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Kota semarang,
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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 DIRECTION OF FISHERY DEVELOPMENT IN INDONESIA, AND SOME NOTES ON FUNCTIONAL CHANGE OF PEKALONGAN HARBOUR FROM PUBLIC TO FISHERY HARBOUR, 1940-1980 Sutejo K. Widodo
JOURNAL OF COASTAL DEVELOPMENT Vol 4, No 1 (2000): Volume 4, Number 1, 2000
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

The Java sea has abundant supplies of fish M various species In the past, along the northern coatl of Java, there were several fish landing centers along the northern coast af Java. The Report of the Commissie van ( Commission of) Mindere Welvaart { report] in 1905 mentioned that the existence of these places was related to the ecology of sea sources. Up to the end cf the colonial government, the policy in fish consumption was based on the import of fish, especially dried and salted fish. The policy was maintained up to the Indonesian era in 1961. Afterwards, fish needs was filled through a policy of sefsrwiciency. This policy was able to support efforts in fishery development. Pekalongan harbour was built in 1852 and opened in 1859 cu a public harbour for export-import Since the earlv Twentieth Century, the function of Pekalongan harbour has declined as a result ofthe modernization of Semarang harbour. In 1974, the Pekalongan harbour was the first harbour to be converted from a trade harbour into a special fishery harbour. The functional change and the development ofthe harbour in the following years are related to the great changes in fishery policy and developments in other areas of 1%.. Pekalongan harbour was tranjormed into one of the most interesting fishery harbours in Java because it has several advantageous factors such as topography, safety guarantee, local sources for informed capital,conducive policy of the central government, geography, and local availability ofmiddle level technology.
NEW EMPIRICAL FORMULAE OF UNDERTOW VELOCITY ON MIXED AND GRAVEL BEACHES Christos antoniadis
JOURNAL OF COASTAL DEVELOPMENT Vol 16, No 2 (2013): VOLUME 16, NUMBER 2, YEAR 2013
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Abstract

This paper reports a series of 3-dimensional physical model tests to measure cross-shore current data, generated by oblique wave attack, along gravel and mixed beaches with a uniform slope and a trench. Coastal managers and coastal engineers are beginning to give attention to gravel and mixed beaches due to the fact that they are two of the most effective natural sea defences.There is a need, from a scientific and coastal management perspective to have a deeper understanding of how gravel and mixed beaches operate.The studies described in this paper aim to investigate the behaviour of the undertow velocity on mixed and gravel beaches. Existing formulae have been used to predict the experimental results and new equations for predicting the undertow velocity under these conditions are proposed. The new empirical formulae predict time- and depth-averaged undertow and are based on a nonlinear regression of a modification of the Grasmeijer’s and Ruessink’s model where the zones where divided based on the related distance of the point of interest and the breaking point. Verification with large-scale experiments showed that the new formulae predicted well the undertow velocities on mixed and gravel beach with trench and uniform slope.
POPULATION AND OCCUPATIONAL CHANGE IN A COASTAL VILLAGE Nurdien H. Kistanto
JOURNAL OF COASTAL DEVELOPMENT Vol 3, No 3 (2000): Volume 3 Number 3 Year 2000
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Abstract

In “Sumbersari” there are three major types of productive work: rice farming , fish raising and factory work. The industrial estate which has been operating since the late 1970s has altered the pattern of employment, in part because the agricultural land previously used for rice fields and brackish water ponds has been converted to industrial use. Waves of migrants from other places have taken up residence in Sumbersari either on a temporary or a permanent basis. These migrants have contributed to population growth and comprise he bulk of work force in this village.
ANTI-BACTERIAL PROPERTY OF A CORAL-ASSOCIATED BACTERIUM Bacillus sp. AGAINST CORAL PATHOGENIC BBD (BLACK BAND DISEASE) Agus Sabdono; Ocky Karna Radjasa
JOURNAL OF COASTAL DEVELOPMENT Vol 9, No 3 (2006): Volume 9, Number 3, Year 2006
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Abstract

Marine organisms such as corals are frequently colonized by bacteria that may be pathogenicto them. One of the means by which they are able to combat microbial attack is by chemical defense. Anumber of metabolites obtained from algae and invertebrates may be produced by associatedmicroorganisms. The purpose of study was to isolate and characterize of coral-associated bacteriahaving antibacterial potency against BBD coral disease. A coral-associated bacterium, KM2 isolate,was successfully screened for antibacteria production against indigenous BBD pathogenic bacteriabased on PCR amplification of the non-ribosomal peptide synthetase gene and was identified as closelyrelated to Bacilus sp based on its 16S rDNA.. KM2 strain was found to inhibit the growth of coralpathogenic BBD bacteria tested Myroides odoratimimus strain BBD1, Bacillus algicola Strain BBD2and Marine Alcaligenes bacterium Strain BBD3. This bacterium was found to inhibit the growth of allthose BBD coral pathogenic bacteria.
IMPACT OF CONSTRUCTION AND RECLAMATION ACTIVITIES ON THE WATER QUALITY OF THE THANE CREEK, CENTRAL-WEST COAST OF INDIA Goldin Quadros; Vidya Mishra; Mangal U. Borkar; R.P. Athalye
JOURNAL OF COASTAL DEVELOPMENT Vol 7, No 2 (2004): Volume 7, Number 2, Year 2004
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Abstract

