Judul: Analisis keberlanjutan sumber daya terumbu karang untuk ekowisata bahari berbasis keterpaduan stakeholder (studi kasus Pulau Hoga, Kabupaten Wakatobi).
Abstrak: Integrated coastal management model is essential in the management and utilization of resources of small islands. Some marine tourism sites that attract are able to collapse by the activity of marine tourism too. The research has been done in Hoga Island, Wakatobi Regency, since February to December 2012. This study was aimed to analyze the sustainability of marine ecotourism that utilized of coral reef resources by means of the integrated stakeholders approach. In this study, the means of stakeholder were the government, private sector and local community. The three categories of marine ecotourism activity that observed were diving, snorkeling and beach recreation. Based on the suitability analysis from Yulianda (2007), so the location that suitable to dive with totally utilization of carrying capacity were 77 people/day. The appropriated location for snorkeling was the coral reef shelf in the west of Hoga Island with carrying capacity of utilization amounts 2213 people/day. The location that suitable with the beach recreation was in the beachs with amounts utilization carrying capacity 68 people/day. The profit of marine ecotourism activities that acceptable to stakeholder i.e for local community obtained Rp. 1.125,9 million in 2011 from 5 types of business sector and 20 types of vocation. In the 2011, the acceptable of income to the government by tax and entrance fee to marine ecotourism in Hoga Island were Rp. 81,7 million. In the 2010, the organizer of marine ecotourism in Hoga Island had amounts 14,5% of total income from the marine ecotourism activities. Whereas the multiplier effect of marine ecotourism for Keynesian Local Income Multiplier obtained 0,38; for Ratio Income Multiplier Type I obtained 1,57; and for Ratio Income Multiplier Type II obtained 2,27. In the 2011, the total economic value of coral reefs in Hoga Island in 2011 is Rp. 11,88 billion. The resulted of Cluster Analysis to stakeholder were obtained the primary of stakeholder, i.e. Tourism Department of Wakatobi Regency, Wakatobi National Park (BTNW), Wallacea Operation (Opwal), Wakatobi Nature Foundation, The Group Business Community, and The Group Workers Community. The resulted of sustainability analysis shown that status of marine ecotourism sustainability in Hoga Island were potential sustainability categories (60,54).
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Judul: Tunda Island Marine Tourism Development Strategy with Coastal Resources Natural Resources Approach, Serang Regency, Banten.
Abstrak: Tunda Island is a small island that has accessible resources, inaccessible resources, and environmental services that are potential for development in the marine and fisheries sector. Ecosystem environmental services are utilized in tourism activities with the concept of ecotourism. The development of ecotourism has been going on for decades worldwide, especially in tropical areas with coastal assets such as corals, mangroves and beaches. Information in the form of suitability studies and strategies for the use of mangrove ecosystems, coral reefs and beaches as objects of ecotourism needs to be examined to see if natural resources have not been used effectively and optimally as tourist objects. The suitability study needs to be accompanied by a study of each regional activity carrying capacity to maintain the sustainability of natural resources. The methods used in collecting ecological data are water passes for slope beaches, transect quadrat and spot check to identify mangrove, Underwater Photo Transect (UPT) for identifying coral reefs, and Underwater Visual Census (UVC) for identifying reef fish. The collection of economic data is carried out on tourists, while the collection of social data is carried out to several stakeholders organized both at the local community level, up to the province of Banten. To formulate the Tunda Island marine tourism development plan, it used spatial analysis, carrying capacity analysis, economic analysis, and strategy analysis are used using the Hierarchy Process Analysis (AHP). The tourism potential that can be developed is the potential for beach tourism, mangrove tourism potential, snorkeling tourism potential and diving tourism potential. The carrying capacity of beach tourism is 776 people/day, mangrove tourism is 80 people/day, snorkeling tours are 562 people/day and diving tours are 587 people/day. The economic value of willingness to pay by tourists or Willingness to Pay (WTP) is IDR 21 056 198 per year. The key stakeholders of Tunda Island marine tourism are Dinas Kelautan dan Perikanan (DKP) Banten Province and Kelompok Sadar Wisata (POKDARWIS) Tunda Island. The marine tourism development strategy of Tunda Island was arranged using AHP analysis. Developing the marine tourism strategy of Tunda Island was based on ecosystem management priorities by improving the ecosystem, considering carrying capacity, conducting rehabilitation, monitoring and evaluation of ecosystems, improving infrastructure facilities, increasing capacity and empowering communities, integrated management between stakeholders and improving facilities and infrastructure.
Keyword: Carrying capacity, Suitability of tourism, Tunda Island

Judul: Prenilasi Senyawa β-Diketon sebagai Prekursor 3-Prenilflavon
Abstrak: One group of flavonoids that has not been commonly synthesized is 3- prenylflavone. The main objective of this experiment was to synthesize precursor of 3-prenylflavone. Firstly, β-diketone was synthesized via 4 steps from phenol as starting compound with total yield of 24%. Prenylation of β-diketone with prenyl bromide and K2CO3 base produced 4 fractions which were separated by using preparative thin layer chromatography (PTLC) with n-hexane:EtOAc (8:2) as the eluent. Fraction with Rf = 0.80 was further separated by using preparative PTLC with n-hexane:EtOAc (99:1) as the eluent. Two fractions were obtained with Rf = 0.38 and 0.42. The first fraction has been characterized as diprenylated β-diketone with 49% yield. Application of protecting group on the phenolic OH group in β- diketone are needed to obtain monoprenylated β-diketone which can be further cyclized into 3-prenylflavone
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