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THE CHARACTERISTIC OF WATER QUALITY AT BATUR LAKE, KINTAMANI DISTRIC, BALI PROVINCE I Wayan Arthana
Bumi Lestari Journal of Environment Vol 11 No 1 (2011)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

Batur Lake located at Kintamani district, Bangli regency is the biggest lake in Bali that is very important as water stocking for Bali area. Collecting samples at 50 substations was done from June up to October 2009. Temperature value at Batur Lake varied of 23 °C - 25 °C with average of 23.88 °C. The water clarity was around 1.58 - 2.90 meter with the average of 2.32 meter. The average value of water quality of BOD5 and COD were 3.817 ppm and 6.333 ppm respectively. The average content of ammonia was 0.4545 ppm and for Sulfide was 0.0009 ppm. The nutrient content in Batur Lake is that nitrate value varied of 0.0174 - 3.6070 ppm with average of 1.1498 ppm. Phosphate content was from no detection up to 0.3610 ppm with the average of 0.1242 ppm. Heavy metals, the average content of Cd, Pb, Cu and Fe were 0.0038 ppm, 0.0023 ppm, 0.0055 ppm and 0.0428 ppm respectively. There is a strong positive correlation between COD and BOD5 that the higher content of the COD the higher BOD5 content as well with correlation value of R2 = 0.927. The ratio value between COD and BOD5 (COD/ BOD5) varies of 1.061 – 12.163 with the average value of 2.492 ± 1.909.
Pengaruh Pemberian Pakan Berbeda Pada Laju Pertumbuhan Ikan Lele Dumbo (Clarias gariepinus) I Putu Eka Mahendra; I Wayan Arthana; Ayu Putu Wiweka Krisna Dewi
Bumi Lestari Journal of Environment Vol 22 No 1 (2022)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/blje.2022.v22.i01.p02

Abstract

Aquaculture is one of the efforts made to increase fishery production at present and in the future. One type of freshwater aquaculture that is a leading commodity and is widely cultivated by the community is catfish. Different feeding effect on the growth of African catfish fry. This study used 3 different treatments, A feeding 100% silk worms, B feeding 100% maggot and the last C feeding 50% silk worms and 50% maggot.This study aims to determine the specific growth rate, feed conversion ratio (FCR) and Survival rate (SR) in catfish fry fed different feeds of silk worms and BSF maggots Based on the results of research for 30 days from March 2021 - April 2021, the specific growth rate got the highest results, namely in treatment A, namely feeding 100% silk worms and the lowest was in feeding treatment with 100% maggot BSF. According to the treatment given, the results of the growth rate obtained were treatment A of 4.52%, treatment B of 4.13%, treatment C of 4.39%. The lowest FCR results were found in the feeding of 100% silk worms and the highest in the treatment of feeding 100%. The results of the Feeding Conversion Ratio (FCR) or the feed conversion ratio obtained were treatment A which was 1.12, treatment B was 1.68, treatment C of 1.18. In the SR parameter, the highest results were obtained in treatment A, namely feeding 100% silk worms and the lowest in treatment B, namely feeding 100% maggot BSF. The results of the survival rate in this study were 79% in treatment A, treatment B 75%, treatment C 70%.
ANALISIS KUALITAS FISIKA PERAIRAN BERDASARKAN NILAI PADATAN TERSUSPENSI DAN KEKERUHAN PERAIRAN DI BENDUNGAN TELAGA TUNJUNG DESA TIMPAG, KECAMATAN KERAMBITAN, KABUPATEN TABANAN – BALI Dewa Gde Tri Bodhi Saputra; I Wayan Arthana; Made Ayu Pratiwi
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 10 No 2 (2016)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (249.032 KB) | DOI: 10.24843/EJES.2016.v10.i02.p08

Abstract

Telaga Tunjung reservoir has a function for irrigation for around 1.335 Ha irrigation land. Beside, also for supplying clean water to the household in 6 village in Selemadeg District, 2 village in Kerambitan District and 1 village in Tabanan District. The clean water also used in Soka tourism area and in Berembeng village. Telaga Tunjung reservoir also used for water resources conservation. This research aim to know total suspended solid at Telaga Tunjung reservoir as a reference for reservoir management. The method of this research were survey method and laboratory analyzing. The results of TSS in Telaga Tunjung reservoir were 2.667-91.278 mg/L. The lowest value of TSS was in January and the highest in February. The condition of TSS was in January (no rain). The difference between inlet and outlet was 19.051 mg/L or 61,22 %. In the downstream of reservoir, the TSS was getting lower. In February the differences between inlet and outlet was 53.315 mg/L or 140,43 %. The TSS at inlet, upstream and outlet in February increased significantly compared that in January and March. In February there was some location that exceed the second class water standard of central Government Regulation Number 82 in 2001 and Bali’s Governor Regulation number 8 in 2007.
STUDI KUALITAS LINGKUNGAN PERAIRAN DI DAERAH BUDIDAYA PERIKANAN LAUT DI TELUK KAPING DAN TELUK PEGAMETAN, BALI Bejo Slamet; I Wayan Arthana; I W. Budiarsa Suyasa
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 3 No 1
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

