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Contact Name
Prof. Dr. Dietriech Geoffrey Bengen, D.E.A
Contact Email
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Phone
+622518627323
Journal Mail Official
jurnalitkt@apps.ipb.ac.id
Editorial Address
Departement of Marine Science and Technology, Faculty of Fisheries and Marine Science, Bogor Agricultural University (IPB)
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Kota bogor,
Jawa barat
INDONESIA
Jurnal Ilmu dan Teknologi Kelautan Tropis
ISSN : 20879423     EISSN : 20856695     DOI : -
Core Subject : Science,
Journal of Tropical Marine Science and Technology (Jurnal Ilmu dan Teknologi Kelautan Tropis)  is a scientific journal in the field of tropical marine science and technology. We have a aims and scope to focus in publishing a good quality scientific articles for dissemination of research results in the field of marine science and technology. 
Arjuna Subject : Umum - Umum
Articles 467 Documents
THE STUDY OF FERTILITY MARINE ECOSYSTEM OF SOUTHEAST SULAWESI BASED ON BACTERIOLOGICAL ASPECT Kunarso, Djoko Hadi
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 3 No. 2 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (453.155 KB) | DOI: 10.29244/jitkt.v3i2.7820

Abstract

The study of waters fertilization in Southeast Sulawesi include Flores Sea, Kabaena Strait, Muna Strait, Buton Strait and Tioro Strait based on bacteriological aspect was conducted on April?May 2006, using the Research Vessel Baruna Jaya VII with total stations 25. The aim of investigation was to find out the total numbers and pattern of distribution heterotrophic bacteria and productivity bacteria in the marine ecosystem of Southeast Sulawesi and related with waters fertilization. The analysis of heterotrophic bacteria was determined based on the Total Plate Count method, whereas bacterial productivity with Acridine Orange Direct Count method. The result indicated that the pattern of distribution and total numbers of heterotrophic bacteria at the surface layers varied between (10?10220)CFU x 10-1/ml with an average 940CFU x 10-1/ml. While at the bottom layer varied between (2?488)CFU x 10-1/ml with an average 91CFU x 10-1/ml. For the bacterial productivity in the form of Carbon biomass at the surface layers varied between (1.30? 5.84) x 10?7grC/?m3 with an average 3.56 x 10?7grC/?m3, at the bottom layer varied between (0.24?1.33) x 10?7grC/?m3 with an average 0.64 x 10?7grC/?m3. The result of numbers bacteria that in Southeast Sulawesi waters was lower than the Arafura Sea but still higher than the Aceh Sea. The fluctuation of numbers bacteria perhaps due to the factor of monsoon and environmental was influenced on the marine ecosystem. In general this paper conclude that the condition of marine ecosystem Southeast Sulawesi still relatively fertility.Keywords: Fertility, heterotrophic bacteria, productivity bacteria, Southeast Sulawesi waters
THE CATCH COMPARISON ON RAFIA ROPE AND TRADITIONAL FISH AGREGATING DEVICES IN WEST ACEH WATERS Zuriat; Thahir, Muhammad Agam; Baskoro, Mulyono S.; Gazali, Mohamad
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 2 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (351.246 KB) | DOI: 10.29244/jitkt.v11i2.25031

Abstract

West Aceh Regency has a coastline length of about 50.55 km, with an area of ??sea waters of around 80.88 km2. This condition is inseparable from its location facing directly into the Indian Ocean which is rich in fish. Rumpon, knowned as FADs, is an artificial tool that collects fish using atractors, such as coconut leaves, areca leaves and nipah leaves and other solid objects that serve as a lure for gathering fish. Drifting FADs are non-permanent FADs and are not equipped with anchors so they drift following the movement and direction of the current, while settled FADs are FADs equipped with anchors or weights. The aim of this study was to analyze the composition of species, the amount and weight of the fish caught. The study was conducted in January-July 2018, located in West Aceh waters. The data collected is in the form of primary data, where the collection uses the experimental fishing method. Furthermore, the data were analyzed statistically using the t test. Observations of the catch were carried out for up to 18 trips to traditional and raffia rope FADs. The variables observed in this study were species composition, number and weight of fish caught in both FADs. The results showed that traditional FADs obtained as many as 7,538 fish catches (61.5%) were more than 4,821 (38.5%) raffia rope FADs, with 7 species of fish being dominated by mackerel fish. This shows that traditional FADs are more effective than raffia rope FADs.
MARINE TOURISM SUSTAINABILITY DEVELOPMENT IN MARINE RECREATIONAL PARK ANAMBAS ISLAND Kurniawan, Rika; Yulianda, Fredinan; Susanto, Handoko Adi
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 8 No. 1 (2016): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1062.504 KB) | DOI: 10.29244/jitkt.v8i1.13847

