Garuda - Garba Rujukan Digital

All

Jurnal Ilmu dan Teknologi Kelautan Tropis

jurnalikt
Website

Published by Institut Pertanian Bogor

ISSN : 20879423 EISSN : 2620309X DOI : https://doi.org/10.29244/jitkt

Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Library & Information Science

Aims and Scope 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. Aims As an media of information and dissemination of research results in the field of marine science and technology, especially in the waters of Indonesia and Southeast Asia region, Could actively and continuously disseminate the best research results to various stakeholders, and; This Journal of Tropical Marine Science and Technology can improve the quality of research results and benefit stakeholders. Scope The article, published in this Journal of Tropical Marine Science and Technology covers a wide range of research topics in the field of: marine biology, marine ecology, biological oceanography, chemical oceanography, physical oceanography, dynamical oceanography, coral reef ecology, marine acoustic, marine remote sensing, marine geographical information system, marine microbiology, marine polution, marine aquaculture, post-harvest fisheries technology, integrated coastal management (ICM) marine biotechnology, air-sea interaction, ocean engineering,

Arjuna Subject : Umum - Umum

Articles 656 Documents

4 5 6 7 8

THE DISTRIBUTION OF TOXIC DINOFLAGELLATES ON SEA GRASS Enhalus acoroides AT PARI ISLAND, SERIBU ISLANDS Riani Widiarti; Fitrian Anggraini
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Benthic dinoflagellates causing Ciguatera Fish Poisoning (CFP), could be found attached either on macroalgae or sea grasses. Research on density and distribution of benthic dinoflagellates on sea grass leaves was conducted in Pari Island waters, Seribu Islands, in April 2012. Research was carried out by collecting Enhalus acoroides leaves from each site, and put inside the plastic jars containing seawater. In order to separate the dinoflagellates species from the leaves, the plastic jars were shaken vigorously and the seawater filtered through a series of sieves (125μm and 20μm). The resulted residue was than observed using Sedgewick rafter cell under light microscope. Based on samples collected, eight benthic dinoflagellates were found, where five of them were potentially toxic. They were Prorocentrum concavum, P. lima, P. rhathymum, Ostreopsis lenticularis, and O. siamensis. The highest abundance was found in the reef flat on the southern side of the island (652 sel/cm2 seagrass leaf). Research showed that the density and distribution of toxic dinoflagellates on sea grass at Pari Island, Seribu Islands were more influenced by local water currents.Keywords: benthic dinoflagellates, Ciguatera Fish Poisoning, Pari Island, seagrass

FOULING ORGANISMS ASSOCIATED WITH MANGROVE IN AMBON INNER BAY Yosmina Tapilatu; Daniel Pelasula
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Limited literatures exist on fouling organisms attached to mangrove in Ambon Inner Bay (AIB). The purpose of this research is to obtain updated information on fouling organism in this ecosystem. Samplings were carried out in two periods, representing first transition period and west monsoons, at two different locations in AIB (Poka and Kate-kate). Methods used were direct observation and descriptive exploration during sampling. Fouling organisms and mangrove type were identified using identification books. The results obtained indicate that predominant organisms belonged to mollusks and crustacea. Four gastropod species (Littorina scabra, Nerita oualaniens, Terebralia sulcata, Cassidula nucleus) and one bivalve (Saccostrea cucullata) were identified. Clibanarius ambonensis and Cardisoma carnifex were the species identified from crustacea group. Type of mangrove found, either naturally or through replanting program in Poka were Rhizophora apiculata, R. stylosa and Sonneratia alba. There were four different species found in Kate-kate (S. alba, R. apiculata, Ceriops tagal and Aegiceras corniculatum).Keywords: fouling organisms, mangrove ecosystem, Ambon Inner Bay

SPATIAL ANALYSIS OF SHORELINE CHANGES IN THE COASTAL OF SUBANG DISTRICT, WEST JAVA Ankiq Taofiqurohman; M. Furqon Azis Ismail
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

ABSTRACT Observation of coastal shoreline changes in the Subang District was conducted using Digital Shoreline Analysis System Program based on the satelite images of Landsat TM from 1996 to 2010. The purpose of this study was to determine the distance of shoreline change. Methods used in this study were field survey and regression analysis of shoreline data. The results of this study indicated the existence of a region experiencing accretion and abrasion. The maximum width of accretion of the coast was 1,051.55 meter while the maximum abration was 1,206.83 meter. Coastal shoreline change in Subang District occurred mainly due to the development activities such as residential construction, altering the coastal mangrove to ponds and rice paddies, and sediment transport from the river around Subang District. Keywords: shoreline, Subang District, satelite images, accretion, abration

