Tanjung Benoa Research Articles

Length Plastron Correlation towards Ridley Turtles Long Flipper that Given Lemuru and Seaweed Feeds

A turtle security that was released their habitat in conserving, it was determined by their speed and agility to swimming and diving at avoiding predators even chasing prey to be eaten. The most an important part of turtle organs for agile swimming and diving was a flipper. Flippers forward more function as paddles when swimming and diving while the rear flippers serves as a rudder to steer the direction of movement of swimming and diving. The front flippers are unlike paddle when swimming and diving, whereas, the back flippers as a rudder at direction when swimming and diving. At front flippers, there was belong a strong nails for ripping or tearing their prey, therefore, it was easy eaten. The study was intended to know a feeding effect of lemuru and seaweed on different percentage towards length plastron correlation to in front length flippers both. An experiment material that was used in the research was 75 ridley turtles, having by the ranch turtle, PT. Moncot Sari, located in Desa Tanjung Benoa, South Kuta subdistrict, Badung regency. The experiments were designed using RAL, the analysis of correlation, regression, and data processing applied Costat Statistics. The research results were obtained the highest long plastron average rows on treatment E: 36.4 cm, D: 28.7 cm, A: 28,6 cm, B: 27.6 cm and C: 26.6 (P <0.01), a length plastron correlation and regression towards long front flippers were significant both front and back. A length plastron correlation (X) with front flippers r = 0.7768, b = 03 223 and a = 18.2499 very significant (p <0:01), whereas, the correlation between long front flippers (X) and long back flippers r = 0.6346 , b = 0.9814, a = 14.6368 highly significant (P <0.01).

Studi Komunitas Makrozoobenthos di Kawasan Hutan Mangrove Pulau Penyu, Tanjung Benoa, Bali

Mangrove in marine ecosystem have function to help continuing food chain directly, provide food for benthics organism, include macrozoo and microzoo, and ephiphyte and indirectly as habitat, nursery ground and spawning ground (Nontji (1993), Valiela et al, (2001). This research analyzed macrozoobenthics community in mangrove forest, Penyu Island, Tanjung Benoa, and counting correlation between mangrove density and macrozoobenthics abundance. 4 mangroves species (Bruguiera gymnorrhiza, Rhizopora mucronata, Rhizopora stylosa dan Sonneratia alba) and 22 macrozoobenthics genus (Cvpraeidae, Naticidae, Cerithiidae, Mathildidae, Mitridae, Columbellidae, Buccinidae, Neritidae, Fasciolariidae, Smaragdinellidae, Littorinidae, Trochidae, Costellariidae, Terebridae, Opisthobranchia, Pyramidellomorpha, Littorinidae, Conidae, Thaididae, Potamididae, Turritellidae, Nassariidae) were identified from 3 stasions over the Island. Rhizopora stylosa have the highest importance index in Penyu Island mangroves community and than Bruguiera gymnorrhiza. The highest abundance documented in station 1 for 385.2 ind/m2 and then station 2 for 271.58 ind/m2 and the lowest is station 3 247.71 ind/m2. Cerithium sp recorded as dominant species and Turritella cochlea and Cyprae kieneri as inferior species. Macrozoobenthos community in Penyu Island is being stable base d on high diversity index, moderate eveness index and low dominance index. The regression equation acquired Y = -60.524X + 119.94 and revealed correlation 40.05% and explain 16.04% macrozoobenthics varians. From the study inconclusive there are no correlation between mangroves density and macrozoobenthics abundance.

NUMERICAL CALCULATION FOR THE RESIDUAL TIDAL CURRENT IN BENOA BAY-BALI ISLAND

Princeton Ocean Model (POM) was used to calculate the tidal current and M2-residual current in Benoa Bay using barotropic model (mode 2). The model was forced by tidal elevation, which was given along the open boundary condition using tide data prediction from Hydro-Oceanography Division-Indonesian Navy (DISHIDROS TNI-AL). The computed tidal current and residual current have been compared with both data in Benoa Bay, that are data of the open boundary of Benoa Bay and condition of Benoa Bay after developed a port and reclamation of Serangan Island. The maximum velocity of tidal current for open boundary conditions at flood tide is 0.71 m/sec, whereas at ebb tide is 0.65 m/sec and the maximum velocity after developed a port and reclamation of Serangan Island, at flood tide, is 0.69 m/sec. The simulation of residual current with particular emphasis on predominant constituent of M2 after developed a port and reclamation of Serangan Island shows a strong flow at the western part of Tanjung Benoa and Benoa Harbor and also at bay mouth between Serangan Island and Tanjung Benoa. Maximum velocity of M2-residual current is 0.0585 m/sec by the simulation and showed that the current which was produced forming two eddies in the bay of which one eddy is in the mouth of bay in southern part. The residual current for open boundary condition of bay shows four eddies circulation, one big eddies and the others small. The anticlockwise circulation occurs in the inner part of the bay. Key words: model, simulation, tidal current, residual current

KARAKTERISTIK POLA PEMAKAIAN DAN PELAYANAN AIR BERSIH DI WILAYAH USAHA PAM PT. TIRTAARTHA BUANAMULIA

Abstract : The purpose of this study is to determine how the pattern of usage, behavior and water services in the areas of business of PAM PT.Tirtaartha Buanamulia (PT.TB) using qualitative descriptive methods such as survey research instrument (observation) and questionnaires of 337 samples, consisting of domestic water consumption and non- domestic . The result of the analysis showed that the average water consumption in some parts of sub-district of Kuta (Kedonganan village, Tuban village and Kuta village), the business area of PAM PT. TB, amounts to 243.49 liters /person /day. Average water use in the District of South Kuta (Pecatu village, Ungasan village, Kutuh village, Benoa vilage, Tanjung Benoa village and Jimbaran village) amounts 168.01 liters/person/day. Calculation of water demand for star hotels based on the results of the study on average is 726.84 liters /room/ day and non-star hotels 43.85 liters/room/day, the need of water for the restaurant and the restaurant is based on the research of 18.85 liters/seat/day, water usage for educational facilities based on the results of the study amounted to 9.99 liters/person/day, the water requirements for health facilities based on the research needs 562.13 liters /bed/day. The amount of non- domestic water needs based on research results which was 72.69 % of the domestic water needs, is the basis for the provision of water by PAM PT. TB at this time and in the future. The analysis of the results showed that the community of water users in the area of business PAM PAM PT. TB had a good perception of the PAM service; this is evidenced by the level of customer satisfaction to achieve 73.07 % PAM services for domestic and non- domestic 100 %. This study also showed the willingness of subscribers received 10 % increase in the tariff.