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INDONESIA
JOURNAL OF COASTAL DEVELOPMENT
Published by Universitas Diponegoro
ISSN : 14105217     EISSN : -     DOI : -
Core Subject : 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
MITIGATION MEASURES FOR GAZA COASTAL EROSION Abualtayef, Mazen; Foul, Ahmed Abu; Ghabayen, Said; Abd Rabou, Abdel Fattah; Seif, Ahmed Khaled; Matar, Omar
JOURNAL OF COASTAL DEVELOPMENT Vol 16, No 2 (2013): VOLUME 16, NUMBER 2, YEAR 2013
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Abstract

Coastal erosion is an ongoing hazard affecting Gaza beach, but is worsening due to a wide range of human activities such as the construction of Gaza fishing harbor in 1994-1998. The net annual alongshore sediment transport is about 190×103 m3, but can vary significantly depending on the severity of winter storms. According to the observed wave heights and directions, the net waves are cross-shore, therefore vast quantities of sediments may transfer to deep sea. The main objective of this study is to mitigate the erosion problem of Gaza coast. Change detection analysis was used to compute the spatial and temporal change of Gaza shoreline between 1972 and 2010. The results show negative rates in general, which means that the erosion was the predominant process. Gaza fishing harbor caused a serious damage to the Beach Camp shoreline. Consequently, several mitigation measures were considered in this study, which are: relocation of Gaza fishing harbor to offshore, groins, detached breakwaters, wide-crested submerged breakwaters and beach nourishment. Several numerical model tests associated with coastal structures are conducted to investigate the influence on morphodynamics. The results show that the relocation of the harbor is the best alternative to stop trapping of the sediments. If for any reason the relocation was not carried out, the wide-crested submerged breakwater alternative is an effective structure for preventing sandy beach erosion. The artificial reef type of submerged breakwaters with beach nourishment is recommended for Gaza beach, because it is an environmentally friendly and improving the ecosystem of marine life.
IMPACT OF HEAVY METALS CONTAMINATION ON THE BIODIVERSITY OF MARINE BENTHIC ORGANISMS IN JAKARTA BAY Takarina, Noverita Dian; Adiwibowo, Andrio
JOURNAL OF COASTAL DEVELOPMENT Vol 14, No 2 (2011): Volume 14, Number. 2, Year 2011
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Abstract

Alteration of land is continuing to increase inorganic matter to marine ecosystems and reduce marine biodiversity. Therefore, we investigated the interplay among land use and heavy metal (Cr, Cu, Pb, Zn) inputs from 8 rivers of Jakarta Bay to the benthic biodiversity. At current time, land uses surrounding Jakarta Bay are fulfilled with industrial activity, settlement, and agriculture. Total concentration of Cr, Cu, Pb, and Zn were determined using the Atomic Absorption Spectrometry in order to assess and compare contamination levels among land use types. Results showed that the average concentrations of heavy metals in sediment were generally higher in river-mouth received water from industrial than those in agriculture. Those land use related metal pattern were also reflected in the benthos diversity. Macrobenthic community diversity decreased when inputs of organic matter increased. Decreases in macrobenthic diversity were mainly linked to an increasing abundance of species with specific functional traits, specifically deposit–feeding polychaetes. Our finding confirmed that land use in the form of industrial areas were potential to produce toxic material to ecosystems. Therefore, we recommend that the development need to consider the allocation of physical infrastructure particularly near waterways.
THE POTENTIAL NEGATIVE IMPACT OF AIR LEAD POLLUTION ON CHILD DEVELOPMENT A PRELIMINARY STUDY IN TAMBAKLOROK, SEMARANG Husni, Amin
JOURNAL OF COASTAL DEVELOPMENT Vol 4, No 1 (2000): Volume 4, Number 1, 2000
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Abstract