Abstract

Mantang  Besar and Mantang Kecil islands contain marine resources that can be developed for ma-rine tourism activities. For the above purpose, a study is needed to assess the potential of the islands. The objectives of this study were: (1) to analyze the sustainability potential of marine tourism on Man-tang Besar and Mantang Kecil islands and (2) to determine the policy and strategy to develop marine tourism in Mantang Besar and Mantang Kecil islands. Multi-Criteria Analysis (MCA) with Rapid Appraisal Index Sustainability of Ecotourism approach was used for the sustainability analysis of the marine tourism potential in both islands. The results showed that the sustainability status of marine tourism potential on Mantang Besar and Mantang Kecil islands for A dimension (ecology) was in ave-rage of 50.4592 within the category of sustainable, for B dimension (socio-economic) with average of 31.6113 within the category of less sustainable, and C dimension (institutional-technology) with ave-rage of 32.5581 wihtin the category of less sustainable. For the succes of the strategy development, B dimension should be prioritized and followed by B and C dimensions.                                                                                   Keywords: MCA, marine tourism development strategy, Anambas islands
THE MASS SEED PRODUCTION OF GOLDEN TREVALLY FISH (GNATHANODON SPECIOSUS FORSSKAL) WITH DIFFERENT FEED Dharma, Tony Setia
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 6 No. 2 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (95.363 KB) | DOI: 10.29244/jitkt.v6i2.9014

Abstract

ABSTRACT Golden trevally fish is a prospective commodity that can be cultured and contains high economic value. The purpose of this study was to determine the best type of food for golden trevally fish growth. The larval rearing were conducted using concrete tanks with 6 m3 of volume. Three different food were used as treatments, i.e: (a) pellet micro, (b) small shrimp, and (c) trash fish. The start of experiment for larvae were reared for 30 days old. The stocking density of larvae was reared at 10 pc/l. Sampling of larvae were conducted every 7 days to measure of survival rate (SR), total length (TL) and body weight (BW). The larvae were reared with flowthrow system. At 70 days old, larvae were harvested and graded. The results showed that there was no significantly different among treatments (P>0.05) for survival rate, but the growth was significantly difference among treatments (P<0.05). The survival rate (SR) treated with trash fish was 5.38±1.20%, small shrimp 4.05±1.10%, and micro pellet 4.01 ± 1.20%. The total length and weight treated with trash fish were 5.40 ± 0.80 cm and 53±0,50 mg, respectively, while treaded with small shrimp were 4.80 ± 0.20 cm and  61±0.30 mg, and micro pellet were 4.54±0.56 cm and 48±0.40 mg, respectively. Keywords: seed, food type, growth, survival, golden trevally fish.
NURSERY TECHNIQUES WITH JUVENILE CORAL TROUT, PLECTROPOMUS LEOPARDUS WITH DIFFERENT TYPES OF FOOD Alit, Anak Agung; Setiawati, Ketut Maha; Dharma, Tony Setia
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 6 No. 2 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (84.303 KB) | DOI: 10.29244/jitkt.v6i2.9013

