Judul: Pramuka Island’s vulnerability based on shoreline changes
Abstrak: Pulau Pramuka sebagai ibukota Kepulauan Seribu banyak menghadapi tantangan perubahan garis pantai oleh kegiatan antropogenik. Pembangunan kembali pelabuhan, reklamasi pantai, pengecoran jalan, pembuatan tanggul erosi, dan rehabilitasi ekosistem pesisir yang dilakukan dapat mengindikasikan adanya penambahan maupun penurunan garis pantai ke arah perairan. Tujuan penelitian ini adalah untuk menilai tingkat kerentanan pulau berdasarkan perubahan garis pantai dan faktor yang mempengaruhi, serta langkah yang tepat untuk mengelolanya. Data garis pantai diambil dari tahun 2002, 2007, 2012, 2017, dan 2022 menggunakan citra satelit Landsat. Dilakukan digitasi pada layar setiap tahun dan ditumpuk menjadi satu untuk dibuat transek penelitian. Penilaian tingkat kerentanan pulau dilakukan dengan penginderaan jarak jauh dengan metode Digital Shoreline Analysis System (DSAS) yang kemudian hasilnya disesuaikan dengan matriks CVI. Dilakukan ground check untuk membandingkan keadaan pulau di citra satelit dengan keadaan sebenarnya berdasarkan tipologi pantai, LULC, dan ekosistem pesisir. Penilaian ini bisa menjadi acuan untuk dapat mengetahui perubahan yang terjadi, penyebab terjadinya perubahan, serta cara mengatasi perubahan yang membuat pulau memiliki tingkat kerentanan yang tinggi atau sebaliknya. Pulau Pramuka mengalami akresi dan berstatus kerentanan sedang selama 20 tahun. Land use dan land cover serta ekosistem pesisir menjadi faktor yang mempengaruhi, sehingga kondisi ekosistem yang ada di sekitar perlu diberikan perhatian khusus., Pramuka Island as the capital of the Thousand Islands faces many challenges of coastline change by anthropogenic activities. Revitalization of the harbor, coastal reclamation, road casting, erosion embankment, and coastal ecosystem rehabilitation can indicate an increase or decrease in the coastline towards the waters. The purpose of this study is to assess the level of vulnerability of islands based on changes in the shoreline and influencing factors, as well as the best steps to manage them. Coastline data was taken from 2002, 2007, 2012, 2017, and 2022 using Landsat satellite imagery. It is digitized on screen every year and layered together to make the transects. The assessment of the vulnerability level of the island was carried out by remote sensing using the Digital Shoreline Analysis System (DSAS) method, which then the results were adjusted to the CVI matrix. Ground checks were carried out to compare the condition of the island in the satellite image with the actual situation based on the typology of the coast, LULC, and coastal ecosystems. This assessment can be a reference to find out the changes that occur, the causes of the changes, and how to overcome changes that make the island have a high level of vulnerability or vice versa. Pramuka Island has experienced accretion and has been in moderate vulnerability status for 20 years. Land use and land cover as well as coastal ecosystems are the influencing factors, so the condition of the surrounding ecosystem needs to be observed attentively.
Keyword: Pulau Pramuka, kerentanan pulau, garis pantai, digital shoreline analysis system, citra satelit, Pramuka Island, island's vulnerability, satellite imagery, shoreline

Judul: Coastal Ecotourism management strategies on Pramuka Island, Seribu Islands with Social Ecology Approach
Abstrak: Pulau Pramuka merupakan salah satu destinasi unggulan di Kepulauan Seribu dan memiliki potensi alam yang kaya dan menarik bagi pariwisata. Tujuan penelitian ini untuk menganalisis kesesuaian wisata, daya dukung kawasan, persepsi sosial, dan menghitung nilai ekonomi sumber daya wisata untuk merumuskan strategi pengelolaan ekowisata pantai yang efektif. Analisis data yang digunakan adalah IKW, DDK, TCM, analisis Skala Likert dan SWOT. Analisis data pantai di Pulau Pramuka termasuk kategori sesuai (IKW: 2,18) dengan nilai DDK rekreasi pantai sebesar 33 orang per hari. Analisis persepsi mengenai objek wisata pantai berada pada kategori positif (SL: 2,59). Estimasi penerimaan nilai ekonomi wisata tahun 2022 sebesar Rp. 453.830.611,00. Meskipun demikian, perbaikan pengelolaan lingkungan dan kesadaran masyarakat masih diperlukan. Saran strategi-strategi pengembangan ekowisata melalui SWOT adalah mempertahankan daya tarik dan aktivitas wisata, program edukasi masyarakat, penataan dan perawatan fasilitas rutin dan non-rutin, memelihara sumber daya alam, dan memelihara sarana transportasi. Pengelolaan ekowisata yang efektif memerlukan kolaborasi antara pemerintah, masyarakat, dan pemangku kepentingan lainnya untuk memaksimalkan potensi pariwisata sambil melestarikan lingkungan., Pramuka Island is one of the featured destinations on Seribu Islands and has a rich natural potential and attractive for tourism. The purpose of this research is to analyzing tourism suitability, area carrying capacity, social perceptions, and calculate the economic value of tourism resources to formulating coastal ecotourism management strategies on Pramuka Island. Data analysis used IKW, DDK, TCM, Likert Scale analysis and SWOT. Data analysis of the coastal on Pramuka Island is in the appropriate category (IKW: 2,18) with a coastal recreation carrying capacity value of 33 people per day. Analysis of perceptions about coastal attractions is in the positive category (SL: 2.59). Estimated revenue of tourism economic value in 2022 amounted to Rp. 453.830.611,00. Despite this, improvements in environmental management and public awareness is still needed. Suggestions for ecotourism development strategies through SWOT are maintaining tourist attractions and activities, community education programs, structuring and maintaining routine and non-routine facilities, maintaining natural resources, and maintaining transportation facilities. Effective ecotourism management requires collaboration between the government, community, and other stakeholders to maximize tourism potential while preserving the environment.
Keyword: daya dukung kawasan, ekowisata, kesesuaian wisata, strategi pengelolaan, ecotourism, carrying capacity, tourism suitability index, management strategies

Judul: Sintesis Flavonol melalui 2’-Hidroksikalkon
Abstrak: Flavonol is a class of flavonoids commonly found in fruits and vegetables. Flavonol is very useful, especially in food sector and health. In this study, flavonol unsubstituted was successfully synthesized from an intermediate material 2’-hydroxychalcone. The 2’-hydroxychalcone was synthesized by Claisen-Schmidt condensation method between o-hydroxyacetophenone and benzaldehyde using 4 different catalysts, namely KOH 60%, solid pellet of KOH-grinding technique, BF3-Et2O, and NaH in DMF. The KOH 60% was the best catalyst, giving the highest yield (57%). Afterward, the flavonol was synthesized in 1-stage oxidation cyclization of o-hydroxyacetophenone using Algar-Flynn-Oyamada (AFO) reaction, giving 76%. The flavonol total yield from 2’-hydroxychalcone was 43%. All synthesized products were characterized by their melting points and their spectra. The success of the synthesis flavonol opens the way to synthesis of useful flavonol derivatives such as quercetin and kaempferol
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