Article Per Year (5 Year)
p-Index From 2020 - 2025
2.33
P-Index
This Author published in this journals
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

Published : 13 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 13 Documents
Search

 1   2 
Assessing lake shoreline change and prediction for 2030 by physical drivers: A Case Study from Lake Batur, Batur UNESCO Global Geopark, Bali Utama, I Putu Wira; Arthana, I Wayan; Nuarsa, I Wayan
International Journal of Environment and Geosciences Vol 5 No 1 (2024): International Journal of Environment and Geosciences
Publisher : Graduate Study of Environmental Sciences, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ijeg.2024.v05.i01.p02

Abstract

Over ten years, the water level of Lake Batur has increased. Agriculture area and settlements around Lake Batur are threatened by rising water level. This study aims to analyze the shoreline change of Lake Batur, located in the Batur UNESCO Global Geopark (BUGG), during the period of 2007 – 2018 and design a prediction for 2030. Understanding the shoreline change is very important for lake management and planning. Shoreline changes were analyzed in Geographic Information System (GIS) application. The data were obtained based on Remote Sensing (RS) data, Landsat ETM+ imagery on September 24, 2007, and Landsat OLI imagery on October 24th, 2018. Predictions of lake shoreline in 2030 result from modelling by integrating ASTER-GDEM V2 data, lake water level data for 2007–2018, annual average rainfall data for 2007–2018, and bathymetry data for 2013 and 2015. The results of the satellite imagery analysis show that there has been a change in the length of the shoreline, which has increased from 20.47 km in 2007 to 21.28 km (3.96%) in 2018. The lake surface area changed from 15.34 km2 in 2007 to 16.16 km2 in 2018 (5.35%). The prediction of lake shoreline changes in 2030 showed that Lake Batur will increase to 26.90 km (26.41%), and lake surface area is predicted to increase by 17.67 km2 (9.34%) from 2018. This is because of the morphological change of Lake Bottom.
IDENTIFIKASI MAKROZOOBENTOS SEBAGAI BIOINDIKATOR KUALITAS PERAIRAN DI PANTAI TELUK BENOA, BADUNG Sutrisnawati, Eka Ari; Arthana, I Wayan; Windia Adnyana, Ida Bagus
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 17 No 2 (2023)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/EJES.2023.v17.i02.p05

Abstract

Utilization of coastal waters for aquaculture activities or for other activities provides positive value for human welfare but can also provide the potential for reducing water quality. The decline in environmental quality can be seen from changes in components such as biology, chemistry, and beach physics. Changes in chemical and physical components cause sediment to decrease, which will affect the life of marine biotas, such as the community structure, especially the slow-moving and relatively settled biota on the bottom of the waters (macrozoobenthos). Macrozoobenthos are very appropriate to be used as an indicator of changes in water quality due to their benthic nature which is relatively silent or has low mobility so it is strongly influenced by the environment. The purpose of the study was to determine the structure of the macrozoobenthos community and the condition of seawater quality. There were 25 species of gastropods and 3 other classes. The macrozoobenthos species diversity index on the Benoa Bay Coast showed a moderate level of diversity with the highest value of 2.4576. The uniformity index at each station ranges from 0.0894 – 0.5337. The value of the dominance index ranges between 0.000004-0.7656. Based on the relative abundance, the macrobenthos community is dominated by the Gastropod class. The temperature values ??at each station were relatively the same, ranging from 29.3°C– 30.8°C, and the pH was in accordance with quality standards for macrozoobenthos growth. Some indicators of water quality are still below the quality standard threshold, but the concentration of phosphate (PO4) at all locations is already above the predetermined quality standard of 0.015 mg/L?. Keyword: Macrozoobenthos; Bioindicator; Benoa Bay; Bali
BIOMASSA DAN SIMPANAN KARBON PADA EKOSISTEM PADANG LAMUN DI WILAYAH NUSA LEMBONGAN Dwikasari, Ida Ayu Indira; Arthana, I Wayan; Watiniasih, Ni Luh
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 18 No 1 (2024)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/EJES.2024.v18.i01.p05

