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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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STATUS KEBERLANJUTAN LAHAN SAWAH DI KABUPATEN TABANAN A.A.A. Wulandira Sawitri Djelantik; Made Sudiana Sudiana Mahendra; Wayan Windia; Made Sudarma
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.p05

Abstract

The conversion of paddy fields that occurred in Tabanan district has caused concern because the number continues to increase every year. Of the various forms of agricultural land use, paddy fields are land that has undergone many changes in designation so that the conversion of paddy fields occurs rapidly and massively. The total area of ??paddy fields that decreased in the 5 years from 2016 to 2020 was 1,193.54 hectares. Seeing this phenomenon, it is important to know how the status of rice fields in Tabanan Regency is sustainable using five dimensions, namely economy, ecology, social, technology and institutional. The data were obtained through interviews with Pekaseh (kelihan subak) and farmers who carried out the conversion of paddy fields in nine subaks in nine sub-districts in Tabanan Regency, namely Pupuan, Penebel, Baturiti, Kediri, Tabanan, Kerambitan, Selemadeg, West Selemadeg, and East Selemadeg Districts. The analysis used is MDS (Multi Dimension Scaling) which is an adjustment of Rapfish using RSI TM Software (Rapid Sustainability Index) which was developed for the assessment of sustainability functions in general. The results showed that the multi-dimensional sustainability index obtained a value of 59.70 with a moderately sustainable sustainability status with the index value for each dimension being 74.56 for the ecological dimension with moderately sustainable status, 48.82 for the economic dimension with less sustainable status, 75.42 for the social dimension with sustainable status, 52.43 for the institutional dimension with moderately sustainable status and 47.25 for the technological dimension with less sustainable status. It is suggested that the local government of Tabanan Regency should to pay attention to the attributes that exist in the economic and technological dimensions so that it is expected to change its sustainability status to be quite sustainable, or sustainable and the attributes that exist in the ecological and institutional dimensions (sufficiently sustainable) can shift its status to continyu so that the value of the multi-dimensional index can increase. Keywords: conversion; paddy fields; sustainability status
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
STRATEGI PENGELOLAAN EFEKTIF EKOSISTEM TERUMBU KARANG DI KAWASAN KONSERVASI NUSA PENIDA I Dewa Kadek Wira Sanjaya; I Nyoman Merit; Ida Ayu Astarini
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.p01

Abstract

Nusa Penida MPA was established with the aim to conserving natural resources and ensuring the sustainability of livelihoods. The Government of Indonesia uses the EVIKA tools to assess the effectiveness of MPA management. This study examines the effectiveness of MPA management by looking at indicators of coral reef ecosystem health and resource utilization to develop an effective management strategy using the force filed analysis method. The results showed that the condition of coral and fish biomass in the Nusa Penida MPA experienced a significant increase. Hard coral cover was in the medium category with a cover of 43% and fish biomass of 816.80 kg/ha. The coral reef health index of the Nusa Penida MPA is 5 which indicates that coral cover is in the medium category with high recovery potential and the coral reef fish category is low. Nusa Penida marine resources are used for fisheries, tourism as well as for trade. This study recommends a strategy to increase the effectiveness of Nusa Penida MPA management by investing in increasing human resource capacity in the Bali MPA management unit in competence on monitoring ecosystem and preparing a management budget plan along with efforts to fulfill program budgets. Keywords: Coral Reef, Management; Effective; Nusa Penida; MPA
APLIKASI MOVING BED BIOFILM REACTOR (MBBR) DENGAN MEDIA BAMBU UNTUK MENGURANGI KADAR PENCEMARAN AIR SUNGAI (STUDI KASUS ANAK SUNGAI MUDING KAJA) Dewa Arya Dwiyana; I Wayan Suarna; I Gusti Bagus Sila Dharma
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.p06

