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Journal of Marine and Aquatic Sciences

jmas
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Published by Universitas Udayana

ISSN : 23028114 EISSN : 25497103 DOI : -

Core Subject : Science,

Earth & Planetary Sciences

Journal of Marine and Aquatic Sciences (JMAS) adalah peer-reviewed, open access journal, diterbitkan oleh fakultas Kelautan dan Perikanan, Universitas Udayana. JMAS menerbitkan hasil peneitian original dan review artikel dalam bidang ilmu kelautan, manajemen sumberdaya perairan, dan aplikasi remote sensing di bidang kelautan dan perikanan.

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Articles 7 Documents

Search results for , issue "Vol 2 No 2 (2016)" : 7 Documents clear

Penentuan Titik Lokasi Pelabuhan Penyeberangan Amed Di Kabupaten Karangasem I Gusti Ngurah Putra Dirgayusa
Journal of Marine and Aquatic Sciences Vol 2 No 2 (2016)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Accumulation of social activity, economy and transportation that occur in Southern part of Bali adversely affects at transportation infrastructure carrying activity in this area. These require the government to get the solution of this problem. Through spatial planning area of Bali province 2005, governments establish Amed Bay developed as crossing harbor. These cases mean to divide the shout hem traffic line and support the development in northern part of Bali. The object of this research is in Purwakerti village, district of Abang, Karangasem regency. Research held based on technical and legality review. In advance analyze of those aspects that established some alterative potential location based on area requirement and mapping survey result. Following, each location alternative disassembly and examined their advantages and disadvantages in each aspect. Technical aspect analyze of land and territorial water technique. The approach that used in harbor location selection for this technique is weighting and assessment method in assessment matrix. The weighting value that used refers to harbor location selection in Makian bay. Meanwhile, for legality aspect, analyzed by policy review that relate to spatial area and location selection of harbor development. Based on minimum area demand analyze that 0.7 Ha for land facilities and 15.8 Ha for waters facilities. Refers to minimum area demand and layout spatial survey, four locations are selected for alternative points. After technical and legality aspect analyzed, then obtained second area chosen which located in Amed country, Purwakerti village.

Studi Penilaian Ekosistem Mangrove Hasil Tanam Berdasarkan Keberadaan Gastropoda di Pulau Pramuka, Kepulauan Seribu, Jakarta Yayan Mardiansyah Assuyuti; Alfan Farhan Rijaluddin
Journal of Marine and Aquatic Sciences Vol 2 No 2 (2016)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

The aims of mangrove replanted are to protect and good quality of coastal ecosystems and small islands, but it is have influenced to change of habitat and ecology function. This study conducted at Pramuka Island, Seribu islands, Jakarta, in June 2016. Data of gastropoda using 1 m2 square random sampling and divide depend on height are 0-1, 1-2 and 2-3 m. The aims of study are to determine (i) diversity, density, (ii) vertical distribution, (iii) size shell, (iv) correlation of density with distribution, (v) correlation of size shell with vertical distribution, (vi) correlation of individual with height gastropoda, and (vii) assessment of mangrove replanted depend on gastropoda. The species of Terebralia sp. and Littorina sp. are found in mangrove replanted. The total value of diversity and density of mangrove gastropoda are 0.6 and 31.3 ind/m2, respectively. Vertical distribution of gastropoda Terebralia sp. found in 0-1 m and Littorina sp. in 0-3 m. The density and individual of Terebralia sp. have high value and size shell largest than Littorina sp. Gastropoda found indicated that the mangrove ecosystem in Pramuka island is still young and is in a transition state.