A review about potential negative impacts of air lead pollution especially on child development, based on a result ofa cross sectional study conducted in Tambaklorok-Semarang, an area with a very high air lead pollution, is reported. Subjects in the study were mothers who have lived more than three years in the area and their infants. The `subjects' characteristics, including age, height, weight, lead blood concentration (Pb- blood), Hemoglobin (Hb}, and the infants' developmental score were measured. The air lead concentration was measured for comparing to the air lead concentration reported by a previous research. Re-measurement ofthe Pb-air in August 1999 in Tambaklorok had a similar result with the Pb- air measured in August 1996 that was 100 times higher than that in a non·polluted Pb·air area. Statistical analysis showed that there was no signyicant correlation between the child Pb-blood and Matemal Pb-blood child ’s age, child ’s Hb, child ’s nutritional status that was calculated using Mass Body Index, and child development score, respectively. It seemed that child development was not influenced by the air lead exposure. The children were suffering fom anemia, but there was no signyicont correlation between the child Pb-blood and the child Hb.  
EFFECT OF FRESH FEED AND DENSITY TO THE SURVIVAL RATE OF JUVENILE MANGROVE CRAB SCYLLA SERRATA Suprapto, Djoko
JOURNAL OF COASTAL DEVELOPMENT Vol 5, No 1 (2001): Volume 5, Number 1, Year 2001
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Abstract

The problem of seed production of Scylla serrata juvenile is the massive mortality due to cannibalism among them that normally happen when the animal undergone the molting. The density of juvenile and the feed play important role to avoid the cannibalism. The aim of the study is to understand the interaction between fresh feed and density in controlling the mortality of the juvenile reared in the laboratory scale. A factorial plot with three levels of treatments of fresh feed and three levels of juvenile densities was used in this experiment. The fresh feed treatment did not significantly influence either survival rate or growth rate of juvenile. On the other hand, the density strongly influenced the survival rate of juvenile but not to the growth rate.
ADSORPTION OF Mg(II) ION FROM AQUEOUS SOLUTION ON CHITOSAN BEADS AND CHITOSAN POWDER Cahyaningrum, Sari Edi; Narsito, N; Santoso, Sri Juari; Agustini, Rudiana
JOURNAL OF COASTAL DEVELOPMENT Vol 13, No 3 (2010): Volume 13, Number 3, Year 2010
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Abstract

A basic investigation on the removal of Mg(II) ion from aqueous solution by chitosan beads was conducted in a batch adsorption system. The influence of different experimental parameters; pH, agitation period and different concentration of Mg(II) ion was evaluated. A pH 7.0 was found to be an optimum pH for Mg(II) adsorption onto chitosan powder and chitosan beads. The Langmuir and Freundlich adsorption isotherm models were applied to describe the isotherms and isotherm constants for the adsorption of Mg(II) onto chitosan powder and chitosan beads. Results indicated that Mg(II)  uptake could be described by the Langmuir adsorption model. The maximum adsorption capacities of Mg(II) ion onto chitosan powder and chitosan beads were 7.20 and 17.39 mol gâ^’1, respectively. The rate of adsorption Mg(II) on chitosan powder and chitosan beads  were 16.0.10-4 min-1 and  48.00 . 10-4  min-1, respectively.      
CEPHALOPOD RESOURCES OF THE SOTH SULAWESI SEAS Ghofar, Abdul
JOURNAL OF COASTAL DEVELOPMENT Vol 1, No 2 (1998): Volume 1, Number 2, Year 1998
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Abstract

A study was conducted in South Sulawesi including Takaboberate Islands and adjacent areas from October 1994 to March 1995 to describe the cephalopod fauna in the area and to assess the status of their utilization. Six major observations and specimen collection were carried out around Pulau-pulau Selayar, Rajuni, Tinanja, Taka Lamungan, Tarupa and landing places in Ujung Pandang and Pare-pare. Most observations were made by means of snorkeling. Identification of specimens were carried out upon fresh specimens, which were then preserved in 4% formalin for 1-2 day depending on their size, prior to transporting for further laboratory observations and deposition. Fifteen species of cephalopods, representing 4 species of the family Loliginidae, 1 species of Enoploteuthidae, 7 species of Sepiidae, 1 species of Octopodidae, and 2 species of Nautilidae were identified. During the survey, spawns of 2 species of family Sepiidae were also collected, however there were no strong evidence of the occurrence of spawning ground for the species in the area, at least during the period of survey. The MSY for squid was estimated to be 1.840 ton per year, corresponding to an optimum effort of 4.800 bagam-prahu. Further increase intensity is possible, although a cautious management required, including continuous monitoring of the fishery and squid biology.
THREATS TO THE MANGROVES OF THANE CREEK AND ULHAS RIVER ESTUARY, INDIA. Borkar, MU.; Quadros, G.; Athalye, R.P.
JOURNAL OF COASTAL DEVELOPMENT Vol 11, No 1 (2007): Volume 11, Number 1, Year 2007
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Abstract

