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Bumi Lestari
Published by Universitas Udayana
ISSN : 14119668     EISSN : 25276158     DOI : https://doi.org/10.24843/blje
Core Subject : Humanities, Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Humanities Earth & Planetary Sciences Energy Environmental Science
Bumi Lestari Journal of Environment (p-ISSN: 1411-9668; e-ISSN: 2527-6158) is a peer-reviewed journal, presents original research articles and letters in all areas of environmental studies and environmental sciences (biotic, abiotic and social/cultural). This journal has been indexed by cabdirect cabi.org, AJD (Academic Journals Database), ISJD (Indonesian Scientific Journal Database), IndexCopernicus, Portal Garuda, researchBib and Google Scholar. The journal is published by Environmental Research Center (PPLH) of Udayana University. The journal is published two times a year: February and August in both printed and online versions. The online version is free access and download. This journal is devoted to publish research papers such as environmental biology, environmental physics, environmental health, ecology, geosciences and environmental chemistry including such matters as land, water, food, conservation, population, risk analysis, pollution, energy, economics of ecological and non-ecological approaches, social advocacy of arguments for change, analytical methods, legal measures, implications of urbanism, energy choices, waste disposal, health effects, recycling, transport systems, political approaches, social impacts and other issues of mass society. There is concern also for marginal areas, under-developed societies, minorities, species loss, etc. The purpose of this journal is to provide input and its solution to the environmental problems that has happened or will be happen from the results of researchs.
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Ilmu Lingkungan (Lain-Lain)
Articles 445 Documents
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ANALISIS STRUKTUR VEGETASI HUTAN MANGROVE DI KAWASAN REKLAMASI PULAU SERANGAN, KOTA DENPASAR I Ketut Sundra
Bumi Lestari Journal of Environment Vol 6 No 1
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

This research was conducted in Serangan island in August, 2004. Ten plots assampling units were taken using Systematic Plot Design. Two parameters : ImportanceValue and Diversity Indices were determined on vegetation analyses. Samples were takenfrom three different locations. Soil analysis was conducted for determining macro elementscontent, such as: N, P, K and others organic maters.The result shows that there are 13 species of mangrove found. Five species areclassified into ‘pure’ mangrove and others are associate. Rhizophora apiculata (withImportant Value, IV, of 103.252 %) and Sonneratia alba (IV 99.663 %) are two species thathave high importance value (IV). In addition, the diversity of mangrove in Serangan islandis found to be low (diversity indices 0.791).Results of this study indicate that after reclamation, the mangrove ecosystem inSerangan is in unstable conditions.
BIODEGRADASI DODECYL BENZENA SULFONAT DALAM SISTEM LUMPUR AKTIF I Wayan Budiarsa Suyasa; Ni Putu Diantariani
Bumi Lestari Journal of Environment Vol 9 No 1 (2009)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

The research about biodegradation of dodecyl benzene sulfonat ( DBS) has been conducted by using bacterium of sediment of Tebe River in Denpasar. Goals of research were to determine curve of growth bacterium in DBS media and its ability to degradation of DBS. Determination of research consist of exponential phase of bacterium, measurement of volatyl suspended solid (VSS), biologycal oxygen demand (BOD), and biodegradation rate of DBS. Isolate that isolation from Tebe River of Denpasar was seed in DBS media (1g of DBS ;1,5g of NPK ; and 0,2 g of MgSO4.7 H2O to dissolved in 1 L aquadest) with control of growth by measurement of VSS during 12 hours. Active mud that seeding was used to treat of waste water with DBS content. Counted 200 ml active mud in exponential phase, enhanced by 800 ml of waste with DBS content. Measure value of BOD and DBS content, and analysis its rate of decrease. Result of the research indicate that exponential phase of bacterium at an hour of eight with value of VSS equal to 1421,73 mg /l. During treatment of waste, value of BOD and DBS has decreased from initial. Rate of BOD decrease happened to 3 days that following equation is y = - 0,167 X + 3,932 with rate of decrease is 0,167 mg /l. Rate of degradation of DBS quickly, is indicated to 3 days by following fast equation is y = - 0,306X + 6,714 with rate of degrade equal to 0,306 mg /l.
PEMANFAATAN LIMBAH AIR KELAPA MENJADI PRODUK COCO CIDER : KAJIAN PENAMBAHAN GULA DAN WAKTU FERMENTASI Luh Putu Wrasiati
Bumi Lestari Journal of Environment Vol 13 No 1 (2013)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

