Gilimanuk Bay is a water area located in Melaya District, Jembrana Regency, West Bali Region. In this area, there are development and human activities that have an impact on the quality of the waters so that they interfere with the life of organisms such as macrozoobenthos. Macrozoobenthos can be the bioindicator that determining the condition in a water area. The decline of the macrozoobenthos community structure is an indicator of a disturbance in the ecosystem in these waters. The purpose of this research to know how community structure of macrozoobenthos and the condition of the water quality in Gilimanuk Bay. This research was conducted in June to July 2020. The research used the quantitative descriptive method, with 3 of the research stations. Based on the result of the research, it has found 45 species of macrozoobenthos that included from 5 classes, there are Gastropods, Bivalves, Crustaceans, Polychaeta and, Sipunculidea. The highest total abundance was at station 3, namely 534.33 ind/m2, station 1 is 522.00 ind/m2 and the lowest abundance is at station 2, namely 371.33 ind/m2. The diversity index obtained was classified as moderate, which ranges from 1.53-1.89, the uniformity index is classified as moderate, which ranges from 0.47-0.57, while the dominance index is low to moderate, which ranges from 0.29-0.44. Based on the macrozoobenthos community structure and the interrelation with water quality, Gilimanuk Bay is classified as moderately polluted waters.
Penelitian ini bertujuan untuk mengetahui konsentrasi logam berat Zn pada sedimen, akar dan daun lamun Enhalus acoroides serta kemampuannya dalam mengakumulasi dan mentranslokasi logam berat di kawasan perairan Pantai Sanur yang dilaksanakan pada bulan Pebruari 2018. Metode yang digunakan dalam penelitian ini adalah metode deskriptif dengan stasiun pengambilan sampel ditentukan dengan menggunakan metode purposive sampling yang dilakukan pada 3 stasiun. Sampling dalam penelitian ini meliputi sampling kualitas air, pengambilan sampel sedimen, akar dan daun lamun Enhalus acoroides. Pengukuran data kualitas air dilakukan secara insitu sedangkan analisis sampel dilakukan di UPT. Laboratorium Analitik Universitas Udayana dengan menggunakan ICPE-9000. Hasil penelitian menunjukan bahwa kondisi kualitas perairan Pantai Sanur secara umum masih mampu menunjang kehidupan lamun Enhalus acoroides sesuai dengan Pergub Bali No. 16 Tahun 2016 tentang baku mutu lingkungan hidup dan kriteria baku kerusakan lingkungan hidup. Rata-rata kandungan logam berat Zn di akar tertingggi pada stasiun 3 yaitu sebesar 7,09 mg/kg dan terendah pada stasiun 1 sebesar 5,84 mg/kg. Rata-rata kandungan logam berat Zn di daun tertingggi pada stasiun 2 yaitu sebesar 9,07 mg/kg dan terendah pada stasiun 3 yaitu sebesar 7,50 mg/kg. Sedangkan pada sedimen, kandungan logam berat Zn tertinggi pada stasiun 2 dengan nilai 12,27 mg/kg dan terendah pada stasiun 3 dengan nilai 9,47mg/kg. Nilai faktor biokonsentrasi (BCF) menunjukan bahwa daun dan akar lamun Enhalus acoroides dapat mengakumulasi logam berat Zn sebesar 0,78 dan 0,61. Hasil perhitungan translokasi faktor (TF) sebesar 1,28 menunjukan lamun Enhalus acoroides termasuk kategori fitoekstraksi (>1).
This research aimed to determine the ability of quorum sensing inhibitor compound thiophenone to protect catfish (Clarias sp.) larvae when challenged with the pathogenic Aeromonas hydrophila. This research was conducted at Fisheries Laboratory, Faculty of Marine Science and Fisheries, Udayana University, from December 2019 to January 2020. The experiment was setting up with four treatments and three replications for each treatment. 10 larvae of catfish were maintained in aquarium 15 cm × 15 cm × 20 cm filled with 1 liter of freshwater and used aeration for oxygen supply. The treatments were treatment A (control), treatment B (addition of A. hydrophila 106 cfu/ml), treatment C (addition of thiophenone 10 µM), and treatment D (addition of A. hydrophila 106 cfu/ml and thiophenone 10 µM). The results showed that the addition of thiophenone 10 µM increased the survival of catfish larvae up to 73% when challenged with A. hydrophila. That was significantly difference (P<0,05) compare to treatment B with survival rate of 43% within 3 days of culture period. Although it was not statistically different (P>0,05), the highest absolute weight and length were found in treatment A of 0,47 g and 0,50 cm, respectively, while the lowest absolute weight and length were found in treatment B about 0,23 g and 0,17 cm, respectively. The water quality such as temperature, pH and DO were still within the range that supported the growth and survival of catfish larvae during this study.
The purpose of this study was to determine the socio-economic conditions of coastal communities and determine the strategy for developing fisheries potential in Buleleng Regency. This research was conducted in seven districts: Gerogak, Seririt, Banjar, Buleleng, Sawan, Kubutambahan, and Tejakula. The research method uses SWOT Analysis. The full age range of fishermen is dominated by the age of 41-50 and the education level of Elementary Schools (SD). In general the condition of the fleet and fishing gear is still classified as small-scale fishing, with an average amount of fishermen income of Rp 1,000,000-2,000,000 / month. The recommended development strategy is the SO strategy: (1) organizing marketing of fish catches by fishermen groups; (2) compile investment profile of the opportunities in capture fisheries business; (3) enhancing the role of fisheries scouts to assist fishing activities. The fishery potential in WPP 713 can be maximized through the cooperation of fishermen in the form of a Kelompok Usaha Bersama (KUB)
Gianyar Regency has interesting tourist objects, one of which is Kanto Lampo Waterfall, located in Banjar Kelod Kangin, Beng Village, Gianyar District, Gianyar Regency. The origin of the name Kanto Lampo is that there are many Kanto Lampo trees that grow around the river. Supporting infrastructure facilities currently available at Kanto Lampo Waterfall are the availability of a reception office, gazebo/bale bengong, toilets, changing rooms/rinsing rooms, payment counters, bathing pools, food vendors, and a fairly large parking area. The number of tourist visits to the Kanto Lampo Waterfall tourist attraction from 2015 was 10,170 people and continued to increase every year until 2019 as many as 51,810 people. The research on the financial feasibility analysis of Kanto Lampo Waterfall tourism aims to determine the economic feasibility of a waterfall development business based on an economic-financial approach. This research took place from January to February 2021. Primary data were obtained from interviews, direct observation, and documentation in the field. Based on the data obtained, the business of the Kanto Lampo Waterfall tourist attraction obtained an NPV value for 10 years of investment of IDR 1,137,263,458,-. The IRR value is 38%. The BCR value obtained is 3.8. and the value of the Payback Period (PP) of 1.3 years shows that the payback period for the waterfall business is relatively fast. Keywords: Analysis; Beng; Economics; Feasibility; Tourism
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