The mangroves have adapted themselves best in the shallow sea coast, sheltered estuaries and deltaic:ones ofthe tropics and subtropics with characteristic environmental conditions vi:. temperature ranges between 200 C to 300 C, moderate to high monsoon precipitation i.e. [000 — 3000 mm/ annum, high humidity but with coastal aridity. On the sea-land intedace in global mangrove systems, there are gradual, slow or quickly changing ecological or geomorphological conditions to which mangroves have to adapt. The human thrust or pressure, other biotic factors and interactions also cause changes in mangrove ecosystems. Due to this the mangroves are now very dynamic but have become fragile through out the globe. Mangroves have various adaptations to cope with the stress to which they are subjected and jbr these adaptations they have to expend a lot of energy. Increased salinity has brought about floristic changes in the mangroves, particulariv in growth, form and structure of plant parts such as pneumatophores. thickening of leaves, salt extruding glands, viviparity stunted tree growth of some species and changes in plant communities. The mangrove forests stand as a barrier between the land and the sea and are jeeding and breeding grounds for dgferent fishery organisms. The mangroves if the world especiallv of the Indian continent are threatened and are on the verge of losing their identity. The study on the distribution of mangroves and the associate plants along Ulhas river estuary and the Thane creek during the period September 200] to August 2002 showed presence of 8 genera and I4 species ey' mangroves and I I genera and I2 species ry mangrove associates. The dominant mangrove type was Avicennia marina where as Acanthus ilicyblius was the mtyor associate type. When compared with the earlier data it was apparent that the mangrove cover was signtficantlv reduced The main threat to mangroves was due to anthropogenic activities, like cutting for jitel; reclamation for various purposes such as industry, agriculture, sand landing (reti-bunder), solid waste dumping, aquaculture ponds, construction of housing colonies, roads and bridges violating the CRZ regulation. There is an urgent need to conserve the mangroves of this region; which can be achieved through education, motivation of local people and strict supervision by administrative bodies and non-government organi:ations
THE EFFECT OF SMOKING DURATION ON THE QUALITY AND DHA COMPOSITION OF MILKFISH (Chanos chanos F) Swastawati, Fronthea
JOURNAL OF COASTAL DEVELOPMENT Vol 7, No 3 (2004): Volume 7, Number 3, Year 2004
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Abstract

Milkfish contains omega-3 fatty acids (DHA), which is very important to maintain the health of human being. The research is mainly aimed to evaluate the reduction of DHA composition during smoking process. Organoleptic value of the product i.e. : 8,1 for fresh fish; 8,59 for smoked fish A (3 hrs smoking duration) and 8,78 for smoked fish B (5 hrs smoking duration). The composition of fish changes normally  i.e. moisture content of 75,03% (fresh fish) decreases to 70,08% (A) and 68,11% (B). Protein composition increases from 20,30% (fresh fish) to 23,95% (A) and 27,50% (B). Lipid content increase from 0,61% (fresh fish) to 1,79% (A) and 3,53% (B). Ash content changes from 1,35% (fresh fish) to 2,03 (A) and 1,89% (B). SPSS analysis of DHA found of  p < 0,05 means that A and B were significantly different. DHA content was found drastically decrease from 121,19 mg/100g (A) to 16,4 mg/100g (B). ANOVA result proved that there is an interaction between smoking duration and the composition of DHA. Smoking duration is recommended no longer than 3 hrs in order to maintain its quality and minimizing the reduction of DHA. hange�� :>p� x� pan> 
SCREENING AND CHARACTERIZATION OF BACTERIAL CHITOSANASE FROM MARINE ENVIRONMENT Chasanah, Ekowati; Zilda, Dewi Seswita; Uria, Agustinus R
JOURNAL OF COASTAL DEVELOPMENT Vol 12, No 2 (2009): Volume 12, Number 2, Year 2009
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Abstract

