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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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GROWTH RATE, COVER, AND SURVIVAL RATE (Enhalus acoroides) TRANSPLANTED IN MONOSPECIES AND MULTISPECIES Ilham Antariksa Tasabaramo; Mujizat Kawaroe; Rohani Ambo Rappe
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 7 No. 2 (2015): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

One of seagrass dominant species found in Indonesia is Enhalus acoroides. This species can form single seagrass bed vegetation (monospecies vegetation) and mixed with others species (multispecies vegetation). Seagrass composition in coastal areas can be affected by surrounding associated species such as herbivorous fish and invertebrates. Human activities, especially in coastal communities, can negatively influence seagrass beds. Therefore, it is needed an effort to rehabilitate the affected seagrass. Transplantation technic is one effort for rehabilitation. The purposes of the research were to analyze growth rate, percent cover, and survival rates of seagrass E. acoroides transplanted as monospecies and multispecies. This research used a monospecies of E. acoroides and multispecies (2, 4, and 5 species) that combined to others species such as T. hemprichii, C. rotundata, H. ovalis, H. uninervis, and S. isoetifolium. Research results showed that the highest average growth rate of transplanted E. acoroides was found in monospecies treatment with 0.29 cm/day. The highest average cover changing was found on two combined species i.e., E. acoroides and C. rotundata, as high as 0.10% per day. The highest survival rates were found in 2 combined treatment i.e., E. acoroides and H. ovalis, and 5 combined species such as E. acoroides, S. isoetifolium, C. rotundata, H. uninervis dan H. ovalis with value 100 percent, respectively. Keywords: Enhalus acoroides, cover, growth, survival rates, seagrass, transplantation

ACCURACY IMPROVEMENT ON SEA SURFACE HEIGHT ESTIMATION BASED ON WAVEFORM RETRACKING ANALYSES OF JASON-2 SATELLITE IN JAVA SEA Muhammad R. Hakim; Bisman Nababan; James P. Panjaitan
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 7 No. 2 (2015): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

A waveform created by the reflected signal from altimeter satellite in offshore is generally in ideal shape (Brown-waveform) and produces an accurate sea surface height (SSH) estimation. However, over coastal waters, the waveform shape becomes complex due to a disruption by reflected signal from land, resulting inaccurate SSH estimation. The objective of this research was to improve the accuracy of SSH estimation employing waveform retracking analyses of Jason-2 altimeter satellite data in the Java Sea during the years of 2012-2014. This study used data from the Sensor Geophysical Data Record type D (SGDR-D) from Jason-2 satellite (cycle 129 - 239) and global geoid undulation data of Earth Gravitational Model 2008 (EGM08). Waveform retracking analyses were conducted using several retracker methods. The performance of the all retrackers were examined using a world reference undulation geoid of EGM08. The results showed that the waveform retracking analyses were able to improve the accuracy of SSH estimation approximately 29.7% in the north coast and 56.4% in the south coast of total non-Brown-waveform in each region. Higher improvement percentage (IMP) of SSH estimation found in the southern coastal areas was due to a relatively smooth coastline formation in this region than in northern coastal region. There was no specific retracker that produce dominant IMP of SSH estimation. However, the threshold 10% retracker produced better SSH estimation than the other retrackers with dominant IMP values of 57.1% (pass 051), 48.1% (pass 064), and 25.7% (pass 127). OCOG retracker the worst retracker to estimate SSH in the Java Sea. Keywords: EGM08, waveform retracking, SSH, Jason-2, ocean retracker, threshold retracker

DEVELOPMENT OF DIGESTIVE ENZYMES ACTIVITY ON BLACK SADDLED CORAL GROUPER (Plectropomus laevis) LARVAE Bejo Slamet; Titiek Aslianti
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

