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Ecotrophic, Journal of Environmental Science
Published by Universitas Udayana
ISSN : 19075626     EISSN : -     DOI : -
Core Subject : Social,
Environmental Science
Ecotrophic, Journal of Environmental Science (ISSN : 1907-5626) atau yang disingkat EJES, merupakan media publikasi bagi hasil-hasil penelitian, artikel dan resensi buku dibidang ilmu lingkungan. EJES adalah peer-reviewed dan open access jurnal, diterbitkan dua kali setahun yaitu bulan Mei dan September oleh Program Studi Ilmu Lingkungan, Program Pascasarjana Universitas Udayana.
Arjuna Subject : -
Articles 359 Documents
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PENETAPAN DAYA TAMPUNG BEBAN PENCEMAR TUKAD MATI DI KABUPATEN BADUNG DENGAN MODEL QUAL2KW 5.1 i kadek ardi putra; I Wayan Budiarsa Suyasa; I G B Sila Dharma
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 (272.251 KB) | DOI: 10.24843/EJES.2017.v11.i02.p11

Abstract

ABSTRAK Tukad Mati is one of watershed that is flow through two regencies of Badung and Denpasar that has 12 km length. Tukad Mati functioned as irrigation, drainage system and as the exile of wastewater from all activities along the river. Because of the pollution, the water quality has degraded. The source of pollution is organic matter pollutant, agricultural pollutant such as pesticide and hazardous waste. The aim of this research is knowing the pollutant loading rate from point source and non point source using Qual2kw model, to define that amount of pollutant that are allowed to exile in Tukad Mati river. The water quality parameter that analyzed is DO, COD, BOD and Phosphate. This research divided into three sections, and 4 scenario of simulation to know allowed loading rate of pollutant along the river. The result of simulation using Qual2kw for BOD that is the minimum DO loading rate was 1,15 kg/day for section 1 then maximum loading rate is 64,88 kg/day on section 3. Meanwhile for COD parameter, the minimum loading rate is 1446,61 kg/day and in the upstream the minimum COD loading rate 1375,06 kg/day. For phosphate parameter the loading rate that allowed is 0,79 kg/day, while in the upstream maximum 12,57 kg/day on segment 3. Keywrods : Tukad Mati, Qual2KW 5.1, Loading Rate, water quality
SISTEM DAN NILA! EKONOMI PENGELOLAAN SAMPAH DI DEP O CEMARA DESA SANUR KAJA, KECAMATAN DENPASAR SELATAN, KOTA DENPASAR KRESNADI DWI PUTRANT0; MADE ANTARA; Ida Bagus Sudana
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 7 No 2 (2012)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (883.874 KB)

Abstract

The first objective of this study is to know the management systems currently on the Depo Cemara sanur Kaja Vilage secondly to know the level of performance in the garbage depot management of Depo Cemara and the thirdly is to know the economic value of waste management results. The research method used is a method of qualitative and quantitative methods, the trash management system is obtained through direct interviews with managers and officers as respondents and observations at one point in the depot location which is at Depo Cemara the Village of Sanur Kaja then compared with SNI and analysed its level of performance with Likert scala. The economic value that is obtained trough production profits total revenue monus total cost. Waste management system Depo Cemara Pine of sanur Kaaaaaaja Village Denpasar City is an urban waste management systems by applaying the principles of community based management through the mechanisms of planning, organizing, aktuating and controlling, and has conducted waste management with the principle of 3R (Reduce, Reuse, Recycle) but not yet optimal. Based on the analysis of the performance level of the waste management system implemented at the depo Cemara management system, resorce aviabilities, infrastructure and financial management catagorized as moderate/ quite well and managed to finence his own household.Waste management can be applied to reduce the volume of waste into the environment by 2750 kg per day. Waste management is implemented at the Depo Cemara produced average economic value per day amounting to Rp. 901.571,- and Rp. 27.167.140,- per month. Depo Cemara of sanur Kaja Village imlemented waste management with the principle of the 3R (Roduce, Reuse, Recycle) is more optimal means of waste management from the source population that is at home running well so that is can support more optimal management system and reduce the cost of depo operation to become more effecient and it will eventually increase the economic value of the processing of waste.
ESTIMATION OF PRIMARY PRODUCTIVITY FOR TUNA IN INDIAN OCEAN Ende Kasma; Takahiro Osawa; I Wayan Sandi Adnyana
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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Abstract

