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All Journal INDONESIAN JOURNAL OF LEGAL AND FORENSIC SCIENCES METAMORFOSA Journal of Biological Sciences Jurnal Biologi Udayana Bumi Lestari Ecotrophic, Journal of Environmental Science Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Buletin Anatomi dan Fisiologi (Bulletin of Anatomy and Physiology) Jurnal Ilmiah Sains Jurnal Wilayah, Kota dan Lingkungan Berkelanjutan
I Made Sara Wijana
Program Studi Biologi, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Udayana
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Dentistry Earth & Planetary Sciences Education Energy Environmental Science Health Professions Immunology & microbiology Law, Crime, Criminology & Criminal Justice Mathematics Medicine & Pharmacology Physics Public Health Transportation

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Journal : Ecotrophic, Journal of Environmental Science

 1 
STUDI DAN PEMANTAUAN KUALITAS AIR DI DAERAH ALIRAN SUNGA! (DAS) BADUNG I Made Sara Wijana; I.G.A. Kunti Sri Pancadewi; Abd Rahman As-syakur
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 7 No 1 (2012)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (750.939 KB)

Abstract

Badung River is one of the river that across Denpasar city. As one of the rivers that passes through the city with a very dense population, along the river there are activities that has potentially degrade water quality. The aims of this study are to determine the water quality trend and status of water quality standards of Badung River from 2006 to 2009. The result analysis showed the water quality on Badung River declined in the upstream section and relatively stabl e in the middle and downstream section. This situation is result of the waste sources is relatively constant throughout the study period. The existence of DO, BODS, Nitrites, Phosphates, Coliform, and E. Coli is the water quality parameter that always exceeds the threshold of quality standard.
STATUS MUTU AIR SUNGAI AYUNG BERDASARKAN DATA PEMANTAUAN KUALITAS AIR TAHUN 2014-2018 I Made Sara Wijana; Ni Made Ernawati; Abd Rahman As-syakur
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 14 No 2 (2020)
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.2020.v14.i02.p05

Abstract

It is very important to know the status of river water quality, in order to determine the direction of resource management which is decreasing in quality according to its allocation. Analysis of the status of the water quality of the Ayung River in Bali Province using secondary data in the form of data on illness results from 2014 to 2018. The number of parameters applied to the fire is 16 parameters with class II water quality standards referring to attachment XII of Bali Governor Regulation No. 16 of 2016 concerning Environmental Quality Standards and Environmental Damage Standard Criteria. The analysis used the Storetic Method (Decree of the Minister of Environment Number 115 of 2003). The results of the analysis show that the status of Ayung River water is at very good, good and moderate levels. The status of the Ayung River's air quality tends to decline from year to year and from upstream to downstream. Status determining parameters are: BOD5, phosphate, phenol, detergent and sulfide. Key words: water quality status; ayung river; storet.
KEANEKARAGAMAN LAMUN DAN MAKROZOOBENTOS SEBAGAI INDIKATOR KONDISI PERAIRAN PANTAI SINDHU, SANUR, BALI I Made Sara Wijana; Ni Made Ernawati; Made Ayu Pratiwi
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 13 No 2 (2019)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (292.076 KB) | DOI: 10.24843/EJES.2019.v13.i02.p11

Abstract

Sindhu Beach is part of the Sanur beach area. Sanur area is one of 11 strategic national tourism areas in Bali. Beach tourism activities have the potential to cause degradation of coastal ecosystems. Ecosystem changes can be determined using bioindicators. This study aims to determine the condition of the Sindhu Coast waters ecosystem based on seagrass diversity and macrozoobenthos as indicators. This research was conducted in November 2019 at Sindhu Beach. Seagrass observations and macrozoobenthos sampling were carried out at four stations with three replications at each station. Data and samples were collected using the quadratic transect method. Eight species of seagrass were found in Sindhu Beach with a percentage of cover between 16.33% - 63.37% and density between 1572 ind / m2 - 3314.4 ind / m2. The average value of the seagrass diversity index was 1.24, the average uniformity index was 0.78, and the average dominance index was 0.32. Types of macrozoobenthos found were 23 species with abundances ranging from 2.33 ind / m2 - 28.33 ind / m2. The average value of macrozoobenthos uniformity index is 1.50, the average diversity index is 0.68 and the average dominance index is 0.36. Based on the index value shows that the waters of Sindhu Beach are in good condition or there is no ecologically significant pressure.
PROFIL BEBERAPA KOMUNITAS PERAIRAN TELUK BANYUWEDANG I Made Sara Wijana; Ni Made Ernawati
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 16 No 1 (2022)
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.2022.v16.i01.p10