ABSTRACTProtease, amylase, and lipase enzymes were used as biological indicators to measure larvae’s food digestion. The aim of this study was to describe digestive enzyme activity development of black saddled coral grouper (Plectropomus laevis) larvae. The just hatching larvae were reared in concrete tank 2x3x1 m3 with stocking density of 10 larvae/L. In the larval rearing media were added with Nanochloropsis oculata at 105 cel/ml started from 1 day old (D-1). The larvae was fed with rotifer (Brachionus rotundiformis) at 10-20 ind/ml started from D-2 and artificial diet from D-10. To analyze the protease, amylase, and lipase enzymes activities, samples were taken 0.5-1 g or about 1000 larvae on D-3, D-4, D-6, D-8 and 500 larvae on D-10, D-12, D-16, and D-20. The result showed that the protease, amylase, and lipase enzymes activity were positively correlated with the growth. Digestive enzymes activity was increased when larvae started on endogenous feeding (D-3), become down on D-6, stable on D-8 to D-10, increased on D-12, and reached the highest level on D-16. Digestive enzymes activity was higher when larvae started feeding with artificial diet compared to the larvae before feeding with artificial diet. Keywords: digestive enzymes, development, larvae, blacksaddled coral grouper

DISTRIBUTION AND BEHAVIOUR OF DISSOLVED AND PARTICULATE Pb AND Zn IN JENEBERANG ESTUARY, MAKASSAR . Najamuddin; Tri Prartono; Harpasis s. Sanusi; I Wayan Nurjaya
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

ABSTRACTDissolved and particulate heavy metals play a role in geochemical cycle as an agent in adsorption-desorption, deposition-resuspension, and dispersion mechanisms of heavy metals in water environment. The objectives of this research were to determine the distribution and behaviour of dissolved and particulate heavy metals Pb and Zn in different seasons (west and east seasons) at Jeneberang Estuary of Makassar. Concentrations of Pb and Zn were analysed using Atomic Adsorption Spectrophotometry based on APHA, AWWA, WEF (2005). The concentration of dissolved Pb in the riverine, estuarine, and marine waters were in the range (average) of <0.002 mg/L (below detectable limit), 0.013-0.144 mg/L (0.047 mg/L), 0.016-0.198 mg/L (0.079 mg/L); and the concen-tration of dissolved Zn were in the range (average) of <0.002 mg/L (below detectable limit), <0.002-0.014 mg/L (0.005 mg/L), <0.002-0.083 mg/L (0.017 mg/L). Meanwhile, the concentration of parti-culate Pb were in the range (average) of 1.807-2.569 mg kg-1 (2.215 mg kg-1), 0.521-1.272 mg kg-1 (0.911 mg kg-1), 0.465-2.182 mg kg-1 (1.033 mg kg-1), and the concentration of particulate Zn were in the range (average) of 19.151-90.942 mg kg-1 (51.710 mg kg-1), 16.999-63.059 mg kg-1 (31.694 mg kg-1), 19.439-80.283 mg kg-1 (45.554 mg kg-1) in the riverine, estuarine and marine waters, respecti-vely. Behaviour of dissolved heavy metals Pb and Zn showed that the concentrations tended to increase (desorption) along the gradient of high salinity as a result of the higher heavy metals input from coastal region than that riverine regimes.Keywords: distribution, behaviour, dissolved, particulate, heavy metal, Jeneberang Estuary

THE ABUNDANCE OF ORNAMENTAL CORALS AFTER MASS DIE OFF IN 1997 ON THE PADANG SHELF REEF SYSTEM, WEST SUMATERA, INDONESIA Ofri Johan; Anjang B. Prasetio; Idil Ardi; Amran R. Syam; Norman J. Quinn
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

