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Jurnal Ilmu dan Teknologi Kelautan Tropis

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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

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A CONCEPTUAL MODEL ANALYSIS OF SST INFLUENCE ON MARINE BIOTA IN THE SOUTH JAVA SEA Albert Sulaiman; Nani Hendiarti
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

We developed a conceptual coupled atmosphere-ocean-ecosystem model for the South Java seas to investigate interaction between marine biota and SST variability due to monsoon-forced. Ocean and atmosphere are represented by a box model for one dimensional water column. The equation of motions of the zonal wind stress and SST are represented in term of nonlinear oscillator model. Marine biota are represented by three components (nutrient, phytoplankton and zooplankton) of NPZ Edward-Brindley model. The marine ocean-atmosphere coupling mechanism is done through the absorption of blue light by phytoplankton. The system of nonlinear dynamical equation is solved by using Matlab ODE solvers. Monthly SST data is used to compare the model. Result showed that the period and amplitude of oscillation of SST and ecosystem component strongly depend on the parameter choice which describes the dynamical characteristic of the system. The SST and ecosystem variability will strongly correlate with monsoonal wind if we choose the parameter of light attenuation by water 0.2 m-1. Strong seasonal variations associated with monsoonal winds were observed for SST, phytoplankton and zooplankton concentration. On the other hand, the nutrient concentration shows a weak seasonal variationKeywords: SST, NPZ, monsoon, delayed oscillator

POTENTIAL ROLES OF BIOTIC FACTORS IN REGULATING ZOOPLANKTON COMMUNITY DYNAMICS IN JAKARTA BAY SHALLOW WATER COASTAL ECOSYSTEM Arief Rachman; Nurul Fitriya
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

The dynamics in zooplankton abundance were regulated by changes in water physical-chemical parameters and interaction with biotic factors. In this research we examined the relationship between zooplankton community dynamic and important biotic factors, such as predation and food availability, in Jakarta bay. Plankton samplings were done in 10 sampling stations in Jakarta bay, from July to November 2009. Zooplankton samples were collected using horizontal towing method with NORPAC plankton net (mesh size 300 μm). Salinity, water depth, water temperature, and water transparency were measured. Phytoplankton samples were also collected with the same method as zooplankton, using Kitahara plankton net (mesh size 80 μm). Zooplankton taxas were grouped into two groups, the prey and predatory zooplankton. The results showed that there were two different patterns in zooplankton groups dynamic i.e., the single and double peak. The abundance peak in most zooplankton groups, such as copepods, cirripeds, luciferids, and tunicates, were induced by the high food availability during the phytoplankton bloom in August. The high abundance of prey zooplankton groups in August was responded by the predatory zooplankton groups, resulting in high abundance of predatory zooplankton in adjacent month. The high abundance of ctenophores and chordates (fish larvae) were suggested as the main factor for the low abundance of other zooplankton in September. Physical and chemical factors were not the regulating factors due to the stability of those factors during this research period. Thus we concluded that food availability and predator-prey interaction were the main factors which regulate zooplankton community dynamics in Jakarta bay.Keywords: predator-prey interaction, zooplankton, abundance peak, food availability, phytoplankton bloom

CONDITIONS OF MARITIME METEOROLOGY AND OCEANOGRAPHY IN THE VICINITY OF KOTOK ISLAND, SERIBU ISLANDS: APRIL 2011 Atika Lubis; Mira Yosi
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Meteorological data measurement by an Automatic Weather Station (AWS) were carried out at the pier of Kotok Island for East Monsoon period on April 2011 to obtain the changes phenomenon of maritime meteorological parameter and their correlation with the changes of oceanographic condition in shallow waters area and its surrounding. The measurement consists of surface wind parameter, air temperature, humidity, air pressure, and oceanographic data observations such as batimetry, tide, sea current, sea surface temperature, and salinity distributions. Result of maritime meteorological assessment obtained from previous reports (1980, 1998, and 2001) showed that the changes of the maximum air temperature were relatively significant. Furthermore, the air pressure data at the sea surface increased approximately 1.3 mBar. Nevertheless, other meteorological data seemed to be less significant in changes, but indicated a strong correlation with the pattern of tidal current and propagated waves to the shoreline. The changes of oceanographic parameter in the shallow water area were triggered the sedimentation processes, so that the coral reef growth might be decreased.Keywords: Maritime meteorology, oceanographic parameter, flat coral reef

THE COMPOSITION OF SPECIES AND STRUCTURE OF SEAGRASS FISH COMMUNITY IN TANJUNG TIRAM – INNER AMBON BAY Husain Latuconsina; M. Natsir Nessa; Rohani Ambo Rappe
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