Abstract

Banyuwedang Bay is located in the West Bali National Park (TNBB), which is part of the conservation area. There were a lot of tourism activities developed in this area, which potentially caused disruption of the surrounding water conditions. This study aims to determine the profile of various communities in the waters of Banyuwedang Bay and as initial data to see the development of these communities due to the environmental impacts of various activities in the waters and coastal area of Banyuwedang Bay. Data was collected from five observation stations including: Community structure of Plankton, Macrozoobenthos, and seagrass, and coral reef cover. Result shows that the phytoplankton community consist of 9 genera where Nitzschia sp. (Bacillariophyceae) as the dominant species found. Phytoplankton have low diversity index ranging between 0.348 - 1.411. Zooplankton diversity index also has low value 0.693 with three genera found namely Copepoda sp., Nauplius sp. and Daphnia sp. Macrozoobenthos community is composed of 17 macrozoobenthos genera, with low diversity index ranging ??between 0.562-1.809. There are only two species of seagrass, Halophila ovalis and Cymodocea rotundata, which were found in Banyuwedang Bay. Coral reef cover seems to be ranged from poor to good conditions, with 25% - 73% coverage. Based on the result, we concluded that the Banyuwedang Bay has a moderate condition to the growth of plankton and seagrass, but good for coral reefs. Periodic monitoring is needed to find out changes in conditions that can occur in Banyuwedang Bay. Keywords: Banyuwedang Bay; community structure; macrozoobenthos
INDEKS STRUKTUR KOMUNITAS DAN SAPROBITAS PLANKTON SERTA CHECKLIST KEBERADAAN NEKTON DI PERAIRAN DANAU BERATAN, BALI Gede Surya Indrawan; I Made Sara Wijana; I Made Saka Wijaya; Abd. Rahman As-syakur; I Putu Sugiana; I Made Yunarta
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 16 No 2 (2022)
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.2022.v16.i02.p10

Abstract

Beratan Lake was mainly popular for tourism and aquaculture activities that affecting water's environmental characteristics. The water healthiness indicator can be seen through the organism's existence, namely plankton to nekton biota that can be uses as an essential parameter in monitoring water conditions. This study aims to determine the plankton community structure index, saprobity index and the presence of nektons in the Beratan Lake. Plankton were sampled using the pouring method while the nekton sample was taken randomly through direct sampling with fishing nets and conducted interviews with the surrounding local community and fishermen. The results of the study found that the abundance of phytoplankton was dominated by Staurastrum with abundance level 1,836.92 ind/L. Meanwhile, the zooplankton was dominated by Rotifera with abundance level 8.17 ind/L. The diversity index, uniformity and dominance of phytoplankton are 1.31, 0.60 and 0.33 respectively, while the saprobity index is 1.08 which classifies the waters of Beratan Lake as being in a lightly polluted condition. There were 18 species of nektons in Beratan Lake were found, with one endemic species Rasbora balinensis and 13 foreign fish. There also an invasive species, namely zebrafish (Amatitlania nigrofasciata) was found in this Lake. From the results of the study, we hope that the government in cooperation with the surrounding community, can control the ecological conditions of the waters of Beratan Lake, especially the presence of invasive species which are increasing in number, as well as protect endemic species. Keywords: Abundance; beratan lake; community structure; plankton; saprobity
EVALUASI SISTEM DAN DAMPAK LINGKUNGAN PENGELOLAAN AIR TERPRODUKSI PADA SUMUR X1 PT MGBI LAPANGAN WUNUT Dhana J, Ida Bagus; Budiarsa Suyasa, I Wayan; Sara Wijana, I 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.p02

Abstract

PT Minarak Gas Brantas Inc.'s operations in the Wunut Field involve the production of waste in various forms, primarily liquid waste, with produced water being the most significant type. Proper management of this produced water waste is crucial to prevent environmental pollution and ensure economic and environmental sustainability. The company manages this waste by reinjecting it into the reservoir to prevent groundwater contamination. To ensure the effectiveness of this reinjection process, they have created a groundwater flow pattern map (flow net) at three locations near the injection well: LP1 in Keduung Boto Village, LP2 in Candi Pari Village, and LP3 in Candi Pari Village, all in Sidoarjo Regency. This helps in understanding the potential spread of pollutants in the soil and underground water, aiding in environmental pollution monitoring and managment.The groundwater from this area is used for various human activities like bathing, cooking, and washing. However, based on water quality standards outlined in Ministry of Health Regulation No. 2 of 2023, the produced water from Well X-1 in the Wunut Field does not meet the required TDS (Total Dissolved Solids) content standards due to a decline in hydrocarbon fluid production, resulting in a separator efficiency of 74,86%. Additionally, lab tests and flow net results indicate that the TDS levels in LP1, LP2, and LP3 do not meet the sanitation and hygiene water quality standards, suggesting potential seepage in these locations that could contaminate groundwater. Keywords: Oil; Gas Produced Water; Gas Separator Eficiency; Groundwater Flow
Co-Authors A.A.S. A. Sukmaningsih Abd. Rahman As-syakur Adi Ariyanto Wibisono Bernard A.R Mendes Bram Setyadji Dewa Ayu Intan Tirta Sari Dhana J, Ida Bagus Galih Anindita Kusumatjahja Gede Surya Indrawan Gussasta Levi Arnenda I Gusti Ayu Kunti Sri Panca Dewi I Gusti Ngurah Kade Mahardika I Ketut Junitha I Made Saka Wijaya I Made Yunarta I Putu Sugiana I W BUDIARSA SUYASA I Wayan Suarna Ida Ayu Putu Sugiantari Ida Bagus Gede Darmayasa Inna Narayani IRIANI SETYAWATI Khotima Dwi Cahya Komang Kartika Indi Swari Lalu Muhammad Sakti Surya Jagat M. Rheza Rizki Syahputra M. Sudiana Mahendra Made Ayu Pratiwi Ngurah Intan Wiratmini Ni Ketut Febri Antini Ni Made Ernawati, Ni Made Putu Angga Wiradana Retno Kawuri Suranjaya I .Gd Viryanando Evan Rahardja