Abstract

The Seagrass ecosystem is one of the important ecosystems in the ocean in mitigating global warming. This research aims to examine the potential for storing carbon stocks in seagrass biomass. The purposive sampling method was used at three location points. At each location, there are 9 quadrants for a total of 27 quadrants. The types of seagrass found were Thalassia hemprichii, Cymodocea rotundata, Enhalus acoroides, Halodule uninervis, Halophila ovalis, Halodule pinifolia with moderate diversity and moderate community stability. Seagrass conditions are relatively protected between the coast and coral reefs with the highest average density of 225 ind/m2. The type of seagrass with the highest density is Thalassia hemprichii. The types of substrates are sand, coral rubble, and sandy mud. The carbon stock in the Lembongan Beach area has an area of ??89.46 hectares of seagrass beds. Around 56.32% or 3,21 tons of carbon were stored as the bottom carbon stock of the substrate and 43.67% or 2,49 tons of carbon were stored as the top carbon stock of the substrate. Keywords: Thalassia Hemprichii, Seagrass, Substate, Global Warming
MODEL SISTEM DINAMIK UNTUK KEBERLANJUTAN DANAU BATUR, BATUR UNESCO GLOBAL GEOPARK, BALI Utama, I Putu Wira; Arthana, I Wayan; Nuarsa, I Wayan; Suryawan Wiranatha, Agung
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 18 No 1 (2024)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/EJES.2024.v18.i01.p01

Abstract

This research aims to analyze the best scenario for conserving Lake Batur, Batur UNESCO Global Geopark (BUGG), Bali. Using the system dynamics method, key factors in the management of Lake Batur can be identified. Based on modeling results, it is known that the sustainability of Lake Batur is strongly influenced by aspects of land use, the environment, the economy, and the social culture of the community. The main leverage factors in supporting the preservation of Lake Batur are law enforcement and supervision, government assistance, as well as training and outreach to the community. The analysis of the sensitivity value of the optimistic/moderate ratio shows that the optimistic scenario is the best option to reduce the lake pollution index to 0.86 (still below the 1 threshold). Increasing community income per capita in this area in 2045 is estimated to reach Rp87.992.747,76/year, with predictions of 9,312 floating net cage plots owned by 2,592 entrepreneurs. The predicted number of plots is 14.90 ha, which is still below 1% of the area of Lake Batur. Keywords: System Dynamics; Sustainability; Lake Batur; BUGG
KELIMPAHAN MAKRO DEBRIS DI EKOSISTEM MANGROVE MUARA TUKAD MATI, BALI Julihartadi, I Gede Dwian; Arthana, I Wayan; Ernawati, Ni Made
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 18 No 1 (2024)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/EJES.2024.v18.i01.p11

Abstract

Macro debris refers to waste materials ranging in size from 2.5 cm to 1 m, commonly found both on the water's surface and on the seabed. The accumulation of such large debris in coastal and marine environments can lead to various consequences, including disturbances to ecosystem stability and threats to the survival of organisms. Additionally, it diminishes the aesthetic quality of the environment. Among the ecosystems most susceptible to becoming repositories for this waste is the mangrove ecosystem. This study aims to quantify the amount, types, and abundance of macro debris scattered in the Tukad Mati Estuary Mangrove Area, Badung Regency, Bali. The research methodology involved several steps, starting with the selection of research stations. Transects measuring 5 x 5 meters were established. Within these designated areas, samples of macro debris were collected and categorized according to their composition, including materials such as plastic, fabric, glass, metal, and rubber. The results revealed that the total mass of macro debris collected in the Tukad Mati Estuary area amounted to 42,630 grams. The types of macro debris found in the Tukad Mati Estuary mangrove ecosystem consist of plastic, fabric, glass, metal, and rubber. Based on their quantity, the composition of macro debris is dominated by plastic at 87.02%, followed by fabric at 4.24%, rubber at 4.17%, glass at 2.67%, and metal being the least at 1.89%. Based on their weight, the composition of macro debris is highest for plastic at 32.33%, followed by rubber at 27.29%, fabric at 20.23%, glass at 14.36%, and metal being the lowest at 5.78%. The abundance of macro debris in the Tukad Mati Estuary mangrove ecosystem ranges from 0.85 items/m² to 10.68 items/m². Keywords: Marine Debris; Pollution; Tukad Mati Estuary; Mangrove
Aspek Ekologi dan Sosial Budaya untuk Keberlanjutan Usaha Budidaya Rumput Laut di Nusa Lembongan Manurung, Elina; Arthana, I Wayan; Kumbara, A A Ngurah Anom
Akuatika Indonesia Vol 9, No 2 (2024): Jurnal Akuatika Indonesia (JAkI)
Publisher : Direktorat Sumber Daya Akademik dan Perpustakaan Universitas Padjadjaran, Grha. Kandaga (P