Degradation of natural resources is a major environmental issue the world is currently facing. Estuaries, creeks and coastal water ecosystems are such natural resources that are important as breeding and feeding grounds for fishes and crustaceans. Human activities and alterations made by reclamation have had an adverse effect on their ecology. Due to this, water quality management in these ecosystems has become a necessity. Regular studies of the hydrological parameters are essential for this purpose, as they can assess the status of pollution and help in deciding the mitigation strategy. Water quality of 26 km stretch of Thane creek, central-west coast of India was analyzed in 5 regions of the creek from May 1999 to April 2000. The study revealed spatial and temporal patterns. Heavy suspended solid load (avg. 5.736 gm/L), frequent hypoxia (DO<2.5 mg/L) coupled with excess nutrients like Phosphate-Phosphorus (avg. 0.26 mg/L) and Nitrate-Nitrogen (avg. 0.96 mg/L) were the main features of the creek. The Thane city region showed more deterioration of water quality compared to the other regions in the creek. In this region the suspended solid load showed an increase of 713.69% and dissolved oxygen decreased by 21.55% compared to the data of 1992-93. This can be attributed to the severe onslaught of activities in this region like solid waste dumping, construction of 3 new bridges, etc. since 1993, thereby affecting the flushing characteristic. Hence in order to protect and preserve such ecosystems, alterations to the environment should be meticulously planned.
ASSESSING ECOLOGICAL RESILIENCE OF INDONESIAN CORAL REEFS Imam Bachtiar; Ario Damar; Suharsono .; Neviaty P. Zamani
JOURNAL OF COASTAL DEVELOPMENT Vol 14, No 3 (2011): Volume 14, Number 3, Year 2011
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Abstract

Ecological resilience is an important property of natural ecosystem to be understood in coral reef management. Resilience of Indonesian coral reefs was assessed using 2009 COREMAP data. The assessment used 698 data of line intercept transects collected from 15 districts and 4 marine physiographies. Resilience index used in the assessment was developed by the authors but will be published elsewhere. The results showed that coral reefs at western region had higher average resilience indices than eastern region, and Sunda Shelf reefs had higher resilience indices than coral reefs at Indian Ocean, Sulawesi-Flores, or Sahul Shelf. Four districts were found to have coral reefs with highest resilience indices, i.e. Bintan and Natuna (western region), and Wakatobi and Buton (eastern region). Raja Ampat had coral reefs with lower average resilience indices than that of Wakatobi. Uses of resilience index in coral reef management should be coupled with other information such as maximum depth of coral communities.  
THE CONDITION OF PLYWOOD INDUSTRIAL WORKERS : A CASE STUDY IN SUMBEREJO, CENTRAL JAVA Nurdien H. Kistanto
JOURNAL OF COASTAL DEVELOPMENT Vol 1, No 1 (1997): Volume 1, Number 1, Year 1997
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Abstract

Java is often seen as epitomizing a subsistence farming economy, but since the establishment of sugar factories in the first half of the nineteenth century Javanese villages have been familiar with the notion of factory work and factory workers. As a result of establishment of many large-scale factories in the 1970s, the industrial workforce in java has grown rapidly. These factories from part of the large-scale modern manufacturing and processing sector of the economy which is expected to absorb more manpower as the Indonesian economy is transformed with the enlargement of its industrial base. As a consequence of increasing population in rural Java, structural changes will continue: agriculture will continue to decline, while manufacturing, trade and services will have to play an increasingly important role in absorbing new entrants into the workforce. Limitations on employment in agriculture force people to join the manufacturing workforce : labour will be “pushed” into manufacturing, trade and service, rather than “pulled” out of agriculture (to use White’s description). In Sumberejo, the industrialized village under study, the implications of such a view can be seen in the context of absorption of new entrants into the plywood manufacturing workface. Based on a field research, it goes to the analysis of conditions of industrial worker in the rural village where the plywood factory has been established since the late 1970s. one indication is clear that an ongoing process of diversification of rural-farm occupational opportunities has been taking place; it is also obvious that there is a considerable decrease in rural farm occupational opportunities. Moreover, increasing pressure on land, both fragmentation through inheritance and alteration for industry, has forced a growing number of villages, particularly the younger and more educated but landless, to seek employment off the farm, which is in Sumberejo in the form of plywood manufacturing workforce. The field  survey and observation reveal that a considerable number of plywood factory worker, or their household members, in Sumberejo seek additional income for their households. Those who seek other incomes are not only they who earn a smaller income form the factory; some non-staff members of the factory with comparatively larger industrial income, and/or their wives and other household members, have additional incomes from non-industrial activities, such as farming and trading. Without additional incomes from other activities, many of them can hardly improve their modest lives.
GRAZING ACTIVITY OF THE SEA URCHIN TRIPNEUSTES GRATILLA IN TROPICAL SEAGRASS BEDS OF BUTON ISLAND, SOUTHEAST SULAWESI, INDONESIA Ma&#039;ruf Kasim
JOURNAL OF COASTAL DEVELOPMENT Vol 13, No 1 (2009): Volume 13, Number 1, Year 2009
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Abstract