Abstract

Changes in the function of land on the riverbanks into residential areas have triggered a large amount of organic material that enters into river water, causing river water to degradation in quality. If we ignored this, it will trigger the growth of pathogenic bacteria that endanger human life. One alternative way to overcome the degradation in river water quality due to increased organic material is using the MBBR method with bamboo as its media. This one of method that uses the growth of bacteria attached to the media to reduce the organic material content in river water. The purpose of this experiment was to determine the effect piece of bamboo media and the biggest effectiveness value of reducing BOD and COD levels in Muding Kaja tributary water with a determined of filling ratio, dissolved oxygen and detention time. The results show that the highest effectiveness using the MBBR method with bamboo media can reduce BOD level until 90,946 % with filling ratio 30% and time detention as long 5 hours and reduce COD level until 30,435 % by using filling ratio 30% and time detention for 5 hours. From this research we can conclude that MBBR method using bamboo as media affected to reduce BOD5 dan COD level. MBBR Method very efffective to reduce BOD5 level and less effective to reduce COD level in water river. Keywords: River water pollution, Moving Bed Biofilm Reactor, Bamboo media, Effectiveness
PEMETAAN ZONA AGROKLIMAT SCHMIDT FERGUSON MENGGUNAKAN DATA STASIUN PENGAMAT HUJAN DAN PRODUK DATA SATELIT IMERG DI PROVINSI BALI Wahyu Widodo Putranto; I Wayan Nuarsa; Ni Luh Kartini; I Wayan Andi Yuda; I Made Dwi Wiratmaja
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.p11

Abstract

Schmidt Ferguson map based on rainfall data is utilized to maximize agricultural potential by knowing the spatial pattern of agro-climatic zones. This study aims to produce Schmidt Ferguson agro-climatic zone by corrected IMERG Satellite rainfall data by station base data in Bali Province. The length of monthly rainfall data from each source is six years (2015 – 2016). Initially, IMERG Final Precipitation data level 3 is validated to 73 rainfall observation stations over Bali. Statistical methods used for this purpose are correlation coefficient (r), Root Mean Square Error (RMSE) and paired t-test. The validation results show a good correlation value of 0.62 – 0.93, RMSE value of 63.33 – 208.86 mm, the results of the paired t-test there are significant. Hereinafter, IMERG data are corrected by simple linear regression equation y = 0.905x + 4.0979 with an R2 value of 0.5878. The Schmidt Ferguson agro-climatic zone mapping from rain observation station data resulted in 5 climate zones, namely climate zone B, C, D, E, and F and from IMERG product data, 4 climate zones, namely climate zone B, C, D, and E. Keywords: Observation; IMERG;Data Validation; Schmidt Ferguson Agroclimate Zone
PENGELOLAAN HUTAN MANGROVE BERBASIS MASYARAKAT DI DESA BUDENG, KECAMATAN JEMBRANA, KABUPATEN JEMBRANA Ujang Rija Ginanjar; I Wayan Sandi Adnyana; I Made Sudarma
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.p02

Abstract

The mangrove forest in Budeng Village is managed by local communities by forming farmer groups. The interaction of the people of Budeng Village in mangrove management, this will determine the sustainability of the mangrove area in the future. It is necessary to have the right strategy in mangrove management by following the rules of balance and sustainability. The purpose of this study is to analyze changes in mangrove forest cover, find out the perception and participation of the community in mangrove forest management and develop an ideal mangrove forest management strategy. Data collection includes using literal studies, observations, questionnaires and Forum Group Discussion. Samples in this study was 30 people. Data analysis was performed using SWOT matrix and QSPM matrix. The condition of mangrove forests in Budeng Village is relatively good, there is an increased in mangrove forest cover covering an area of 36 ha in the period from 2016 to 2021. The level of community perception in mangrove forest management excellent categories and the level of community participation is in high categories. The general strategy on mangrove forest management in Budeng Village is growth strategy. Based on the results of the SWOT analysis, there are 14 alternative strategies for mangrove forest management in Budeng Village with a priority strategy based on the results of the Total Attractiveness Score calculation is to increase the role and commitment of local governments in mangrove forest management in Budeng Village. Keywords: mangroves; perception; participation; strategy; management
KARAKTER VEGETASI, KEANEKARAGAMAN MAKROZOOBENTOS DAN KARBON PADA SEDIMEN DI KAWASAN MANGROVE NUSA LEMBONGAN DAN ESTUARI PERANCAK I Made Abdi Janaguna; I Wayan Arthana; Ni Luh Watiniasih
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 17 No 1 (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.i01.p03