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jaki.v9i2.46687

Abstract

Nusa Lembongan merupakan salah satu sentra penghasil rumput laut, namun padatahun 2017 produksinya mengalami penurunan sebesar akibat penyakit ice-ice, bibit yang kurang baik, harga jual rendah, dan peralihan profesi petani ke pariwisata. Selama pariwisata di Pulau Bali menurun akibat pandemi Covid-19,masyarakat kembali menggeluti budidaya rumput laut sebagai mata pencarian.. Penelitian ini bertujuan untuk melihat keterkaitan aspek ekologi dan sosial budaya usaha rumput laut agar berkelanjutan. Penelitian dilakukan di Nusa Lembongan, Kawasan Konservasi Perairan (KKP) Nusa Penida, Provinsi Bali, dengan metode kuantitatif dan kualitatif. Data yang diamati adalah laju pertumbuhan dan parameter kualitas air yaitu suhu, pH, salinitas, oksigen terlarut, kedalaman dan kecepatan arus serta data sosial budaya melalui wawancara dan observasi. Penelitian dimulai November 2022-Januari 2023. Hasil yang didapat rata-rata laju pertumbuhan mutlak rumput laut tertinggi  173 gram dan yang terendah sebesar 106 gram, produksi rumput laut tertinggi sebesar 1.376 gr/m dan rata-rata laju pertumbuhan harian spesifik berkisar antara 1,98-4,53% perhari. Parameter kualitas air suhu sebesar 29-31,4 °C; untuk pH 7,5-8,3; salinitas berkisar 29-31,5 ppt - oksigen terlarut 6,47-7,45 mg/L; kedalaman 0,2-0,9 m; dan kecepatan arus 0,1-0,3 m/s. Responden 20 orang pelaku pembudidaya, pendapatan dalam 1 kali budidaya berkisar antara Rp 5.000.000,00–15.000.000,00. Perairan Nusa Lembongan secara ekologi memenuhi syarat untuk usaha budidaya rumput laut berkelanjutan sebagai mata pencarian utama masyarakat Nusa Lembongan, dengan kearifan lokal Nyepi Segara. Budidaya rumput laut di Nusa Lembongan merupakan warisan budaya dan tradisi yang diwariskan dari satu generasi ke generasi dari tahap persiapan lokasi, penanaman, perawatan dan panen.
Pengaruh Perbedaan Salinitas terhadap Pertumbuhan dan Biomassa Mikroalga Chlorella vulgaris Tamaela, Miguel Jeremy Amadeus; Arthana, I Wayan; Puspitha, Ni Luh Putu Ria
ULIL ALBAB : Jurnal Ilmiah Multidisiplin Vol. 4 No. 1: Desember 2024
Publisher : CV. Ulil Albab Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/jim.v4i1.6353