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Abstract

The purpose of this study was to know the coastal environmental quality of Kaping and Pegametan Bay coastal area. Thestudy was conducted from 14 stations with 3 replicates of water sampling and 5 replicates of makrozoobenthos sampling.The result showed that water quality namely TSS, DO, NH3 and BOD5 were still in line criterion stated by office of KLH(2004). About 49 species of makrozoobenthos were examined, with abundance of makrozoobenthos was 58-209 ind./ 1,125 cm2 anddiversity indeks was 1,56-2,91. The result on the integrated water quality analyses showed that the water quality all of station wasclassified to light pollution.This result showed that the enviromnental of Kaping Bay dan Pegametan Bay coastal area was competent for mariculturealthough lower compered with control. For the continuity of fisheries aquaculture in Kaping Bay dan Pegametan Bay, Long termeffort in environment conservation is needed better stretegy and action in an integrated and sustainable manners.
KESESUAIAN WILAYAH PERLINDUNGAN TERUMBU KARANG PADA DESA – DESA PESISIR DI KECAMATAN NUSA PENIDA I Dewa Gede Warmadewa; I Wayan Arthana; Ida Ayu Astarini
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 8 No 1 (2014)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

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Abstract

Conserving natural resources are a necessity to ensure the sustainability of it is utilization. Throughthe determination of the suitability of the coastal villages on Nusa Penida as coral reef protected areas, it isexpected that all activities use of coastal resources will sustainable. The results showed Nusa Penida totalarea of coral reef ecosystems is 1.419 ha with fringing reef types. Based on live Nusa Penida’s coral reefcover conditions at a depth of 3 meters categorized as good condition (74%), for a depth of 10 meters theaverage condition of live coral cover categorized as good condition (64%). Depth of 10 meters showed interactionscoral communities are more stable than 3 meters. Suitability protected area of coral reefs was conducted in12 villages that have reef condition data at a depth of 10 meters. From 12 villages studied, 9 villages havesuitability as a protected area of coral reefs namely the Village of Pajukutan, Suana, Batu Nunggul, BatuMadeg, Sakti, Batu Kandik, Sekartaji, Toya Pakeh and Jungut Batu. From those villages, 4 villages have notake zone recomendation areas namely the Village of Jungut Batu, Toyapakeh, Batu Nunggul and Suana
STUDY OF OCEAN CIRCULATION IN INDONESIAN ARCHIPELAGO SEA USING THREE DIMENSIONAL OCEAN MODEL I Dewa Nym. Nurweda P.,; Takahiro Osawa; I Wayan Arthana
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 4 No 2
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

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The Regional Ocean Modeling System (ROMS) was used to simulate the Indonesian Archipelago Sea current and temperature with two different vertical mixing schemes. One corresponds to the newly developed K-Profile Parameterization (KPP) scheme and the other is adapted from the stability frequency of Brunt-Vaisala Frequency mixing (BVF). It is found that, both of schemes produce reasonably realistic sea surface temperature (SST); however, the root mean square error (RMSE) values from the BVF vertical mixing were less than the KPP vertical mixing. The RMSE values from the BVF vertical mixing at northwest and southeast monsoons can be reduced down to 5.1607E-01 0C and 5.7639E-01 0C respectively. These validation results reveal that accuracy of the BVF vertical mixing is better than the KPP vertical mixing.The model results based on the BVF vertical mixing scheme show that the direction of Java Sea, Karimata and Sunda Straits surface current are strongly affected by the zonal wind system. The direction of surface current was change following the monsoonal wind system. On the other hand, the Makasar Strait surface current tend to flow southward throughout the year with annual variations in transport are related dynamically to the monsoon winds. These southward surface currents are known as Indonesian Through Flow (ITF) and it is governed by strong pressure gradient from the Pacific to the Indian Oceans. The signals of El Nino 2002 event also can be detected by the model results. It recognized that the strong Equatorial Counter Current flows to eastward to the central part of the Pacific Ocean. The Makasar Strait surface current was stronger than usual but the Karimata Strait surface current was weaker during this period.
THE VULNERABILITY STUDY OF LEMURU (SARDINELLA LEMURU) FISH RESOURCES SUSTAINABILITY IN BALI STRAIT IN CORELLATION WITH ENSO AND IOD Candra Saputra; I Wayan Arthana; I Gede Hendrawan
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 11 No 2 (2017)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (261.038 KB) | DOI: 10.24843/EJES.2017.v11.i02.p02