SEA WATER QUALITY OBSERVED FROM NUTRIENT ASPECT, DISSOLVED OXYGEN AND PH IN THE BANGGAI WATERS, CENTRAL SULAWESI Marojahan Simanjuntak
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Banggai Waters, Central Sulawesi is very important because the waters is very rich in marine resources and its oceanographic conditions are affected by land and Banda Sea. This research was conducted in June-July 2011 using a research vessel Baruna Jaya VIII. The research objective was to determine water quality based on as an indicator of fertility waters and factors influencing the water quality. The parameters studied were phosphate, nitrate, silicate, dissolved oxygen, and acidity (pH). Water samples were collected using Niskin Bottle attached with CTD form three different depths i.e., surface (0-1 m), middle (20-100 m), and near bottom layer (100-200 m) at 14 stations. Concentrations of phosphate, nitrate, and silicate were analyzed according to the method of Strickland and Parsons. Dissolved oxygen concentrations were measured by Winkler method. The degree of acidity (pH) was measured with pH meter Cyber Scan 300. The results indicated that nutrient concentrations were generally higher in eastern and southern waters. Phosphate concentrations ranged from 0,04–1.70 µg A/l; nitrate 0.28–27.23 µg A/l, and silicate 1.96–46.56 µg A/l. Dissolved oxygen concentrations ranged from 2.14–4.15 ml/l, and pH values from 7.95–8.26. In reference to the quality standards set by the Ministry of Environment (KMNLH), the Banggai Waters, Central Sulawesi is still in good conditions for the life of various biota.. Keywords: water quality, fertility waters, nutrients, Banggai Waters

NUTRIENT PHOSPHATE, NITRATE AND SILICATE DISTRIBUTION OF NATUNA ARCHIPELAGO WATERS Muswerry Muchtar
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Research on phosphate, nitrate and silicate distributions of Natuna ArchipelagoWaters was conducted using RV Baruna Jaya VIII in April 2011. Concentration of phosphate, nitrate and silicate were analyses by Spectrophotometry. The purpose of the study was to assess the distribution of nutrients as fertility indicator of marine life. The results showed that the phosphate concentration at surface layer of Subi, Bunguran, and Laut islands ranged from 0,04 to 0,22 µg A/l, 0,04 to 0,18 µg A/l and from 0,04 to 0,13 µg A/l, with average 0,11 µgA/l, 0,08 µgA/l and 0,07 µg A/l, respectivelly. Concentration of nitrate ranged from 0,31 to 4,90 µg A/l, 0,23 to 2,29 µg A/l and from 0,14 to 0,32 µg A/l with average of 90 µgA/l, 0,78 µg A/l and 0,22 µg A/l, respectivelly. Silicate concentration ranged from 2,97 to 5,35 µg A/l, 2,28 to 4,85 µg A/l and from 2,28 to 3,57 µg A/l with average 4,49 µgA/l, 3,62 µg A/l and 3,02 µg A/l,respectivelly. While phosphate concentration at bottom layer of Subi, Bunguran and Laut islands ranged from 0,04-0,27 µg A/l, 0,04-0,31 µg A/l and 0,09-0,22µg A/l,, with average 0,13 µgA/l, 0,13 µgA/l dan 0,12, µg A/l respectivelly. Concentration of nitrate ranged from 2,59-5,61µg A/l, 0,73-4,75 µg A/l and 2,06-3,03 µg A/l with average 2,85 µgA/l, 3,14 µg A/l and 2,49 µg A/ respectivelly. Silicate concentration in Subi, Bunguran and Laut Islands ranged from 4,46-6,21 µg A/l, 3,20-5,84 µg A/l dan 3,07-4,66 µg A/l with average 5,323,73 µgA/l, 4,74 µg A/l dan 3,73 µg A/l. In general concentration of those nutrient of Natuna Archipelago waters was still within the Standard Quality set by the Ministery of Environment (KMNLH). Keywords: nutrient, phosphate, nitrate, silicate, Natuna Archipelago waters.