Abstract

Kebutuhan energi adalah krisis yang perlu diatasi, dengan gerakan diversifikasi energi dengan mengembangkan sumber energi baru ramah lingkungan. Bahan multifungsi penghasil energi terbarukan alternatif yang cukup potensial adalah mikroalga dikarenakan prospektif dan tidak bersaing dengan produk pangan lain. Tujuan penelitian untuk mendapatkan salinitas yang efektif untuk memaksimalkan pertumbuhan mikroalga Chlorella vulgaris dalam kultur. Metode penelitian menggunakan rancangan acak lengkap dengan kultur tertutup dan memakai tiga tingkatan salinitas berbeda pada 30 ppt, 33 ppt dan 36 ppt, dimana pengamatan pertumbuhan dan biomassa kultur dilakukan selama tujuh hari. Pertumbuhan mikroalga pada salinitas kontrol 30 ppt berjumlah 214,2 x 104 sel/ml. Perlakuan salinitas 33 ppt berjumlah 224,2 x 104 sel/ml. Perlakuan salinitas 36 ppt berjumlah 256,2 x 104 sel/ml. Pada pengulangan variabel salinitas 30 ppt terdapat mean berat biomassa sebesar 0,1162±0,0095 g/l. Pada pengulangan variabel salinitas 33 ppt didapat berat mean biomassa sebesar 0,1411±0,0096 g/l. Pada pengulangan variabel salinitas 36 ppt didapatkan berat mean biomassa sebesar 0,1875±0,00984 g/l. Perbedaan salinitas terhadap pertumbuhan dan biomassa Chlorella vulgaris memberikan pengaruh yang signifikan terhadap jumlah sel dan biomassa, dimana hasil pertumbuhan maksimal diperoleh di perlakuan salinitas 36 ppt. Salinitas 36 ppt adalah salinitas yang efektif memberikan peningkatan pertumbuhan dan menghasilkan biomassa mikroalga Chlorella vulgaris yang maksimal.
The Genetic Diversity of Bali Sardinella (Sardinella lemuru) Caught at Bali Strait and Its Possible Relation to The Ocean Circulation Sartimbul, Aida; Hendiari, I Gusti Ayu Diah; Arthana, I Wayan; Kartika, Gde Raka Angga; Winata, Victor Adi; Pranowo, Widodo Setiyo; Susanto, Raden Dwi; Rohadi, Erfan; Muslihah, Nurul; Yona, Defri; Iranawati, Feni
Jurnal Ilmiah Perikanan dan Kelautan Vol. 17 No. 2 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v17i2.56670

Abstract

Graphical Abstract Highlight Research A low sequence divergence of lemuru between Bali Strait and the northern latitude. S. lemuru migration route through ITF will maintain its nucleotide variation. The high haplotype diversity of lemuru is a testament to its adaptability. S. lemuru's high haplotype diversity supports their stock recovery in the Bali Strait. Two sardine species are morphologically and genetically highly distinct, even though they prefer overlapping water mass conditions from each other. Abstract Sardinella lemuru is known as the native pelagic fish of the Bali Strait. However, its presence has recently become challenging to find. This study aimed to validate S. lemuru using molecular taxonomy and link it to water circulations for sustainable management. It is the first study of relatively complete sequence data on S. lemuru in the Bali Strait. A total of 47 sequences were amplified using the control region gene of mitochondrial DNA. Other S. lemuru (n = 4) and Amblygaster sirm (n = 12) sequences were retrieved from GenBank. Low sequence divergence is observed in clade-1 of S. lemuru across the Bali Strait, Manado-Sulawesi, and Kudat-Malaysia. This is probably due to its migration using the main Indonesian ThroughFlow (ITF). There is an evolutionary divergence between two groups of S. lemurs, measuring 35.3%±4.1. The first signs of these cryptic groups were found at Canggu and Prigi, with 87 base-pair differences between the two groups. This study also presents strong evidence that A. sirm prefers overlapping water mass conditions with S. lemuru in the Bali Strait but is morphologically and genetically distinct. Notably, three samples of A. sirm in Kedonganan-Bali are clustered with other A. sirm locations passed by the primary and secondary South China Sea throughflow. The high genetic diversity of S. lemuru among Bali Strait sites demonstrates its adaptive ability, with scattered single-frequency haplotypes. The adaptive ability traits of S. lemuru support its stock recovery. The stock recovery recommendation is based on finding S. lemuru’s adaptive traits within their populations in suitable habitats and climatic conditions
Keragaman genetik ikan lemuru (Sardinella lemuru) di wilayah perairan Indonesia Hendiari, I Gusti Ayu Diah; Sartimbul, Aida; Arthana, I Wayan; Kartika, Gde Raka Angga
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Aquatic Sciences Journal, Vol. 7: No. 1 (April, 2020)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v7i1.2405