Screening of extracellular chitosanase from bacterial isolates associated with marine sponges have been done. Out of 100 bacterial isolates, forty isolates were capable of forming clearing zones on the chitin media and one isolate, 34-b, produced the highest chitinolytic index. The enzymes was produced on chitin liquid medium at 37oC in a shaking waterbath for a five-day cultivation. Crude enzymes were prepared by cell-free supernatant (CFS) and concentrated through 70% (saturated) ammonium sulphate percipitation followed by dialysis. The enzymes worked best at pH and temperature of 6-7 and 60oC, respectively. The half-life (T1/2) for chitosanase activity was 500.2 min or 8.34 hours (at 37oC) and 55.12 min (at 50oC), indicating the enzyme are quite stable at that temperature. However, around 80% of the original activity was lost at 60oC after 15 min of incubation. 
CHRONIC EFFECTS OF DETERGENT SURFACTANT (LINEAR ALKYLBENZENE SULFONATE I LAS) ON THE GROWTH AND SURVIVAL RATE OF SEA BASS (Lates calcalifor Bloch) LARVAE Rejeki, Sri; ., Desrina; Rahmat, Andi
JOURNAL OF COASTAL DEVELOPMENT Vol 8, No 3 (2005): Volume 8, Number 3, Year 2005
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Abstract

Sea bass (Lates calcal&r Bloch), one of the economically important marine fish, is getting more important for marine-culture. This fish is categorized as a euryhaline species, i.e. with a wide salinity tolerance, range 32 — 35 ppt, and in the river, estuarine and mangrove areas with the salinity between 0 - 25 ppt. The adult of sea bass is spawn in marine waters while the larvae and juvenile are is spawn mostlv found in the estuarine. Estuarine water is known as a good nursery and feeding ground, however it is also knownias a pollutant trap. Therefore, the larvae of seabass and other euryhaline species are very susceptible to this condition.Suryizctant detergent Linear A lkyl—benzene SuU"onate (LAS} is a non—ionic so]? detergent, with a long straight carbon chain, has a powerful cleaning capability; it is toxic to aquatic organisms, and however it is biodegradable. Therefore, it is widelv used for cosmetic and household purposes. This research was done to find out the chronic effect (LCM-96 hours) and acute ejects of detergent LAS on the larvae of sea bass (Lates calcaliver Bloch}. A Bioassay method was applied to jind out the acute toxicity, and Probit Analyses is used to find out the LC 50-96 hours of detergent LAS on sea bass larvae. Randomized design was carried out to observe the chronic ejects on the growth and survival rate ofthe sea bass larvae. There were six treatments applied, i. e, : A (0% of LC ,,,-96 hours); B (5% of LCM-96 hours}; C (10% of LCM-96 hours); D (/5% of LC50-96 hours); E (20% of LCM-96 hours); F (25% ofLCm-96 hours).The results showed that the treatment of LCM-96 hours of detergent LAS on sea bass larvae, I. I8 mg/I, was considered as moderatelv high toxicity. The absolute biomass growth of sea bass larvae was not afected by sub·lethal concentrations of detergent ALS, however, chronic concentrations of detergent LAS tyfected the daily growth rate of sea bass larvae signyicantb¤ (o<0.0l). As a conclusion, the acute toxicity of LAS detergent on sea bass (Lates calcaliver Bloch} larvae was l. I 8 mg/l. The sub—lethal concentrations of detergent LAS on the sea bass larvae did not influence the biomass growth and survival rate but affected the daib¤ growth rate of sea bass larvae significantly. The sea bass larvae exposed to the sub lethal concentrations of LAS detergent hr 30 days resulted in the gill damage, i.e..· hypertrophy, hyperplasia, telengeastases and melanization of the gill. The congestion and vacuolar degeneration ofthe liver were also observed.

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