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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 234 Documents

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Analisis Temporal Suhu Permukaan Laut di Perairan Indonesia Selama 32 Tahun (Era AVHRR) I Nyoman Januarta Triska Putra; I Wayan Gede Astawa Karang; I Dewa Nyoman Nurweda Putra
Journal of Marine and Aquatic Sciences Vol 5 No 2 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

One of the important factor that influences global climate dynamics is sea surface temperature (SST). Indonesian waters are semi-closed and located between the Pacific and Indian Oceans so that they have different characteristics of SPL in each region. The purpose of this research is to know the trend and local characteristics of Indonesian SST and adjacent areas in response to 6-monthly and seasonal variability with moving average method and correlation. The data used are SST data from AVHRR satellite with domain 15°N-15°S, 90°-145° E. The results showed of increase trend 0.34°C in Indonesian sea for 32 years (1981-2012). The characteristics of SST in Indonesian territory are closely related to the Mosoon cycle where in the East period in the northern region the Natuna Sea is warmer in contrast to the West monsoon period, in the southern part of the Arafura Sea to the warmer Sawu Sea and around the equator experiencing the warmest in the transitional period. The moving-average analysis shows that 6-monthly variability appears to be dominated in equatorial waters including the Java Sea and Banda Sea whereas seasonal variability occurs in the northern and southern regions of Indonesia's waters including the Pacific Ocean Oceans, the northwest Pacific Ocean and the southeast Indian Ocean. Based on correlation analysis, ENSO has a strong (negative) relationship in eastern Indonesia waters including the Sea in the northern part of Papua and the northwest Pacific Ocean while IOD has a strong (negative) relationship in the western Sumatra Sea, Banda Sea and Arafura Sea.

Bahan Organik Total dan Kelimpahan Bakteri di Perairan Teluk Benoa, Bali Ni Luh Eta Yuspita; I Dewa Nyoman Nurweda Putra; Yulianto Suteja
Journal of Marine and Aquatic Sciences Vol 4 No 1 (2018)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Benoa Bay is semi-enclosed waters that have various activities. The existence of these activities will contribute to organic matter in the waters so that the effect on the presence of bacteria. This study aims to determine the total concentration of total organic matter (TOM) and bacterial abundance as well as its spatial and temporal distribution, and to determine the relationship of TOM concentration to bacterial abundance in the waters of Benoa Bay. Data collection is conducted on the surface of the waters in December 2016 to February 2017 when ebb conditions at 5 Benoa Bay water stations. Measurement of organic matter using permanganate test in titimetry based on standard methods SNI 06-6989.22-2004. Measurement of bacterial abundance using Total Plate Count (TPC) method. The TOM concentrations ranged from 63.20 to 65.10 mg/l and bacterial abundances ranged from 30 to 300 CFU/ml. Spatial distribution of TOM concentration and bacterial abundance tends to be higher close to Suwung Landfills (TPA) activity, floating net cage cultivation (KJA) activity in Serangan waters, and Buaji river estuary and tend to be lower approaching Benoa harbor activity and waters further from those activities. The concentration of TOM and bacterial abundance in December 2016 to February 2017 have fluctuating values. Based on the interpretation of the correlation coefficient, the level of relationship between BOT concentration and bacterial abundance in the waters of Benoa Bay is quite strong.

Panjang Karapas dan Laju Pertumbuhan Spesifik Kepiting Bakau (Scylla serrata) yang diberi Jenis Pakan Berbeda di Area Ekowisata Kampung Kepiting, Bali Ni Desak Putu Ida Suryani; Pande Gde Sasmita Julyantoro; Ayu Putu Wiweka Krisna Dewi
Journal of Marine and Aquatic Sciences Vol 4 No 1 (2018)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Mangrove forest is tropical coastal vegetation that grow on muddy and sandy soils which affected by sea tides. One of important commercial species that live in mangrove ecosystem is the mud crab (Scylla serrata). Feed and water quality have been considered as critical components for supporting the growth both of weight and carapace length of this species. This study was conducted from January to February 2017 in the area of ??Ecotourism Kampung Kepiting, Bali. The influence of different natural feed such as Jerbung shrimp (Penaeus merguiensis), Mollusca, lemuru fish (Sardinella lemuru) and sea worms (Nereis sp.) on the growth performance of the mud crab were investigated. Water quality parameter data such as pH, DO, temperature, salinity and ammonium were also collected. The obtained data were analyzed by using variance analysis of Statistical Product and Service Solutions (SPSS) version 21. The result showed that the use of different types of feed have no effect on the length of carapace, but it has significantly influence on the specific growth rate of mud crab. Finally, different types of the given feeding were still resulted in the save range of water quality parameters for mud crab culture.

