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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 11 Documents
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Search results for , issue "Vol 8 No 1 (2014)" : 11 Documents clear
SPESIASI DAN BIOAVAILABILITAS LOGAM Pb DALAM SEDIMEN DI KAWASAN PESISIR SANUR Sri Dian Meita Sari; I Gusti Agung Gede Bawa
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

Total content of Pb metal in sediments has been reported or published frequently, but it could not provide information about various forms of metals contained in sediments and did not show the true metal concentrations involved in the process of bioaccumulation by organisms. Therefore, this study was aimed to determine the bioavailability of Pb metal and speciation the metal in various forms or compounds existing in the sediments. A quantitative analysis of total metal content, Pb in the sediments was initiated performing the digestion method using the mixture of HNO3 and HCl (3:1) in ultrasonic bath at 60 0C for 45 minutes, and continued heating on a hotplate for another 45 minutes at 140 0C. Moreover, analysis of Pb metals as bioavailability fraction was perfomed by single extraction method of EDTA and HCl, while for metal speciation fractions on each phase using Sequential Extraction Technique. Consequently, the metal concentrations of digestion and extraction solutions were measured by using an atomic absorption spectroscopy (AAS) technique with the aplication of calibration method. The total concentrations of Pb in sediments collected from Sanur Beach ranged from 139,9945 to 260,1521 mg/kg. The highest bioavailability of Pb obtained in sediments at site II (Sindhu Beach), in which the Pb extracted from sediments was 21.44%. Generally, the Pb metal associated in the sediments at Sanur Beach was bounded in oxidisable organic fraction (2.08 – 3.50%).
ANALISIS TINGKAT KERUSAKAN DAN STRATEGI PENGELOLAAN MANGROVE DI KAWASAN SUAKA PERIKANAN GILI RANGGO TELUK SERIWE KABUPATEN LOMBOK TIMUR NUSA TENGGARA BARAT Mohammad Subhan; Made Antara; 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

GiliRanggoFisheryReserve Areais one of conservation areaestablished throughthe Regional Regulationof East Lombok, West Nusa Tenggara number10year 2006 onRegionalMarine ProtectedArea Management(RMPAM). Sincethe enactment ofthereserve fisheries zone, managementsystemis not yet optimizedeitheronthe mangrove protected areasandstakeholdercommitmentto theconservationefforts ofthemangrove resource. The purpose ofthis study were 1) to analyzethe extent of mangrove damageinGiliRanggoFisheryReserve Area, 2) to find out perceptions of stakeholderson the management ofmangrovesin the area of GiliRanggoFishery at the reserve area, 3) to formulatea sustainablemanagementstrategyinvolvingallstakeholders. This study useda combination ofqualitativeandquantitativeapproaches. Data analysis methodsused include: vegetationanalysis, qualitativeanalysisandSWOT analysiskatagorik. The results showed that the destruction level of mangrove damage at GiliRanggoFishery Reserve Areaon seedlings and saplings phase are trees are relatively minor with density <50% and widespread closure> 1,500 trees/ha, whereas severely damaged represented by closure <50% and a density of <1,000 trees/ha. Mangrove vegetation in the GiliRanggoFishery Reserve Areais not classified as critical represented by the Total Value Scoring (TNS) = 370. Society supports the efforts to conserve the mangrove, as people realize the key benefits of mangroves. Violations that occurred during this due to people not knowing the rules of forbide on harvesting mangrove. The formulation of mangrove management strategies in GiliRanggoFishery Reserve Area consists of SO strategy: maximizing the primary function of mangroves and management principles tailored to the status of the area, ST strategies: increase public knowledge about environmental management and improve the economy of the community, WO strategies: increasing community involvement and increasing the studies and research in the management of mangroves in GiliRanggoFishery Reserve Area, WT strategies: joint management plans involving all stakeholders, improve supervision and monitoring
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
PENGEMBANGAN FITOREMEDIASI UNTUK MENINGKATKAN KUALITAS AIR LIMBAH HASIL PENGOLAHAN INSTALASI PENGOLAHAN AIR LIMBAH SUWUNG N.L.P Mahendra Dewi; Made Sudiana Mahendra; I.W. Budiarsa Suyasa
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

