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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 13 Documents

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Search results for , issue "Vol 3 No 2 (2017)" : 13 Documents clear

Kandungan Nitrat dan Fosfat Sedimen serta Keterkaitannya dengan Kerapatan Mangrove di Kawasan Mertasari di Aliran Sungai TPA Suwung Denpasar, Bali Ni Nyoman Desi Kusuma Dewi; I Gusti Ngurah Putra Dirgayusa; Yulianto Suteja
Journal of Marine and Aquatic Sciences Vol 3 No 2 (2017)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Mangrove is a green plants tolerant of salt water, which grows mainly along the sheltered coastal areas, especially along the bay or in estuaries. Final Disposal (TPA) Rubbish Suwung which located in the village Pedungan South Denpasar District is the rubbish dumps originating from the city of Denpasar and Badung. There is a natural mangrove vegetation in the river TPA. Mertsari area which located in the village of Sanur, West Denpasar District is a mangrove planting area and tourism destination on the Mertasari Beach. The purpose of this research are as follows: (1) To identify the content of nitrate and phosphate in mangrove sediments, (2) To determine the density of mangrove in Region Mertasari and TPA Suwung River Flow and (3) To describe the mangrove density is linkage with nitrate and phosphate mangrove sediments. The method used on this research is linear regression. Nitrate and phosphate sediments of mangroves in TPA Suwung River Flow and Region Mertasari range of 0.04 ppm - 79.034 ppm. The average density results of the mangrove tree level, saplings and seedlings in different locations ranged 0.01 ind / m2 - 0.32 ind / m2. The river's flow TPA Suwung produce a simple linear regression calculation of nitrate mangrove sediments density y = -0,002x + 0,288 (R2 ) 10,1 %, and the calculation of the density sedimentary phosphate mangrove produce y = 0,007x + 0,125 (R2) 6,1 %. The results of simple linear regression calculation of nitrate sediments density Mertasari mangrove area is y = -0,002x+ 0,537 R2 = 4,7%, and the calculation of the density sedimentary phosphate mangrove produce y = -0,038x + 0,777 (R2) 63,7 %.

Studi Laju Perubahan Garis Pantai di Pesisir Tenggara Bali Menggunakan Citra Satelit Landsat (Studi Kasus Kabupaten Gianyar dan Klungkung) I Nengah Jaya Nugraha; I Wayan Gede Astawa Karang; I Gusti Bagus Sila Dharma
Journal of Marine and Aquatic Sciences Vol 3 No 2 (2017)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Erosion and abrasion are the events that led to the beach shoreline position changes. The impact of climate change is the rise in sea level also causes changes in the coastline. South East coast of Bali, especially along the coast Gianyar and Klungkung changing coastline. This study aims to identify and calculate the rate of shoreline change in Gianyar and Klungkung from 1995 to 2015. The study was a preliminary information shoreline change and do not analyze the causes such as tides, currents, waves, and wind. The method used remote sensing analysis with the extraction of the coastline from the Landsat 5 satellite images in 1995, Landsat 7 in 2005, and Landsat 8 2015. Landsat imagery analyzed by a combination of methods approach the threshold and band ratio of wave infrared and green. Image processing using software Quantum GIS 2.8 and System for Automated Geoscientific Analyses (SAGA) GIS 2.2, extention Digintal Shoreline Analysis System (DSAS) to make calculations transect coastline. The results of the analysis of overlaying identify coastline in Gianyar and Klungkung change at a rate that varies every village. The rate of change of coastline in Gianyar due to accretion between 0.5096 - 8.6074 m / yr, while due to erosion between -3.7343 to -1.3201 m / yr. The rate of change in Klungkung regency coastline due to accretion between 0.6337 - 2.6875 m / yr, while due to erosion between -8.8795 to -0.8833 m / yr.