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.

Efektivitas Pengolahan Limbah Domestik di Instalasi Pengolahan Air Limbah (IPAL) Suwung-Denpasar, Bali Desak Made Goldyna Rarasari; I Wayan Restu; Ni Made Ernawati
Journal of Marine and Aquatic Sciences Vol 5 No 2 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Denpasar City and Badung Regency has a very large population growth rate, diversity, and intensity of development activities that produced domestic waste which if not properly managed, causes burden and damage to the aquatic environment. Wastewater Treatment Plant (WWTP) Suwung-Denpasar is one of the wastewater treatment business for waste management center from the area around Denpasar, Sanur, and Kuta. Based on the data analysis was known that the waste generated has not been appropriate environmental quality standards so that will affect the quality of the water. The aim of his research is to investigate the effectiveness of domestic wastewater treatment conducted in March - April 2017 by observation method in process and effectiveness measurement of waste water treatment. The processing begins with the distribution of waste in Denpasar and Sanur areas that are channeled to the bar screen and then collected to the inflow pumping station to be channeled to the receiving tank including waste from the Kuta area. Subsequent waste flows into the chamber grit to be filtered and taken to the aeration pond for 2 days then to the sedimentation pool for 16 hours and flowed to the effluent canal. The results showed the percentage of effective waste treatment in oil and fat restoration 85%, detergent 62%, and BOD 57%, while not effective in ammonia change because only reduced 26%, DO and H2S are not in accordance with environmental quality standards.

Identifikasi Kandungan Senyawa Fitokimia Pada Daun dan Akar Lamun di Pantai Samuh Bali Ni Luh Gede Widya Bintang Gustavina; I Gusti Bagus Sila Dharma; Elok Faiqoh
Journal of Marine and Aquatic Sciences Vol 4 No 2 (2018)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Seagrass is the only flowering plant which has a true roots, leaves, and stems, an angiosperm plant that adapted to live entirely in the ocean. Seagrass produces several compounds which produced through secondary metabolism, one of the secondary metabolism is the phytochemicals. Seagrass ecosystem in Tanjung Benoa was discovered along Samuh Beach, where 9 kinds of seagrass species were found around the seagrass ecosystem in Tanjung Benoa. Samuh Beach has a tranquil water conditions and sandy substrate. The activities of marine tourism and hotel waste disposal in Tanjung Benoa waters cause major ecological pressure and physical pressure for the seagrass ecosystem. This study aims to determine the content of phytochemicals in the leaves and roots of seagrass. Screening method was used to determine the content of bioactive alkaloids, flavonoids, saponins, steroids, and tannin compounds. Each of these compounds has an important role in the seagrass. The existence of chemical compounds of the flavonoid, alkaloid and steroid groups in the roots and leaves of Cymodocea rotundata seagrass, Enhalus acoroides, Thalassia hemprichi, Halophila ovalis, Halophila minor, Halodule uninervis and Sryngodium isoetifolium in this study indicate that the seven species of seagrass has potential as a natural chemical antifouling, antifungal, and antibacterial.Then the seagrass will be protected from the danger of predators or epiphanies that interfere with the growth of seagrass and the ecosystems on Samuh Beach will remain intact.

Distribusi Spasial Dan Struktur Komunitas Plankton Di Daerah Teluk Penerusan, Kabupaten Buleleng Ni Made Dewi Damayanti; I Gede Hendrawan; Elok Faiqoh
Journal of Marine and Aquatic Sciences Vol 3 No 2 (2017)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Research spatial distribution and community structure of plankton in the Penerusan bay has been done on 22 February 2016.Plankton samples were taken at 17 stations using the Horizontal haul. The results obtained by the group of phytoplankton of the most widely found are from class Bacillariophyceae with the abundance of species composition percentage of 77% and the group most zooplankton were found came from class Maxillopoda with the percentage of the species composition of 85%. Highest abundance of phytoplankton found in abundance station 5, while the highest abundance of zooplankton found in abundance station 4. Index values diversity, uniformity and dominance of phytoplankton that is 1,06, 0.40 and 0.11 while the index value of diversity, uniformity and dominance zooplankton are 0.52,0.40 and 0.34. Results of the spatial distribution of phytoplankton abundance scattered in the middle of the bay towards the outside while the spatial distribution of zooplankton abundance spread from the south of the bay towards the middle of the bay and to the north of the bay Forwarding. Water quality in Penerusan Bay of physicists chemical parameters such as temperature obtained ranged from 31.1to 32,5 0C, average brightness obtained 87 %, turbidity obtained ranges between 0,73 to 2.62 ntu, dissolved oxygen (DO) obtained ranged from 6 to 8.3 mg/l , the degree of acidity (pH) obtained ranged from 7.17 to 8.04, salinity obtained ranged from 31-35 ppt, nitrate values obtained ranged from 0.60 to 1.83 mg/l and phosphate values obtained ranged from 0.10 to 0.78 mg/l.