The study was conducted in March - May 2011 in the coastal waters of Tanjung Tiram – inner Ambon bay. The aims of the study were to determine the composition of species and structure of fish communities in seagrass beds ecosystems. Fish were collected every spring and neap tide for three month periode with a swept area method using beach seine. Fishes were collected as many as 6444 individuals representing 68 species from 29 families. Siganus canaliculatus was contributed up to 62.91% of the total individual fish found.The fish community structure was varied between spring and neap tide. Index of dominance was in low category, diversity in medium, and evenness in unstable conditions. Moreover, the results indicated that seagrass ecosystems in Tanjung Tiram (TAD) have an important role as spawning, nursery ground, and feeding ground. Therefore, management and conservation efforts are urgently needed to maintain the ecological role of seagrass ecosystems for the sustainability of the fish resources.Keywords: Seagrass beds, fish community, tanjung tiram, inner Ambon Bay

MEIOFAUNA (FORAMINIFERA) IN SEDIMENTS AND ITS RELATION TO WHITE SANDY BEACH OF SENGGIGI AND WATER CONDITION OFF WEST LOMBOK Kresna T. Dewi; L. Arifin; A. Yuningsih; Y. Permanawati
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

A development of meiofaunal data (foraminifera) from offshore area of West Lombok was conducted on 20 marine sediment samples. The samples were taken out using a grab sampler in 1997. The purpose of this study was to apply the formula of Foraminiferal Index by Hallock et al. (2003). Another purpose of this study was to recognize its relation of white sands of Senggigi beach that was dominated by Shlumbergerella floresiana. The result of analysis showed that the value of Foraminiferal Index (FI) was varies between 1.22 and 9.81. The low value of FI (<2) was found at sites that were close to the coastal area. The values FI >2 and <4 occur at five stations that gave indication of limited environment for coral growth. Value of FI >4 that showed good water condition was found in an area surrounding small islands of Gili Trawangan, Gili Meno, Gili Air and southern part of the study area. Based on the identification of foraminiferal specimens, the occurrence of Shlumbergerella floresiana was not abundant as it was accumulated in Senggigi beach. This result showed that this species did not come from samples studied but might come from marine sediment adjacent to the Senggigi beachKeywords: Benthic foraminifera, FORAM Index, west Lombok

EFFECT ON DIETARY PROTEIN AND FEEDING RATE ON GROWTH OF TIGER GROUPER (Epinephelus fuscoguttatus) JUVENILE Muhammad Marzuqi; Ni Wayan Widya Astuti; Ketut Suwirya
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

The grouper fish culture was developed after its succesful seed production in hatchery well known. In grow-out culture grouper, the protein requirement and feeding rate have to know well in order to understand the effectiveness on feed utilization . The experiment was designed by factorial design with the first factor as 3 dietary protein (36%, 42%, 48%) and the second factor as 3 feeding rate ( 1,5%, 2,0%, 2,5%). Ten of juvenile tiger grouper (102, 51-102, 73 g of body weight) were stocked in 27 polycarbonate tanks with 400 l volume each. Each tank was equiped with aeration and flow-through water system. Fish was fed three time per day i.e. 08:00, 11:30 and 15:30 Central Indonesia Standard Time for 16 weeks. Every week was measured body weight, survival rate, and feed quantity. The parameter used in this experiment were weight gain, spesific growth rate, feed efficiency and survival rate. The results of the experiment showed that the combination of protein level (36%, 42%, 48%) with feed ratio (1.5%, 2.0%, 2.5%) gave response on growth, weight gain and survival rate. Combination dietary protein level of 48% and feed ratio 1.5% gave higher weight gain and survival rate with values of 104.05 ± 5.89% and 96.67 ± 5.57 %, respectively.Keywords: Dietary protein and feeding rate , growth, tiger grouper (Epinephelus fuscoguttatus)

INFLUENCES OF UPWELLING DURATION AND INTENSITY BASED ON SEA SURFACE TEMPERATURE ANOMALY TOWARD PRIMARY PRODUCTIVITY VARIABILITY IN INDONESIAN WATERS Putri Kemili; Mutiara R. Putri
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

