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Journal : Ecotrophic, Journal of Environmental Science

ANALISIS KUALITAS FISIKA PERAIRAN BERDASARKAN NILAI PADATAN TERSUSPENSI DAN KEKERUHAN PERAIRAN DI BENDUNGAN TELAGA TUNJUNG DESA TIMPAG, KECAMATAN KERAMBITAN, KABUPATEN TABANAN – BALI Dewa Gde Tri Bodhi Saputra; I Wayan Arthana; Made Ayu Pratiwi
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 (249.032 KB) | DOI: 10.24843/EJES.2016.v10.i02.p08

Abstract

Telaga Tunjung reservoir has a function for irrigation for around 1.335 Ha irrigation land. Beside, also for supplying clean water to the household in 6 village in Selemadeg District, 2 village in Kerambitan District and 1 village in Tabanan District. The clean water also used in Soka tourism area and in Berembeng village. Telaga Tunjung reservoir also used for water resources conservation. This research aim to know total suspended solid at Telaga Tunjung reservoir as a reference for reservoir management. The method of this research were survey method and laboratory analyzing. The results of TSS in Telaga Tunjung reservoir were 2.667-91.278 mg/L. The lowest value of TSS was in January and the highest in February. The condition of TSS was in January (no rain). The difference between inlet and outlet was 19.051 mg/L or 61,22 %. In the downstream of reservoir, the TSS was getting lower. In February the differences between inlet and outlet was 53.315 mg/L or 140,43 %. The TSS at inlet, upstream and outlet in February increased significantly compared that in January and March. In February there was some location that exceed the second class water standard of central Government Regulation Number 82 in 2001 and Bali’s Governor Regulation number 8 in 2007.
ANALISIS KUALITAS AIR DANAU SEBAGAI DASAR PERBAIKAN MANAJEMEN BUDIDAYA PERIKANAN DI DANAU BUYAN KABUPATEN BULELENG, PROVINSI BALI I Wayan Rian Riki Saputra; I Wayan Restu; Made Ayu Pratiwi
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 11 No 1 (2017)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (202.55 KB) | DOI: 10.24843/EJES.2017.v11.i01.p01

Abstract

LAKE WATER QUALITY ANALYSIS AS A IMPROVEMENT BASIS OF AQUACULTURE MANAGEMENT IN BUYAN LAKE REGENCY OF BULELENG, BALI PROVINCE Buyan Lake is one of the lakes in Bali province. That located at Pancasari Village, District of Sukasada, Buleleng Regency. This lake they are many utilication of the lake such as agriculture, tourism and aquaculture activities. Those activities are considered to contribute an eutrophication in this lake. In order to investigate the effect of of floating net cages activity in Buyan Lake, the research about “The Analysis of Water Quality as a Basic Improvement of Aquaculture Management in Buyan Lake” was conducted This research method used in this study was done by observation method and took the samples in situ (at Buyan Lake site) and samples analysis was done by ex situ (at UPT. Laboratorium Kesehatan Propinsi Bali). They were 2 water quality parameters such as some physic parameters (temperature, clarity and turbidity) and chemistry parameters (pH, DO, ammonia, nitrate, BOD, COD, sulfide and phosphate). The data analysis of this research was analysis conducted by STORET index and pollution index (PI). Base on the analysis using STORET index, pollution status in Buyan Lake was heavily contaminated with average score of -82. The highest score was obtained in station 3 (-98). The results of pollution index showed that Buyan Lake has a lightly contamination with average score 3,4347 whereas the highest pollution index score was obtained in sation 4 (3.8673).
KEANEKARAGAMAN LAMUN DAN MAKROZOOBENTOS SEBAGAI INDIKATOR KONDISI PERAIRAN PANTAI SINDHU, SANUR, BALI I Made Sara Wijana; Ni Made Ernawati; Made Ayu Pratiwi
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 (292.076 KB) | DOI: 10.24843/EJES.2019.v13.i02.p11

Abstract

Sindhu Beach is part of the Sanur beach area. Sanur area is one of 11 strategic national tourism areas in Bali. Beach tourism activities have the potential to cause degradation of coastal ecosystems. Ecosystem changes can be determined using bioindicators. This study aims to determine the condition of the Sindhu Coast waters ecosystem based on seagrass diversity and macrozoobenthos as indicators. This research was conducted in November 2019 at Sindhu Beach. Seagrass observations and macrozoobenthos sampling were carried out at four stations with three replications at each station. Data and samples were collected using the quadratic transect method. Eight species of seagrass were found in Sindhu Beach with a percentage of cover between 16.33% - 63.37% and density between 1572 ind / m2 - 3314.4 ind / m2. The average value of the seagrass diversity index was 1.24, the average uniformity index was 0.78, and the average dominance index was 0.32. Types of macrozoobenthos found were 23 species with abundances ranging from 2.33 ind / m2 - 28.33 ind / m2. The average value of macrozoobenthos uniformity index is 1.50, the average diversity index is 0.68 and the average dominance index is 0.36. Based on the index value shows that the waters of Sindhu Beach are in good condition or there is no ecologically significant pressure.
KESESUAIAN EKOSISTEM TERUMBU KARANG UNTUK KEGIATAN WISATA SELAM DI NUSA LEMBONGAN, BALI Made Ayu Pratiwi; Ni Made Ernawati; Ni Putu Putri Wijayanti
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 15 No 1 (2021)
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.2021.v15.i01.p01

