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INDONESIA
JOURNAL OF COASTAL DEVELOPMENT
Published by Universitas Diponegoro
ISSN : 14105217     EISSN : -     DOI : -
Core Subject : Education,
Education
The Journal of Coastal Development (ISSN 1410-5217) is dedicated to all aspects of the increasingly important fields of coastal and marine development, including but not limited to biological, chemical, cultural, economic, social, medical, and physical development. The journal is jointly published by the Research Institute of Diponegoro University, Semarang, Indonesia and Indonesian Assosiation of Oceanologist (ISOI).
Arjuna Subject : -
Articles 328 Documents
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THE ECONOMICS OF VIOLATION BEHAVIOUR OF FISHERS IN INDONESIA, MALAYSIA AND THE PHILLIPPINES*) Indah Susilowati
JOURNAL OF COASTAL DEVELOPMENT Vol 3, No 1 (1999): Volume 3 Number 1 Year 1999
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Abstract

This paper examines the behavior of the fishers violating a zoning regulation under a condition of limited enforcement in the fisheries of Indonesia, Malaysia, and the Philippines. Rational utility theory is used as a framework for explaining compliance behavior. Samples of 304 violators from the study area were used in the analysis. Tobit model is employed in the analysis. The results indicate that economic, morality and social influence factors determine the overall violation decision of individual violators fishing in the prohibited area. In the general the findings of the study were consistent with the theoretical model of compliance behavior tested by previous researchers. Enforcement is costly thus to improve fishers’ compliance in the study area there is a need to used other determinants of compliance as such as morality and social influence factors. Fisheries management authorities should also explore alternative approaches for managing fisheries such as participatory or community-based management approaches. Such approaches may incur lower monitoring and enforcement costs. rateB� R J��EER. The best absolute growth (292,05g), daily growth rate (1,34%/day), FCR (2,31), PER (1,68) and NPU (8,37), were achieved by treatment B, followed by C and A. meanwhile, the best SR was achieved by treatment C and followed A, and B.  Therefore, treatment B appeared to be the best fish feed formulation for Red tilapia production.
PHYSICOCHEMICAL PROPERTIES OF SOME DRIED FISH PRODUCTS IN INDONESIA Tri Winarni Agustini; Y. S. Darmanto; Eko Susanto
JOURNAL OF COASTAL DEVELOPMENT Vol 12, No 2 (2009): Volume 12, Number 2, Year 2009
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Abstract

Some traditional fish products in Indonesia have potential opportunity for global market, such as fish crackers, dried fish, ikan kayu (‘katsuobushi’) and dried pempek (traditional fish product from Palembang). Study on such products based on its glass transition temperature is still rare. On the other hand, glass transition phases of dried product play an important role in determining food stability because it can give an overview of physicochemical properties of the products. Using its glass transition temperature, dried fish product can be estimated for its shelf life. The purposes of this research are to observe the relation between some physicochemical properties of glass transition temperature of some dried fish products and its water content/water activity to the self life of the products. Dried fish products used were: fish cracker, dried-salted fish, ikan kayu (katsuobushi), fufu (very dried-smoked fish) and dried pempek. The samples were taken from different area in Indonesia (Cilacap, Palembang, and Sulawesi). The sample were taken using purposive sampling method. The method used for analysis of glass transition temperature was DSC method (Differential Scanning Calorimetry), and for water content and water activity were analysed using Aw meter and Moisture analyzer. All samples were analyzed in duplo. Research method used was experimental laboratory with research design of Completely Randomised Design. The experiment was conducted from August 2008 to December 2008 at Fish Product Processing Laboratory, Fisheries Department, Faculty of Fisheries and Marine Science – Diponegoro University, Food Engineering Laboratory – SQU, Oman. The results showed that different sample with different characteristics on physicochemical properties give different in water activity and also water content. The lowest water activity was performed by dried pempek. Glass transition temperature (Tg) of the products was very depend on the water content. The Tg of samples was ranged between 38.4oC – 76.4oC. The water content of the products ranged between 8.28%-37.28%. The Aw of the product was ranged between 0.57 – 0.87.
THE APPLICATION OF GLYROXYL AS DECONTAMINATION AND DISINFECTION AGENT FOR THE PRESERVATION OF FISHERIES PRODUCT Y.S. Darmanto; Tri Winarni Agustini
JOURNAL OF COASTAL DEVELOPMENT Vol 5, No 3 (2002): Volume 5, Number 3, Year 2002
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Abstract