Abstract

The aim of this research is to know the relationship between lemuru fish catch to Sea Surface Temperature (SST), El-Nino Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD) phenomenon in Bali Strait. The results showed, that in the period 2007 – 2016. fluctuations of catches lemuru tends to decline. Sea Surface Temperature (SST) distribution with the lowest temperature 25,28oC at 24,53oC - 27,16oC and the highest temperature is 29,31oC in the range of 28,730C – 30,490C. The lowest temperature occurred in July - September while the highest temperature occurred in January - April. Based on the calculation there is a linkage and relationship between catch and SST as shown on the value of determination and correlation reached 50,0% and 70,73%. Most of the catches occurred in the west season and then the transition II, transition I and East Season. The relationship of ENSO phenomenon to the catch during the El-Nino phase of lemuru catch will increase while in the phase of La-Nina the catch of lemuru will decrease, because time of El-Nino phase of the sea surface temperature (SST) relative low which results in the chlorophyll-a mean case which is a food sources of lemuru fish. Based on Trenberth's theory, (1997), the rise and fall of the ENSO Index of less than six months is not stated in ENSO. From the calculation results during the research of 2007 - 2016 happened three times ENSO phenomenon that is in 2009, 2010 and 2015. At the time of the IOD phenomenon, the IOD (+) phase will result in a decrease in catch while the normal IOD phase and (-) will increase the catch. From the results of this study can also be observed, in the year 2007 - 2011 phenomenon ENSO and IOD have a strong influence on the catch while in the year 2012 - 2016 the influence of the phenomenon of ENSO and IOD has no strong influence caused by the quantity of lemuru fish that have been over exploitation that resulted in the current Bali Strait on Over Fishing status. Keywords : Fish Catch; El-Nino Southern Oscillation (ENSO); Indian Ocean Dipole (IOD)
KINERJA PENGELOLAAN LIMBAH HOTEL PESERTA PROPER DAN NON PROPER DI KABUPATEN BADUNG, PROVINSI BALI Putri Nilakandi Perdanawati Pitoyo; I Wayan Arthana; I Made Sudarma
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 10 No 1 (2016)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (153.88 KB) | DOI: 10.24843/EJES.2016.v10.i01.p06

Abstract

Bali tourism development can lead to positive and negative impacts that threatening environmental sustainability. This research evaluates the hotel performance of the waste management that includes management of waste water, emission, hazardous, and solid waste by hotel that participate at PROPER and non PROPER. Research using qualitative descriptive method. Not all of non PROPER doing test on waste water quality, chimney emissions quality, an inventory of hazardous waste and solid waste sorting. Wastewater discharge of PROPER hotels ranged from 290.9 to 571.8 m3/day and non PROPER ranged from 8.4 to 98.1 m3/day with NH3 parameter values that exceed the quality standards. The quality of chimney emissions were still below the quality standard. The volume of the hazardous waste of PROPER hotels ranged from 66.1 to 181.9 kg/month and non PROPER ranged from 5.003 to 103.42 kg/month. Hazardous waste from the PROPER hotel which has been stored in the TPS hazardous waste. The volume of the solid waste of PROPER hotel ranged from 342.34 to 684.54 kg/day and non PROPER ranged from 4.83 to 181.51 kg/day. The PROPER and non PROPER hotel not sort the solid waste. The hotel performance in term of wastewater management, emission, hazardous, and solid waste is better at the PROPER hotel compared to non PROPER participants.
INVENTARISASI EMISI SUMBER BERGERAK DARI TRANSPORTASI LAUT (NON-ROAD) DI WILAYAH PESISIR KOTA DENPASAR Desak Putu Risky V.A; I Wayan Arthana; I Wayan Budiarsa Suyasa
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 9 No 1 (2015)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (260.913 KB) | DOI: 10.24843/EJES.2015.v09.i01.p02