Indonesia has abundant fisheries potency, one of fisheries potency in Indian Ocean is tuna fish. Primary productivity data used as indicator of tuna fisheries potency in Idian Ocean.Research location is in Indian Ocean 070 - 210 S and 1070 - 1210 E. Weekly satellite data in 2007 used are chlorophyl, sea surface temperature, Photosynthetic Available Radiation (PAR) and euphotic zone (Zeu) data. Daily fisheries data is from tuna fish catching data 2007 in PT. Perikanan Samudera Besar (PT. PSB). Satellite data is processed by Vertically Generalized Production Model (VGPM) formula to obtained primary productivity. Tuna fish catching data correlated to satellite data to know correlation of primary productivity value to fish catching data.Result of this research is there four species of tuna fish catch in Indian Ocean, that are Madidihang or Yellowfin tuna (Thunnus albacores), Bigeye tuna (Thunnus obesus), Southtern Bluefin tuna (Thunnus macoyii), and Albacore (Thunnus alalunga). Where 73% tuna fish is Bigeye tuna. Bigeye, Albacore and Yellowfin tuna are produced annually, while Southern Bluefin tuna in northwest monsoon is no fish production. Chlorophyll-a, sea surface temperature and primary productivity value in research location are from 0,06 mg/m3 to 0,38 mg/m3, from 24,640C to 31,820C, and from 73,22mgC/m2 to 658,57 mgC/m2 respectively. Coefficient correlation in primary productivity and fish catching in fishing ground area is small (r = 0.008), its explained that, fish catching number is not influenced by primary productivity. In high or low primary productivity condition tuna fish catched in Indian Ocean area. Potential fishing ground area of Bigeye tuna, Albacore, Yellowfin and Southern Bluefin tuna in Indian Ocean are in 110 – 160 S and 1060 – 1210 E, the primary productivity value is from 73 mgC/m2day to 732 mgC/m2day and differences of sea surface temperature value of tuna fish are from 240 C to 310 C, 240 C to 300 C, and 250 C to 310 C for Bigeye tuna, Albacore and Yellowfin tuna, respectively. While Southern Bluefin tuna distribution is in temperature area from 260 C to 300 C and primary productivity value is from 92 mgC/m2day to 449 mgC/m2day
ALTITUDINAL DISTRIBUTION OF ASTERACEAE INVADERS, AUSTROEUPATORIUM INULIFOLIUM AND AGERATINA RIPARIA, IN THE DISTURBED FOREST OF BATUKAHU NATURE RESERVE, BALI Laily Mukaromah
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 (3261.128 KB) | DOI: 10.24843/EJES.2016.v10.i02.p12

Abstract

Biological invasions are a major threat to biodiversity worldwide. Here, we aim to assess the occurrence of two invasive Asteraceae, Austroeupatorium inulifolium and Ageratina riparia, and the extent of their distributional range along altitudinal gradients in Mt Pohen, Batukahu Nature Reserve, Bedugul, Bali. The cover abundance of Austroeupatorium inulifolium and Ageratina riparia were measured by establishing 92 plot samples in four different forest conditions encompassed elevational ranges from the lowest (forest borders) to the highest elevation of Mt Pohen. Results showed that the abundance of both Asteraceae invaders were strongly correlated with disturbed habitats located at lower elevation. The forest borders at these forest sites were characterized by dense thicket of Austroeupatorium inulifolium and high abundance of Ageratina riparia. Both Asteraceae invaders reach their maximum altitudinal range up to the highest peak of the Mt Pohen. Results highlight that high abundance of these Asteraceae invaders which forms dense cover may lead to major forces of change in plant communities and forest ecosystem.
PEMETAAN KUALITAS AIR TANAH DI DESA DAUH PURI KAJA KOTA DENPASAR M. FAIRUZ ABADI; M.S. MAHENDRA; I.W BUDIARSA SUYASA
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 6 No 2 (2011)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (361.55 KB)