AbstractThe coconut waste water contain some nutrients, micronutriens, and minerals such as vitaminC, biotin, riboflavin, folic acid, amino acid, carbohydrate, calcium, phosphorous and iron.The product of coconut waste water is popularly known as nata-de-coco. Besides that, thecoconut waste water can also produced as alcohol beverages like coco cider. This researchwas conducted in order to observe the effect of sucrose addition and fermentation time onthe characteristics of coco cider, and to determine the best characteristics of coco cider.This research is expected to provide the information about the amount of sugar should beadded and fermentation time in production of coco cider. The design experiment used in thisresearch was the randomized complete design with two factors, i.e. the ratio of sugar added(5, 10, 15, and 20%) and the fermentation time (2, 4, and 6 days). The variables observedincluded alcohol content, total sugar content, pH, and sensory evaluation such as taste,aroma, and overall acceptance. The results indicated that the interaction between sucroseaddition and fermentation time significantly affected the alcohol content and total sugarcontent of coco cider, the more the sucrose added and the longer the fermentation time, thehigher the alcohol content and the less the total sugar content. The sensory evaluationindicated that the good coco cider was produced from 10 percen of sucrose and fermentedin two days with the characteristics: the score of taste, aroma and overall acceptance wasbetween 3 and 4, alcohol content was 5.3, pH was 3.9, and total sugar content was 10.75percents.
PERBANDINGAN ANTARA INFORMASI SUHU PERMUKAAN LAUT DARI DATA SATELIT DENGAN HASIL PEMODELAN DI WPP NRI-716 Komang Iwan Suniada
Bumi Lestari Journal of Environment Vol 16 No 1 (2016)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/blje.2016.v16.i01.p05

Abstract

Sea Surface Temperature (SST) data and information recently become a valuableinformation since its association with the climate, oceanography condition and fisherieshave been discovered.  Unfortunately, SST information using satellite imagery frequentlyconstrained by atmospheric cloud cover since satellite sensor disability to gather any landor ocean surface information through the cloud.  Modeling data is very required to fill theblank data resulted from satellite imagery under cloudy condition.  This study conducted atSulawesi Sea to North Halmahera which is included to Fisheries Managing Area (FMA)716, to find out the strength and direction relationship between SST model and SST satellite.Result indicates there is a strong and same direction relationship between SST model andSST satellite (r=0.704, n=1516) with 0.2C diferrence so that SST model can be used to fillor substitute the blank of SST satellite.
SHRIMP FARMING OF BLACK TIGER SHRIMP WITH ZERO WATER EXCHANGE MODEL USING MOLASSES AS CARBON SOURCES Pohan Panjaitan
Bumi Lestari Journal of Environment Vol 11 No 2 (2011)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