Pengaruh Hasil Tangkapan Ikan Tongkol (Euthynnus sp) dan Pendapatan Keluarga Nelayan Terhadap Tingkat Pendidikan Anak Keluarga Nelayan di Desa Seraya Timur, Kecamatan Karangasem, Kabupaten Karangasem Ni Kadek Apriantari; I Gusti Ngurah Putra Dirgayusa; Abd. Rahman As-syakur
Journal of Marine and Aquatic Sciences Vol 3 No 2 (2017)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

The East Seraya village has a potential of marines and fisheries, such as pelagic fish especially mackerel tuna fish according, production of tuna fish catch of 81% with the of catches 20.278,10 ton/year. Research on the effect of catch fish and income of fisherman family on education level of children of fisherman family have been done at Seraya village. Data were collected in each group of fishermen from January to February 2017. The sample was taken using simple random method, with 89 respondents. Methods for the analysis of the effect of tuna catch and family income of fishermen on education level of children of fishermen family using multinomial logistic regression analysis with software SPSS (Statistical Package for Social Science. The educational level of the fishermen family has been completed at the level of fishermen children as follows; 2,2% for elementary school 14,6 % for junior high school, 33,7% for senior high school, 31,5 % for diploma, and 18,0%. Coefficient of R square determination Cox and Snell value is 0,940 which means that mackerel tuna fishing results and the fishermen incomes are simultaneous with the education level of fishermen children in the amount of 94%. Variable contribution of mackerel tuna fishing results (X1) which much affect the education level of fishermen children and the income of fishermen household (LnX2) affects the education level of fishermen children which is significant.

Analisis Hubungan Kondisi Perairan dengan Terumbu Karang di Desa Pemuteran Buleleng Bali Sabil Al Alif; I Wayan Gede Astawa Karang; Yulianto Suteja
Journal of Marine and Aquatic Sciences Vol 3 No 2 (2017)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Coral reefs in the village of Pemuteran used for tourism activities. In the process of growth, the coral reef is strongly influenced by the water conditions both physical and chemical factors. This study aims to determine the characteristics of the water based physical and chemical factors, determine the percentage of coral cover, determine the relationship and influence the quality of the waters with coral reefs. Research carried out at Pemuteran Village in Mey 2016. The method used is linear transects and transect quadrant, principal component analysis to determine the effect of water quality parameters and relationships with coral reef. The results of the characteristics of the waters on physical factors, namely temperature 30 – 31°C, depth 4– 75 m, brightness 13 m, turbidity 1,2 –5,4 NTU, current velocity 0,1 – 0,4 m/s, and the substrate of sand. Based on chemical factors, namely salinity 31,25 – 31,55 ‰, pH 6,9–7,5, DO 5,5 – 6,4 mg/l, BOD5 0,57 – 0,76 mg/l, TSS 248–504 mg/l, nitrate 0,021 - 0,908 mg/l, and phosphate 0,065-0,95 mg/l. Coral cover percentage point 1 at 50,67%, points 2 at 65%, points 3 at 35%,points 4 at 85,33% and points 5 at 16,67%. While the point 6 - 10 there are no coral reefs. The main components of water quality that affect to the coral reef are the turbidity and substrate. The results show that the correlation of temperature and nitrate correlated very weakly. pH, DO, BOD5 and phosphate correlated enough. Salinity, current, and TSS strongly correlated. Depth, brightness, turbidity and substrate strongly correlate.

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.

Total Suspended Solid (TSS) Distributed by Tidal Currents during Low to High Tide Phase in the Waters of Sayung, Demak: Its Relations to Water Quality Parameters Ulung Jantama Wisha; Koko Ondara
Journal of Marine and Aquatic Sciences Vol 3 No 2 (2017)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Sayung waters is a region highly vulnerable to catastrophic erosion along the coast, which is directly followed by an increase suspended sediments and particles from the bottom of the waters that was stirred by oceanography factors. The purpose of this study was to determine the concentration and distribution of the latest TSS condition and its effect on water quality parameters in the waters of Sayung. The sampling method is using purposive sampling, with the stations spread out along the coastal area of Sayung, the main data consist of current, tide, bathymetry, coastline and water quality, and the secondary data consist of RBI map and tide forecasting, those data is analyzed numerically and statistically. TSS value ranged between 23,1-199,6 mg.L-1, the distribution of TSS is simulated in the condition of ebb to tide with current speed ranged between 0-0.41 ms-1, that distribution also influenced by physical water factors such as salinity, temperature, and density and has impacts to enhancing the turbidity and indirectly decrease the photosynthesis activity and inhibit the oxygen cycle in the Sayung waters.

