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All Journal Jurnal Pengolahan Hasil Perikanan Indonesia Journal of Marine and Aquatic Sciences Bumi Lestari Current Trends in Aquatic Science PAPALELE : Jurnal Penelitian Sosial Ekonomi Perikanan dan Kelautan Habitus Aquatica : Journal of Aquatic Resources and Fisheries Management Jurnal Ilmiah Hospitality Management Advances in Tropical Biodiversity and Environmental Sciences
Kartika, I Wayan Darya
Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan Dan Perikanan, Universitas Udayana
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Energy Environmental Science Immunology & microbiology Medicine & Pharmacology Social Sciences Veterinary Other

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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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Abstract

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.
Kandungan Nitrat dan Fosfat pada Air di Sungai Telagawaja Kabupaten Karangasem, Bali Deta Miriam Br Sitepu; Ima Yudha Perwira; I Wayan Darya Kartika
Current Trends in Aquatic Science Vol 4 No 2 (2021)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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This study measured the amount of nitrates and phosphates in thewater of Telagawaja river. The water of this river is used for hygiene sanitation necessity of the people living in the surrounding area. Many antropogenic activities are exists in this area, such as: rafting and hotel, farming, and animal husbandry. This study aimed to know the status of nitrate and phosphate nutrient in the water based on the Indonesia Government Regulation Number 82 of 2001. The amount of nitrate was measured using Salifert Nitrate KIT, while phosphate was measured using Hanna HI 713 KIT. Measurement was also carried out on the total organic matter, dissolved solid, suspended solid, turbidity, dissolved oxygen, water acidity (pH), and temperature. The results showed that amount of nitrate (0.2-0.9 mg/L) and phosphate (0.1-0.4 mg/L) in the water of Telagawaja River was below the tolerance limit for all of usage class. The water of the center and the downstream might be used for fish culture, animal husbandry, irrigation water, and other usages in this standard.
Rasio Konversi Pakan, Pertumbuhan dan Kelulushidupan Ikan Lele (Clarias Sp.) yang Diberi Pelet Komersial dan Maggot BSF Black Soldier Fly (Hermetia Illucens) I Kadek Alamsta Suarjuniarta; Pande Gde Sasmita Julyantoro; I Wayan Darya Kartika
Current Trends in Aquatic Science Vol 4 No 2 (2021)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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The purpose of this study was to determine the feed conversion ratio, weight growth and survival rate of Catfish (Clarias sp.) fed with commercial feed and the black soldier fly larvae (Hermetia illucens). The study was conducted from February-March 2021 located at PT Bala Biotech Indonesia, Karangasem, Bali. This study used an experimental method with a completely randomized design consisting of 3 treatments and 3 repetitions. The treatment A used 100% commercial feed, treatment B used 50% commercial feed + 50% BSF larvae and the treatment C used 100% BSF larvae. The result showed that the fish survival was 33±2.89%, weight growth 35.0±1.89g and FCR 0.67 in the treatment A, while treatment B resulted in 35±5.00% of survival, weight growth 33.6±0.85g and FCR 0.82, treatment C had 47±2.89% survival 18.7±1.89 g weight growth and FCR 1.12. The water quality parameters measured such as DO was ranged at 6.6-7.4 mg/l, temperature 25.8-25.9 oC, pH 6.9-7.0, ammonia level 0.7-1.4 mg/l, nitrite level 0.1-0.6 mg/l and nitrate level 3.0-5.3 mg/l. This study concluded that fish fed with 100% maggot BSF resulted in highest fish survival but the fish growth was lower compared to other treatments. Finally FCR in all treatments were not significantly different (P>0.05).
Studi Perubahan Kandungan Histamin Ikan Lemuru (Sardinella lemuru) Pada Kondisi Suhu Ruang/Terbuka Wafi Ayodhya Satyadharma; Ima Yudha Perwira; I Wayan Darya Kartika
Current Trends in Aquatic Science Vol 5 No 1 (2022)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Examination the quality of freshness of fish is important to increase the level of fish consumption (protein consumption) of Indonesian society. If the handling is not correct, the protein contained in fish will be used by microorganisms to reproduce and reduce the quality of the fish and the formation of histamine content. The purpose of this study is to determine the histamine content in sardine fish and the relationship between the histamine content in sardine fish that were left at room temperature. This research is conducted by taking sardine fish samples at PPN Kedonganan, then leaving them on a 2 hour time scale. After settling the sardine fish, the histamine content testing using the ELISA method. Histamine content in sardines (Sardinella lemuru) left for 2 hours ranges from 3.1-39.9 ppm, histamine content in sardines (Sardinella lemuru) which is left for 4 hours ranges from 30,0-40,5 ppm, and histamine content in sardines (Sardinella lemuru) which were left for 6 hours ranged from 42.1-100 ppm.The increase in histamine content in sardine fish (Sardinella lemuru) can be affected by room temperature, the longer the sardine fish is left at room temperature, the histamine content in sardine fish can increase.
Peringatan Dini Keberadaan Arsen (As) pada Air dan Sedimen di Hilir Sungai Tukad Badung, Bali Alfi Hermawati Waskita Sari; I Wayan Darya Kartika
Journal of Marine and Aquatic Sciences Vol 8 No 2 (2022)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2022.v08.i02.p04