Abstract

Natural mangroves can be found in Nusa Lembongan, which is bordered by coral reefs, while in the Perancak Estuary, some of the lands are former ponds. The aim of the study was to determine the density, canopy cover, and organic carbon content in mangrove sediments. Data were collected from 3 stations, using transects measuring 10 x 10 m to determine density, height, trunk circumference, and canopy cover, as well as macrozoobenthos sampling. The mangrove density in Lembongan is very high, the tree height reaches 8 – 10 meters, and the mangrove canopy cover is in a good category. The macrozoobenthos diversity index is in the medium category and the carbon content in the sediments is high. Mangroves in Perancak Estuary are densely dense, with an average tree height of 8 meters, and canopy cover in the good category. The index of macrozoobenthos diversity was moderate and the organic carbon in the sediments was lower than in the mangroves at Nusa Lembongan. The character of the mangrove vegetation is different in the two areas. The Nusa Lembongan mangrove growing area is directly opposite the sea, but in the Perancak Estuary, it tends to be closed and flows by a large river around it. The mangrove growth zone is still natural in the Nusa Lembongan area, in contrast to the Perancak Estuary mangrove area which has been rehabilitated at several points. Keywords: Mangrove vegetation; macrozoobenthos; carbon on sediment
STATUS PENGELOLAAN PERIKANAN SIDAT (Anguilla Spp.) BERDASARKAN PADA PENDEKATAN EKOSISTEM DI DAERAH ALIRAN SUNGAI (DAS) CIMANDIRI, JAWA BARAT Faridz Rizal Fachri; I Wayan Arthana; I Nyoman Merit; Achmad Mustofa
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 17 No 1 (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.i01.p08

Abstract

Anguilla spp. is a catadromous fish species that have high export value in supporting the livelihood and food source for the local community in the Cimandiri Watershed, West Java, which is involved in the Indonesian Fisheries Management Area - Inland Waters (WPPNRI-PD) 432. However, pressure on habitat and watershed ecosystems is leading to degradation due to anthropogenic activities is inevitable. This study aimed to determine the composite index of the seven domains and the eel-fishery management status performance based on the EAFM approach in the Cimandiri watershed. The research was carried out from April 2021–February 2022, using a quantitative method focused on testing theory by measuring research variables with numbers and analyzing data based on the findings in each domain. The ex-situ and in-situ data were collected through direct measurements and in-depth interviews with respondents. Subsequently, the composite scores of domains were calculated using flag modeling (multi-criteria analysis). The results highly likely indicated that habitat and social are the lowest-performance domains and require more attention for improvements. In general, the status of the eel fishery management using the EAFM approach in the Cimandiri watershed is fairly good. However, integration of multi-sectoral collaboration is highly needed through the development of effective co-management by maximizing the roles of the community to be further involved in planning and implementing the management actions of the Cimandiri watershed in the form of participative, community-based, toward sustainable use of the resources. Kata kunci: Eel, Cimandiri Watershed, EAFM, Co-management
CARBON STOCKS ESTIMATION ON URBAN VEGETATION USING UAV-SfM PHOTOGRAMMETRY METHOD Agus Sukma Yogiswara; Takahiro Osawa; I Wayan Nuarsa; Abd. Rahman As-syakur
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 17 No 1 (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.i01.p04

