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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 EFFECT OF VARIOUS SPAT COLLECTOR MATERIALS FOR SPAT ATTACHMENT OF PEARL OYSTER (Pinctada maxima) Endang Arini; Nur Taufiq Syamsudin Putra Jaya
JOURNAL OF COASTAL DEVELOPMENT Vol 15, No 1 (2011): Volume 15, Number 1, Year 2011
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

Early stage development of pearl oyster spat was very critical, hence spat required suitable substrates for their settlement to complete their metamorphosis. In this stage, byssus for the attachment is vulnerable and easy to break if there are some disturbance e.g. water movement, hence spat easily falling onto the bottom layer which may have various dirt materials leading to the dead of the spat. In the pearl oyster culture spat collector is important. The aim of this study is to study the effect of different collector materials to the number of spat settled, to reveal the best collector materials and the endurance of spat at the collector. This study was conducted in PT Autore Pearl Culture, at Sumbawa island, Nusa Tenggara Province. Materials used in this research were collectors of different substance i.e. asbestos (A), bamboo (B), polyethylene and roof ceramic (D) substance. The method used was laboratories experiment with Completely Random Design by 4 treatments and 3 replications. Data taken were the number of spat settlement, endurance test, and water quality. Data tested with Analysis of Variance (ANOVA) and further tested with Duncan Duplicate Regional test. Water quality was analyzed descriptively. The results showed that different collector materials performed a high significantly difference (p<0.01) to the number of spat settled. The best settlement reached by polyethylene [106±3.61 ind. (dm2)-1] followed by bamboo [40±3.61 ind. (dm2)-1], asbestos [16±2.52 ind. (dm2)-1] and roof ceramic [15±3.61 ind. (dm2)-1]. The endurance test indicated that percentage of lowest detached of spat from collector reached by treatment B (10.23%), followed by C (11.12%), D (46.95%) and A (50.60%). Water qualities during study were appropriate for the life and growth of pearl oyster spat.
90Sr CONDITION IN THE EAST CHINA SEA AND NORTH PACIFIC Muslim .
JOURNAL OF COASTAL DEVELOPMENT Vol 10, No 1 (2006): Volume 10, Number 1, Year 2006
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Abstract

The condition of 90Sr concentration in the East China Sea and North Pacific closed to the Japanese island has been measured from 3 – 31 July 2000. There were differences condition of 90Sr concentration in the those locations. The concentration of 90Sr detected in the surface East China Sea and North Pacific ranged 0.44–1.32 mBq/ℓ and 0.66-1.38 mBq/ℓ respectively. Generally, the condition 90Sr concentration in the East China Sea was lower than in the North Pacific. The highest 90Sr concentration occurred in the off shore of North Pacific, because the 90Sr in the open sea is dominantly from nuclear weapon testing and nuclear power plant accident (Chernobyl) rather than other resources, and it take long time to precipitate into the bottom. Kuroshio and Taiwan-Tsushima warm current systems influenced importantly in distribution of 90Sr concentration in the East China Sea beside other physical factors such as fishing activity. These currents were not strong enough to stimulate increasing 90Sr concentration in the coastal region of North Pacific close to the Japanese islands.
RESPONSE OF TROPHIC GROUPS OF MACROBENTHIC FAUNA TO ENVIRONMENTAL DISTURBANCE CAUSED BY FISH FARMING Sapto P Putro
JOURNAL OF COASTAL DEVELOPMENT Vol 12, No 3 (2009): Volume 12, Number 3, Year 2009
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Abstract

Sediment dynamics and the hydrodynamics of the environment cause the complexity and variability inanimal-sediment relationship, both in spatial and temporal. This study is focused on the response ofmacrobenthic fauna to environmental disturbance caused by fish farming using their trophic structure.Their changes in trophic structure can be used as an indicator of disturbance. Eight control sites and eightfarm pontoon sites were samped in a full year period. Two stations at each site were sampled five timesthroughout the year with four replicates. Macrobenthic abundance was categorised based on six majortrophic groups: carnivores (CAR), herbivores (HER), omnivores (OMN), suspension feeders (SF), surfacedeposit feeders (SDF), and subsurface deposit feeders (SSDF). The Infaunal Trophic Index (ITI) andShanon-Wiener diversity index (H’) were used to assess the degree of environmental disturbance caused byfish farming based on trophic structure. The relationship between ITI and H’ was assessed usingSpearman’s rank order correlation (rho). The result showed that the abundance of deposit feeders wassignificantly higher at the farm sites than at the control sites, suggesting that food availability is morevaried and abundant at farm sites than those at control sites. The results of the ITI indicate that the entiresampling sites have been moderately disturbed over the sampling period, with the exception for site BC8.Variability of Shanon-Wiener diversity index (H’) spatially and temporally seems co-vary with ITI, owing tothe influence of taxa richness and evenness.
CHALLENGING FOR SEAGRASS MANAGEMENT IN INDONESIA N adiarti; Etty Riani; Ita Djuwita; Sugeng Budiharsono; Ari Purbayanto; Harald Asmus
JOURNAL OF COASTAL DEVELOPMENT Vol 15, No 3 (2012): Volume 15, Number 3, Year 2012
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Abstract