PREDICTION OF SEDIMENT TRANSPORT DUE TO IRREGULAR WAVE MOTION Taufiqur Rachman; Suntoyo Suntoyo
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

In general, waves in coastal environments are irregular and have a random shape with a height and period that was not constant. The accuracy of sediment transport rate prediction is the most important stages in the study of morphology and coastal marine environments. In addition, the predictive model of coastal morphology is more efficient to use the bottom shear stress calculation approach for practical purposes rather than a more complex approach to the modeling of two phases. In this paper, the calculation of sediment transport was based on the bottom shear stress modelling purposed with data validation from the experimental results in the turbulent bottom boundary layer over rough bed under irregular waves. The new approach to estimate the bottom shear stress was based on combining velocity and acceleration terms. Furthermore, a new approach of the bottom shear stress was applied to formulate the sheet flow sediment transport rate for irregular waves by using the experimental data from Dibadjnia and Watanabe (1998) and the empirical formula was found. Keywords: sediment transport, bottom shear stress, irregular waves

WATER CONDITIONS OF CORAL REEFS WITH FORAMINIFERA BENTHIC AS BIOINDICATOR BASED FORAM INDEX IN BANGGAI ISLANDS, PROVINCE OF CENTRAL SULAWESI Khairunisa N. Aulia; Hikmat Kasmara; Tatang S. Erawan; Suhartati M. Natsir
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Research of water condition of coral reefs with foraminifera benthic as bioindicator based on FORAM Index (FI) in Banggai Islands, Province of Central Sulawesi was conducted by P2O-LIPI, Jakarta team in July 2011. This study was an exploratory research, conducted using survey methods. Sediment sampling was collected by a Van Veen Grab and measurement of other biotic and abiotic parameters was performed in 8 point sampling stations scattered in Banggai islands. Sediment samples were analyzed qualitatively and quantitatively to identify the types of foraminifera, determines FORAM Index, and find out the relationship between FORAM Index with condition of coral reefs views by coral cover. The results showed that foraminifera benthonic as bioindicator were 75 species, which belong to 33 genera. Water conditions of Banggai Islands by FORAM Index (FI) values ranged from 2.99 to 5.54. There was a fairly close relationship between FI with condition of coral reefs views by percentage coral cover in Banggai Islands. Keywords : coral reefs, FORAM Index, foraminifera benthic, Banggai Islands

ECOTOURISM DEVELOPMENT IN TANJUNG BALAI DISTRICT, NORTH SUMATERA: MANGROVE FOREST ECOLOGICAL FACTORS Fahriansyah Fahriansyah; Dessy Yoswaty
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

District of Tanjungbalai characterized by mangrove ecosystem with mud and sandy beaches has the potential to be developed for marine ecotourism. One way to maintain the existence of mangrove forests from destruction or extinction is to develop the Tanjungbalai district to be an ecotourism area. The research objective was to determine the potential ecological mangrove forest to be developed as an ecotourism area. The study was conducted in August-November 2011, using survey methods. Primary data were obtained through direct observation in the village of Bagan Asahan, Asahan Mati and Sungai Apung on mangrove community structure (density value) and ecological potential. Data analyses for suitability tourism index were based on Yulianda (2007). The results showed that the mangrove forest in the Tanjungbalai District had a good density in the category of very dense (the value of 1778 ind./Ha), mainly consisting of Bruguiera gymnorrhiza, Xylocarpus granatum, Rhizophora mucronata and Rhizophora apiculata. Suitability tourism index in the Tanjungbalai District was very suitable (S1) for mangrove tourism development including Village of Bagan Asahan (score 65, IKW 85.53%), Asahan Mati (score 61, IKW 80.26%) and Asahan Apung (score of 61, IKW 80.26%). Ecologically, mangrove forests in the district of Tanjungbalai is potential to serve as a mangrove ecotourism area. Keywords: mangrove forest, potential ecological, ecotourism development

IDENTIFICATION OF SECONDARY METABOLITES COMPOUNDS, ANTIBACTERIAL AND ANTIOXIDANT ACTIVITIES ON THE METHANOL EXTRACT OF SEA CUCUMBER Stichopus hermanii Abdullah Rasyid
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Identification of secondary metabolites, antibacterial and antioxidant activities assay of methanol extract of sea cucumber Stichopus hermanii were conducted from May to July 2011 at the Natural Products Laboratory, Research Center for Oceanography, Indonesian Institute of Sciences. Sea cucumber used in this study comes from South Lampung waters. Objective of the study was to get information of secondary metabolites, antibacterial and antioxidant activities of methanol extract of sea cucumber S. hermanii. The extraction method which used in this experiment was the maceration method using methanol solvent. Identification of secondary metabolites was performed through observing reaction of colors, precipitation, and foaming. Antibacterial and antioxidant activities of methanol extract from sea cucumber were tested using agar diffusion method and reducing of free radicals 1.1-Diphenyl-2-Picrylhydrazyl (DPPH) respectively. The results showed that secondary metabolites identified in the methanol extract of sea cucumber S. hermanii were saponin and steroids. Both secondary metabolites had antibacterial activities against Staphylococcus aureus, Vibrio eltor and Bacilus subtilis. The analysis of antioxidant activity showed that the IC50 value of methanol extract of sea cucumber S. hermanii was about 65.08 ppm. It indicated that S. hermanii is having potency as antibacterial and antioxidant. Keywords: antibacterial, antioxidants, sea cucumber Stichopus hermanii, secondary metabolites