Abstract

Ikan Lemuru (Sardinella lemuru) merupakan komoditas perikanan pelagis yang sangat bernilai ekonomis dikalangan masyarakat Indonesia. Ikan Lemuru memiliki kelebihan yaitu keberadaannya yang berlimpah di perairan lau Indonesia, harganya yang sangat murah serta kandungan omega-3 yang sangat baik untuk tubuh. Kebutuhan akan ikan lemuru (Sardinella lemuru) yang tinggi menyebabkan tingginya angka penangkapan komoditas ini di perairain, sehingga dapat menyebabkan resiko penurunan jumlah populasi dialam. Pengelolaan yang tepat pada komoditas ini tentunya diperlukan akan dapat meminimalisir resiko yang dapat terjadi. Pengelolaan akan dapat terlaksana dengan tepat apabila berdasarkan atas data informasi yang memadai, salah satunya adalah informasi mengenai keragaman genetiknya. Kajian ini mengumpulkan pustaka dari penelitian terdahulu mengenai keragaman genetik ikan lemuru (Sardinella lemuru) di Wilayah Perairan Indonesia untuk dapat memberikan gambaran mengenai keragaman Ikan Lemuru dari segi genetiknya. Nilai keragaman genetik dilihat dari nilai keragaman haplotipe (Hd) karena keduanya memiliki kolerasi yang positif untuk menggambarkan keragaman genetik dari suatu komoditas. Hasil kajian memperlihatkan nilai keragaman genetik ikan lemuru (Sardinella lemuru) di Wilayah Perairan Indonesia memiliki nilai yang termasuk kategori tinggi. Hasil ini menggambarkan bahwa ditengah tingginya kegiatan penangkapan, ikan lemuru (Sardinella lemuru) secara genetik masih memiliki keragaman yang tinggi sehingga dimungkinkan komoditas Ikan Lemuru memiliki adaptasi yang tinggi terhadap kondisi lingkungan.Kata kunci: Sardinella lemuru, keragaman genetik, keragaman haplotipe Sardinella lemuru is pelagic commodities that have economic values for the Indonesian. S. lemuru has some of the major advantages, such as much population on Indonesian marine, low price, and has Omega-3 for the human body. The high demands of Lemuru Fish cause a high rate of cached, that can cause the risk of population degradation. Proper management of these commodities are needed to decrease the risk impact, that can be done rightly based on the equal value of information, and one of them is genetic diversity. This research compiles the recent researches about the genetic diversity of the Sardinella lemuru in Indonesian to get the explanation about Lemuru Fish diversity. The value of genetic diversity observed is based on the diversity value of Haplotype (Hd), because these two values have a positive correlation to make a whole representation from a commodity. The results of this review show that the genetic diversity of Lemuru Fish on Indonesian marine territorial has the high-value category. These results explain that in the high activities of fishing, Lemuru Fish genetically still have a high diversity that leads to the conclusion Lemuru Fish commodities has a high-level ability to adapt from environmental conditions.Keywords: Sardinella lemuru; genetic diversity; haplotype diversity 
KESESUAIAN EKOLOGI BUDIDAYA UDANG VANAME (Litopenaeus vannamei) PADA TAMBAK SEMI INTENSIF DI KECAMATAN GEROKGAK, BALI Sari, Putu Dewi Purnama; Arthana, I Wayan; Julyantoro, Pande Gde Sasmita
Jurnal Riset Akuakultur Vol 17, No 2 (2022): (Juni) 2022
Publisher : Politeknik Kelautan dan Perikanan Jembrana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/jra.17.2.2022.121-132