Penelitian bertujuan untuk: (1) mengevaluasi parameter kualitas air dan produksi udang windu pada tambak dengan model tanpa pergantian air dan menggunakan molases, dan (2) mengkaji keterkaitan antara parameter kualitas air dan produksi udang dengan tingkat perbandingan C:N melalui penggunaan molasses. Penelitian dilakukan di tambak udang windu Darwin, Australia selama dua siklus produksi dengan model tanpa pergantian air dan menggunakan molasses. Metode pengumpulan data yang digunakan adalah metode pengamatan lapang terhadap kualitas air (suhu, pH, kadar oksigen terlarut, ammonia, nitrite, nitrate dan kelimpahan jumlah bakteri heterotrofik). Analisis kualitas air dilakukan di laboratorium kualitas air pada Universitas Darwin Australia. Sedangkan data parameter produksi udang diperoleh dari perusahaan PT.Ardetex. Untuk melihat keterkaitan antara parameter kualitas air dan produksi udang dengan level perbandingan C:N maka studi ini menggunakan analisis regresi berganda. Studi menunjukkan bahwa: (1) kualitas air di tambak tanpa pergantian air menggunakan molasses masih mendukung kehidupan udang; (2) tingkat produks udang di tambak tanpa pergantian air menggunakan molasses tidak berbeda pada tambak dengan sistem pergantian air; (3) tingkat perbandingan C:N cenderung berkorelasi negatif dengan konsentrasi ammonia, nitrit, oksigen terlarut dan pH tetapi cenderung berkorelasi positif dengan kelimpahan bakteri heterotrofik; dan (4) pertumbuhan udang tidak berkorelasi dengan tingkat perbandingan C:N.
KAJIAN KESESUAIAN LAHAN UNTUK MENDUKUNG PENGEMBANGAN KOMODITAS PERTANIAN DI WILAYAH PERBATASAN NEGARA REPUBLIK INDONESIA (Studi Kasus di Kabupaten Merauke, Provinsi Papua) Muh. Aris Marfai; Ahmad Cahyadi
Bumi Lestari Journal of Environment Vol 12 No 2 (2012)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

This research aims to analyze the land suitability in the national border on Olikobel District, Merauke District, Sota District, and Naukenjarai District which are located in the eastern national border of Indonesia. Land suitability analysis conducted in this research is focused for the rice farming and rubber planting. Using the land unit as the basic of the analysis and the required characteristics of the area for growing the plants, comparison study has been done to match the land condition and its requirement to grow. The result of this research has shown various land suitability for growing the plants. For rubber plant, the best location for growing is located in the Sota and Olikobel District, which area extends of 140,942.5 hectares. Due to the drainage and flooding, several parts of the research area are considered has low suitability to grow the rubber plants. As the results, various classes of land suitability for rubber plants consist of S1, S2b, S2se, S3wf, Nwf dan Nwft are found in the research area. For rice farming, Marauke District is considered has the most suitable area to grow the rice, in which the area extends for 9,948.52 hectares. Drainage and flooding also becomes the limitation factor of the land suitability, causing various classes of land suitability for rice farming, namely: S1, S3w, S3wt, S3ws, S3wse, S3wtse, Nt, Nws dan Nwt. Therefore, proposed method in drainage management area is required. With the improvement in the soil drainage is predicted to increase the extents of most suitable area (S1) to be 147,883.28 hectares.
STUDI KUALITAS PERAIRAN BEBERAPA SUNGAI DI KABUPATEN BADUNG I Made Sara Wijana
Bumi Lestari Journal of Environment Vol 3 No 2
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

A study on water quality of some rivers in Badung Regency (Dangkang River inBeringkit, Penet River in Ayunan, Mati River in Kuta, as well as Ayung River in Carang Sariand Bongkasa) was carried out in dry and wet seasons 2002. Aim of the study is to find thewater quality of those rivers benchmarked with Governor of Bali decree (decision) No.515/2000.Results of the study showed that water quality of Mati River is the worst. There areseven parameters in this river which did not pass the benchmark, namely odor, taste,phosphate, DO, fat, Fecal coli (E. coli) and coliform. Meanwhile, Ayung river had threeparameters (phosphate, fat and TDS), and Penet as well as Dangkang Rivers had twoparameters only (phosphate and fat) which didi not pass the benchmark. Water from all riverare found to be polluted by phosphate and fat either during dry or wet seasons.
Pemisahan Ion Krom(III) dan Krom(IV) Dalam Larutan Dengan Menggunakan Biomassa Ganggang Hijau Spirogyra subsalsa Sebagai Biosorben. Mawardi Mawardi; E. Munaf; S. Kosela; Widayanti Wibowo
Bumi Lestari Journal of Environment Vol 14 No 2 (2014)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