Abstract

Groundwater pollution has been an issue of concern for environmentalists. This study aims to detect the possibilities of municipal ground water quality deteriorations, to know how does the classification status of groundwater contamination, and also to map distribution of the status of groundwater contamination in Desa Dauh Puri Kaja Denpasar City. A method to assess municipal water quality is using Water Quality Index method, with the cluster classification. Mapping groundwater contamination is done using Arc View 3.3 (Geografic Information System) The parameters used are TSS, BOD, COD, NH3-N, Cd Cr (VI), Cl, N, Sulfate, H2S and total coliform. This research proves that groundwater quality status on a cluster two is in the category of heavy impurity, whereas in cluster two sources of pollutant in the material organic derived from water run off and seepage from rivers. Status of water quality in cluster three are on the same level with the water quality status in cluster one, but based on the characteristics of pollutants was found that the factor of pollutant in the cluster three caused sewage contamination of the active substance in detergent. in cluster one source pollutants is derived from organic waste (domestic waste). Suggestions and recommendations in this study aimed to the peoples concession of land in the Dauh Puri Kaja thats potentially affect for ground water quality should be equipped with sewage treatment plants (on-site sanitation), and to the government and related institutions in order to mobilize the potential of empowering community to create an environment with better quality, cleaner, more convenient to protect ground water.
PENGARUH NILAI OKTAN BAHAN BAKAR DAN PUTARAN MESIN PADA KENDARAAN BERMOTOR TERHADAP KARAKTERISTIK EMISI GAS BUANG I P Sastra Negara; I W Budiarsa Suyasa; I W Suarna
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 4 No 2
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (287.82 KB)

Abstract

The air pollution that is occurring currently is main by caused by the use of motor vehicle that consequently it lead to the increasing fuel consumptions as the main source enrgy for transportation equipment. The fuel that is used in the vehicle comes in several types. In the market its differences show by the octane numbers that can contribute different effect to the environment due to their combustion processes. The road conditions through which the vehicles move are the major factors that can trigger the growth of pollution to the surrounding. It is predicted that about 70% of the air pollutions is caused by the motor vehicle emissions.This research was fully conducted in the laboratorium. Three types of fuel with different octane numbers were used in this research. Premium with octane number 88, Pertamax with octane number 92, and Biopertamax with octane number 91. The engine speeds were also varied from 500 rpm, 1000 rpm, 1500 rpm, 2000 rpm, 2500 rpm, 3000 rpm, 3500 rpm, to 4000 rpm. For every type of fuel, the engine was run five times for every engine speed in order to obtain the exhausted gas characteristics from the vehicles to the environment.The result of the research shows that at engine speed of 2500 rpm the CO emission for each type of fuel : Premium with octane number 88 is 0,415%, Pertamax with octane number 92 is 0,556%, and Biopertamax with octane number 91 is 0,273%. The octane number also effects the CO2, HC, and NOx emissions in small quantities. Statistical analysis shows both the engine speed and the octane number contribute significant effects on the exhaust emissions, the CO and HC emissions provided negative effects, while the CO2 and NOx emissions get positive effects. In comparisan to with the vehicle speed on the road from secondary data to represent the engine speed in the laboratorium, and assuming that the traffic density is identical to a factor that determining engine speed, it can be concluded that the air pollution by CO emission due to the characteristics of the road has negative influence.The octane number of the fuel and the engine speed gives a significant effect. The traffic density and the road conditions can trigger the level of the concentration of CO gas as pollutants to the surrounding air.
KUALITAS AIR MANGROVE DITINJAU DARI SIFAT FISIK-KIMIA DI HUTAN MANGROVE PATUNG NGURAH RAI TUBAN DENPASAR SELATAN BALI Ni Luh Suriani
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 objectives of this research are to find out of mangrove water quality at Patung Ngurah Rai Tuban Denpasar Selatan Baliregarding to physical-chemical . Values of some variables such as total disolved solid, Cromium (Cr), Cadmium (Cd), , Nitrit, and oilwas higher than that of standard quality.This is caused by organic and anorganic waste such as garment factory come from BadungRiver, domestic waste, Ngurah Rai iar Port waste, and car workshop. The inpact of this problem is that the species of mangrove forestis not good condition.
KUALITAS AIR SUMUR GALI DITINJAU DARI KONDISI LINGKUNGAN FISIK DAN PERILAKU MASYARAKAT DI WILAYAH PUSKESMAS I DENPASAR SELATAN Ni Made Marwati; N.K. Mardani; I Ketut Sundra
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 5 No 1
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