ABSTRACTThe Indonesian Ministry of Marine Affairs and Fisheries aims to establish export quota ornamental corals based on scientifically-founded data from the natural environment. The purpose of this study was to determine the abundance of ornamental coral after mass die off in 1997. Ornamental corals were classified into three groups based on the guideline of ornamental coral propagation for trading purposes. Classification categories are rapid (3-6 months), middle (8-12 months), and slow growth rate (>24 months), which relates to their harvesting time when transplanted for the trade purpose. The survey method used line intercept transects to get coral condition data and belt transect with 2 m width to get ornamental coral data. Both line and belt transect have 30 m length and with three replicates. The study showed number of colony and abundance of ornamental coral for fast growth rate group such as Acropora sp (1348 col & 7.49 col/m2), Galaxea sp, Hydnophora exesa, H. microconus, Pocillopora damicornis, Stylopora sp and Montipora sp with the highest abundant found on Acropora sp and Montipora sp (1348 col & 7.49 col/m2). Whereas the coral which from middle growth rate were Leptoseris sp, Pavona sp, Platygyra sp, Favia sp, Favites sp with the highest abundant found on Favia sp (101 col & 0.56 col/m2). Coral species typically used for ornamental coral trade within the slow growth rate category such massive coral were not found on this survey. Due to the massive coral die-off in 1997 and the paucity of ornamental corals, the utilization of ornamental coral should be supported by coral transplantation and the broodstock of slow growth of coral taken from other area. Keywords: ornamental coral, abundant, mass die off, Padang Waters

REEF FISHES BIODIVERSITY IN MARINE SANCTUARY AT MINAHASA UTARA DISTRICT, NORTH SULAWESI Fakhrizal Setiawan; Sonny Tasidjawa; Efra Wantah; Hendri Johanis
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

ABSTRACTThere are some marine sanctuaries (DPL) which are managed together by its societies in North Minahasa regency. From 19 villages with DPL, we conducted surveys using point intercept transect in 14 villages both inside and outside DPL in the subdistrict West Likupang and East Likupang, North Minahasa. Result showed that live coral cover was in general in moderate to excellent conditions both inside and outside DPL. Reef fish recorded in the study areas consisted of 267 reef fish species which categorized into 40 families. Bahoi village had the highest abundance and biomass within the DPL due to a very good condition of coral reef ecosystemn (>75% coral cover) both inside and outside DPL. Biomass of reef fish outside DPL of Bahoi was small but its abundance was the highest. This conditions indicated that the size of reef fish outside of Bahoi DPL was small and this gave a positive perspective to supply fishes into the outside region of Bahoi DPL. Overall, marine sanctuary in North Minahasa contained reef fish community structure in good condition, moderate diversity, relatively labile of evenness index, and low dominance. Grouping by similarity, reef fish species were generally similar in all locations. The separation of DPL locations produced some different fishes group due to its different location, oceanographic conditions, and characters. Keywords: Marine sanctuary, reef fish community, North Minahasa.

COMMUNITY STRUCTURE OF GROUPER FISH (Serranidae) LANDED IN PEUKAN BADA SUBDISTRICT, ACEH PROVINCE Rika Astuti; . Yonvitner; M. Mukhlis Kamal
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

ABSTRACTInformation on important and economic grouper fish (Serranidae family) in Peukan Bada waters, Province of Aceh is very limited. This objecives of this research were to determine spatial and temporal variabilities in species composition and community structure of grouper landed in Peukan Bada, Aceh Besar District. The research was conducted using survey method during February to June 2015 on three fish landing sites i.e., Ujong Pancu, Lamtengoh, and Lamteh. The groupers were caught by using handline. The landed fishes were therefore counted and identified up to species level. The data were also analyzed based on taxonomic information and individual number of each species, community structure using the diversity index (H’), eveness (E), and dominance (D). The results obtained 835 individual, 21 species of grouper belong to 4 genera (Aethaloperca, Cephalopholis, Epinephelus dan Variola). Based on species, Epinephelus fasciatus and Cephalopholis sonnerati were the most grouper fishes in the region. Based on community structure, diversity value (H’) in Lam-tengoh was higher than that in Ujong Pancu and Lamteh. Total grouper fish catches were not significantly different (P>0,05) among the three region. Meanwhile, total grouper fish cacthes were significantly different between seasons (p<0,05). The diversity species variation during five months of observation was affected by the differences in catches area, the condition of aquatic enviroment, and oceanographic condition.Keywords: Groupers, Peukan Bada, species composition, community structure