The existence of upwelling generally increases waters productivity. However, the influence of upwelling could be different based on location and time. The difference of upwelling duration and intensity (strength) can affect the variability of primary productivity in Indonesian waters. The estimation of primary productivity during the period of January 2000 to December 2007 was conducted using Carbon-based Production Model (CbPM). Sea Surface Temperatures (SST) Anomaly data on the same period was used as parameter to determine the upwelling conditions. The study locations were west coast of Sumatra, south waters of East Java to East Nusa Tenggara, Banda Sea, Gulf of Bone, Maluku Sea and Halmahera Sea. The results showed that in the south of East Java and Banda Sea have upwelling with longer duration (3–4 months) and higher intensity (decrease in temperature reached >2°C below average), the primary productivity was higher than other locations. Halmahera Sea showed the existence of upwelling only at certain time when El Niño occurred, while Gulf of Bone and Maluku Sea showed the occurrence of upwelling during southeast season only with 2–3 months of duration and vary intensity, which shown with the decrease in temperature ranging from 0,5–1,8oC below average. El-Niño and dipole mode in Indonesia waters generally caused longer duration and stronger intensity of upwelling producing more productivity than normal years.Keywords: Upwelling, Primary Productivity, Carbon-based Production Model

CULTURE OF EMPEROR SNAPPER Lutjanus sebae Regina Melianawati; Restiana Wisnu Aryati
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Emperor snapper Lutjanus sebae is one of marine fishery commodities with high economic value, therefore capture rate of this fish is very high. To maintain its sustainability in nature, the culture of this species should be done in proper manner to support their conservation. This study was aimed to determine the culture technology of emperor snapper L. sebae. The eggs for this study was taken from wild broodstocks that have been domesticated in concrete rearing tank. Larval rearing was done in 500 liter polyethylene tank placed in hatchery. Phytoplankton Nannochloropsis oculata was used during larval rearing period. Larvae was fed with zooplanktons such as rotifer Brachionus rotundiformis and copepod Tisbe holothuriae in the beginning of rearing and artemia starting in day 16. Observed parameters were absorption of endogenous energy, preferrence of food, larval growth and survival rate. The result indicated that total length of newly hatched larvae were 2,44-2,63 mm, while yolk sac and oil globule were 179x10-3 - 183 x10-3 mm3 and 0,66x10-3 - 0,67x10-3 mm3, respectively. Yolk sac was absorbed at 60 hours after hatching, while oil globule almost totally absorbed at 80 hours after hatching. Live food rotifers were dominantly preferred by larvae until 10 days old, while copepods and artemia were preferred after 12 and 16 days. Larval rearing period was 22-29 days at water temperature 28.5-30.0°C. Survival rate of larvae were between 1.5 until 2.1%, while juveniles were 84.00-100.00%.Keywords: Emperor snapper, L. sebae, culture technology

REPRODUCTION ASPECTS OF THE YELLOWFIN TUNA (Thunnus albacares) Retno Andamari; Jhon Haryanto Hutapea; Budi Iskandar Prisantoso
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Tuna is one of the important fishery commodities in Indonesia, including tuna caught by longliners in Indian Ocean. The most popular of tuna is yellowfin tuna (Thunnus albacares). Currently, the production of tuna based on the capture fisheries, therefore, in order to preserve its sustainability, the understanding of the biological and reproduction aspect is required. Research on the biological reproduction of this species was conducted at Gondol Research Institute for Mariculture. Samples of female gonad were collected from Indian Ocean tuna longliners during April to July 2009 from the processing companies within Benoa Port. Result of the histological analysis on 128 female gonads showed that majority of gonads were at the early development level and the only 16 gonads have reached at the mature level. The analysis of the oocyte development showed the asynchronous, indicating that yellowfin tuna is a multiple spawner.Keywords: yellowfin tuna, gonad, asynchronous

ABUNDANCE OF DIATOM AT THE GUMILAMO AND MAGALIHO ISLAND, NORTH HALMAHERA Rina Puji Astuti; Philip Teguh Imanto; Gede S. Sumiarsa
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Observation on abundance of diatom has been conducted in Gumilamo-Magaliho waters, North Halmahera. The aims of this study were to identify and analyze daily fluctuations of diatom abundance also analyze the biological indices in the plankton in that waters and . Sampling was conducted at three stations representing the strait, mangrove areas and estuary. Plankton were collected using a plankton net no.25. Sampling was carried out for 24 hours with six hour interval. Identification and counting of cells using a microscope with 400x magnification. The results showed that seven genera of diatoms were found: Chaetoceros sp. with the highest of cells abundance (5.061 cells/L), successively followed by Nitzschia sp. (611 cells/L), Thalassionema sp. (569 cells/L), Skeletonema sp. (446 cells/L), Coscinodiscus sp. (176 cells/L), Navicula sp. (40 cells/L) and Amphora sp. (11 cells/L). At station I and II showed that the maximum abundance occurred at 6 am, and the minimum abundance occurred at 6 pm. At station III the maximum abundance occurred at midnight and a minimum abundance occurred at noon. Diatoms showed different daily fluctuations at different time and stations. The supporting diversity index value of medium, low uniformity, and no dominance factor causing the Gumilamo-Magaliho waters can be developed for aquaculture.Keywords: diatom, diatom abundance

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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

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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