Abstract

Nusa Lembongan islands, Bali have a potential of coral reef diversity. Coral reefs have both ecological and high economic potential so that they are widely used. The economic benefits of coral reefs make these ecosystems very vulnerable to pressure from human activities. One of these human activities is the use of coral reefs in diving tourism activities. This research aimed to determine suitability and carrying capacity of coral reef ecosystem on Nusa Lembongan Island so that it can be recommended to manage coral reef ecosystem strategies to support the use of diving tourism. This study was conducted on six dive sites as observation points Observations on coral reef ecosystems were carried out using the intercept transect (LIT) method, and reef fish observation was carried out using the fish visual census method. Water quality sampling will be done in situ. Diving suitability was carried out by estimating the tourist suitability index (IKW) of six parameters, namely the brightness of the waters, coral community cover, coral life form, reef fish species, coral reef depth and current. The tourism suitability index value for the diving tourism category obtained was 74.07% (Jack Mangrove); 57.41% (Crystal Bay); and 61.11% (Manta Bay). The value for each observation point is included in the appropriate category of 50% -75%. It can be interpreted, that all observation points which are dive sites in Nusa Lembongan have supported diving tourism activities.Keywords: Tourism Suitability Index; Diving; Nusa lembongan.
STRUKTUR KOMUNITAS EKOSISEM PADANG LAMUN PADA DAERAH INTERTIDAL DI PANTAI SANUR, BALI Made Ayu Pratiwi; Ni Made ERNAWATI
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 12 No 1 (2018)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (154.08 KB) | DOI: 10.24843/EJES.2018.v12.i01.p07

Abstract

Coastal ecosystem is a productive ecosystem and has high ecological and economic value. Coastal ecosystem components, consist of coral reefs, seagrass beds, mangroves and various types of biota. The seagrass ecosystem is one of the most unique coastal ecosystems because the seagrass can live well in high salinity conditions. Seagrass ecosystem in Bali Island has many adventages and widely used for marine tourism activities. One of the marine tourism sites, that take advantage of the beauty of the seagrass ecosystem in Bali is Sanur beach. The utilization of seagrass ecosystem for marine tourism activities might be influence the structure of seagrass community. Therefore, the study about Community Structure of Seagrass Ecosystem at Intertidal Area in Sanur Beach is very important to carried out in order to investigate the structure of the seagrass ecosystem community. Samples were taken in the intertidal zone at six observation stations. At each station, it was conducted three times perpendicular repetition to the shoreline. Seagrass observation was done by using quadratic transect (50 × 50 cm). The types of seagrass found in Sanur Beach were 6 species, namely Cymodocea serrulata, Cymodocea rotundata, Halophila ovalis, Halodule uninervis, Halodule pinifolia, and Syringodium isoetifolium. Cymodocea serrulata is a seagrass-type found in every observation station, and it able to live well in Sanur Beach water characteristics. The highest average of seagrass species density is shown by the Cymodocea serrulata species of 175.11 stands/m2, while, the highest average of seagrass species density is shown by the Halodule pinifolia species of 27.33 stands/m2. The average of diversity, uniformity and dominance index at Sanur Beach reach 0.8682; 0.7347; and 0.4987, respectively. In Sanur Beach area, the seagrass has high uniformity value and stable community. The instability community has been found at station 2 when the dominance of Cymodocea serrulata species was occurred. Keywords: Community structure; Sanur Beach; seagrasse cosystem
PENILAIAN STATUS DOMAIN SUMBER DAYA IKAN LEMURU DENGAN PENDEKATAN EKOSISTEM YANG DIDARATKAN DI PPI KEDONGANAN, BALI Ketut Tika Suariningsih; I Wayan Restu; Made Ayu Pratiwi
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 15 No 2 (2021)
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.2021.v15.i02.p08

Abstract

PPI Kedonganan is a fish landing base located in Kedonganan Village, Kuta District, Badung Regency. One of the fish commodities that landed at PPI Kedonganan is Lemuru Fish (Sardinella lemuru). The high rate of catching Lemuru must be balanced with proper management so that Lemuru Fish Resources remain sustainable. This study was conducted to determine the status of the utilization of Lemuru fish resources. The study was conducted from January 2021 to March 2021. Data collection was carried out by observation and interviews. Data analysis of each indicator was carried out using a multi-criteria analysis approach with composite index assessment and visualization by flag model. Indicators were observed the trends of fish size, the proportion of juvenile fish were caught, the species composition, range collapse of fish resources, Endangered, Threatened, and Protected species. The status assessment of the Lemuru resource domain which landed at PPI Kedonganan is in the good category with a composite value of 66.7. Results of the trend indicators of fish size is relatively fixed, the proportion of fish juvenile caught about 90%, the composition of species caught was 100% of the target fish i.e, lemuru that caught by using gill net, range collapse of fish resources as much as 57% of fishermen expressed relatively fixed in looking for fishing grounds, and ETP species not found. Keywords: EAFM; Lemuru Fish; Fisheries Management; PPI Kedonganan.