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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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Struktur Komunitas Zooplankton di Bendungan Telaga Tunjung, Kabupaten Tabanan-Bali Ni Wayan Desy Wahyudiati; I Wayan Arthana; Gde Raka Angga Kartika
Journal of Marine and Aquatic Sciences Vol 3 No 1 (2017)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Zooplankton are the heterotroph aquatic organisms and has a week swimming. Zooplankton acts as the first consumer in the waters, which utilize phytoplankton as their food. This research located in Telaga Tunjung reservoir, Timpag Village, Kerambitan Subdistrict, Tabanan Regency. The reservoir is used for industry, irrigation and tourism development. The aim of the research was to determine the community structure of zooplankton in Telaga Tunjung reservoir. This research was conducted from January to February 2016. Water sampling was conducted twice with a sampling interval of 2 weeks in 4 stations. There was a total of 23 species of zooplankton found, consisting of 6 classes: Eurotatoria (8 genera), Ciliatea (1 genera), Branchiopoda (4 genera), Monogononta (1 genera), Tubulinea (1 genera) and Maxillopoda (3 genera). The most common species of zooplankton found in the sampling station were Polyarthra vulgaris (3.04 ind/l), Anuraeopsis coelata (1.28 ind/l), Keratella valga (0.43 ind/l), Vorticella sp. (0.49 ind/l), Diaphanosoma brachyurum (0.28 ind/l), Nauplius sp. (0.16 ind/l) and Megacyclops viridis (1.16 ind/l). The average abundance of zooplankton was 9.38 ind/l. Based on the abundance of zooplankton, the trophic status of Telaga Tunjung reservoir is mesotrophic.

Deteksi Perubahan Garis Pantai Menggunakan Citra Synthetic Aperture Radar (SAR) di Pesisir Tenggara Bali (Kabupaten Gianyar dan Klungkung) Kadek Dwi Artama; I Wayan Gede Astawa Karang; I Nyoman Giri Putra
Journal of Marine and Aquatic Sciences Vol 5 No 2 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Coastline change is a phenomenon caused by sediment decrease or increase in the coastal area that occurs continuously. This phenomenon is caused by abrasion, erosion, and accretion. Bali is one of the provinces that have coastal with quite noticeable conditions, which is the southeast coast of Bali, the coast of Gianyar and Klungkung Regencies. Identification of coastline changes is important to determine policies that can be taken to maintain coastal balance. Remote sensing is one way to identify coastline change. In this study, the image used is SAR images of ALOS PALSAR and Sentinel-1 satellites with a resolution of 10 meters to extract the coastlines of Gianyar and Klungkung in 2007 and 2018. Method used for shoreline extraction is Image Threshold pproach. Coastline changes analysis in this study used the Digital Shoreline Analysis System (DSAS) application. Analysis results of coastline changes in Gianyar and Klungkung for 11 years in range shown the highest erosion and accretion occurred in the Klungkung coastal with erosion area reached 168,142.05 m2, and the accretion area reached 207,531.2 m2. Coastal change in Gianyar Regency caused by erosion reached 124,930.5 m2, and the accretion area reached 85,123.86 m2. The highest change rate in Gianyar occurred in Saba village at the rate of 2.63 m/year in erosion, whereas in Klungkung it occurred in Gunaksa village reaching 13.25 m/year in accretion.

Analisis vegetasi dan struktur komunitas Mangrove Di Teluk Benoa, Bali Dwi Budi Wiyanto; Elok Faiqoh
Journal of Marine and Aquatic Sciences Vol 1 No 1 (2015)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Hutan mangrove merupakan salah satu sumber daya alam yang mempunyai nilai dan arti yang sangat penting baik dari segi fisik, biologi maupun sosial ekonomi. Akibat meningkatnya kebutuhan hidup sebagian manusia telah mengintervensi ekosistem tersebut. Hal ini dapat terlihat dari adanya alih fungsi lahan mangrove menjadi tambak, permukiman, areal industri dan sebagainya.Salah satu kawasan hutan mangrove di Bali adalah Teluk Benoa. Tujujan penelitian ini yaitu untuk mengetahui struktur dan vegetasi dan jenis-jenis mangrove yang dominan di hutan mangrove Teluk Benoa-Bali. Metode yang digunakan dalam penelitian ini adalah sample survey method atau survey di lapangan. Pada setiap stasiun pengamatan sepanjang transek garis, dibuat petak (plot) dengan ukuran 10 meter x 10 meter sebanyak 3 plot untuk tiap stasiun. Selanjutnya pada setiap plot dilakukan pengamatan dan penghitungan jumlah individu mangrove per spesies yang ditemukan. Untuk keperluan analisis data, masing-masing individu pohon, anakan dan semai dicatat nama jenis dan keliling batang setinggi dada, sedangkan untuk vegetasi strata seedling dicatat nama jenis dan jumlah individu masing-masing jenis. Vegetasi mangrove yang ditemukan yaitu 11 spesies mangrove sejati dan 1 jenis mangrove ikutan yaitu Waru Laut (Thespesia popunema). Pada stasiun I, vegetasi mangrove tingkat pohon didominasi oleh Sonneratia alba (INP) sebesar 130.61, tingkat anakan didominasi oleh Rhizophora mucronata (INP) sebesar 246.11. Pada stasiun II, vegetasi mangrove tingkat pohon didominasi oleh Rhizophora mucronata (INP) sebesar 109.59, sedangkan tingkat anakan didominasi oleh Rhizophora stylosa (INP) sebesar 91.60. Pada stasiun III, vegetasi mangrove tingkat pohon didominasi oleh Rhizophora apiculata (INP) sebesar 92.26, sedangkan tingkat anakan didominasi oleh Rhizophora apiculata (INP) sebesar 82.89. Pada stasiun IV, vegetasi mangrove tingkat pohon didominasi oleh Sonneratia alba (INP) sebesar 93.77, sedangkan tingkat anakan didominasi oleh Avicennia marina (INP) sebesar 103.04. Pada stasiun V, vegetasi mangrove tingkat pohon didominasi oleh Bruguira gymnorrhyiza (INP) sebesar 115.31, sedangkan tingkat anakan didominasi oleh Rhizophora stylosa (INP) sebesar 136.62.

