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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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PENILAIAN KAPASITAS DAN PEMANFAATAN GAS METANA DI TPA BAGENDUNG CILEGON, INDONESIA Hasianetara, Sarah; Sodri, Ahyahudin; Mugi Astuti, Lina Tri
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.p09

Abstract

Cilegon only relies on one final disposal site, namely the Bagendung Landfill, which annually receives up to 24.742,80 tons of waste from the population of Cilegon. This amount has an impact on the amount of waste generated and affects the length of time Bagendung Landfill can operate. The process of degradation of organic waste material at the landfill produces landfill gas which includes methane gas (CH4) and carbon dioxide gas (CO2) thereby contributing to GHG (Green House Gas) emissions. This study aims to analyze the remaining operation time frame of and the production of methane gas produced from the waste disposal process at Bagendung Landfill, also its contribution to GHG emissions. This research was started by surveying to find out the waste generation that goes to the landfill and the remaining land area to receive municipal waste. This study used LandGEM version 3.02 software to calculate methane gas production resulting from the landfill waste degradation process. Due to the predicted waste collected in 2024 reaching 281,984.90 m3, Bagendung Landfill can only be utilized until 2024. The emission impact can be reduced by utilizing 1.527.184,57 m3 of methane gas to produce 1.65 GWh as an alternative to electrical energy which is very helpful in meeting the electricity needs of Cilegon City. This research indicates that Bagendung Landfill will not be able to maintain its capacity as it will be reached one year earlier than designed. Utilizing landfill methane gas increases the environment's quality by avoiding 25.471,47 tCO2eq of GHG emissions. Moreover, it can continue after the landfill is closed. Keywords: landfill; waste generation; methane gas production; emission
EVALUASI PELAKSANAAN TRI HITA KARANA PADA LINGKUNGAN VILA DI KECAMATAN UBUD Sanjaya, I Wayan Agus Rene; Suryawan Wiranatha, Agung; Sukewijaya, 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.p03

Abstract

Development policies in Bali are expected to maintain the sanctity and harmony of Bali nature, according to concept of Tri Hita Karana (THK). Ubud is famous for its unique arts and culture, it is hoped that it will unite in harmony towards harmony based on local wisdom values. Study aims to assess the criteria and analyze the level implementation of THK in the villa environment in Ubud Subdistrict. Determining the location of the research carried out by purposive way. The data collection method was carried out using observation techniques, interviews, questionnaires and literature study. Respondents in this study were villa managers. The three elements of THK include parhyangan, pawongan, and palemahan. The highest score for parhyangan is a indicator: religious activities carried out every day, as well as periodically (odalan) (94.60%: very good). The lowest score is the indicator: the implementation of lectures in the villa environment (60.20%: enough). The highest score for pawongan is a indicator: harmonious relationship between employees and owners (95.00%: very good). The lowest score is a indicator: efforts to increase human resources in the surrounding community (77.20%: good). The highest score for palemahan is a indicator: there is a commitment to the environmental quality of the villa (89.80%: very good). The lowest score is a indicator: waste management and hazardous and toxic materials (B3) (58.40%: enough). The level of implementation of THK in villas in Ubud Subdistrict is 81.91% (good). The level of implementation of THK element is parhyangan at 84.00% (very good), pawongan at 86.28% (very good), and palemahan at 75.44% (good). It is hoped that the THK indicator can continue to be further developed, in a big tourism area and the application of the mandatory Environmental Management Statement is expected to achieve sustainable and environmentally friendly tourism in villas or the tourism industry in Bali. Keywords: Implementation; Tri Hita Karana; Ubud Subdistrict; Villa
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
PEMANFAATAN EKOENZIM DARI KULIT BUAH-SAYUR UNTUK PENINGKATAN KUALITAS AIR DANAU BATUR DI KECAMATAN KINTAMANI BANGLI, BALI Suyasa, I Wayan Budiarsa; Susanah Rita, Wiwik; Irdhawati, Irdhawati; Gede Widihati, Ida Ayu; Wirajana, Nengah; Sibarani, James
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.p08

Abstract

Eco enzyme production through the fermentation process of household waste, such as leftover fruit and vegetables can also be a solution to minimize waste from its source. This research aims to determine the effect of a mixture of organic materials, fruit and vegetable waste eco enzyme on pH, and the effect of eco enzyme dosage on improving the water quality of Lake Batur, Kintamani Bali. Making eco enzymes using vegetable and fruit waste. water, molasses in a ratio of 3: 10: 1. The liquid is fermented for 3 months while observing the fermentation process. Eco enzyme is harvested and filtered, ready for testing to improve the water quality of Lake Batur. The results of observations of making eco enzyme can be explained that in the first 4 weeks, there was a change in colour with shades of brown to reddish, after the fourth week the colour was relatively stable (no colour change. Changes in pH during the process of making eco enzymes were related to variations in the composition of organic material (vegetable residues. There was a decrease in pH). with an average of up to 1 digit, the highest reduction occurred in ingredients containing papaya, mango and mustard greens. Eco enzymes can improve water quality as indicated by several water quality parameters, but are not enough to achieve conformity with the established quality standards. Keyword: Eco Enzyme; Water Quality; Batur Lake
OIL SPILL SIMULATION IN THE BALI STRAIT USING THE GNOME AND FVCOM MODELS ON EASTERLY SEASON Putu Hadi Wiguna, Pande; Hendrawan, I Gede; Osawa, Takahiro
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.p10