Fisheries products are regarded as  perishable food. Fresh prawn is one of the most valuable fisheries products and its demand increases especially in developed countries. Handling and preserving of fresh prawn has been investigated to keep the quality. Glyroxyl has been successfully used as decontamination agent in the fish sector in the Netherlands. Apart from its use as decontamination agent, glyroxyl has been proved to be an efficient disinfectant. Due to its safe character, it is allowed to put glyroxyl in foodstuff directly, provided that the prescribed concentration is respected. This study is aimed to investigate the effect of different concentration of glyroxyl (0, 0.3 and 0.5%) on the preservation of fresh prawn. The sample used was white shrimp prawn (Penaeus monodon). The samples were soaked in glyroxyl solution with different concentrations. The analyses were conducted for organoleptic, Total Plate Count (TPC) and E. coli at 0 and 3 days storage at refrigerated temperature. The results showed that the use of glyroxyl solution (0%, 0.3% and 0.5%) has no effect on the organoleptic parameters of the sample (appearance, color and flesh). However, after 3 days of storage the effect of glyroxcyl became apparent especially for 0 % glyroxcyl treatment. The number of E. coli showed that application of glyroxyl could prevent the growth of E. coli and reduce the number of E. coli in the samples. In addition the E. coli obtained was less than number < 3 / < 3 in all samples after 3 days storage. Increase in glyroxyl concentration resulted in the decrease of bacterial number (TPC) both for 0 and 3 days storage
INTRASEASONAL VARIATIONS OF NEAR-SURFACE ZONAL CURRENT OBSERVED IN THE SOUTH-EASTERN EQUATORIAL INDIAN OCEAN Iskhaq Iskandar
JOURNAL OF COASTAL DEVELOPMENT Vol 15, No 1 (2011): Volume 15, Number 1, Year 2011
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Abstract

Dynamics of intraseasonal variability in the near-surface zonal currents in the southeastern equatorial Indian Ocean is examined through the analysis of the observed currents at 1.5S, 90E and sea surface height (SSH) as well as wind fields along the equator for the period of 23 October 2001 to 3 July 2007. The result demonstrates that the zonal current has energetic intraseasonal variations within the period band of 30–70 days. These oceanic intraseasonal variations are forced by the atmospheric intrasea-sonal disturbances from the west to the central Indian Ocean basin west of the mooring location. The coherence analysis indicates that these intraseasonal zonal currents are coherent with the intraseasonal SSH along the equatorial Indian Ocean. The coherence and lag-correlation analyses agree that these intraseasonal zonal currents are associated with eastward propagating waves with a phase speed falls in the first two vertical modes of baroclinic waves observed in the equatorial Indian Ocean.
GROWTH DETERMINATION OF TROPICAL LIMPET Cellana testudinaria (Linnaeus, 1758) LIVING ON THE ROCKY SHORE OF OHOIWAIT, SOUTHEAST MOLUCCAS, INDONESIA Abraham S Khow
JOURNAL OF COASTAL DEVELOPMENT Vol 10, No 2 (2007): Volume 10, Number 2, Year 2007
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Abstract

Monthly shell-length frequency distributions were used to analyse the size and age structure of the limpet population inhabiting the rocky shore of Ohoiwait, Southeast Moluccas. The lengths of the collected specimens ranged from 8.0 to 31.8 mm. The analysis of the successive frequency distributions suggested that the population consisted of 4 to 5 distinct age groups (cohorts) at any given time, and that two new cohorts recruited during the one-year investigation period. An analysis to determine growth pattern using FiSAT software showed that the longevity of C. testudinaria extended up to 2 years. The values of von Bertalanffy growth parameters (L¥, K and t0), estimated from size-frequency distributions, were 33.1 mm, 1.4 yr-1, and 0.09, respectively. The highest growth increments were 25% and 18% of the asymptotic length during the first 3 and 6 months, respectively. The effects of environmental variables on the growth rates showed important seasonal variations, with the highest increment of 2.6 mm/month during dry season. Here, growth parameter of C. testudinaria limpet shows the same value as other tropical limpets and depends on environmental variables.
THE BEHAVIOR OF 210PB OFF COAST ULSAN, GAMPO AND POHANG WATERS, KOREA M. Muslim
JOURNAL OF COASTAL DEVELOPMENT Vol 12, No 3 (2009): Volume 12, Number 3, Year 2009
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Abstract

During summer of August 2000, the behavior of 210Pb was studied in off coast Ulsan, Gampo and Pohangwaters, Korea as an area potentially upwelling occur. Water samples were collected vertically inshore andoffshore at each station. The highest of 210Pb activity occurred in the surface layer as derivate fromatmosphere and then decreased with increasing depth. The lower 210Pb activity in bottom layer was causedby scavenging of particulate matter and strong affinity of unsupported 210Pb to soil and sediment particles.In middle layer of the water column activity of 210Pb fluctuated due to water masses of North Korea ColdWater (NKCW) that flows in this layer. The water mass of NKCW also affect on increasing dissolved oxygen(DO), where the highest of DO concentration occurred in this middle layer. The vertical distribution of 210Pbin the study area was generally not different between inshore and offshore, and the activity of 210Pb thatdetermine also was not significant different with previous studies.
DIATOM STRATIGRAPHY OF MANGROVE ECOSYSTEMS ON THE NORTHERN COAST OF CENTRAL JAVA Tri Retnaningsih Soeprobowati; Sri Widodo Agung Suedy; Peter Gell
JOURNAL OF COASTAL DEVELOPMENT Vol 15, No 2 (2012): Volume 15, Number 2, Year 2012
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Abstract