Abstract

The development of marine transportation in Denpasar City followed by increasing number of visiting tourists who came to Denpasar City. This situation will contribute to air pollution problems. The purpose of this study was to determine the emission load produced by sea transportation in Denpasar City and the distribution of emissions gases such as NOx, SOx, HC, PM10, CO and CO2.Emission load calculations based on the guidelines of the EMEP Corinair Guidebook using Tier 3, which the emission factors used refer to the CORINAIR GB 2013 1.A.3.d. The results showed a total emission load from non-road mobile sources of marine transportation in the Denpasar city such as NOx is 14,583.69 tons/year, SOx by 85.49 tons/year, HC by 746.05 tons/year, PM10 at 503.53 tons/year, CO at 123,123.58 tons/year, and CO2 of 1,457,909.95 tons/year. Distribution of the source of pollutants mapped using GIS (Geographic Information System) shows that the emission load of NOx, SOx, HC and PM10 are likely identical, which mostly distributed around Benoa Port, but CO2 and CO have different patterns . The pattern of distribution of NOx, SOx, HC, and PM10 with the highest intensity follows the contours of the ships from Benoa Port. CO gas distribution pattern follows the contours of the ship from the Serangan Port and Sanur Port, CO2 gas distribution pattern almost evenly in almost all flow well from the Serangan Port, Sanur Port and Benoa Port
MODEL PENGENDALIAN PENCEMARAN AIR WADUK BATUJAI DI LOMBOK TENGAH, NUSA TENGGARA BARAT Supardiono Supardiono; I Wayan Arthana; I Wayan Sandi Adnyana; I Wayan Budiarsa Suyasa; I Nyoman Sudipa
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 15 No 1 (2021)
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.2021.v15.i01.p12