Growing population and tourism activity in Bali Island increases quantity of waste water and resulting in degradation of sanitation quality, especially in the growth centre such as Kuta, Denpasar and Sanur areas. Suwung Waste Water Treatment Plant is one of facility available for domestic waste water in Bali. It needs improved treatment to process domestic waste water before it releases to the environment. Phytoremediation is one of treatment that use plant to coorporate with microorganisms in medium to transform contaminants becoming harmless. This research was conducted from June – August 2012 in Suwung Wastewater Treatment Plant using Taro plant and media form of pebbles and small natural stone. Acclimatized plant was prepared to make sure it can be ascertained and able to grow in tubs processing. Samples were taken 7 times in 24 hours, aiming to know effectiveness of phytoremediation system and to determine the most optimal detention time to reduce concentration of BOD, COD and Amonia. The result showed that treatment with phytoremediation system was effective for the reduction of BOD value with the highest effectiveness value of 84.29%, COD obtained the highest effectiveness value of 78.19% and ammonia got highest effectiveness value of 83.12%. Calculation of most optimal detention time for waste water was 6 hours for BOD, while for COD was obtained after 8 hours and 10 minutes and ammonia was obtained after 8 hours and 9 minutes. Comparison of result of waste water quality with waste water quality standard according to Bali Governor Act Number 8, year 2007, BOD and COD concentration complied the quality standard but for ammonia parameter was above waste water quality standard.
STUDI PENENTUAN LOKASI UNTUK PENGEMBANGAN BUDIDAYA RUMPUT LAUT DI WILAYAH PERAIRAN TELUK SALEH, SUMBAWA, NTB Komang Iwan Suniada; Muji Wasis Indriyawan
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

This study was carried out to support the strategic plan of the Ministry of Marine Affairs and Fisheries of Republic of Indonesia that seeks to increase fisheries production through the aquaculture, especially by developing seaweed cultivation around Sumbawa regency. Objective of this study is providing information of potential area for seaweed cultivation around Teluk Saleh water territory, Sumbawa Regency, Nusa Tenggara Barat. Remote sensing data (Terra/Aqua MODIS and Landsat satellite image), field survey data and secondary data were used for this study. Remote sensing data were used to produce Sea Surface Temperature, Chlorophylla information and mapping of bottom substrate, field survey data provided nitrate, phosphate, salinity, pH, DO, TDS, flow velocity, water transparency while secondary data was used to provide bathymetry information. Geographical Information System software was used to analyze this study by using overlay technique for all parameter, which had previously been weighted and scored based on the criteria of aquatic habitat suitability for seaweed cultivation. Higher scoreindicates that the areamoresuitableforseaweed cultivation activities. The results showedthat thepotential areasuitablefor seaweed cultivation activitiesaround Teluk Saleh water territory, Sumbawa Regency, Nusa Tenggara Barat is about 25.532,57 Ha.
EFEKTIVITAS SISTEM BIOFILTER AEROB DALAM MENURUNKAN KADAR AMONIA PADA AIR LIMBAH Ni Made Indra Wahyuni; I Wayan Budiarsa Suyasa; I Gede Mahardika
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

The increasingpopulationand activity of the Balinese people can increase the amount of waste as a byproduct of community activities. The presence of the metabolites in wastewater as ammonia is toxic to aquatic organisms. Application aerobic biofilter system can be used as an attempt to reduce levels of ammonia. In the aerobic biofilter, contact between the gravel media with microorganisms that form biofilmsare able to accelerate the degradation of organic matter and nitrification processes. The aims of this research are to determine the best consortium of activated sludge to reduce ammonia levels by aerobic biofilter system and to determine the effectivity of aerobic biofilter system. The first stage of this research were seeding of activated sludge from three sources are Wastewater Treatment Plan (WWTP) of Suwung Denpasar, WWTP of Wangaya Hospital and WWTP of Bali Tourism Development Corporation (BTDC) Nusa Dua Bali, for six days. This research was done by measuring Volatile Suspended Solid (VSS) value that showed the growth rate of biomass in activated sludge. The second stage wereapplication of activated sludges and control in aerobic biofilter to reduce ammonia levels, for five days. This study used a Completely Randomized Design with four treatments and three repetitions. The results showed that the best activated sludge obtained from WWTP of Suwung Denpasar indicated by the highest biomass growth (VSS value) of 2396.6 mg/L and was able to reduce ammonia up to 0.78 mg/ L. The effectivity of aerobic biofilter system with activated sludge from WWTP of Suwung Denpasar achieve effectivity of treatment process up to 92.20 % and have been able to pass the effectivity of quality standards (90%) during five days of processing. The effectivity levels was the highest compared to control and activated sludgetreatments.
KAJIAN KERUSAKAN DAN STRATEGI PENGELOLAAN TERUMBU KARANG DI KAWASAN KONSERVASI LAUT DAERAH (KKLD) GILI SULAT DAN GILI LAWANG LOMBOK TIMUR NUSA TENGGARA BARAT Ahmad Subhan; I.P.G Ardhana; Joko Wiryatno
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