Seagrasses, one of the important ecosystems in Indonesian coastal waters, have declined mostly due to a variety of multi-sector (i.e. ecology, socio-economy, technology and institution) anthropogenic disturbances. The decline and loss of seagrass meadows will have an effect not only on biodiversity and fisheries productivity within the ecosystems but also on the adjacent ecosystems (coral reef and mangrove forest), and even the effect will spread out far to the outside of the areas where seagrass grow.  Seagrass ecosystems management in Indonesia is urgently required as part of fisheries management. However, this concept has not been understood by most of Indonesian people, including some government officials. Consequently, the seagrass ecosystems are still marginalized in the coastal resource management practices in Indonesia. In order to sustain fisheries productivity, knowledge of impact scales of each seagrass-related multi-sector human activities are very important as one of basic requirements in designing an effective seagrass management.
MARITIME BOUNDARY DELIMITATION THE INDONESIAN CASE *) M.J. Sitepu
JOURNAL OF COASTAL DEVELOPMENT Vol 1, No 3 (1998): Volume 1, Number 3, Year 1998
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Abstract

Indonesia is an archipelagic country with two thirds of its territory represented water. The concept of an archipelagic state us an important one to Indonesia, and the marine sector has never been more important to the notion. This importance is reflected in the priority which marine issues have recived from the government, including the instalment of the National Marine Council in September 1996. Maritime boundary issue often concern claims for marine resources. Maritime boundary delimitation is a fundamental strategy to enforce national sovereignty over marine and coastal areas. For Indonesia, accurate marine boundary delimitation is of primary importance to definiting the nature and extent of the country’s marine resources. Maritime boundaries will be drawn on charts and given due publicity. The limit of the territorial sea, contiguous zone, EEZ, and continental self are measured from straight baselines connecting the outermost points of the outermost islands of Indonesia This paper will detail the current status of Indonesia’s maritime boundary delimitation efforts and its future prospect.
WILL SOFT-BONED MILKFISH-A TRADITIONAL FOOD PRODUCT FROM SEMARANG CITY, INDONESIA-BREAKTHROUGH THE GLOBAL MARKET Tri Winarni Agustini; Indah Susilowati; S Subagyo; Wilis Ari Setyati; Bambang Argo Wibowo
JOURNAL OF COASTAL DEVELOPMENT Vol 14, No 1 (2010): Volume 14, Number 1, Year 2010
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Abstract

One of the famous traditional food products from Semarang city is softboned-milkfish (called as bandengpresto). In national level, Bandeng Presto is the trade mark of Semarang City. Bandeng presto are producedby several outlet in Semarang from small to large in scales. The products are vary, in term of variety,quality, processing technique, packaging and prices. The small-scaler produces less in quality standard,safety, packaging, and marketing system. Nevertheless, there are several small-scaller outlets are able toreach the international market after they promoted their product through webside or internet. The objectivesof the study were to develop the improved quality in production techniques, lay out designed, and themarketing strategy for bandeng presto in Semarang city to support the regional food security and food safety.The results indicated that nutritional content of bandeng presto are good in general and can be considered asgood nutritional resource for human. Raw material and processing technique influence the nutrition value ofthe product. Based on market survey suggests that bandeng presto is more efficiently promoted throughwebsite, especially to touch the long distance customers. In addition, improved in packaging design and inlabelling (recently for exposing information on EPA and DHA of the product) will help customers to assurethe quality of the product properly.
THE CHROMIUM (Cr) CONTENT IN WATER AND IN THE TISSUE OF MUD CRAB (Scylla serrata Forskal.) IN THE BRACKISHWATER PONDS AROUND BABON RIVER ESTUARY Nanik Heru Suprapti; Lachmuddin Sya’rani; Sutrisno Anggoro
JOURNAL OF COASTAL DEVELOPMENT Vol 16, No 1 (2012): Volume 16, Number 1, Year 2012
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Abstract