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Abstract

water quality reduction potentially happen. Anxiously wells water quality reduction will happen in consequences frombad sanitation, like household waste water seepage, chemistries cesspool, laundry, etc.This research applied comparatively descriptive characteristic approach quantitative method. Well water wassample taken from 9 units on February and 9 units on April 2008. Sample unit was taken by purposive sampling methodfor excavated wells and random sampling method for water sample. Analysis result for well water was compared withquality standard of Bali Governor regulation No.8 ‘2007 and with quality standard of Health Minister RepublicIndonesian Rule No.907 ‘2002 and also pollution index according to Minister of Alive Environment Decision No.115‘2003. Water quality was calculated based on pollution index correlated with physical environment condition withSpearmen test (Rho) and measuring society behaviour by Sturges.Research result shows that in February for parameter BOD, Fe and total coliform slightly exceeded water qualitystandard and in April 2008 for parameter DO, BOD, Fe and total coliform slightly exceeded water quality standard class Iand drinking water quality standard. Pollution Index (IP) with result for all well water researched is under 5 (five) that is(1 < IP ? 5) including low pollution. By using Spearmen analysis, so that alternative hypothesis unaccepted, well physicalenvironment condition (IS) not in correlated to excavated wells water standard quality with Rho ( ? ) 0,147 andsignificance 0,705 more than ? 5 %. Interview result shows that 9, 10 % respondents have good behaviour and 90, 9 %respondents have understanding behaviour in maintaining clean water resource managed.Suggested to local government of Denpasar city this related to clean water (PDAM) to improve distribution ofclean water so that can fulfil 100% clean water necessity of the city. Particularly to Public Health Centre I SouthDenpasar is expected to conducting chlorinization regularly to public. Society is expected to improve well physicalenvironment condition and increases healthy life behaviour.
PENGARUH KANDUNGAN MINYAK DAN DETERJEN DALAM AIR CAMPURAN BETON TERHADAP KUAT TEKAN IM TAPAYASA; IW. BUDIARSA SUYASA; IMD. ADHIKA
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 concrete represent materials/rock that is yielded by mixing smooth aggregate (sand), harsh aggregate (gravel), water andportland cement according to Regulation of Reinforced Concrete Indonesia (PBI) 1971 NI-2. Detergent concentraton (LAS) andDiesel fuel, LAS + Diesel fuel was added in each treatment of 0%; 1 ; 2,5 ; 5% to mixed water until attain minimum standard ofdepress strength according to SNI. From result of research revealed that content of LAS 0,3 % aftarned depress strength concreteequal to 23,578 Mpa at 7 day and 28,654 Mpa at 28 day according to minimum requiretment of SNI with ercentage equal to 90,24 %and 89,67 %. With Diesel fuel content 5 % afterned depress concrete strength equal to - 23,536 Mpa at 7 day and 28,717 Mpa at 28days according to minimum requitement of SNI with percentage equal to 90,08 % and 89,87 %. With mixture content of LAS andDiesel of fuel 0,2% afterned depress concrete strength equal to 23,610 Mpa at 7 days and 28,698 Mpa at 28 days according tominimum reqirement of SNI with percentage equal to 90,36 % and 89,81 %.
IDENTIFICATION OF SHORELINE CHANGES USING SENTINEL 2 IMAGERY DATA IN CANGGU COASTAL AREA Sagung Putri Chandra Astiti; Takahiro Osawa; I Wayan Nuarsa
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 (655.628 KB) | DOI: 10.24843/EJES.2019.v13.i02.p07

Abstract

Coastal areas in the Canggu and Seminyak areas located in Badung Regency, Bali Province are very attractive tourism. The development of tourism has an impact on coastal conditions. The coastal conditions analyzed are changes in coastline that occurred during 2015-2019 using remote sensing. The satellite image data used in the analysis is Sentinel 2A image data that can be accessed for free with a spatial resolution of 10 meters. Image data processing is divided into three stages, namely preprocessing, processing, and post processing using Sentinel Application Platform (SNAP) software. The preprocessing stage includes the resampling, masking, and subset areas. The processing stage includes digitizing the coastal area, digitizing accuracy analysis using the Support Vector Machine (SVM) method, and the post processing stage including correction of shoreline changes. Bands in image data used for detection of coastal areas are band 8 (NIR), 8A (narrow NIR), 11 (SWIR), and 12 (SWIR). Based on the results of the analysis of shoreline changes carried out during 2015-2019, it was found that the average shoreline changes were 1.42 m / year with erosion conditions in which the dominant wind direction originated from the southwest towards the northeast coast of the sea of ??Bali. The results of digitizing the coastal area using the Fine Gaussian SVM method with the greatest accuracy value is 87.8%. Keywords: Shoreline Change, Remote Sensing, Sentinel 2A, SVM, Wind Direction

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