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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 7 Documents

Search results for , issue "Vol 2 No 1 (2016)" : 7 Documents clear

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.

Kajian Pengembangan Usaha Budidaya Rumput Laut Di Pantai Kutuh, Badung, Provinsi Bali Ayu Putu Wiweka Krisna Dewi; Suprabadevi Ayumayasari Saraswati
Journal of Marine and Aquatic Sciences Vol 2 No 1 (2016)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Usaha budiaya rumput laut merupakan salah satu komoditas unggulan perikanan yang sebagian besar masih ditekuni oleh masyarakat peisisr di Kabupaten Badung. Salah satu wilayah yang merupakan pusat pengembangan budidaya rumput laut adalah di Kecamatan Kuta Selatan, Kabupaten Badung yaitu tepatnya di Pantai Kutuh, Desa Kutuh. Pantai kutuh yang sekarang dikenal sebagai Pantai Pandawa berkembang menjadi daerah pariwisata. Perkembangan itu dapat mempengaruhi perkembangan usaha budidaya rumput laut yang sudah ada sebelumnya, namun pembudidaya tetap mempertahankan pengembangan usaha budidaya rumput laut. Berdasarkan hasil penelitian diketahui bahwa karakteristik pembudidaya rumput laut yang ada di Pantai Kutuh adalah (1) umur pembudidaya masih tegolong produktif, (2) sebagian besar tingkat pendidikan pembudidaya adalah lulusan SMA, (3) pekerjaan utama pembudidaya ada budidaya rumput laut jenis Halymenia sp. dan pekerjaan sampingan pembudidaya adalah beternak sapi, nelayan, pemandu wisata dan buruh proyek. Berdasarkan data hasil penelitian, diketahui bahwa pertumbuhan dan kualitas air budidaya rumput laut jenis Halymenia sp. tergolong baik, namun pengembangan usaha budidaya rumput laut jenis Halymenia sp. mengalami kendala dalam hal pemasaran rumput laut kering hasil budidaya.

Studi Komunitas Makrozoobenthos di Kawasan Hutan Mangrove Pulau Penyu, Tanjung Benoa, Bali Elok Faiqoh; Henny Hayati; Kadek Yudiastuti
Journal of Marine and Aquatic Sciences Vol 2 No 1 (2016)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

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.

Coral Reef Coverage Percentage on Binor Paiton-Probolinggo Seashore Dwi Budi Wiyanto
Journal of Marine and Aquatic Sciences Vol 2 No 1 (2016)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

The coral reef damage in Probolinggo region was expected to be caused by several factors. The first one comes from its society that exploits fishery by using cyanide toxin and bomb. The second one goes to the extraction of coral reef, which is used as decoration or construction materials. The other factor is likely caused by the existence of large industry on the seashore, such as Electric Steam Power Plant (PLTU) Paiton and others alike. Related to the development of coral reef ecosystem, availability of an accurate data is crucially needed to support the manner of future policy, so the research of coral reef coverage percentage needs to be conducted continuously. The aim of this research is to collect biological data of coral reef and to identify coral reef coverage percentage in the effort of constructing coral reef condition basic data on Binor, Paiton, and Probolinggo regency seashore. The method used in this research is Line Intercept Transect (LIT) method. LIT method is a method that used to decide benthic community on coral reef based on percentage growth, and to take note of benthic quantity along transect line. Percentage of living coral coverage in 3 meters depth on this Binor Paiton seashore that may be categorized in a good condition is 57,65%. While the rest are dead coral that is only 1,45%, other life form in 23,2%, and non-life form in 17,7%. A good condition of coral reef is caused by coral reef transplantation on the seashore, so this coral reef is dominated by Acropora Branching. On the other hand, Mortality Index (IM) of coral reef resulted in 24,5%. The result from observation and calculation of coral reef is dominated by Hard Coral in Acropora Branching (ACB) with coral reef coverage percentage of 39%, Coral Massive (CM) with coral reef coverage percentage of 2,85%, Coral Foliose (CF) with coral reef coverage percentage of 1,6%, and Coral Mushroom (CRM) with coral reef coverage percentage of 8,5%. Observation in 10 meters depth resulted in coral reef coverage percentage of 63,33%. 75% of living coral found on this 10 meters depth are dominated by Acropora branching coral, while the rest 25,21% are filled by Acropora tabulate coral and non-Acropora coral in the life form of branching, massive, sub-massive, foliose, and mushroom, where coral Mortality Index (IM) reached 28,5%. The high number of coral reef coverage percentage on Paiton is caused by successful coral transplantation and low activity of society in this location. The domination of large size Acropora branching coral were estimated comes from a few types, showing that coral resulted from transplantation has grown large and form a complex 3 dimension structure that is suitable for the life form of fish and living benthic.