The research on grazing activity of a sea urchin (Tripneustes gratilla) in tropical seagrass beds wasconducted in Buton Island. The objectives of the research were to study the grazing activity such as foodpreference, grazing rate and grazing times of T. gratilla in tropical seagrass community. The results of theresearch showed that Thalassia hemprichii and Enhalus acoroides are primary food items of T. gratilla andcontained on average of 55 % and 31 % of the gut contents, respectively. The grazing rate of an individualranged from 9.6 - 14.1 g wet weight in 24 hours. The grazing times of T. gratilla were between 01.00 - 11.00a.m. and 15.00 - 21.00 p.m.
THE GROWTH ANALYSIS OF Stichopus vastus (Echinodermata: Stichopodidae) IN KARIMUNJAWA WATERS Bambang Sulardiono; Slamet Budi Prayitno; Ign Boedi Hendrarto
JOURNAL OF COASTAL DEVELOPMENT Vol 15, No 3 (2012): Volume 15, Number 3, Year 2012
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Abstract

Stichopus vastus is one of sea cucumber resources utilize which has commercial economic value, locally known  as “gametes”. Because this species is continuously exploited, while the nature of life has not been known, one of them especially its growth.  Aspect of growth is an important parameter which is used as a basis for evaluating these resources, hence this resource is well managed and can be utilized in a sustainable manner. The study aims to: (1) estimates the growth characteristics mortality rate, recruitment and potential use of sea cucumber of  S.  vastus in Karimunjawa. The study is expected to give beneficial to the species of sea cucumber resource management strategy at  Karimunjawa waters, Jepara. The analysis of the growth parameters of S. vastus obtained values ​​of growth coeficient (K) of 0.55 year-1 and length infinity L ∞ value of 315.80 mm. Therefore the obtained values ​​of K tend to be close to zero value, it indicates the nature of growth tends to slow and with a relatively long life.  Life span of  S. vastus is 5.41 years, which can achieve body lengths of 283.06 to 296.91 mm, and the monthly growth rate ranged from 9.0 to 12.37 mm. The results of the analysis of mortality showed that S. vastus has value of total mortality (Z) of 0.98,  natural mortality (M) of 0.298, and catch mortality (F) of 0.682, with the rate of exploitation (E) of 0.6963. This suggests that the rate of exploitation is above the threshold standard set by the Government of 0.5 (BRKP, 2004). The analysis of the S. vastus the recruitment showed that the higest percentage recruit occurred in May-June is 17.16 - 18.33%. This is presumably due to a population increase of the spawning process in those months, although the value of the addition is not very significant.   It is suggested the need for regulations regarding: (a) the catchment season which is based on the tendency of the reproductive patterns of S. vastus, in Karimujawa, (b) restrictions on the size of the catch, (c) catch quotas, (d) the methods that are environmentally friendly catch, (e) permits the ship / boat used to catch sea cucumbers business. To support the success of regulation, it is necessary to strengthen community institutions through the management of sea cucumber resource-based society, with the Co-management approach.
FISHERIES REGULATION AND ENFORCEMENT IN INDONESIA, MALAYSIA AND THE PHILLIPINES Indah Susilowati
JOURNAL OF COASTAL DEVELOPMENT Vol 2, No 1 (1998): Volume 2, Number 1, Year 1998
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Abstract

Non compliance incidence in the fisheries of Indonesia, Malaysia and the Philippines were found relatively high. The fisheries management is effectively applied when compliance is attained. In order to secure the compliance enforcement and surveillance are needed. In fact, enforcement is costly. This paper suggests adopting the ‘cheap’ enforcement and surveillance strategy using co-management approach.

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