Abstract

ABSTRACT Feed management is a critical factor in the nursery activities because food serves as an energy for growth and survival rates. The study aimed to determine the best feeding to improve growth and survival rates. Cultured of coral trout grouper seeds were used for this research in 9 fiber tubs each of  0.8 tonnes of sea water volume with 3 treatments and 3 replicates. The feeding treatments were (a) commercial feeding pelle; (b) trash fish; and (c) feeding combinations (50% pellets and 50% trash fish). The initial length of coral trout grouper seeds were 3 cm long. The pellet used was a commercial pellet with dose of 5-10% biomass, while the trash fish was clupeid fish. Feeding times were twice a daya at 08:00 and 16:00 local time. A complete random design was used as an experiment design. Data was analysed using ANOVA and descriptive statistics. Water qualities during larva rearing included water temperature, pH, salinity, DO, ammonia, nitrite, and phosphate. The results showed that growth dan survical rates was significantly affected by combination feeding method (50% pellet and 50% trash fish) with growth rate of 0.08% cm/day and survival rate of 60.20±2.34%. Keywords: Feed, trash fish, juvenile coral trout grouper, growth, and survival.
A NUMERICAL MODELING STUDY ON UPWELLING MECHANISM IN SOUTHERN MAKASSAR STRAIT Atmadipoera, Agus S; Widyastuti, Priska
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 6 No. 2 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2667.723 KB) | DOI: 10.29244/jitkt.v6i2.9012

Abstract

ABSTRACT While it has been well documented in the previous studies that upwelling events in the southern Makassar Strait (MAK) during the Southeast Monsoon (SEM) period are associated with low sea surface temperature (SST) and high chlorophyll-a (Chl-a) concentrations in the seawater, the dynamic and physical processes that trigger these upwelling events are still less well understood. In the present study we proposed a mechanism of the upwelling event using a numerical model of the Regional Ocean Modeling System (ROMS).  Model validations showed a high correlation of SST climatology between the model and the NOAA-AVHRR satellite data. Moreover, velocity fields of the Indonesian Throughflow (ITF) Makassar in Libani Channel was well reproduced by proposed model, revealing an intensification of the flow centered near 120 m depth, which is in good agreement with the observation data. The model demonstrated that during the SEM period strong southeasterly winds that blow over southern Sulawesi Island can increase high vertical diffusivity and heat loss through heat flux. Hence, these physical processes lead to increased vertical mixing that, in turn, generates low SST, as a proxy of upwelling event. Furthermore, the upwelling process is enhanced by the ITF Makassar jet that creates large circular eddies flow due to complex topographic within the triangle area of southern Makassar - eastern Java Sea - western Flores Sea. The eddies generate the area of convergence offshore along the ITF pathways and divergence area in the coastal waters close to southern Sulawesi Island.  Model experiment with closing/opening Selayar Strait revealed a change of intensity and area of upwelling, suggesting that the Selayar Island forms a barrier for the outflow from MAK to northern part of Flores Sea. Keywords: Upwelling, ITF Makassar, SE monsoon winds, ROMS-AGRIF, Makassar Strait.
WATER QUALITY AND ITS EFFECT ON GROWTH AND SURVIVAL RATE OF LOBSTER REARED IN FLOATING NET CAGE IN EKAS BAY, WEST NUSA TENGGARA PROVINCE Junaidi, Muhammad; Hamzah, Mat Sardi
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 6 No. 2 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (310.531 KB) | DOI: 10.29244/jitkt.v6i2.9011

Abstract

ABSTRACT The development of lobster farming in floating net cage in Ekas Bay caused an environmental degradation such as decrease water quality due to some aquaculture wastes. The purposes of this study were to determine the status of water quality and their effect on growth and survival rate of lobster reared in floating net cages (FNC) in the Ekas Bay, West Nusa Tenggara Province. Water sample collection and handling referred to the APHA (1992). Analyses of water quality data were conducted using Principal Component Analysis. Determination of the water quality status of Ekas Bay was performed with STORET system. Multivariate analyses were used to determine the relationship between water quality, growth, and survival rate of lobster reared in FNC. Results showed that Ekas Bay water quality status was categorized in class C (medium contaminated), which exceeded some quality standard parameters such as ammonia (0.3 mg/l), nitrate (0.008 mg/l), and phosphate (0.015 mg/l). During lobster farming activities feeding with trash fish for 270 days, we obtained daily growth rate of  0.74% (lower than normal growth rate of 0.86%), survival rate of 66% (lower than normal survival rate of 86.7%), and feed conversion ratio of 11.15. Ammonia was found as a dominant factor reducing growth  and survival rate of lobster reared in FNC. Keywords: water quality, lobsters, growth, survival, Ekas Bay
CHARACTERISTICS OF LIPID BIOMARKERS (N-ALKANES, FATTY ACIDS, STEROLS, N-ALKANOLS AND ISOPRENOID) IN ESTUARINE SEDIMENTS OF MUARA ANGKE JAKARTA BAY AND CILINTANG-UJUNG KULON Nugraha, Mohammad Agung; Prartono, Tri; Sanusi, Harpasis Slamet
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 6 No. 2 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (411.535 KB) | DOI: 10.29244/jitkt.v6i2.9010

