maturity. The condition factor was also observed in this study. Sampling was carried out from November to December 2019 by collecting 84 individuals of Frigate Tuna fish. The result showed that the sex ratio between male and female showed balance condition with sex ratio value of 1:1.8. Analysis on the gonad showed that Gonado-somatic index (GSI) of male and female were were 0.0124 – 0.0308 % and 0.0142 – 0.0254 %, respectively. The fecundity of the fish was ranging from 106,430.6 to 518,843.9 eggs. The length of the first maturity for male and female was 337.716 ± .012 mm and 333.053 ± 0.009 mm, respectively. Total length of the fish was ranging from 317 to 405 mm, while the body weight was ranging from 414.27 to 854.52 gram.

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Contact Name
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Journal Mail Official
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Location
Kota denpasar,

Bali

INDONESIA