Coral reef and its life within is a high value natural resources. Management of KKLD GiliSulat-GiliLawas has been going for 8 years, however the management was still not maximal, in particular on preservation of coral reef ecosystem in the conservation area, and community commitment in managing and conserving fish resources and other biota. Therefore, to improve management planning, study need to be done with the aim to find out destruction level of coral reef at KKLD GiliSulat – GiliLawang, based on coverage percentage, fishermen, private sector and government perception. Also to identify policy related with coral reef management in this area, then to formulate its management strategies. Results of the survey shows that in general, average condition of the coral reef in this area is fair (lifeform= 49,26%). Recommended management strategies in KKLD GiliSulat-GiliLawang include SO strategies (Strength - Opportunity) which are coral reef management should be based on ecotourism, increasing community involvement in managing the coral reed and improve institutional strength of KPPL, and maximizing function and task of UPTD KKLD. WO strategies (Weakness - Opportunity) are increasing monitoring, give training on coral reef conservation, improving partnership in management, and increasing quality and quantity of KKLD human resources. ST strategies are (Strength – Threats) socialization of regulation, increasing effective coordination among stake holder, accurate analysis of environmental impact and improve research and sustainable diversification on fishing businesses. WT strategies are (Weakness-Threats) compliance to law, involving all parties in every decision made and making a good coastal areas plan.
KAJIAN DEGRADASI LAHAN MANGROVE DI PESISIR DESA LABUHAN SANGORO KECAMATAN MARONGE KABUPATEN SUMBAWA Lalu Samsul Rizal; I.P.G Ardhana; Joko Wiryatno
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

The aims of the research was to determine the perceptions of stakeholders (Community, Government and Employers), to know the potential of mangrove species and determine the impact of mangrove degradation on fish and non-fish biota, at Labuhan Sangoro coastal village. This study was conducted for three months from April to June 2012. Data were analyzed descriptively using a Likert scale for the perception of stakeholders. Potential mangrove species was examined using transects and to determine the impact of mangrove degradation on species diversity of aquatic fauna associated with mangrove were obtained by observation of nonparticipant method. The results showed that perceptions of stakeholders towards preservation and conservation of mangrove land, the 87% strongly agreed, 66% agreed and 22% disagreed, government and employers 86% strongly agree, 78% agree and disagree 3%, but not yet to the application phase. The potential of mangrove type in the coastal village of Labuan Sangoro at Station 1, 2, 3, and 4 by R. mucronata and R. stylosa, Transect I dominated by Rhizophora mucronata, R. stylosa, R. apiculata, Sonneratia alba, Lumnitzera racemosa and Ceriops tagal, transect II by Avicennia marina, R. mucronata and R. stylosa, Transect III by A. marina and R. mucronata and transect IV by R. mucronata and R. stylosa. Fish eatch on the condition of low and high degradation condition, the dominant fish species caught is Beronang (Siganus sp), non-fish species dominated by Crab (Scylla serrata). The number of catches in the low mangrove land degradation conditions wais 2,609 species of fish and non-fish tail 4678, on the high mangrove degradation conditions, the fish catch was 1,090 and non-fish was 1,114. The diversity, uniformity and the dominance of species, classified in the category of low and moderate levels.
TINGKAT KERUSAKAN DAN STRATEGI PENGELOLAAN TAMAN HUTAN RAYA “PROF. IR. HERMAN JOHANNES” DI DESA KOTABES KECAMATAN AMARASI KABUPATEN KUPANG NTT Nixon Rammang; M. S. Mahendra; Budiarsa Suyasa
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