The natural mangrove ecosystems along the Northern Coast of Central Java were very limited in extent, even had replanted almost twenty years ago. Naturally, the upper layer of sediment are the latest deposition (superposition). Environmental condition recently are recorded in the top sediment layer, and can be used to reconstruct past condition  (the present is the key to the past). The potential use of diatoms to reconstruct palaeoecology is well established. Diatoms are microscopic algae that form siliceous frustules which make them well preserved in sediment. Diatoms and their assemblages are very useful as integrated indicators of environmental changes because their distribution is closely linked to water quality parameters as well as their affinities to several physical habitats. This research was conducted in order to determine the changes of mangrove ecosystem in the Northern Coast of Central Java based on diatom stratigraphy. Sediment samples from mangrove sites were taken from Pekalongan, Brebes, Semarang, Demak and Rembang. Diatom analysis, consist of digestion, preparation, and identification. The diatom stratigraphy was performed by Software of  C2 1.5.1. Stratigraphycally, the mangrove ecosystems along the Northern Coast of Central Java were previously more influenced by freshwater rather than the marine sources which dominate today.
MANGROVE AND ITS EFFECT ON THE DEVELOPMENT OF SMALL RUMINANTS IN THE COASTAL AREAS Didiek Rahmadi
JOURNAL OF COASTAL DEVELOPMENT Vol 1, No 3 (1998): Volume 1, Number 3, Year 1998
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Abstract

Mangrove has as an important role in the coastal area. Thus, it must be managed properly. An experiment on its management was carried out in Morodemak villages, Bonang subdistrict, Demak district, central Java Province. Sheep owned by the fisherman were used as a material of the experiment. These were taking using purposive random sampling method. Sample was chosen from three different locations. It was determined on the basis of the distance from farmer housing to the mangrove areas. It was divided into three categories, namely: close: 0-2 km; medium: 2-4 km; and distant: >4 km). survey was done in order to collect data on mangrove, management system, and status of hematology (triglyceride and protein total of plasma blood) of sheep. The experiment was conducted by managing the sheep traditionally by giving them indigenous grass and leaf mangrove. There was no difference in the content of triglyceride and protein total of plasma blood of sheep managed at three different areas. This phenomenon occurred due to only the quality of leaf of mangrove, which has been fed to the sheep.
“RUMAH PANGGUNG” FOR THE SETTLEMENT WITH SEA LEVEL RISE PROBLEM IN THE FISHERMEN SETTLEMENT OF TAMBAK LOROK SEMARANG Edi Purwanto
JOURNAL OF COASTAL DEVELOPMENT Vol 13, No 2 (2010): Volume 13, number 2, Year 2010
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Abstract

Global warming is the natural phenomenon caused by increased glasshouse gases and thinned ozone layer in the atmosphere. The increasing temperature of the earth causes climate change and sea level rise. Some coastal regions in Indonesia have suffered because of it, and the greater impact is on the people’s life because their activities in the settlement of coastal city are influenced directly or indirectly by this natural phenomenon. With the conditions as mentioned above, Indonesia as the biggest archipelago state in the world with its long coastal region seems to experience significant loss. The loss suffered by coastal houses because of sea level rise can be the loss of the physical functions and the investment of the houses. If the impact of sea level rise can be anticipated, so the loss can be prevented by conducting adaptation on natural changes that last slowly by, for example, making dams and utilizing the rumah panggung model. The use of rumah panggung is chosen as one of the solutions to deal with the impact of sea level rise in the troubled settlement of fishermen, Tambak Lorok Semarang, because the area experiences the tide for around 80 days in a year. The other benefit of rumah panggung is to minimize the negative impact, such as the physical damage of houses, humid house environment, and the material of the house cannot last longer. Besides, rumah panggung can use bamboo as local material, which is available with reasonable price.    
CHARACTERIZATION and QUALITY of SEMI REFINED CARRAGEENAN (SCR) PRODUCTS FROM DIFFERENT COASTAL WATERS BASED ON FOURIER TRANSFORM INFRA RED TECHNIQUE Eko Nurcahya Dewi; YS. Darmanto; Ambariyanto .
JOURNAL OF COASTAL DEVELOPMENT Vol 16, No 1 (2012): Volume 16, Number 1, Year 2012
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Abstract

Semi Refined Carrageenan (SRC) product is considerably cheaper and easy to produce as a natural polysaccharide hydrophilic in food and other product. The aim of this research was  to evaluate  the quality of two different SCR products come from different  coastal waters  of seaweed culture. The products  were then compared  to commercial SCR on the quality based on their  chemical  quality (Fourier Transform Infra Red, sulphate content and heavy metals) and physical quality  (gel strength and viscosity). The method of FTIR was useful as a quality screening for commercially seaweed culture at different geografic places based on their chemical structure. Raw material that have been used for SCR product  was  Eucheuma cottonii with k-carrageenan type. FTIR spectroscopy showed the molecular present in three different samples are quite similar, it can be found spectra band of 1257,59 cm-1 which referred to esther sulphate, 933,55 cm-1 for 3,6 anhydrogalactose and 848,68 cm-1 assigned to  galactosa-4- sulphate respectively. The SCR product from  different coastal waters were different on their quality.

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