Abstract

Water quality management efforts need to be carried out in a sustainable manner to ensure that water resources are free from pollution. Water is an important component in human life, therefore the existence of water in nature must be maintained to ensure the continuity of human life. Decreasing water quality is caused by pollutant loads that enter water bodies due to human activities disposing of waste directly into the water. Batujai Reservoir is one of the vital objects for the survival of the people of Central Lombok. In an effort to control water pollution in the Batujai Reservoir, a model that is capable of managing Batujai Reservoir water is needed in a sustainable manner. The purpose of this research is to develop a model capable of managing the water in the Batujai Reservoir in a sustainable manner. The research methodology uses a quantitative approach using primary data from interviews with figures and experts as well as secondary data from literature studies and previous research data. Data analysis used the Interpretative Structural Modeling (ISM) approach. ISM is able to simplify complex relationships to be simple and form a hierarchy between existing relationships and be able to describe them in the form of system modeling. The results showed that the water pollution control model in Batujai Reservoir was carried out by involving all relevant stakeholders by placing academics, NGOs and Central Lombok Bappeda as the main drivers of program implementation and using the local wisdom approach.Keywords: pollution, control, water, model, batujai.
Co-Authors A.A. Gede Cahya Pratama Abd. Rahman As-syakur Agus Wija Atmaja Aida Sartimbul Alfi Hermawati Waskita Sari Alya Namira Anak Agung Sagung Laksmi Dewi apri i supi'i Arief Reza Fahlevi Ayu Putu Wiweka Krisna Dewi Bejo Slamet Beny Mustofa Bram Setyadji Bunga Divia Arimbi Cakranegara, Pandu Adi Candra Saputra CoK.I.M. HANDAYANI Daniel Nemba Dambe Daniel Tri Lakona Sinamo Debi Bunga Novitasari Deny Suhermawan Yusup Deptson Baringin Silaen Desak Putu Risky Vidika Apriyanthi Dewa Ayu Angga Pebriani Dewa Gde Tri Bodhi Saputra Dwi Suprapti Elok Faiqoh Endang Rustiasih Endang Wulandari Suryaningtyas Fanlia Prima Jaya Fikri Huda Falah Fina Wahyuningsih GALIH INDRAWATI Gde Raka Angga Kartika Gde Raka Angga Kartika Gede Dwi Sukmawantara Gede Pasek Sutedja Gede Surya Indrawan Gemaya Wangsa Gultom, Henry Casandra Gunawan Tarigan Gusti Ayu Manik Pradnyani Habibatus Sholihah Hanifa Miranda I.H. Putri Heidi Siddiqa Heri Prabowo Herlisa Setiarini Hikmah Nurazizah Husnayati Hartini I Dewa Gede Warmadewa I Dewa Nym. Nurweda P., I Gede Agus Isha Purusa I Gede Hendrawan I Gede Surya Risuana I Gede Wahyu Surya Wirawan I Gusti Agung Bagus Arya Pradnya Pratama I Gusti Agung Dwikhy Oka Taradhipa I Gusti Ayu Diah Hendiari I Gusti Ayu Novie Sidaningrat I Gusti Bagus Suputra I Gusti Made Sudipta I Kadek Tobing Ascahya I Ketut Swardika I Komang Dianto I Made Adi Karsa I MADE ADI PRANATHA I Made Minggu Widyantara I MADE SUDARMA I Made Suma Krisna Sravishta I Made Suwitra, I Made I Nyoman Gede Sugiartha I NYOMAN MERIT I Nyoman Sudipa I Nyoman Sumardika I Nyoman Sutama I Nyoman Sutama I Nyoman Yoga Parawangsa I Putu Eka Mahendra I Putu Yoga Pramana Putra I W BUDIARSA SUYASA I Wayan Gede Astawa Karang I Wayan Juliawan I Wayan Kasa I Wayan Restu I Wayan Sandi Adnyana I Wayan Suarna I Wayan Subawa I Wayan Wesna Astara IDA AYU ASTARINI Ida Ayu Putu Widiawati Ida Ayu Utari Dewi ida bagus adi palguna Ida Bagus Ketut Gede Kertia Ida Bagus Lampita Prabawa Ida Bagus Windia Adnyana Ifan Martin Nopem IPG ARDHANA IRMA YULIA MADJID Joko Wiryatno Josua Siagian Josua Siagian KADEK ARY ANGGRAENI KADEK ARY ANGGRENI Kartika, I Wayan Darya Karyono Karyono Khadijah Irania Kolis Pratama Komang Bayu Permana Komang Gede Pramantara Komang Lina Rosita Sugiarni Krisna Jumantara Panca Putra Letia Alda Fadilla Lisa Rosalia Prayuda Ludia Panggalo Luh Putu Diah Ananda Wijayanti Luh Putu Sudini M Alfian Pratama M. Sudiana Mahendra Made Ayu Pratiwi Made Widya Sekarbuana Mayang Utami Meta Apriliawati Sandi Miftachudin Syaiful Ma'ruf Mohammad Rizqi Mohan Budiman MOKHLAS SATIBI Mu'tasim Billah Muh. Abduh Anwar Muhammad Asir Muhammad Sawir Muhammad Yusuf Ni Desak Putu Dita Herlinawati Ni Kadek Suardiani Ni Komang Rai Widhyaningsih Ni Luh Ayu Gita Astriani Ni Luh Ayu Gita Astriani Ni Luh Gede Ambarawati Ni Luh Gede Rai Ayu Saraswati Ni Luh Made Ari Sugianthi Ni Luh Putu Citra Adriyanti Ni Luh Watiniasih Ni Made Ary Widiastiti Ni Made Ernawati, Ni Made Ni Made Putri Kartika Jati Ni Putu Ayustin Krisnati Dewi Ni Putu Bella Yuliana Dewi Ni Putu Putri Wijayanti Ni Putu Sawitri Nandari Ni Putu Vivin Nopiantari Ni Putu Wiwin Angreni Ni Wayan Desy Wahyudiati Ni Wayan Ernawati NI WAYAN FEBRIANA UTAMI Ni Wayan Indah Purnamawati Nyoman Dati Pertami Octria Vesensia Olivia Grace Brigitta Florencia Pandu Pratama Putra Putra, I Nyoman Giri Putri Eka Cahyani Putri Febrine Nainggolan Putri Nilakandi Perdanawati Pitoyo Putu Agus Arisudana Putu Ayu Irma Wirmayanti Putu Dyah Prastiti Sukma Febriany Putu Suryani . Rachmat Andi Saputra Rani Ekawaty Ranny R. Yuneni Ravita Kusuma Dewi Rifaldus Dani S.A NYOMAN PUTRI TRIANTINI Sang Ayu Indah Sukma Dewi Stephanus Tambunan Suciati - SUCIKA ARMIANI, SUCIKA Suko Ismi Supardiono Supardiono Suprabadevi Ayumayasari Saraswati Suprabadevi Ayumayasari Saraswati Suprabadevi Ayumayasari Saraswati Suprabadevi Ayumayasari Saraswati SUPRATMAN - suryawan, Gusti Bagus Susumu Kanno Syachry Banun Takahiro Osawa Takahiro Osawa Takahiro Osawa Teguh Prayogo Widiastuti Widiastuti Widiati, Ida Ayu Putu Yoga Ibnu Graha Yuli Krisnawati YUNALDI YUNALDI Yuniarti K. Pumpun