INDONESIAN THROUGHFLOW TRANSPORT VARIATIONS AND OCEANOGRAPHIC’S PARAMETER IN TIMOR SEAS AS AN INDICATION OF ENSO EVENTS M. Safitri; S. Y. Cahyarini; M. R. Putri
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Variation of Indonesian Throughflow transport, salinity, and temperature at surface level of Timor Seas monthly, seasonal, and annual mean scale was studied using the datasets provided by IRI/LDEO Climate Data Library i.e Simple Ocean Data Assimilation (SODA) for the salinity. The period data used in this study was 1995-2004, ERSST for the temperature. The Indonesian Thourghflow transport was obtained from Hautala et al. (2001). Result of this study showed there was influence of monsoon and ENSO on oceanographic parameters. During the South East (SE) monsoon, an emptiness on the surface water occurred in Timor Seas due to the easterly wind, which causes the upwelling. The results was also shown that during the SE monsoon the average temperature was 26.84oC, salinity was 34.35, and Indonesian Throughflow transpor was -0.34 Sv. While during the North Western (NW) monsoon the average temperature was 29.6 oC, salinity was 34.22, and the Indonesian Throughflow transport was -0.27 Sv. The negative value (-) means that the flow toward the Indian Ocean. In addition, based on temporal correlation between Indonesian Throughflow transport and NINO 3.4 index was found that the annual mean variability increases (-0.18 Sv) during La Niña period and decreased (-0.13 Sv) during period El Niño. These indicated that ENSO phenomena influenced the transport across the Equatorial Pacific east-west. Keywords: Indonesian throughflow, salinity, temperature, SODA, Monsoon, ENSO, Timor Seas.

Page 6 of 66 | Total Record : 656

4 5 6 7 8

Filter by Year

2009 2025

Filter By Issues

All Issue Vol. 17 No. 2 (2025): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 17 No. 1 (2025): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 16 No. 3 (2024): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 16 No. 2 (2024): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 16 No. 1 (2024): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 15 No. 3 (2023): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 15 No. 2 (2023): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 15 No. 1 (2023): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 14 No. 3 (2022): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 14 No. 2 (2022): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 14 No. 1 (2022): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 13 No. 3 (2021): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 13 No. 2 (2021): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 13 No. 1 (2021): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 12 No. 3 (2020): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 12 No. 2 (2020): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 12 No. 1 (2020): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 3 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 2 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 1 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 10 No. 3 (2018): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 10 No. 2 (2018): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 10 No. 1 (2018): Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 9 No. 2 (2017): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 9 No. 1 (2017): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 8 No. 2 (2016): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 8 No. 1 (2016): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 7 No. 2 (2015): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 7 No. 1 (2015): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 6 No. 2 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 6 No. 1 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 3 No. 2 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 3 No. 1 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 2 No. 2 (2010): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 2 No. 1 (2010): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 1 No. 2 (2009): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 1 No. 1 (2009): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
Dietriech G. Bengen

Contact Email
dieter@indo.net.id

Phone
+62251-8627323

Journal Mail Official
dieter@indo.net.id

Editorial Address
Departement of Marine Science and Technology Faculty of fisheries and marine science, IPB University Jln. Lingkar Akademik, Kampus IPB Darmaga, Bogor 16680, Indonesia

Location
Kota bogor,

Jawa barat

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Dietriech G. Bengen

Contact Email dieter@indo.net.id

Phone +62251-8627323

Journal Mail Official dieter@indo.net.id

Editorial Address Departement of Marine Science and Technology Faculty of fisheries and marine science, IPB University Jln. Lingkar Akademik, Kampus IPB Darmaga, Bogor 16680, Indonesia

Location Kota bogor, Jawa barat INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Dietriech G. Bengen

Contact Email
dieter@indo.net.id

Phone
+62251-8627323

Journal Mail Official
dieter@indo.net.id

Editorial Address
Departement of Marine Science and Technology Faculty of fisheries and marine science, IPB University Jln. Lingkar Akademik, Kampus IPB Darmaga, Bogor 16680, Indonesia

Location
Kota bogor,

Jawa barat

INDONESIA