Potensi Ekstrak Daun Binahong (Anredera cordifolia) Sebagai Penghambat Bakteri Vibrio harveyi Gde Raka Angga Kartika; Sri Andayani; Soelistyowati Soelistyowati
Journal of Marine and Aquatic Sciences Vol 2 No 2 (2016)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Binahong (Anredera cordifolia) is a plant that can treat various kinds of diseases, because this plant has a high antioxidant content and as an antibacterial and antiviral. Vibriosis disease caused by the bacterium Vibrio harveyi is a serious problem in marine and brackish culture, this disease can cause death for shrimp and fish that farmed in marine or brackish. This study aims to determine the potential of using leaf extract Binahong with different concentrations as Vibrio harveyi inhibiting bacterial growth in vitro. The method used is to test the Minimum inhibitory concentration (MIC) to determine minimum levels inhibit the growth of Vibrio harveyi and Minimum Bactericidal Concentration (MBC) using paper disc. The results showed the use of leaf extract Binahong (Anredera cordifolia) with different concentrations significant effect on the growth of Vibrio harveyi in vitro. Binahong leaf extract (Anredera cordifolia) with a concentration of 3%, 5%, 7%, 9%, 11% and 13% is only bacteriostatic which inhibits the growth of bacteria Vibrio harveyi with the best concentration obtained is equal to 13%.

Model Hidrodinamika Pasang Surut di Perairan Pesisir Barat Kabupaten Badung, Bali Made Narayana Adibhusana; I Gede Hendrawan; I Wayan Gede Astawa Karang
Journal of Marine and Aquatic Sciences Vol 2 No 2 (2016)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Finite Volume Coastal Ocean Model (FVCOM) is using for numerical modeling of hydrodynamic tidal water in west coast of Badung regency, Bali. The model result is validation with field observations data in the area using the equation Root Mean Square Error (RMSE). Field tidal data elevation of sea level elevation measurements were obtained by using the palm of tidal. Field data speed and direction of sea currents obtained using Lagrangian method. Excellent results obtained with RMSE values tidal elevation of sea level by 0.24 m dan RMSE values for sea current is 0.125 m/s. The results of model simulations show sea current patterns in the waters of the west coast of Badung regency, Bali relatively the same at the spring tide and neap tide conditions. The pattern of sea currents at high tide shows current vector that moves in toward the water of the west coast of Badung regency area from Bali Strait and the Indian Ocean. At the time of low tide sea current vector movement towards Bali Strait and the India Ocean. Sea current velocity in the eastern waters of the west coast of Badung regency (longitude of 115,05°– 115,17°) is higher than the sea current velocity in western waters area (longitude of 114,95°– 115,05°). Sea current velocity in the waters of the west coast of Badung regency on the condition of the spring tide range from 0.005 to 0.025 m/s, on the other side the sea current velocity on the neap tide conditions range from 0.005 to 0.012 m/s.

Karakterisitk Pantulan Spektral Citra Landsat 8 Pada Area Pasang Surut: Studi KasusTeluk Benoa, Bali I Wayan Gede Astawa Karang
Journal of Marine and Aquatic Sciences Vol 2 No 2 (2016)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Benoa bay is a tidal area located in the southern part of Bali island. Several study of physical aspect of sea water in the Benoa bay has been done using remote sensing data. At this moment there aren’t studies about the relationship between the tidal condition and the spectral response. For this reason, the aim of this work is to study the characteristic of spectral response of satellite data linked to tidal variation. To meet the goal, Landsat TM 8 images were used in eight different dates ranging from March 2014 to May 2015. The methodology included techniques such as radiometric corrections, cropping and statistical analysis for band 1 to 7. The results indicate that when landsat 8 images acquired, Benoa Bay has a tidal elevation from -0.121 to 0.857. The spectral responses for the sea water body show a contrast between the visible and infrared regions. There isn’t clear correlation between tidal water variation and its spectral behavior of infrared regions; it depends rather on the presence or absence of sediments and vegetation in the water as shown in the visible region with moderate correlation 0.65 (Band 1) and 0.67 (Band 2).