Abstract

Tukad Badung is a large river in Bali that crosses Denpasar City which is densely populated and has a variety of activities: household activities, agriculture, animal husbandry, hotels, hospitals and industry. These various activities result in the entry of various heavy metals into the river water, including Arsenic (As), which eventually settles in the sediment. Arsenic has high toxicity and is included in Endocrine Disrupting Chemicals (EDCs). Information related to the presence of Arsenic in waters and sediment is very necessary to prevent its negative impact on ecosystems and human health. This research method is descriptive. Arsenic was 0.769 mg/L at point I, was not detected at points II and III, while at point IV Arsenic was measured at 0.081 mg/L. Arsenic (As) at point I and IV exceeded the threshold set based on PP number 82 of 2001 concerning Water Quality Management and Water Pollution Control, because it measured > 0.05 mg/L. The content of Arsenic (As) in downstream river sediment Tukad Badung, taken at point IV, measured 22.895 mg/kg; this value has also exceeded the threshold.
Kandungan Bahan Organik Total (BOT) dan Kekeruhan pada Air di Estuari DAM, Badung, Bali Ahmad Alfian Rahman; Ima Yudha Perwira; I Wayan Darya Kartika
Current Trends in Aquatic Science Vol 5 No 2 (2022)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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This study aimed to know the Total Organic Matter (TOM) of water and the water quality in the Estuary DAM, Badung, Bali. This study was carried out for 1 month along March of 2021. Water samples were collected from 4 stations representing: the inlet (station 1), the middle part (station 2 and 3), and the outlet (station 4). The TOM of water was measured using Permanganate Test titrimetrically. Dissolved Oxygen (DO), pH and water turbidity were measured using: DO meter, pH meter, and Turbidimeter. Result of the study showed that the TOM of water in the Estuary DAM was ranging from 1,8 to 13,9 mg/L. The TOM of water at Week 2 and 4 was relatively low compared to other period which might be caused by dilution regarding to the high rainfall in this period. The DO level was ranging from 4,0 to 6,5 mg/L, pH was ranging from 6,0 to 6,2, and turbidity was ranging from 3,73 to 13,82 mg/L
Studi Kelimpahan Bintang Mengular (Ophiuroidea) di Pesisir Pantai Nyang-Nyang, Bali Yusuf Arifianto Purnomo; Devi Ulinuha; I Wayan Darya Kartika
Current Trends in Aquatic Science Vol 6 No 2 (2023)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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The goal of this study was to determine the habitat characteristics and population density of brittle stars in coastal area of Nyang-Nyang Beach, Bali. To facilitate the process, observations were made between November and January from 3:00 p.m. to 6:00 p.m., when the tide was at its lowest. The methodology of survey and descriptive comparative approach research was used. Purposive sampling was used to determine observation and sampling locations: two stations known to be brittle star habitats were chosen as research sites. The variables observed were two: biota community structure observations of brittle star variables at the genus level, such as abundance, diversity, evenness, and dominance, which were measured using 1 x 1 m plots. Environmental water quality variables such as beach characteristics, pH, salinity, water temperature, Dyssolved Oxygen, and current velocity are observed. Microsoft Excel was used to perform data analysis calculations. According to habitat analysis, the coast of Nyang-Nyang Beach provides an ideal habitat environment for Echinodermata, particularly the Ophiuroidea class, includes brittle stars. Nyang-Nyang beach had the brittle stars density, with 24 ind/m2 recorded. With an H' value of 0.514, but it was classified as having low diversity. The evenness index value on Nyang-Nyang Beach is 0,468, and there is no dominant genus along the coast of Nyang-Nyang beach because the dominance index value on this beach is close to 0.
Kondisi Sosial Ekonomi dan Nilai Tukar Nelayan di Desa Sanur Kaja, Denpasar, Bali Ika Setiarini; I Wayan Restu; I Wayan Darya Kartika
Current Trends in Aquatic Science Vol 6 No 2 (2023)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Important aspects that affect the level of welfare and the economy of fishermen are the socio-economic conditions and exchange rates of fishermen. The purpose of this study was to determine the socio-economic conditions and exchange rates of fishermen in the Sanur Kaja Village. Primary data was obtained based on observations, interviews, and questionnaires on respondents (samples) by purposive sampling, which includes data on social aspects (age, education, number of family dependents, and variety of jobs) and data on economic aspects (fishery income, expenses, and non-fishery income). All data were analyzed using a qualitative and quantitative approach, namely data analysis for calculating Fishermen's Exchange Rates (NTN). Based on the data obtained, the age range of fishermen is 28 years to 61 years, with varying levels of education ranging from not having finished elementary school, elementary school, junior high school, high school, and Diploma to Bachelor with the number of family dependents ranging from 1 to 6 people. The income earned varies from < IDR. 200,000 to IDR. 750,000 with expenses starting from IDR. 100,000 to IDR. 200,000 on 1 time went to sea. Based on the calculation results, the NTN is above 1, which is 1.59. With NTN above 1, this means that fishermen are said to be able to fulfill their basic needs.
Keseragaman dan Kondisi Karang Family Acroporidae di Kukusan Besar, Labuan Bajo, Flores, Nusa Tenggara Timur Johannes Lumban Tobing; I Wayan Arthana; I Wayan Darya Kartika
Current Trends in Aquatic Science Vol 6 No 2 (2023)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Kukusan Besar, Labuan Bajo, which is located in East Nusa Tenggara is one of the fertile waters that was a diversity of marine biota in the form of coral reefs. The purpose of this study was to determine the uniformity and condition of corals, especially the corals of the Acroporidae Family. This research was carried out from November 2021–April 2022. Determination of coral data collection points used a purposive sampling method. Retrieval of coral data using the underwater photo transect (UPT) method, with the transect spread along 50 meters in the direction of the coastline at every point of depth of 3, 5 and 7 meters. Underwater photos were analyzed using CPCe software. Coral cover at a depth of 3 meters is 29.12%. The depth of 5 meters is 36.54% and at a depth of 7 meters is 42.18%. At depths of 3 and 5 meters the corals of the Acroporidae family are dominated. The highest diversity index is found at a depth of 7 meters with a value of 2.20. The highest uniformity index was found at a depth of 5 meters with a value of 0.69. Family Acroporidae at a depth of 3 and 5 meters found 4 genera namely Acropora, Montipora, Astreopora and Anacropora, while at a depth of 7 meters there were only 2 genera namely Acropora and Montipora.
Pengaruh Hutan Mangrove pada Mitigasi Intrusi Air Laut di Surabaya Arisanti Dyah Puspitasari; I Wayan Restu; I Wayan Darya Kartika
Bumi Lestari Journal of Environment Vol 23 No 2 (2023)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/blje.2023.v23.i02.p08

