Decision Support System for Selection of Suitable Mariculture Site in the Western Part of Java Sea, Indonesia

Mariculture (marine aquaculture) has been intensified and has created essential employment opportunities over the last two-decades in Indonesia, as well as many other countries in the world. This development has negative impact to the environment. Considerable amounts of nutrient waste in dissolved and particulate form were released by intensive fish farming into the environment through feed excess, soluble fish excretion and faeces production. One of the first steps to avoid the dangerous environmental impacts is careful site selection to minimize environmental impacts arising from the farming activities (sustainability) as well as to guarantee adequate conditions from the operational point of view (suitability).The paper focuses on the development of a Decision Support System (DSS) as a tool for the appropriate selection of mariculture site location. The DSS is based on physical, chemical and sediment criteria as well as on data of conflicting coastal use. The GIS analysis results in a map indicating the suitable areas for the improved method of offshore cage mariculture. In this study, emphasis was placed on finfish species; however the methods and results may be employed for other species as well following some modifications.The DSS was applied for the western part of Java Sea, Indonesia. The data were acquired from direct field measurement, numerical modeling and existing information from particular agencies. Numerical modeling was used to obtain spatial and temporal distributions of hydrodynamic parameters (i.e. current velocities and water levels). The Delft3D modeling system (Delft Hydraulics, The Netherlands) was employed for this purpose. The DSS was developed under GIS application of ESRI® ArcGIS™ using weighted overlay method. The results showed the adequacy of the system for supporting governmental authorities in the implementation, environmental controlling, and estimation of overall carrying capacity for environmental sustainable marine fish farming

Decision Support System for Selection of Suitable Mariculture Site in the Western Part of Java Sea, Indonesia

Mariculture (marine aquaculture) has been intensified and has created essential  employment  opportunities  over  the  last  two-decades  in  Indonesia,  as well as many other countries in the world. This development has negative impact to  the  environment.  Considerable  amounts  of  nutrient  waste  in  dissolved  and particulate  form  were  released  by  intensive  fish  farming  into  the  environment through  feed  excess,  soluble  fish  excretion  and  faeces  production.  One  of  the first steps to  avoid the dangerous environmental impacts is careful site selection to  minimize  environmental  impacts  arising  from  the  farming  activities (sustainability) as well as to guarantee adequate conditions from the operational point of view (suitability).The paper focuses on the development of a Decision Support System  (DSS) as a tool for the appropriate selection of mariculture   site location. The DSS is based on  physical,  chemical  and  sediment  criteria  as  well  as  on  data  of  conflicting coastal use. The GIS analysis results in a map indicating the suitable areas for the improved  method  of  offshore  cage  mariculture.  In  this  study,  emphasis  was placed on finfish species; however the methods and results may be employed for other species as well following some modifications.The DSS was applied for the  western part of Java Sea, Indonesia. The data were acquired  from  direct  field  measurement,  numerical  modeling  and  existing information  from  particular  agencies.  Numerical  modeling  was  used  to  obtain spatial  and  temporal  distributions  of  hydrodynamic  parameters  (i.e.  current velocities  and  water  levels).  The  Delft3D  modeling  system  (Delft  Hydraulics, The Netherlands) was employed for this purpose. The DSS was developed under GIS  application  of  ESRI®  ArcGISâ„¢  using  weighted  overlay  method.  The results  showed  the  adequacy  of  the  system  for  supporting  governmental authorities in the implementation, environmental controlling, and estimation  of overall carrying capacity for environmental sustainable marine fish farming

Studi Perubahan Garis Pantai Berdasarkan Interpretasi Citra Satelit Landsat dan Perhitungan Rasio Lahan di Wilayah Pesisir Indramayu Jawa Barat