Prof. Ir. Herman Johannes Forest Park has suffered a serious damage from illegal logging and other destructives activities. This condition is worsened by lack of law enforcement and awareness on the importance of forest for the community. This study aims to determine level of damage from illegal logging, and formulate strategies to sustainably manageon the Prof. Ir. Herman Johannes Forest Park. Public perception was obtained by administering questionnaires and interviews through a purposive sampling method. The level of damage from illegal logging was assessed through identificationand measurement of damaged locations.SWOT analysis was used to formulate the management strategiesbased on identification of internal and external factors. Findings revealed that 5% of Prof. Ir. Herman Johannes Forest Park were damaged caused by illegal logging. The management of the Forest Park was challenged by illegal logging, forest encroachment, timber extraction for household use, slashing and burning practices, poor spatial planning, ineffective institutional arrangement, wildlife poaching, illegal grazing,and inadequate facilitates and staffs capability. In addition, there was lack of community involvement in the forest management. Aspects that appeared to require the most attention to improve the Forest Park includes consolidation of status and functions of the Forest Park, enhancement of surveillance and enforcement, improvement of the management effectiveness by establishing special division to manage the Forest Park, improvement of staffs capacity and infrastructures, rehabilitation of the damaged area, improvement of awareness to the impact of deforestation, and involvement ofindigenous and local communities on the Forest Park management (i.e. community-based forest monitoring, application of local wisdom in the forest management, community empowerment and economic development).
ANALISIS VEGETASI MANGROVE UNTUK STRATEGI PENGELOLAAN EKOSISTEM BERKELANJUTAN DI TAMAN NASIONAL BALI BARAT I Ketut Catur Marbawa; Ida Ayu Astarini; I Gede Mahardika
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

This research was conducted in the coastal areas of Bali Barat National Park in March-June 2012. The goal is to determine the composition and structure of mangrove vegetation in Bali Barat National Park, the extent of damage and the level of criticality of mangroves in the area of ?? Bali Barat National Park and to determine management strategies for sustainable mangrove ecosystems in Bali Barat National Park. This study employed observation method with Line Transect sampling techniques and Sample Plots (Transect Line Plot) which is perpendicular to the shoreline landward. Data were analyzed using analysis of vegetation. Results showed mangrove vegetation in Bali Barat National Park consists 5 families major mangrove with 13 mangrove species and 5 families with 5 species of minor mangrove. In Gilimanuk Bay Important Value Index (IVI) for the highest phase of seedling was Excoecaria agallocha by 78.00%, sapling phase C. tagal amounted to 91.61% and the phase of the tree was Sonneratia alba by 103.76%. Shannon Diversity Index (H’) of mangrove vegetation in Gilimanuk Bay between 0.3630 to 0.7419 with a low category. In Terima Bay the highest IVI phase of seedling was Ceriops decandra by 78.33%, sapling phase C. decandra by 162.41% and the phase of tree was E. agallocha amounted to 85.06%. H’ mangrove vegetation in Terima Bay between 0.0000 to 0.7889 with a low category. In Banyuwedang Bay the highest IVI phase of seedling was E. agallocha by 63.08%, sapling phase was Ceriops tagal amounted to 86.28% and the phase of tree was E.agallocha of 79.98%. H’ mangrove vegetation in Banyuwedang Bay between 0.0000 to 0.7889 with a low category. In Menjangan Island the highest IVI phase of seedling was C. tagal by 63.69%, sapling phase C. tagal amounted to 66.66% and the phase of tree was E. agallocha by 109.08%. H’ Menjangan Island mangrove vegetation ranged from 0.3991 to 0.8217 with a low category. The level of damage based on Mangrove Damage Criteria according to Minister of Environment Decree No. 201 of 2004 seedlings and saplings phase, the density of each species included in the very dense criteria (good) and phase trees included in the rare criteria (damaged). The critical level of mangrove vegetation based on the formulation of the Directorate General of Land Rehabilitation and Social Forestry, Ministry of Forestry in 2005, mangrove vegetation in the Bali Barat National Park can be classified Not Damaged. Bali Barat National Park mangrove aquatic environment is conducive to support the stability and development of mangrove vegetation in the future as a result of physical and chemical parameter measurements mangrove aquatic environment is still below of standard.

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