Abstract

Seawater intrusion is the entry of seawater into the land through the soil pores. Seawater intrusion harms sanitation activities. Surabaya constitutes a city with a high population density, which leads to high demand for water that is not proportional to the water input that cause seawater intrusion. Mitigation efforts to minimize the occurrence of seawater intrusion were by planting mangrove forests which act as coastal protection systems. The purpose of this study was to determine the water quality of the wells in Kenjeran and Rungkut, as well as to determine whether the presence of mangroves could affect the water intrusion mitigation. Samples were taken from 2 stations in Kenjeran and Rungkut with 3 sampling points and 3 repetitions. The parameters measured were consist of salinity, electrical conductivity, chloride, and total hardness. The samples of laboratory results were analyzed comparatively with the Kruskal Wallis test. It showed that the water in the coastal areas of Kenjeran and Rungkut was categorized as saline water with an average salinity value ranging from 3.1–7.2 ppt. Electrical conductivity values ??ranged from 6916-7993 mmhos/cm. Chloride values ??ranged from 1825-3848 mg/l. Total hardness values ??ranged from 320-1025 mg/l. Based on the values ??above, the quality of well water in both locations is classified as having experienced seawater intrusion. The existence of a mangrove forest landscape has no significant effect on mitigating seawater intrusion, this is presumably because the low percentage of mangrove cover (3.2%) cannot degrade seawater intrusion in Rungkut. Keywords: Groundwater; Mangrove Forest; Mitigation; Sea water intrusion; Surabaya.
Co-Authors Agus Wahyudi Ahmad Alfian Rahman Alfi Hermawati Waskita Sari Alya Namira Anisa Oka Dina Arisanti Dyah Puspitasari Atsna Qi Doma T. Manihuruk Bagus Made Sabda Nirmala Bagus Putu Wahyu Nirmala Deta Miriam Br Sitepu Devi Ulinuha Dewangga Ari Kusuma Putra Hutagaol, Larasati I Gede Agus Isha Purusa I Kadek Alamsta Suarjuniarta I Ketut Wija Negara I Putu Fery Karyada I Wayan Arthana I Wayan Arthana I Wayan Arthana I Wayan Restu I Wayan Restu I Wayan Restu Ika Setiarini Ima Yudha Perwira Ima Yudha Perwira Johannes Lumban Tobing Jordan Alexander Anggiat Simanjuntak Kadek Bayu Prabha Mahesswara Ketut Adnyane Mudite Mahendra Duwi Astutik Ni Luh Watiniasih Nico Mulia Subekti Nyoman Dati Pertami Pande Gde Sasmita Julyantoro Putu Eka Wirawan Sherina Oktafianti Silitonga, Lidya Permata Sari Sitanggang, Melani Suprabadevi Ayumayasari Saraswati, Suprabadevi Ayumayasari Theresia Alvianita Muga Tomtommy Haykal Wafi Ayodhya Satyadharma Widya Purnama Dewi Wini - Trilaksani Winni Anugrah Hani Yulia Kartika Yusuf Arifianto Purnomo