Abstract

Among several forms of marine pollution, oil damages coastal ecosystems. Repeated reports of oil contamination in the marine environment can partly load with major shipping lines. The Ketapang-Gilimanuk crossing over the Bali Strait is Indonesia's second busiest ferry port after Merak-Bakauheni. The most congested shipping routes can carry a significant risk of environmental damage from an oil spill. Oil spill trajectory modelling is carried out to reduce the impact of this possible disaster. Therefore, the use of modelling to ascertain the route of the oil spill was considered. The oil leak path is simulated using the GNOME model. Two oil spill scenarios were used as input models. The chosen location is around the Ketapang Gilimanuk crossing, as well as the time of the easterly season. An ocean HF radar stationed in the Bali Strait verifies the accuracy of the current marine data generated by FVCOM. To see the pattern of the oil spill trajectory based on a ten days simulation, we combined the latest data from FVCOM with GNOME. To determine the ability of the model to predict the flow and trajectory of oil spills in the Bali Strait, this study try to analyze and interpret the oil spill trajectory from model and then validate the model results with satellite imagery. Keywords: Bali strait; oil spill; trajectory; GNOME; FVCOM; HF Radar
ANALISIS KANDUNGAN LOGAM BERAT Pb, Cu, Cd, Cr PADA TANAMAN PADI DAN JAGUNG YANG SISTEM PENGAIRANNYA BERASAL DARI SUNGAI BADUNG Widyasari, Ni Luh; Rai, I Nyoman; Sila Dharma, IGB; Sudiana Mahendra, Made
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.p01

Abstract

This research aims at identifying the content of heavy metals, namely Pb, Cu, Cd, and Cr in the rice and corn cultivated on the agricultural land of Subak Kerdung, Pemogan Village, South Denpasar District. Rice and corn plants are suspected of having indications of heavy metals due to pollution of the downstream Badung River, which is used as irrigation in Subak Kerdung agricultural land. The analysis of heavy metal contents is conducted on the rice and corn plant organs samples, including roots, stems, leaves, and seeds. The test results show that the organs of rice and corn plants detect the contents of heavy metals Pb, Cu, Cd, and Cr which exceed quality standards. According to the results of analysis tests on organs of the rice plant, the content of heavy metal Pb is detected 21.95 mg/kg; heavy metal Cu 170.42 mg/kg; heavy metals Cd 0.35 mg/kg; and heavy metal Cr 7.03 mg/kg. Meanwhile, the results of analysis test on organs of the corn plant detect the content of heavy metal Pb 16.96 mg/kg; heavy metal Cu 58.16 mg/kg; heavy metal Cd 2.5 mg/kg; and heavy metal Cr 3.16 mg/kg. Therefore, it can be concluded that the content of heavy metals Pb, Cu, Cd, and Cr is more detected in the roots of rice and corn plants, also partially translocated to their stems, leaves, and seeds. Keywords: heavy metals; rice plants; corn plants; Badung rivers
ANALISIS KUALITAS AIR LAUT TERHADAP KELESTARIAN BUDIDAYA RUMPUT LAUT DI PANTAI NUSA PENIDA, BALI Sudipa, Nyoman
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.p04

Abstract

Seaweed cultivation is one of the economic resources of the Nusa Penida community. This research determines the condition of Nusa Penida's waters to support the existence of seaweed cultivation. This research uses a quantitative approach to the water conditions of Nusa Penida. The results of the pollution index calculation show that the quality of sea water on the coast of Nusa Penida is in good condition and very good for seaweed life in Nusa Penida waters which can be seen from the results of physical, chemical and microbiological parameter tests. Parameters that influence the sea water pollution index are total disolved solids parameters, ammonia and nitrite in Jungutbatu sea water, Nitrite in Toyapakeh sea water, total disolved solids, Ammonia and nitrite in Penida sea water, Nitrite in Buyuk Kutampi sea water, Ammonia and Nitrite in Sampalan sea water, and Nitrite. in Suana sea water. Keywords: Pollution Index; Water Quality; Seaweed; Total Disolved Solids
SPATIAL ANALYSIS OF LANDSLIDE POTENTIAL ON AGRICULTURE IN THE AYUNG WATERSHED, BALI PROVINCE Feronika, Feronika; Osawa, Takahiro; Merit, I Nyoman
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.p06