Abstract

Global warming and biodiversity loss are critical issues, and forest retention and reforestation programs are crucial in mitigating climate change. However, discussions around these programs often exclude the role of urban vegetation in carbon sequestration. Preserving urban vegetation, such as trees, can also significantly reduce carbon emissions. Urban vegetation can be found in two main locations: Urban Green Open Spaces (UGS) and Road Landscapes (RL). In Denpasar Bali, Glodokan Tiang or Polyalthia longifolia trees are planted at those locations. Data management and carbon stock calculation mechanisms are required to demonstrate the contribution of urban vegetation in terms of carbon sequestration. The technology of Unmanned Aerial Vehicle (UAV) can be used as an alternative to efficiently calculate the estimated carbon stock. The calculation uses the Diameter Breast High (DBH) value approach using the canopy area and Canopy Height Model (CHM) obtained from UAV data processing using the Sfm method. UAV estimates show that the highest Above Ground Biomass (AGB) value at Bajra Sandhi Renon Field is 201.59 kg with a stored carbon content of 94.75 kg, while on I Gusti Ngurah Rai Bypass has the highest AGB value of 215.04 kg with a stored carbon content of 101.07 kg. These results have been validated by field observations, where the results of the regression analysis at the location of Bajra Sandhi Renon and I Gusti Ngurah Rai, show that between field observation data and estimation data with UAV there is no significant difference. While the results of the t-test: Paired Two Sample for Means at the Bajra Sandhi Renon Field and the Bypass I Gusti Ngurah Rai have a value above the significance level which proves that there is no significant difference between the carbon stock value from field observations and the carbon stock from the UAV approach. Keywords: Carbon Stock; Above Ground Biomass; Urban Vegetation; UAV-Sfm
THE ACCURACY OF GILILAWA DARAT WILDFIRE SPREAD ESTIMATION USING BURN SEVERITY AND WRF-SFIRE MODEL Imam Barnadi; Takahiro Osawa; I Wayan Nuarsa
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 17 No 1 (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.i01.p09

Abstract

In this research, the origin of the wildfire area is assessed by using the potential of burn severity and the WRF-SFIRE model. This research focuses on the mountainous savanna region, by taking the case of the Gililawa Darat wildfire event. The most accurate index among Sentinel-2B optical burn severity indices, i.e. dNBR, MIRBI, dMIRBI, CSI, dCSI, NDVI, dNDVI, EVI, and dEVI and among Landsat-8 OLI/TIRS thermal and mixed burn severity indices, i.e. LST, dLST, LST/EVI, and d(LST/EVI) was used to map the areas with low burn severity, an indication generally found at origin area. A series of fire spread simulation from these areas was conducted using WRF-SFIRE to assess the accuracy of each simulation in reproducing the burned area. The burn severity accuracy assessment showed that dNBR and dCSI indices had the highest value of Overall Accuracy and Kappa Hat Coefficient, i.e. 91.67% and 0.889 (almost perfect agreement). However, dNBR was the most suitable index for mapping burn severity in the region due to its goodness-of-fit measure for linear regression model with the R-squared value of 0.7856. The assessment of thermal and mixed burn severity indices based on Landsat-8 OLI/TIRS resulted in LST, LST/EVI, and d(LST/EVI) gained the same overall accuracy of 58.33% and Kappa Hat Coefficient of 0.444 indicating moderate agreement, whereas dLST performed poorer than these indices. However, it is not recommended to use these burn severity indices in the region due to the nonlinearity of severity level with the index value. According to WRF-SFIRE simulations result, it was found that fire ignition started from low burn severity area coordinates which have a distance of 0 to 334 metres from the origin area resulting in fire area witan h overall accuracy value range from 77.04% to 81.90% and Kappa Hat Coefficient value range from 0.536 to 0.626. The simulation from the origin area resulted in an overall accuracy of 81.57%, a Kappa hat coefficient of 0.613, underestimated burned area ratio of 0.08, overestimated burned area ratio of 0.23, and a backing fire perimeter difference ratio of 0.4 to the reference. Keywords: wildfire; Gililawa Darat; wildfire spread; burn severity; WRF-SFIRE, fire origin area

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