Simpanan Karbon Pada Padang Lamun di Kawasan Pantai Mengiat, Nusa Dua Bali I Kadek Vidyananda S Rahadiarta; I Dewa Nyoman Nurweda Putra; Yulianto Suteja
Journal of Marine and Aquatic Sciences Vol 5 No 1 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Human activity is the most contributor of carbon dioxide gas (CO2) to the air. The oceans have an important role in the carbon cycle, about 93% of the Earth's CO2 is stored in the oceans. Seagrass is one of sea plants that has a role as carbon sinks in ocean. Seagrass beds are able to absorb carbon by an average 0.21 tons/ha and the important species are Enhalus acoroide. The aim of this study is determine the carbon storage in seagrass at aboveground (leaf), belowground (roots and rhizomes) and carbon storage on each species of seagrass obtained at Mengiat coastal area. Determination of sampling point refer to seagrass density that used by purposive sampling. This method was assumed to represent or describe the condition of this area. This research used dry dyeing method which components sample was destruction with 500oC inside the furnace. The results showed that carbon storage of seagrass at belowground (root and rhizoma) is 25.70 gC/m2, and aboveground (leaf) is 17.18 gC/m2. Carbon storage at belowground is higher than aboveground because carbon will accumulate in the sediment. The type of seagrass that is obtained at Mengiat coastal area is Thalassodendron ciliatum, Thalassia hemprichii, Cymodocea serrulata, Halodule uninervis, Cymodocea rotundata, and Syringodium isoetifolium, the highest carbon storage are 62.46 gC/m2 is owned by Thalassodendron ciliatum, and the lowest carbon storages are 17.25 gC/m2 is owned by Syringodium isoetifolium.

Peranan Padang Lamun Selatan Bali Sebagai Pendukung Kelimpahan Ikan di Perairan Bali Elok Faiqoh; Dwi Budi Wiyanto; I Gede Budi Astrawan
Journal of Marine and Aquatic Sciences Vol 3 No 1 (2017)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Seagrass ecosystem is providing feeding ground, nursery ground, spawning ground , habitat and shelter area. The threat of physical destruction such as the reclamation, pollution, sedimentation and tourism activities decreasing the diversity and the abundance of fishery commodities. The purpose of this study was to describe the condition of seagrass, determine the composition and abundance of seagrass fish in the three Southern coast of Bali and assess the association of fish-sea grass. Samples were taken from three coastal areas, Samuh, Shindu and Serangan coastal area. The results are in Samuhthere are 6 types of seagrass, in Shindu there are 7 types and in Serangan there are three types, whichdominates with Cymodocea rotundata and Syringodium isoetifolium. From the three coastal areas,we found 21 families of fish, where the family Pomacentridaehas the highest species abundance in Samuh, Apogon sp in Serangan and Terapon sp. found in Shindu. We can see the interaction between the seagrass ecosystems of coral reefs in the waters of South Bali and ecological role of seagrass from the family and species of fish.

Kimia Fisik Perairan dan Ektoparasit Ikan Nila dan Patin Di Situ Gintung, Tangerang Selatan, Banten Dinda Rama Haribowo; Syifa Annisa; Nur Kholidah; Nia Dzirwatul Izza; Pratiwi Amalia Zahrah; Ario Putro Pamungkas; Firdaus Ramadhan; Alfan Farhan Rijaluddin; Yayan Mardiansyah Assuyuti
Journal of Marine and Aquatic Sciences Vol 5 No 2 (2019)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Poor water quality based on physical and chemical waters is one of the factors that influence the infection and presence of fish ectoparasites. The aim of study was to determine the physical and chemical waters, the types and prevalence of ectoparasites and the correlation of ectoparasites with physical and chemical waters. The study was conducted in Situ Gintung, South Tangerang from March to June 2018 with samples from Floating Net Cages (KJA) and fishing. The results showed that the physical and chemical waters generally within standard quality for fish cultivation. The number and type of fish ectoparasites consist of Trichodina sp., Chilodonella sp., Litonotus sp., Vorticella sp., Dactylogyrus sp. and Capillaria sp. Based on the Canonical Correspondence Analysis (CCA) shows that ectoparasites are affected by physical and chemical waters.