BIOACCUMULATION OF ORGANOCHLORINES PESTICIDES (OCP) COMPOUND IN GREEN MUSSELLS (Perna viridis) IN JAKARTA BAY . Edward
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

ABSTRACTThe green mussel, Perna viridis can be used to determine bioaccumulation levels of organochlorine pesticides in a marine environment. Measurements on pesticide organochlorine concentration in green mussels (Perna viridis) were conducted in March and May 2013. The purpose of this research was to determine the bioaccumulation level of organochlorine pesticides in green mussels which were cultivated in Jakarta Bay. The samples were collected in Jakarta Bay in March and May 2013. The organochlorine pesticides concentration were measured by gas chromatography HP 5890 series II. The results showed that the average concentration of organochlorine pesticides in the small size of green mussells was 12.842 ppb, in the medium size was 27.065 ppb, and in the big size was 108.646 ppb. These concentrations were still lower than safety threshold limit value for seafood stated by EPA (Environment Protection Agency) i.e., 1,500 ppb. The comparation between organochlorine pesticide concentration in seawater and organochlorine pesticide in green mussels (bioaccumulation factor) were 2,140 for small green mussel, 4,510 for medium green mussel, and 18,107 for big green mussels, respectively.Keywords: bioaccumulation, green musselss, organochlorine pesticide, Jakarta Bay

DISTRIBUTION OF SEAGRASSES IN INNER AMBON BAY Andri Irawan; Noorsalam R. Nganro
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

ABSTRACTExcessive sedimentation in Inner Ambon Bay (IAB) is alleged to cause the degradation of seagrass ve-getation in the area. To get a clearer picture about the matter, we conducted a field study in October 2010 - January 2011 to describe the distribution and density of seagrass at several locations in IAB with different conditions of sedimentation levels. Data were collected using transects perpendicular to the coastline along the seagrass vegetation. The results showed that there were six species of seagrass which were spreaded unevenly. At the locations with high sedimentation, we found the formation of monospecies seagrass vegetation. Conversely, at the locations with low sedimentation, we found the formation of multispecies seagrass vegetation. The distribution and abundance of each species was related to the differences of seagrasses ability to grow in a certain environment and the compe-titiveness among them. Keywords: sedimentation, distribution, seagrass, Inner Ambon Bay

DAMAGE LEVEL AND CLAIMED VALUE ESTIMATION OF DAMAGE MANGROVE ECOSYSTEM IN BINTAN BAY, BINTAN DISTRICT Sigit Winarno; Hefni Effendi; Ario Damar
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

ABSTRACTMangrove ecosystem in some regions of the Bintan Bay has suffered damage due to development of human settlements, developing of land transport infrastructure, and also logging by the community. The aim of this study was to assess the level of damage, factors affecting the damage, and to calculate the estimated value of claims for damaged mangrove ecosystem in the Bintan Bay, Bintan District. The results showed that mangrove vegetation in Bintan Bay consists of 16 species. Based on the analysis of standard criteria and guidelines for mangrove destruction KEPMENLH 201, 2004, the quality of mangroves in Bintan Bay was considered in a good criteria (very dense and medium) and damaged criteria (rare). The observation of satellite images from 1990 to 2013 showed that mangrove area decreased by 501.39 hectares or 27.1%. Contributing factor due to the decrease of mangrove trees was to fuel the manufacture of charcoal, construction of infrastructures such as roads, ports of fishing boats and also the establishment of the fish pond. Based on rehabilitation application scenario for 15 years, the total area of compensated mangrove due to its damage was 1091.727 hectares with rehabilitation cost of about Rp 30.372.391.000,00. Meanwhile, for 30 years scenario rehabilitation, the total damage mangrove area that should be compensated was 1743.406 hectares. Keywords : Bintan Bay, mangrove ecosystem, estimated value damage claims

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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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Dietriech G. Bengen

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dieter@indo.net.id

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+62251-8627323

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dieter@indo.net.id

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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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