Abstract

ABSTRACT Lipid biomarkers as specific organic compounds can be used to evaluate the possible contribution of organic carbon from different sources or to trace the biological origin of molecules. The purpose of this research was to assess the contribution of sedimentary organic of origin based on the characteristics of lipid biomarkers in the Muara Angke Estuary-Jakarta Bay and Cilintang-Ujung Kulon.  Single sediment sample were collected at the 10 cm deep from the top sediment.  Those samples were extracted by soxhlet apparatus and fractioned prior to GC-MS analysis.  All of those sediment showed different characteristics of biomarker (n-alkanes, fatty acid, sterol,n-alkanols and isoprenoid). They indicated the different of contribution of organic material inputs influenced by the activity of the upland and surrounding the estuary. Keywords: estuary sediment, GC-MS, lipids biomarkers
COMMUNITY SOCIAL-ECOLOGY DYNAMICS ON MADAK CULTURE OF COASTAL REGION, WEST SUMBAWA Tania, A Lidya; Yulianda, Fredinan; Adrianto, Luky
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 6 No. 2 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (329.808 KB) | DOI: 10.29244/jitkt.v6i2.9009

Abstract

ABSTRACT Madak activity is a local word for the people of Sumbawa to collect marine biota  in tidal area during the low tide. The purpose of this study was to determine social change in communities of West Sumbawa for doing Madak culture. The study was conducted for 2 months in  ??West Sumbawa. Data were collected through observation, questionnaire, and interviewing the Madak people. It seemed that Madak culture changed totally, especially in daily actvities. In the past, they used  tools that were environmentally friendly.  However, during this study, they tended to damage coastal environment by flipping the reef. Keywords: Social, ecology, Madak culture, west Sumbawa
DISTRIBUTION OF HEAVY METALS IN NATUNA COASTAL WATERS Sagala, Sophia L; Bramawanto, Rikha; Kuswardani, Anastasia R.T.D; Pranowo, Widodo S
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 6 No. 2 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (848.025 KB) | DOI: 10.29244/jitkt.v6i2.9008

Abstract

ABSTRACTThe study of Pb, Cd, Cu, Hg, and As and Fe in Natuna coastal waters, Riau Islands was conducted in November 2012. Water and sediment samples were collected from 35 stations by purposive sampling method and those heavy metals were analysed using Atomic Absorption Spectrophotometer, flame type (FAAS). The results showed that concentrations of total Pb, Cd, Cu, Hg, and As in surface water were below instrument detection limit (2 µg/L for Pb, Cd, and Cu; 0.02 µg/L for Hg and As). Moreover, the concentration of metal Fe in surface water was 0.021-0.054 mg/L. Concentrations of Pb and Cu in sediment were 0.05-22.67 mg/kg and 3.77-11.00 mg/kg, respectively, at which the highest concentrations were found near Binjai Estuary. Those concentrations were significantly below the standard levels set by CCME (2002) and ANZECC/ARMCANZ (2000). Concentration of Fe in sediment varied from 751.13-2309.12 mg/kg and showed similar spatial distribution to Cu-in-sediment. No standard level for Fe in waters was available. Generally, it can be concluded that Natuna coastal water was still uncontaminated.  Keywords: heavy metals, iron metal, Natuna coastal waters.

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