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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.

Arjuna Subject : -

Articles 251 Documents

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Pola dan Parameter Pertumbuhan Ikan Tangkapan Dominan (Oreochromis niloticus, Osteochilus sp. dan Xiphophorus helleri) di Danau Buyan Bali I Made Suma Krisna Sravishta; I Wayan Arthana; Made Ayu Pratiwi
Journal of Marine and Aquatic Sciences Vol 4 No 2 (2018)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Bali Province has four lakes one of them is Buyan Lake. The benefits of Buyan Lake are as a reserve of water used to flow agriculture, settlements and for tourism attraction. In addition there is also the potential of Buyan Lake natural resources of fish is quite abundant. But there are threats arising from the utilization in Buyan Lake so it is feared to disrupt the growth of fish. Therefore it is necessary to do research concern with growth pattern and parameter of dominant catch fish in Buyan Lake. The aimed of this research was to determined the composition of fish catches, estimate the frequency distribution of fish catches and estimate growth patterns and growth parameters of dominant catch fish in Buyan Lake. This research was conducted from February to March 2017. There were nine species captured during observation such as Oreochromis niloticus, Osteochilus sp., Xiphophorus helleri, Rasbora lateristriata, Cyprinus carpio L, Amatitlania nigrofasciata, Puntius sp., Clarias gariepinus and Macrobrachium rosenbergii. The growth pattern of Oreochromis niloticus, Osteochilus sp. and Xiphophorus helleri in Lake Buyan have the same growth pattern that were allometric negative (b <3). Oreochromis niloticus growth parameter obtained L? of 255.1926 mm, K value of 0.2833, t0 value of -0.3260, Osteochilus sp. growth parameter obtained L? value of 251.3837 mm, K value of 0.5261 t0 value of -0.1697, Xiphophorus helleri growth parameter obtained L? value of 82.5826 mm, K value of 0.2379, t0 value of -0.5338. Osteochilus sp. had the highest growth coefficient of 0.5261.

Cover Depan JMAS Vol 3(2), 2017 Cover Depan JMAS Vol 3(2), 2017
Journal of Marine and Aquatic Sciences Vol 3 No 2 (2017)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

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Estimasi Persentase Karbon Organik Di Hutan Mangrove Bekas Tambak, Perancak, Jembrana, Bali I Gusti Agung Indah Mahasani; Nuryani Widagti; I Wayan Gede Astawa Karang
Journal of Marine and Aquatic Sciences Vol 1 No 1 (2015)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Mangrove forests in the coastal regions are very effective and efficient in reducing the concentration carbon dioxide (CO2) in the atmosphere, because mangroves can absorb CO2 through photosynthesis by diffusion through the stomata and then store carbon in the form of biomass. The purpose of this study, namely: (1) Determine the percentage of organic carbon in the soil in former mangrove forest ponds in Perancak and (2) Determine the vertical variation of the percentage of organic carbon stored in soils in former mangrove forest ponds in Perancak. The method used from this study is the loss on ignition (LOI). The average percentage of organic carbon in mangrove forest area of the former farm of 50.181 % C or 184.618 Mg/ha. The average vertical variations of each depth, that is: depth (0-15 cm) 50.487 % C, (15- 30 cm) 50.781 % C, (30-50 cm) 50.550 % C, (50- 100 cm) 51.689 % C, and (> 100 cm) 47.396 % C.

Pengamatan Laju Penyakit White Syndrome Pada Montipora sp. Di Pulau Pramuka, Taman Nasional Laut Kepulauan Seribu, DKI Jakarta Abdur Rosyid; Oktiyas Muzaky Luthfi
Journal of Marine and Aquatic Sciences Vol 5 No 1 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Coral disease now became main factor of coral degradation in the world. There is still a few report about coral disease in Kepulauan Seribu Marine National Park (TNKPS) include of white syndrome (WS) in Montipora sp. WS was characterized by white area on coral surface at several stages. WS had caused coral tissue loss and leaved bare CaCO3 skeleton that was caused by pathogenic Vibrio coralliitycus associated with other microorganisms. In this study the progress of WS calculated by measurement of the distances of WS that moved from diseased to healty coral surface. All calculations was performed used ImageJ Software. Our result showed that WS progression rate in first week was 9.06 cm2 and the second week was 2.37 cm2. Total coral tissue mortality was 12.03% for 2 weeks.