One of the problems that faced by marine aquacultures is the presence of industrial development in the nearby areas. The research aim was to study Chromium (Cr) content in the waters and in the crabs (Scylla serrata) in Brackishwater ponds around Babon River estuary of coastal areas Semarang, in Central Java. Systematical random sampling was used in this study. Analysis of Cr content in the water was compared to water quality criteria by Indonesian Ministry of Environmental. Analysis of Cr content in the tissue of crab  was based on Manual Criteria by United States Food and Drug Administration (U.S. FDA). Bioconcentration Factor was used to analyse the accumulative of Chromium content. The results showed that Chromium content in the water was 0,078 ppm (dry season) and 0,065 ppm (rainy season), respectively. Chromium content in the tissue of mud crab (Scylla serrata) was 5,237 ppm (dry season) and 4,848 ppm (rainy season) and was under of maximum level recommended (12 ppm). The Bio Concentration Factor (BCF) of Cr content has low accumulative characteristic (<100).
NATURAL BIODEGRADATION OF COPROSTANOL IN AN EXPERIMENTAL SYSTEM OF THREE ENVIRONMENTAL CONDITIONS OF JAKARTA WATERS, INDONESIA Tonny Bachtiar; Agus Sabdono
JOURNAL OF COASTAL DEVELOPMENT Vol 8, No 1 (2004): Volume 8, Number 1, Year 2004
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Abstract

Constraint of using bio-indicator (coliform bacteria) as an indicator of domestic (sewage) pollution in the environment with high environmental stress encourages the discovering of other alternate indicators. Coprostanol has been proposed as a chemical indicator of domestic waste pollution, but most research on were conducted in the temperate (high latitude) region. The persistence of coprostanol in tropical region, especially in Indonesia, is still very poor. It is very important to understand the persistence of coprostanol in the nature, as one of the requirements to propose coprostanol as an alternate indicator of domestic waste pollution. In order to better understand the natural biodegradation of coprostanol, experimental system on three environmental conditions (river, river mouth, and coastal waters) was conducted. In April 2004, samples of water and surface bottom sediments were collected from each environmental condition in duplicate. Before the samples were put into aerated and non-aerated aquaria, about 35-40 g of surface bottom sediments were taken to analyze the initial concentration (C0) of coprostanol. The sediments were subsequently sampled from each aquarium within a certain interval day to analyze the concentration of coprostanol (C10, C20, and C40). The results showed that aeration plays not an important role in natural biodegradation of coprostanol. In average, the highest rate of coprostanol biodegradation is 0.438 μg/g day-1 in non aerated coastal water environment, where as the lowest was found in the non aerated river mouth environment (0.021 μg/g day-1). Since coprostanol was degraded very slowly, and could be detected in the sediments of three environmental conditions, coprostanol has an excellent potency to be used as an alternate indicator of domestic wastes.
CALCULATING THE CONTRIBUTION OF ZOOXANTHELLAE TO GIANT CLAMS RESPIRATION ENERGY REQUIREMENTS Ambariyanto ,
JOURNAL OF COASTAL DEVELOPMENT Vol 5, No 3 (2002): Volume 5, Number 3, Year 2002
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Abstract

Giant clams (Tridacnidae) are known to live in association with photosynthetic single cell dinoflagellate algae commonly called zooxanthellae. These algae which can be found in the mantle of the clams are capable of transferring part of their photosynthates which become an important source of energy to the host ( apart from filter feeding activity). In order to understand the basic biological processes of the giant clams , the contribution of zooxanthellae to the clam’s energy requirement need to be determined. This review describes how to calculate the contribution of zooxanthellae to the giant clam’s energy requirement for the  respiration process.
HYDROCARBON DISTRIBUTION IN SEDIMENTS OF JAKARTA BAY Agustin Sumartono; Winarti Andayani; Ermin Katrin Winarno
JOURNAL OF COASTAL DEVELOPMENT Vol 11, No 1 (2007): Volume 11, Number 1, Year 2007
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Abstract

The analysis of sediments hom stations I, 29, 9, I5, 17 and 25 located in Jakarta Bay were carried out. Sampels were Soxhlet-extracted for I4 hours with methylene chloride J methanol (I: I ), followed by saponi/icatian using KOH in methanol and benzene, Unsaponwcation parts were extracted using n-hexanes. Extracted samples were analyzed using gas chromatography with capiler column of SPB-I. From chromatogram results it was noted that the analysis of sea sediment sea from each station in Jakarta Bay indicate the distribution if n-allranes in the range of CN-C;6 which were dominated by an even carbon. From the results it is assumed that Jakarta Bay sediment may have natural hydrocarbon sources which may come from either the red or blue algae.

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