Abstract

The Ayung Watershed is one of the watersheds with mountainous and hilly landscapes with potential landslides. This study aims to determine the potential level of landslide susceptibility and its effect on agricultural land use in the Ayung watershed. The method used to determine the potential for landslides is a weighting/scoring method by overlapping the parameters causing landslides, namely rainfall, slope, land use, landform, geological structure, and soil type. Determining the effect of landslide potential on agricultural land is done by overlapping the landslide potential map with land use. The data used includes BMKG monthly rainfall for 2015-2019, the slope of DEMNAS data for 2020, geological structure and landform 1:25,000 scale RBI map data for 2019, land use using Sentinel 2A data for 2020, and soil types in the form of spatial planning maps Province of Bali 1:25,000 scale in 2019. The results showed that landslides in the Ayung watershed were categorized as low potential to high potential. Classes with no landslide potential are widespread in the upstream and downstream areas of the watershed, covering an area of ??18,976.01 ha (60%), the low potential category covering 5,877.78 ha (19%), the medium potential category covering an area of ??3,208.76 ha (10%) and the low potential category covering an area of ??3,208.76 ha (10%) spread over the upstream and central parts of the watershed covering an area of ??3,528.55 ha (11%). The effect of landslides on agricultural land has a category from no potential to high potential. The category with no potential is widespread in the upstream watershed area of ??13,268.57 ha (66%), the low potential category is 3,268.57 ha (16%), the medium potential category is 1,782.31 ha (9%), and the high category is spread in the upstream and the middle of the watershed area of ??1,707.28 ha (9%). Keywords: Landslide; Watershed; Mapping; Agricultural land
PENGELOLAAN VEGETASI DI KAWASAN EKOWISATA MANGROVE PERANCAK, JEMBRANA Sundra, I Ketut; Mahendra Dewi, Ni Luh Putu
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.p09

Abstract

Perancak mangrove forest is one of the important supporters for mangrove ecotourism in perancak as an ecosystem that functions ecologically, economically and socially as an effort to preserve the beach in a sustainable manner. This research aims to determine the level of diversity of mangrove vegetation types in the perancak coastal area and conduct mangrove management efforts through vegetation analysis and soil analysis. Sampling carriedout on true mangroves and associated mangroves using purposive sampling technique. The method of flora sampling was carried out by quadrant method by calculating the important value index, diversity index and type distribution pattern. True mangroves consist of 13 species and 1367 individuals, dominated by rhyzophora stylosa, with a total importance index (indeks nilai penting)= 299.86 % (classified as sestable), diversity index 1.1192 and distribution pattern = 0.548 (vegetation is stable and uniform). Associate mangroves consists of 13 types and 649 individuals, dominated by the type Terminalia cattapa. Important index =297.892 %, diversity index = 0.9438 and type distribution pattern = 0.73 i.e vegetation that grows is classified as uniform. Analysis results for the 5 soil samples for total n, p and k elements available and organic c, all support mangrove growth. the development of true mangroves and associations is the main supporting factor for the development of tourism areas in the perancak jembrana ecotourism area which is now developing into a beach park developed by the people of Perancak village. Keywords: Perancak; Mangrove Diversity; Management; Soil Analysis
DAMPAK PENGEMBANGAN PARIWISATA TERHADAP KONDISI LINGKUNGAN PESISIR DAN STRATEGI PENGEMBANGANNYA DI PANTAI YEH GANGGA, KABUPATEN TABANAN Pradnyani, Gusti Ayu Manik; Sudiana Mahendra, Made; Diara, I Wayan
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.p11

Abstract

The Tabanan Regency Government has established Yeh Gangga Beach as one of the tourist attractions. Tourism development will certainly have an impact on the physical, social and economic environment of the local community as well as for the tourism area itself. So it is necessary to conduct research on how much tourism impact the physical environment and the social and economic communities on the coast of Yeh Gangga Beach. The method used in this research is mixed, using two types of data, namely quantitative data related to population data and questionnaire results, as well as qualitative data through observation and interview methods related to data on the physical environment and socio-economic conditions of tourism. The analysis method to formulate alternative strategies that can be applied in the development of Yeh Gangga Beach is done by SWOT analysis. Tourism development is in line with the construction of tourism support facilities. There are changes in the coastline in the form of accretion caused by the construction of trails and there are two river mouths large enough to cause sedimentation. The river water quality is still classified as good and has a parameter value that is not much different because it has almost the same water activity. Tourism development on Yeh Gangga Beach has positively impacted the local community’s economy and income, with changes in livelihoods and income. The calculation results of the strength factor obtained a score value of 1.96 and a weakness value score of 0.91 with a score difference of +1.04. then the opportunity factor obtained a score value of 2.01 and a threat value score of 0.66 with a difference of +1.35 so that Positive-Positive (+, +) results were obtained, namely in Quadrant I. This position indicates that internal strengths and environmental conditions support tourism development so strategic recommendations are given by way of internal strengths and environmental conditions that support tourism development. This position indicates that the internal is strong and the environmental conditions support tourism development, SO the strategy recommendations are given by making the most of the strengths and opportunities possessed. Keywords: Environment, Tourism, Impact, Development Strategy

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