Abstract

Kecamatan Gerokgak menjadi salah satu pusat perikanan budidaya, khususnya budidaya udang vaname. Tujuan dari penelitian ini adalah untuk menentukan parameter kesesuaian ekologi pada kegiatan budidaya udang vaname di Kecamatan Gerokgak, Bali. Penelitian dilaksanakan di enam petak tambak yang berada di tiga desa, yaitu Desa Gerokgak, Patas, dan Sanggalangit mulai bulan Oktober 2021 hingga Januari 2022. Parameter ekologi yang diamati adalah suhu, pH, salinitas, oksigen terlarut, kecerahan, alkalinitas, amonia, bahan organik total, nitrat, nitrit, fosfat, kelimpahan plankton, bakteri heterotrofik, dan Vibrio. Data dianalisis menggunakan matriks kesesuaian dan dihitung indeks kesesuaiannya. Hasil penelitian menunjukkan suhu pagi sebesar 24,0-26,8°C; suhu sore 27,0-30,4°C; pH 7,3-8,1; salinitas 6-33 ppt; oksigen terlarut 7,7-7,9 mg L-1; kecerahan 38,5-44,6 cm; alkalinitas 205,9-212,6 mg L-1; amonia 0,28-0,48 mg L-1; bahan organik total 30-33 mg L-1; nitrat 0,2-0,3 mg L-1; nitrit 0,01-0,02 mg L-1; fosfat 0,53-0,66 mg L-1; kelimpahan plankton 117.909-200.764 ind L-1; bakteri heterotrofik 1,8x105-2,4x105 CFU mL-1; dan Vibrio sebesar 2.776-3.620 CFU mL-1. Semua tambak menunjukkan tingkat sangat sesuai untuk budidaya udang vaname. Nilai indeks kesesuaian tertinggi terdapat pada petak Desa Sanggalangit 2 (95,9%), diikuti oleh Desa Sanggalangit 1 dan Desa Patas 1 (93,8%), sementara nilai Desa Patas 2, Desa Gerokgak 1dan Desa Gerokgak 2 mendapatkan nilai indeks kesesuaian yang terendah (91,8%). Penelitian ini menyimpulkan bahwa seluruh petak yang diamati termasuk dalam tingkat kesesuaian ekologi Sangat Sesuai untuk budidaya udang vaname.Gerokgak area is the primary coastal aquaculture center in North Bali in which whiteleg shrimp farming has grown rapidly in the past decade. This study aimed to determine the ecological suitability of semi intensive whiteleg shrimp farming in the area. The research was carried out in six different ponds in three villages (Gerokgak, Patas, and Sanggalangit Villages) from October 2021 to January 2022. The evaluation parameters consist of temperature, pH, salinity, dissolved oxygen, transparency, alkalinity, ammonia, total organic matter, nitrate, nitrite, phosphate, plankton abundance, heterotroph bacteria count, and Vibrio count. The collected data were arranged into suitability matrix from which the suitability indexes were calculated. The morning temperature was 24.0-26.8°C; afternoon temperature 27.0-30.4°C; pH 7.3-8.1; salinity 26-33 ppt; dissolved oxygen 7.7-7.9 mg L-1; brightness 38.5-44.6 cm; alkalinity 205.9-212.6 mg L-1; ammonia 0.28-0.48 mg L-1; total organic matter 30-33 mg L-1; nitrate 0.2-0.3 mg L-1; nitrite 0.01-0.02 mg L-1; phosphate 0.53-0.66 mg L-1; plankton abundance 117,909-200,764 ind L-1; heterotrophic bacteria 1.8x105-2.4x105 CFU mL-1; and Vibrio 2,776–3,620 CFU mL-1. The highest suitability index value was scored by Sanggalangit Village pond 2 (95.9%), followed by Sanggalangit Village pond 1 and Patas Village pond 1 (93.8%), while Patas Village pond 2, Gerokgak Village pond 1, and Gerokgak Village pond 2 had the lowest suitability index (91.8%). This study concludes that all observed ponds are categorized as highly ecologically suitable for whiteleg shrimp culture.
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