Wilayah pesisir sebagai kawasan peralihan yang menghubungkan ekosistem darat dan ekosistem laut, sangat rentan terhadap kerusakan dan Perubahan yang diakibatkan oleh berbagai aktifitas manusia di darat maupun di laut. Kabupaten Indramayu merupakan salah satu wilayah di Pesisir Utara Jawa Barat yang mengalami kerusakan paling parah diantara seluruh kabupaten di wilayah pesisir Utara Jawa Barat serta memiliki penggunaan lahan pesisir yang cukup lengkap mulai dari pemukiman, persawahan, tambak, dan industri (PLTU dan MIGAS)..Besarnya Perubahan garis pantai yang meliputi abrasi dan sedimentasi diturunkan dari data citra satelit Landsat wilayah pesisir Kabupaten Indramayu tahun 1994-2009 dengan metode komposit RGB 4, 5, 7 dan Metode AGSO kemudian dilakukan proses digitasi.. Luas abrasi di 11 Kecamatan Pesisir Indramayu dari tahun 1994 – 2009 sebesar 3900,41 Ha dengan laju abrasi rata-rata sebesar 23,64 Ha/ tahun dan Luas sedimentasi sebesar 650,29 Ha dengan laju sedimentasi rata-rata sebesar 4,81 Ha/tahun. Hasil perhitungan regresi terhadap rasio lahan penduduk untuk tahun 2015 sebesar 0,07 Ha/ jiwa dan menurun pada tahun 2025 menjadi 0,05 Ha/jiwa .Rasio lahan petani untuk tahun 2015 sebesar 0,66 Ha/petani dan menurun menjadi 0,55 Ha/petani di tahun 2025

Jakarta Bay as an opportunity for collaborative and integrative research and the need for knowledge brokering

Jakarta Bay as an opportunity for collaborative and integrativeresearch and the need for knowledge brokeringPearson, Stuart*1, Amanda Putri1 and Wiwin Windupranata21 School of Physical, Environmental, and Mathematical Sciences, UNSW, Canberra, 2600, Australia2 Bandung Institute of [email protected] research relationships that develop between Australian researchers and Indonesian researchers are significant. This paper reflects on the experience of a PhD student (Putri et al., 2015), Indonesian and Australian researchers as they seek to address pressing issues in the coast 215 of Jakarta, through various funding opportunities, in a way that is appropriate and efficacious. A quest for sharing capacity resources, research experience (including but not exclusively based on research outputs) and other knowledge needs over four years offers some insights and is also a call for help. Jakarta Bay’s problems are challenging, typical of coastal megacities and the focus of many knowledge investments (research, aid, health, diplomacy, monitoring, regulatory frameworks, spatial planning). So there is a need for interdisciplinary, multi-stakeholder engagements that rarely are solutions as much as messolutions – ongoing programs of long-term adaptation through negotiation between agents. The first part of the paper discusses the experience of an Indonesian Government-funded PhD student working in an interdisciplinary way to discover how water pollution affects the livelihood of traditional fishers as vulnerable stakeholders that rely heavily on the degraded fishery resources. An integrative approach, that combined water quality assessment and participative exercises (group mapping, discussions, and interviews with the fishers, NGO, researchers, and government representatives), was effective in providing deeper insights on the Bay’s water conditions and environmental degradations, how these affected the traditional fishers and how they adapt to the environmental stressors. This illuminates the complex socio-environmental problems in Jakarta Bay where comprehensive solutions are required and therefore more inclusive collaboration between multi-stakeholders is crucial if the Bay's environments and the fishers' livelihood are to be sustained. The second part highlights the collaborations between Indonesian and Australian researchers as they progress beyond this research and hopefully contribute to the development of solutions for Jakarta Bay's problems

The Proceeding of ISIC 2015 Academic Conference

Continuous development on the coast and hinterland have caused degradation of water quality andsignificant loss of natural habitats in Jakarta Bay. This paper highlights initial findings on traditionalfishers’ livelihoods in the face of the environmental changes due to water pollution in Jakarta fishingvillages. Living on the edge of the megacity, they have been both experiencing and observing changesin the water quality and the environments of the Bay. Combining questionnaires, interviews, directobservations, and participatory workshops, the information gathered provide information and insightsabout the fishers’ livelihoods and their adaptation strategies to sustain their livelihood in the face ofincreased uncertainty due to the changes. These information along with their perception on waterpollution and environmental problems are valuable and provide the importance context of integratinglocal knowledge to support more effective decision-making processes