Karakteristik Total Padatan Tersuspensi (Total Suspended Solid) Dan Kekeruhan (Turbidity) Secara Vertikal Di Perairan Teluk Benoa, Bali I Gede Hendrawan; Devi Ulinuha; I Putu Ranu Fajar Maharta
Journal of Marine and Aquatic Sciences Vol 2 No 1 (2016)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Benoa bay is one of estuary that located in the Southern part of Bali Island, and as a strategic tourism destination. The increased of the human activity has an important role to give an ecological pressure for the seawater ecosystem in the Benoa bay. Total suspended solid (TSS) and turbidity is one of the important indicators that could be determining the quality of the seawater. As the estuary, Benoa bay received fresh water from the river discharge that also potentially carries any material to the bay. In addition, port activity is also has an important role in contributing a various material to the Benoa bay. From this research, we found that the TSS concentration and the turbidity are higher in the surface water and also in the bottom layer. TSS concentration and the turbidity also varied from the bay mouth trough the line of vessel onto the inner of bay. TSS concentration and turbidity in the bay mouth has a smaller concentration rather than in the inner part of bay. TSS concentration and turbidity in the inner of bay could be caused by the port activity. In addition, seawater circulation is also has an importan factor to contributing the TSS concentration and the turbidity. Sea current would be erroted the seabottom and with the different shape of the topography could be increased the TSS and turbidity.

Identifikasi Bakteri pada Rumput Laut Euchema spinosum yang terserang penyakit Ice-ice di Perairan Pantai Kutuh Suprabadevi Ayumayasari Saraswati; I Made Sena Darmasetiyawana
Journal of Marine and Aquatic Sciences Vol 2 No 1 (2016)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

The main causes of ice-ice disease that seaweed production will decline. Bacterial infections occur due to fluctuations in climate change resulted in a decrease in water quality resulting in the durability of seaweed. When seaweed stress will facilitate pathogen infection. Disease pathogens cause damage to internal organs. The spread of bacterial disease in seaweed is generally very fast and can lead to death, so that the loss caused by this disease is quite large. Ice-ice disease occurrence is seasonal and contagious, so the impact on the selling price low. The results showed that there are two types of pathogenic bacteria that can potentially cause disease in which bacteria Vibrio alginoliticus and Pseudomonas aeruginosa. Climate change affects the spatial distribution of micro seaweed bacterial pathogens.

Profil Hemosit dan Aktifitas Fagositosis Kepiting Bakau (Scylla sp.) yang Terserang Ektoparasit di Ekosistem Mangrove Kuta Selatan, Bali Alfi Hermawati Waskita Sari; Rani Ekawaty
Journal of Marine and Aquatic Sciences Vol 2 No 1 (2016)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Mangrove crab (Scylla sp.) is one of the commodities that live in the mangrove ecosystem and were developed through cultivation, but it encountered many obstacles in its development mainly due to parasitic infection. The purpose of this study is to determine the hemocytes profile and the phagocytic activity of the mud crab (Scylla sp.), in terms of parasitic infection and the water quality of the mangrove ecosystem in South Kuta, Bali. The results of study showed the Haemocyte Total Count (THC) of mangrove crab in the range of 1.8 to 2.57x106 cells/ml and Haemocyte Differential Count (DHC) mud crab shows the percentage of cells hyalinosit 14-32%, 24-38% and the semigranulocytes cells 39-58% of granulocytes cells, phagocytosis percentage of the mud crab (Scylla sp.) are in the range of 53%-66%, while the index of phagocytosis 1.81-2.11. Type ectoparasites found in mangrove crab (Scylla sp.), among others are Vorticella sp., Zoothamnium sp. and Epistylis sp.

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