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All Journal Ecotrophic, Journal of Environmental Science BIOTROPIA - The Southeast Asian Journal of Tropical Biology Jurnal Akuatika Indonesia Acta Aquatica: Aquatic Sciences Journal Jurnal Riset Akuakultur INTERNATIONAL JOURNAL OF ENVIRONMENT AND GEOSCIENCES PAPALELE : Jurnal Penelitian Sosial Ekonomi Perikanan dan Kelautan Jurnal Media Akuakultur Indonesia Journal of Fisheries & Marine Ulil Albab
I Wayan Arthana
Program Studi Manajemen Sumberdaya Perairan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Udayana. Jl. Kampus Bukit Jimbaran 80361, Bali
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences Veterinary Other

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THE GROWTH OF TILAPIA CULTURED IN AN AQUAPONIC SYSTEM WITH DIFFERENT STOCKING DENSITIES Irania, Khadijah; Arthana, I Wayan; Kartika, Gde Raka Angga
Jurnal Media Akuakultur Indonesia Vol 2 No 1 (2022): Indonesian Journal of Aquaculture Medium
Publisher : Program Studi Budidaya Perairan Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/mediaakuakultur.v2i1.1378

Abstract

Aquaponics is a combination of aquaculture technology with hydroponic technology in one system to create a symbiotic relationship between the two. The main component in the aquaponics system is fish, where fish waste and feed residues as a nutrient supply are very dependent on aquatic plants. Stocking density is one of the things that needs to be considered in aquaponic fish farming systems. Inappropriate increase in stocking density can cause adverse effects that are detrimental to farmers. This study aims to determine the best growth and density level of tilapia reared in aquaponics system. The research was carried out for 40 days in April-June 2022 at the Fisheries Laboratory, Faculty of Marine Affairs and Fisheries, Udayana University, Bali. The research design used was a completely randomized design (CRD) with 3 (three) treatments and each treatment consisted of 3 replications. The stocking density used was treatment I with a stocking density of 100 fish, treatment II 150 fish, treatment III 200 fish. The results of the study concluded that different fish stocking densities had an effect on survival, weight growth and specific growth rates. The highest survival rate was found in treatment III with an average of 87.3%, the highest weight growth was found in treatment I with an average of 3.29 grams, and the highest specific growth rate was found in treatment I of 4.67%.
Water Pollution Levels in the Suwung Estuary, Bali, Based on Biological Oxygen Demand Saraswati, Ni Luh Gede Rai Ayu; Arthana, I Wayan; Risuana, I Gede Surya; Hendrawan, I Gede
BIOTROPIA Vol. 25 No. 3 (2018): BIOTROPIA Vol. 25 No. 3 December 2018
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2018.25.3.1001

Abstract

Biological Oxygen Demand (BOD) is generally used for determining water pollution levels in bodies of water. An estuary is a semi-enclosed body of water that can be polluted via land areas or rivers. This study was conducted to determine the spatial distribution of water pollution levels in the Suwung Estuary in Bali based on BOD₅ analyses conducted in January and February 2016. Samples were taken at 20 points (19 points in the Suwung Estuary and 1 outside the Suwung Estuary as a control). BOD₅ samples were then analyzed in the laboratory. Our BOD₅ analyses used the amperometric method based on the National Field Manual for the Collection of Water-Quality Data, Chapter A7. BOD₅ samples were taken during all tidal cycles, from low to high tide and high to low tide. BOD₅ values ranged from 0.84 mg/L to 9.47 mg/L during low to high tide and from 0.96 mg/L to 8.75 mg/L during high to low tide. The BOD₅ concentration in the Suwung Estuary indicated slight contamination during both tidal conditions. The spatial distribution of BOD₅ concentration was higher around cage aquacultures, rivers, the Suwung Landfill, and near the Benoa Harbour.
DAYA DUKUNG KAWASAN DAN PERSEPSI PENGUNJUNG WISATA BAHARI DI PANTAI JEMELUK, KARANGASEM, BALI Silitonga, Lidya Permata Sari; Arthana, I Wayan; Kartika, I Wayan Darya
PAPALELE (Jurnal Penelitian Sosial Ekonomi Perikanan dan Kelautan) Vol 9 No 2 (2025): PAPALELE: Jurnal Penelitian Sosial Ekonomi Perikanan dan Kelautan
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/papalele.2025.9.2.140

Abstract

This study aims to examine the carrying capacity of the area as well as visitor perceptions of marine tourism activities at Jemeluk Beach, Karangasem, Bali, as a basis for sustainable tourism management. Data collection was carried out from late September to late October 2023 using quantitative and qualitative descriptive approaches, with primary data obtained through observations, interviews, and questionnaires, and secondary data gathered from literature and related institutions. The carrying capacity analysis was conducted by considering the extent of the usable area and the duration of visitor activities, while visitor perceptions were evaluated using the four main components of tourism—attraction, accessibility, amenities, and ancillary services (4A)—measured with the Likert Scale. The results showed that beach recreation has a carrying capacity of 44 people/day, snorkeling 385 people/day, and diving 181 people/day, with a total carrying capacity of 610 people/day. Overall, visitors’ perceptions of attractions were classified as good, particularly for snorkeling and diving, which were appreciated due to the diversity of coral reefs and clear water conditions. Accessibility, amenities, and ancillary services were assessed as adequate, although several aspects such as road conditions, availability of worship facilities, and information centers still require improvement. These findings are expected to serve as valuable input for tourism managers and local government in enhancing service quality and ensuring sustainable utilization of natural resources at Jemeluk Beach.
Co-Authors Aida Sartimbul Defri Yona Dwi Puspa Arini Dwikasari, Ida Ayu Indira Erfan Rohadi Feni Iranawati, Feni Gde Raka Angga Kartika Hendiari, I Gusti Ayu Diah I Gede Hendrawan I Wayan Nuarsa Ida Bagus Windia Adnyana Irania, Khadijah Julihartadi, I Gede Dwian Julyantoro, Pande Gde Sasmita Kartika, I Wayan Darya Krisnati Dewi, Ni Putu Ayustin Kumbara, A A Ngurah Anom Manurung, Elina Ni Luh Watiniasih Ni Made Ernawati, Ni Made Nurul Muslihah Puspitha, Ni Luh Putu Ria Risuana, I Gede Surya Saraswati, Ni Luh Gede Rai Ayu Sari, Putu Dewi Purnama Silitonga, Lidya Permata Sari Suryawan Wiranatha, Agung Susanto, Raden Dwi Sutrisnawati, Eka Ari Takahiro Osawa Tamaela, Miguel Jeremy Amadeus Utama, I Putu Wira Widodo S Pranowo Winata, Victor Adi