Beban Pencemar Dan Kapasitas Asimilasi Amonium dan Nitrat Saat Pucak Musim Barat di Teluk Jakarta Yulianto Suteja
Journal of Marine and Aquatic Sciences Vol 2 No 1 (2016)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Jakarta Bay is a bay that has an important role in Jakarta, but the activity in this area lead to the potential for pollution mainly ammonium and nitrate. Pollution peaks generally occur during the rainy season (west monsoon). Pollution that enters the bay can be neutralized naturally by water as long as the amount does not exceed the asimilation capacity. This study aims to calculate the total input (load), assimilation capacity, and residence time of ammonium and nitrate in Jakarta Bay in the rainy season. Data from this study is derived from secondary data. For the total input of pollutants are calculated from the input stream, the atmosphere and the boundary. From the research found that the Jakarta Bay had a total load of pollutants NH4 at 115.8 x 109 mmol N /month and NO3 46.5 x 109 mmol N/month. The biggest contributor to the pollution comes from the boundary NH4 is 56.9% and NO3 from the river 70.1%. Load from Citarum river for NH4 around 3.8 x 1010 mmol N/month and NO3 around 3.0 x 1010 mmol N/month higher than Marunda, Priok and Angke the rivers. Assimilation capacity of Jakarta bay for NH4 around 25.7 x 109 mmol N /month and NO3 of 24.1 x 109 mmol N /month. It shows the total load of pollutants entering the Jakarta Bay is greater than the assimilation capacity. The residence time of water in the Bay of Jakarta is 13.3 days longer than the residence time of NH4 and NO3 which were only 8.6 and 9.2 days.

Biomonitoring Kesehatan Kerang Abalone (Haliotis squamata) Hasil Tangkap di Perairan Mengening, Bali Dengan Pengamatan pada Aktifitas Fagositosisnya Devi Ulinuha; Ima Yudha Perwira
Journal of Marine and Aquatic Sciences Vol 5 No 1 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

The health level of captive abalone (Haliotis squamata) in Mengening waters, Bali Island, was observed through observation on the phagocytosis activities. This study was aimed to determine the health level of abalone in the Mengening waters influenced by their environmental factors. The method is in this study was descriptive, through observation on any parameters of the immunity including: Total hemocyte count (THC) and Percentage of Fagocytosis. Water quality in the location was also measured, including Dissolved Oxygen (DO), pH, water temperature, and water salinity. THC of Abalone in Mengening waters was 2.03 x 106 celss/ml, while the percentage of phagocytosis was 75,9%. Water quality during the study showed optimal condition (DO: 5.9-6.1 ppm; pH: 7.8; water temperature: 25.1-31.5oC; and water salinity: 33-34 ppt), even there was fluctuation on the water temperature (>5 oC) between morning and afternoon.

Keterkaitan Komunitas Makrozoobentos dengan Kualitas Air dan Substrat di Ekosistem Mangrove Taman Hutan Raya Ngurah Rai Bali Maria Ulfa; Pande Gde Sasmita Julyantoro; Alfi Hermawati Waskita Sari
Journal of Marine and Aquatic Sciences Vol 4 No 2 (2018)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Ngurah Rai forest park located in two districts of Badung and Denpasar city which is as the main centre of anthropogenic activities. There is an estuary in this area that used as run off of those activities. This area faces directly into the ocean. Wastes from anthropogenic activities indirectly affected biotic and abiotic components such as water quality, substrate, and macrozoobenthos. This research aims to discover the community of macrozoobenthos and its relation to the water quality and substrate in Ngurah Rai forest park. This research used purposive sampling metode to determine of stations. Sampling was conducted at four different stations covering macrozoobenthos samples, measuring water quality (salinity, pH, DO, temperature, turbidity) and substrate samples. A total of 19 types of macrozoobenthos was found out of 5 classes, i.e. Polychaeta, Oligochaeta, Bivalves, Gastropods, and Crustaceans. The diversity index was categorized as low to moderate. The uniformity index value of community was categorized as balanced. The dominant index on the fourth station states that the level of dominance was categorized as low. Water quality parameter measurement results were still within normal limits, but the turbidity value of the first station exceeds the normal limits due to high content of organic matter. The substrate type at first station to fourth station were sandy clay loam, sandy loam, clay loam, and sandy loam respectively. Temperature, salinity, turbidity were the parameters that greatly affected the abundance of macrozoobenthos, while substrates such as sand and clay have a major influence on the abundance of macrozoobenthos.

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