Perbandingan Laju Pertumbuhan Tukik Penyu Lekang (Lepidochelys olivacea) dengan Pemberian Pakan Ikan Tongkol, Udang Rebon Kering dan Pakan Campuran Cornelia Coraima Lazaren; I Wayan Gede Astawa Karang; Elok Faiqoh
Journal of Marine and Aquatic Sciences Vol 4 No 1 (2018)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

The population of olive ridley has declined in Indonesia, so that efforts are needed to preserve this turtle population through conservation. In conservation of olive ridley, the selection of the precise feed will affect for a good growth. Feed that has high protein content one of them is dried rebon shrimp and tongkol fish. The utilization of feed from dried rebon shrimp and tongkol fish, especially mix feed of these two feeds for olive ridley baby is still very limited information. This research aims to determine the comparison growth rate of olive ridley with a feeding of tongkol fish, dried rebon shrimp and mixed feed also to know the percentage of feed efficiency. The research was conducted for six weeks at the conservation center TCEC Serangan, Bali. The design method used was Completely Randomized Design (CDR) with one control and three treatments, each treatment getting five repetitions. ANOVA analysis was used to analyze the mean differences between groups and the calculation of feed efficiency was performed to see the percentage of feed that was most efficient in the body of the hatch. The results showed different feeds gave different growth rates. The high protein on mixed feeds has produced the highest growth rates compared with dried rebon shrimp and tongkol fish feed. Similarly, the percentage efficiency of mixed feed is more efficient compared with dried rebon shrimp and tongkol fish feed.

Status Pencemaran Lingkungan Sungai Badung dan Sungai Mati di Provinsi Bali Berdasarkan Bioindikator Phylum Annelida Mawardi Labbaik; I Wayan Restu; Made Ayu Pratiwi
Journal of Marine and Aquatic Sciences Vol 4 No 2 (2018)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Water pollution is the entry or inclusion of substances, energy and other components into the water by human activities, so that water quality decrease to a certain level. This study a timed to monitor the pollution of aquatic environment in the Badung River and Mati River by using Annelida phylum as bioindicator, the study was conducted from February to March 2017. The data obtained were analyzed by the structure of the community, and also used ABC (Abudance-Biomass Comparison) method. The result of the research showed that the most abundance of Annelida and dominant from all stations of Badung River and Mati River was Lumbriculus variegatus. Is showed that it contamination status was categorized as mild contamination because it was dominant by facultative organism. The structure of the Annelida community in the Badung River and Mati River with the value of the diversity index was categorized as low Annelida (H '<1.0). The uniformity index was categorized as depressed Annelida community (0.00 <E 0.50), high dominance index of Badung River (0.75 <C ? 1.00), Mati River was medium (0.50 < C < 0.75). The result of the water quality range as the supporting factor showed the average support for Annelida life i.e the current velocity 0.16 - 0.61 m/s, the temperature 25.5 - 31oC, DO 3-7.2 mg/l, pH 7.77 - 8.44 and BOD5 0.5 - 3.1 mg/l. The analysis environmental pollution condition of Badung River and Mati River with Annelida as bioindicator by using ABC method showed that were medium contaminated.

Distribusi Nitrat dan Fosfat Secara Spasial dan Temporal Saat Musim Barat Di Permukaan Perairan Teluk Benoa, Bali Ni Wayan Sukma Taraning Rahayu; I Gede Hendrawan; Yulianto Suteja
Journal of Marine and Aquatic Sciences Vol 4 No 1 (2018)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Benoa Bay is an estuary that effected by pollutan from river and human activity. Reasearch on spatial and temporal distribution of nitrate and phosphate has been conducted in Benoa Bay. Data was collected at water surface during ebb from December 2016 to Februari 2017. There were19 Sampling pointlocated in Benoa Bay and 6 pointslocated in rivers around Benoa Bay. Nitrate was analysed using Brucine method and phosphate was analysed using Amm-Molybdat method. The concentration of nitrate from December 2016 to February 2017 ranged from 0,036 mg/L to 1,154 mg/L and the concentration of phosphate ranged from undetectedto 0,739 mg/L. The concentration of nitrate at rivers ranged from undetectedto 3,584 mg/L andthe concentration of phosphate ranged from undetectedto2,405 mg/L. The concentration of nitrate and phosphate from December 2016 to February 2017 was fluctuating and the highest average concentration of nitrat and phosphate was found in February 2017. These was due to high rainfall in February 2017 and cause a lot of organic matters carried by the rivers into Benoa Bay. The highest distribution concentration of nitrate and phosphate was found around estuary. These due to input of organic matters from mainland through the rivers. Based on water quality standards of Bali Goverment, the concentration of nitrate and phosphate was exceeds the seawater quality standart.

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%.

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