Pengaruh Nitrat (NO3) Terhadap Pertumbuhan Alami Eceng Gondok (Eichornia crassipes Solms.) Berdasarkan Biomassa Basah Di Danau Batur, Kintamani, Bali Lisa Rosalia Prayuda; I Wayan Arthana; Ayu Putu Wiweka Krisna Dewi
Journal of Marine and Aquatic Sciences Vol 3 No 2 (2017)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Batur Lake is one of the natural lakes in the province of Bali where the activity of fishing, agriculture, tourism and housing available. This study aims to determine the effect of nitrate relation to the natural growth of the water hyacinth (Eichornia crassipes). Increased water hyacinth biomass in Songan station is the highest among the three other stations (Batur, Buahan, and Trunyan). At the end of the study (day 42 ), water hyacinth biomass of Songan station increased by 338.2 % from the initial weight, while at another station the increase weight ranges from 75 % -158 %. The highest daily growth rate in Trunyan station 3.68% / day, and the lowest in station Buahan which only reached 0.88% / day. At the Songan station where are many floating net which contribute to increase nitrate. There is a tendency of growth of water hyacinth faster at higher nitrate conditions. Nitrate conditions ranged from 0,35 to 0,62 m /l which shows that the waters of Batur Lake classified into waters that have a high fertility rate (eutrophic).

Analisis Kualitas Perairan Pada Wilayah Perairan Pulau Serangan Bagian Utara Berdasarkan Baku Mutu Air Laut Ni Luh Gede Rai Ayu Saraswati; I Wayan Arthana; I Gede Hendrawan
Journal of Marine and Aquatic Sciences Vol 3 No 2 (2017)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Water quality monitoring is one of important activity, especially in coastal water, which susceptive with pollution. Water area of Serangan Island is a tidal flat area, influenced by fresh water and sea water inputs. The existence activities, such as cage aquaculture and tourism, and input from river, are threatened to decrease the water quality in north of Serangan water. This research was conducted to the condition of water quality based on water quality standard for aquatic organisms and its spatial distribution. The parameters measured were temperature, salinity, pH, DO, turbidity, and BOD5, in 8 sample points. Some parameters measured directly on water surface (temperature, salinity, pH and DO) and the others were analyzed in laboratory (turbidity, and BOD5). BOD5 was analyzed by standard method of Delzer & McKenzie. Based on research, the result of temperature values ranged from 28,9°C-30,5°C; salinity 29,6 ppt-32,7 ppt; pH 7,7-7,9; DO 3 mg/L-4,4 mg/L; turbidity 1,9 ntu-7,6 ntu; and BOD5 2,8 mg/L-5,4 mg/L. The water quality in Serangan had a different spatial distribution in each parameters. Overall, based on research result, the water quality condition in the body water of Serangan island was good and suitable to support aquatic organisms living.

Distribusi Spasial Total Padatan Tersuspensi Puncak Musim Hujan Di Permukaan Perairan Teluk Benoa, Bali I Gede Surya Risuana; I Gede Hendrawan; Yulianto Suteja
Journal of Marine and Aquatic Sciences Vol 3 No 2 (2017)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Benoa Bay is semi- enclosed bay, which has embouchures. The existence of embouchures are able to contribute the Total Suspended Solid (TSS) to the Bay. As the one of pollution parameter, TSS could be influencing the ecosystem of coral reefs, seagrass, and the existence of dissolved oxygen. This research was aimed to know the spatial distribution of TSS on the surface layer in Benoa Bay. Sample was taken on January 2016, in flood and ebb. TSS was analyzed using gavimetry method based on SNI No. 06-6989.3-2004. Spatial distribution was analyzed by interpolation method- Inverse Distance Weighted (IDW). The concentration range of TSS on January in ebb to tide and tide to ebb was 22.44 mg/L to 261.33 mg/L. The highest distribution in flood was dominated in around of embouchures. It was suspected by inputs of suspended matter from land to the bay. In tide to ebb condition, TSS concentration was high in some areas, such as around the embouchures, midlle and mouth area of bay. The high concentration was suspected by pattern of tidal current in Benoa Bay. The pattern of current in ebb was leaving to the mouth of Benoa Bay, therefore the TSS concentration dispersed to the mouth of the bay.

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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