Pengaruh Sebaran Konsentrasi Klorofil-a Berdasarkan Citra Satelit terhadap Hasil Tangkapan Ikan Tongkol (Euthynnus sp) Di Perairan Selat Bali I Made Satya Prayoga; I Dewa Nyoman Nurweda Putra; I Gusti Ngurah Putra Dirgayusa
Journal of Marine and Aquatic Sciences Vol 3 No 1 (2017)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

One of fisheries potential in Bali Strait is tuna fish (Euthynnus sp). Tuna fish (Euthynnus sp) resources is highly influenced by waters productivity which indicated by the chlorophyll-a concentration distribution. The aims of this study are: to find out the concentration spatial of chlorophyll-a distribution in Bali strait, to find out temporal variability of chlorophyll-a and tuna fish (Euthynnus sp) in Bali strait, and to find out the influence of chlorophyll-a concentration distribution to the catch of tuna fish (Euthynnus sp) in Bali strait. The analysis of the influence of chlorophyll-a concentration distribution to the catch of tuna fish (Euthynnus sp) in Bali strait uses regression polynomial order 2, correlation, and cross correlation. The influence of chlorophyll-a concentration distribution to the catch of tuna fish (Euthynnus sp) in Bali strait yearly time series climatology amounted to R2 = 0,1624 or 16,24%, the correlation coefficient values obtained by r = 0,1889. Seasonal time series climatology in west season (December - February) R2 = 0,0707 or 7,07%, the correlation coefficient values obtained by r = 0,0749. The transitional season 1 (March - May) R2 = 0,0095 or 0,95%, the correlation coefficient values obtained by r = - 0,0092. The east season (June - August) R2 = 0,086 or 8,6%, the correlation coefficient values obtained by r = - 0,2155. The transitional season 2 (September - November) R2 = 0,0482 or 4,82%. The correlation coefficient values obtained by r = - 0,1805

Dekomposisi bahan organik pada sedimen di Tukad Mati dan Tukad Badung, Bali Ima Yudha Perwira; Rani Ekawaty; Alfi Hermawati Waskita Sari; Devi Ulinuha
Journal of Marine and Aquatic Sciences Vol 5 No 2 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

The sediment properties of Mati and Badung River, Bali were observed in this study. This study was aimed to know the relation between carbon, nitrogen and total bacterial number in the sediment of those rivers. This study was carried out in Mati and Badung River located in Southern part of Bali, Indonesia. Total carbon (TC), total nitrogen (TN), and total bacterial number of the sediment were observed in this study. Slow stirring method was used to estimate the total bacterial number in sediment, based on their environmental DNA intensity after agarose gel electrophoresis. TC of sediment was analyzed by using total carbon analyzer after combustion at 900oC, while TN was analyzed by using indophenol blue method after digested using Kjeldahl at 420oC for 1.5 hours. The result showed that TC of sediment in the Mati and Badung River were 6,100 and 7,000 mg/kg, respectively. TN of sediment in the Mati and Badung River were 380 and 440 mg/kg, respectively. The pH and electrical conductivity (EC) of sediment in the Mati River were 6,88 dan 0,10 µs/cm, while in the Badung River were 6,80 dan 0,11 µs/cm. Total bacterial number in the Mati river was lower (4.8 × 108 cell /g) than that in the Badung river (3.8 × 108 cell/g). The high value of R2 between total bacterial and TC (0.91), and between total bacterial number and TN (0.83), indicating the high influence of bacteria on the decomposition of organic materials in the sediment.

Variasi Musiman Hubungan Antara Parameter Oceanografi Dengan Hasil Tangkapan Ikan Tongkol Berdasarkan Data Harian Di Selat Bali I Gusti Agung Bagus Wisesa Sastra; I Wayan Gede Astawa Karang; Abd. Rahman As-syakur; Yulianto Suteja
Journal of Marine and Aquatic Sciences Vol 4 No 1 (2018)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Mackerel fish that classified pelagic fish and an export commodity in Indonesia. Distribution of mackerel fish are foundn all Indonesian waters, one of them in the Bali Strait. Distribution of mackerel fish influenced by oceanographic condition such as sea surface temperature (SST) and chlorophyll-a concentration. SST and chlorophyll-a concentrations are environmental parameters that can provide information on fishing ground. The purpose of this research is explained the temporal fluctuation and relationship between SST and chlorophyll-a concentration with mackerel fish had been catch in Bali Strait waters during 2011-2016. Data were analyzed using simple correlation analysis with 95% confidence interval. Temporally, the highest average SST occurred during the transition season I (March-May) and the lowest in the east season (June-August). The highest average chlorophyll-a concentration occurs in the east season and the lowest in the west season (December-February). The highest catch of mackerel fish occurred during transitional season II (September-November) and lowest in west season. The association between SST and chlorophyll-a concentration on mackerel fish catch showed low correlation with significant relationship, whereas concentration between SST and chlorophyll-a concentration strong with significant correlation