Characteristic of biosorption of chromium(III) and chromium(VI) by green ganggange Spirogyrasubsalsa sp. biomass was investigated in a batch system. Based on FTIR spectroscopyspectra can be concluded that the biomass of green ganggange S. Subsalsa containingcarboxylate groups, amines, amides, amino, carbonyl and hydroxyl, in addition to thecompounds of silicon, sulfur and phosphorus. The results showed that the capacity biosorpsistrongly influenced by solution pH, contact time and initial concentration of the solution. Themaximum sorption of Cr3+ cations was seen at pH 4,0 and than constant at the higher pH. Biosorption of Cr6+, exist as Cr2O72- anion, decrease by increase of solution pH. The maximumbiosorption capacity for Cr3+ and Cr ions are 1.82 mg (0.035 mmol) and 1.51 mg (0.029 mmol)per gram of dry biomass, respectively.  Rate of biosorption is relatively fast, with long intervalsof 30 minutes, each ion is absorbed approximately 95.7% and 86.5%. Absorption is alsoinfluenced by rapid mixing of biomass, while the factors of particle size and heating biosorbenbiomass absorption is less affected.
Analisis Daya Tampung Beban Pencemaran Kali Asem di Sekitar TPST Bantar Gebang dan TPA Sumur Batu Opy Kurniasari; Lina Aprianti
Bumi Lestari Journal of Environment Vol 20 No 1 (2020)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/blje.2020.v20.i01.p04

Abstract

The amount of waste management, especially in big cities and metropolitan areas, forms the basis for various policies. One of them is the Law of the Republic of Indonesia Number 18 Year 2008 concerning Solid Waste Management which mandates cooperation and partnerships between local governments, business entities, and the community in carrying out waste management. The carrying capacity of the environment should be one of the considerations in the preparation and determination of environmental management and recovery plans. However, in its implementation, the calculation of environmental carrying capacity is not easy. Therefore, planning is not based on environmental capability, but existing conditions, which are likely to have experienced degradation or exceeded carrying capacity. This condition is expected to cause a decrease in the carrying capacity of the environment around the Bantar Gebang TPST and Sumur Batu TPA, one of which is the Kali Asem river. Based on this, it is necessary to analyze the assimilative capacity of Kali Asem pollution around the TPST and TPA. The purpose of this study was to analyze the capacity of Asem River pollution load so that the ability of the environment in the area around TPST Bantargebang, Bekasi City to support the lives of humans and other living things. The results of laboratory analysis showed that at the initial sampling point, Kali Asem was already in a polluted condition which is characterized by high levels of BOD and COD.
SOCIAL-ECONOMIC ASPECTS OF COASTAL COMMUNITY THAT INFLUENCE MANGROVE FOREST DEGRADATION IN SECANGGANG VILLAGE LANGKAT REGENCY Tavi Supriana
Bumi Lestari Journal of Environment Vol 10 No 1 (2010)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

The objective of this study is to analyze social-economic aspects of coastal community that influence mangrove forest degradation. Analysis is conducted for coastal community members who earn their living thru mangrove tree cutting activities. Method used is multiple linear regression analysis. The result shows that social factors (educational level, environmental knowledge level and cosmopolitan level) seem to have a significant effect on the degradation of mangrove forest. Increasing educational level and cosmopolitan level can reduce the level of mangrove deforestation. Economic factors (income and number of dependants) also have a significant role on the loss of mangrove forest. Thus, income improvement can reduce deforestation. Implications of this study are: (1) in order to reduce degree of mangrove forest degradation, the coastal community should be released from their economic dependency to mangrove forest and should be given better access to other various income sources. (2) to increase awareness of the importance of role and function of mangrove forest thru elucidation (extensive service) or visualization of the effect of degradation caused by deforestation activity which do not concern the sustainability and continuity of mangrove forest. (3) to manage regulation and monitoring system by regency government to mangrove forest product industry.

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