Karakteristik Ikan Tuna sirip biru selatan (Thunnus maccoyii) Hasil Tangkapan Kapal Rawai Tuna yang didaratkan di Pelabuhan Benoa I Gede Adi Swastana; Abd. Rahman As-syakur; Dian Novianto
Journal of Marine and Aquatic Sciences Vol 2 No 2 (2016)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Southern bluefin tuna (SBT) is scientifically known Thunnus maccoyii, and just live in the southern hemisphere. SBT fish classified as the most exploited tuna fish in the southeastern part of the Indian Ocean, so it is protected by the International Union for the Conservation of Nature (IUCN). The aim of this study is too collected of SBT fish caught during January which is the peak of SBT landing in Benoa port. The study was conducted base on data sampling, observation and interviews on 33 ships were landing SBT fish during January 2016. Based on observations from 33 vessels, we found that the total of SBT fish that landed in Benoa port during January 2016 is 251 fresh fish and 366 frozen fish. However just 251 SBT fresh fish were sampled, and the result indicated the fresh SBT fish is dominated by weigh between 61-70 kg with number 61 fish with a total weight of 19.28 tonne. The SBT were caught dominated by fish that has FL (fork lenght) ranging between 151-160 cm with number 69 fish. While the smallest SBT range between 131-140 cm with the number of 5 fish. These results indicate that SBT fish caught in the Souetheast Indian Ocean during January 2016 is generaly relative small fish (130–160 cm FL) with a number of 163 fish and mature SBT fish (FL > 162 cm) with a number of 88 and young SBT (FL < 130 cm) with a number of 5 fish. Based on morphometric analysis, eyeball diameter of SBT range 6-8 cm, the length lateral head from the tip of the mouth to behind the gill cover ranging 46-54 cm, the length of body from the early dorsal or in front of the first dorsal fin ranging between 38-47 cm, the height of fish at the end of the anal or at the end ranging between 34-39 cm, the high of caudal peduncle ranging between 4-5 cm, th length of the dorsal base of the tail fish ranging between 53-63 cm, and the length of the base of tail anal from anal to tail ranging between 41-51 cm. Base on size and age composition, it is shown that the growth of SBT during January 2016 is isometric.

Analisis Kualitas Air dan Kepadatan Moluska pada Kawasan Ekosistem Mangrove, Nusa Lembongan Made Ayu Pratiwi; Ni Made Ernawati
Journal of Marine and Aquatic Sciences Vol 2 No 2 (2016)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Mangrove is one of the coastal ecosystem is able to grow in fluctuating water conditions. Mangrove areas are found on the Nusa Lembongan island, Bali, is a ??mangrove ecosystem that have the unique characteristics of water area. The mangrove area is located on one of the small islands in Bali that have no source of freshwater input and there is the entrance of water into the mangrove forest. The uniqueness of waters in mangrove ecosystem will affect the type and density of fauna associated, particularly mollusca. Mollusca are one of the animals that live and thrive in the mangrove ecosystem. Therefore, it is necessary to study which aimed to provide a description of the water quality and mollusca on mangrove ecosystem in Nusa Lembongan. This research was conducted in June 2015 on a six station observation. Measurement of water quality conducted on four water parameters such as temperature, DO, pH, and salinity. Observation on the type and density of mollusca done using transects squared (1 x 1 meter). The range of values ??obtained water quality parameters, such as; 1) salinity (32.00-34.33 ppm), 2) pH (7.06-7.96), 3) temperature (27.27-30.13 Celsius), and 4) DO (2.60-6.90 mg/l). Water quality parameter values ??obtained are still in the range of water quality standard and suitable place to live and grow for marine biota life. Dissolved oxygen (DO) value was still below the threshold quality standard. There six families of mollusca found in six observation station, such as Neritidae, Littorinidae, Columbellidae, Olividae, Carditidae, Muricidae, Potamidae, Certthiidae. The highest density was in Family Potamidae (1.83 ind/m2), so the Family Potamidae is able to adapt and have a wide area deployment.

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