Keanekaragaman dan Kerapatan Rumput Laut Alami Perairan Pulau Serangan Denpasar Bali Ni Desak Putu Dita Herlinawati; I Wayan Arthana; Ayu Putu Wiweka Krisna Dewi
Journal of Marine and Aquatic Sciences Vol 4 No 1 (2018)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Serangan Island was a costal area located in the Serangan village, South Denpasar district, near with Sanur and Nusa Dua tourism area. Serangan beach has a biodiversity such as natural macroalgae. This study was conducted in January 2017 at the seaweed cultivation area with the aims of research were to know the variety and density of macroalgae. The method used was a 1x1 m quadrat transect. Sampling was carried out during low tide. Macroalgae found in the area, consist of 12 species namely Ulva lactuca, Chaetomorpha linum. Chaetomorpha aera, Padina australis, Sargassum fluitans, Turbinaria ornate, Gelidium sp., Hypnea cornuta, Hypnea spicifera, Gracilaria salicornia, Acanthophora spicifera, Halimeda opuntia. Those species were belonging to 3 divisi namely Chlorophyta, Phaeophyta, Rhodophyta. The highest density of macroalgae was Padina australis while the lowest density was Chaetomorpha linum. Type of dominated macroalgae was from a group of Phaeophyta (brown algae) with highest dominance from the species of Padina australis. Water quality namely acidity (pH) was in the range of 7.54 to 7.75, salinity of 31.33-32.00 ppt, the water temperature was 26.50-27.30? C, which all was categorized as the optimal parameters for the growth of macroalgae. Assosiation of biota found were 9 species namely fish of larva, Cypraea lynx (Molusca), Emerita sp., Halodule sp., Synapta maculate, Enhalus acoroides, Cymodocea serrulata, Hermit crab, Ophiuroidea sp. The conditions coastal waters substrate was varied from white sand stone type to stony type by coral pieces.

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).

Phylogenetic Study of Zebrafish (Amatitlania nigrofasciata) as an Introduction Spesies in Buyan Lake Bachori Dhian Pratama; Pande Gde Sasmita Julyantoro; Made Ayu Pratiwi
Journal of Marine and Aquatic Sciences Vol 5 No 1 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Buyan Lake has some fishery commodities which were often encountered include the Zebrafish (Amatitlania nigrofasciata). The origin existence of Zebrafish in Buyan Lake is not yet known then it needs study in order to know the certainty of species, phylogenetic, haplotype diversity, and phenotype characteristic. The study was conducted from January to February 2018. Molecular identification was done at Laboratory of Biodiversity Indonesia Bali. This research used quantitative and qualitative descriptive methods. Sampling was done by simple random sampling from fisherman catches. Zebrafish’s fin samples were used for molecular identification and Zebrafish’s morphological for morphological identification. The results showed that the entire sequence samples were successfully amplified with the Cytochrome Oxidase subunit I (COI) gene of 620 bp. The genetic distance in the entire Zebrafish sequences in Buyan Lake of 0 which means that the sequence of all samples are exactly similiar as species of Amatitlania nigrofasciata with the genetic distance calculation of 0. Sequence of Zebrafish in Buyan Lake is closely related to Amatitlania nigrofasciata KU568740, Amatitlania nigrofasciata KU568739, Amatitlania nigrofasciata KU568737, Amatitlania nigrofasciata KJ552531, and Amatitlania nigrofasciata KU568738 with genetic distance of 0 and has a distant relation with Rocio ostofasciata EU751752 with genetic distance of 0.113. The haplotype diversity of Zebrafish sequences in Buyan Lake showed the value of 0 which belongs to a low haplotype diversity. Black and Black Zebrafish with Red Spotted are in a different clade with Albino and Albino Zebrafish with Red Spotted with bootstrap value of 100, means they have phenotypically differences.

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