Judul: Seagrass Ecosystem Health Condition and its Relationship with Tourism Activities in Pari Island, Thousand Islands
Abstrak: Ekosistem lamun merupakan ekosistem yang memiliki berbagai manfaat bagi manusia. Salah satu ekosistem lamun yang perlu dijaga kelestariannya berada di Pulau Pari. Pulau Pari termasuk salah satu kawasan wisata yang sering dikunjungi wisatawaan dan memiliki perkembangan sangat pesat sehingga menimbulkan kekhawatiran terjadinya kerusakan pada ekosistem lamun. Penelitian ini bertujuan untuk menganalisis indeks kesehatan lamun sehingga dapat dijadikan bahan informasi dan saran rehabilitasi dalam pengelolaan ekosistem lamun di Pulau Pari. Metode yang digunakan dalam penelitian ini adalah metode transek kuadran untuk data lamun dan metode purposive sampling untuk data wawancara. Nilai indeks kesehatan lamun di Pantai Pasir Perawan memiliki kategori buruk sehingga menunjukkan adanya aktivitas wisata di sekitar ekosistem lamun. Hasil analisis likert menunjukkan aktivitas wisata tidak merusak ekosistem lamun secara langsung. Beberapa faktor yang dapat merusak ekosistem lamun, di antaranya adalah sampah yang berasal dari luar pulau dan pengerukan pasir laut untuk pembangunan pulau., Seagrass ecosystems are ecosystems that have various benefits for humans. One of the seagrass ecosystems that needs to be preserved is on Pari Island. Pari Island is one of the tourist areas that is often visited by tourists and has a very rapid development, causing concerns about damage to the seagrass ecosystem. This study aims to analyze the seagrass health index so that it can be used as information material and rehabilitation suggestions in managing seagrass ecosystems on Pari Island. The method used in this research is the quadrant transect method for seagrass data and purposive sampling method for interview data. The seagrass health index value at Pasir Perawan Beach has a poor category, indicating the presence of tourist activities around the seagrass ecosystem. Likert analysis results show that tourism activities do not directly damage seagrass ecosystems. Several factors can damage seagrass ecosystems, including garbage from outside the island and dredging of sea sand for island development.
Keyword: Pulau Pari, Pari Island, seagrass ecosystem, aktivitas wisata, ekosistem lamun, kesehatan lamun, seagrass health, tourism activities

Judul: Mangrove Utilization and Mangrove Health at Pari Island, Kepulauan  Seribu
Abstrak: Pemanfaatan suatu ekosistem secara tidak bijaksana dapat menimbulkan ancaman terhadap kelanjutan ekosistem itu sendiri. Tujuan dari penelitian ini adalah mengkaji pemanfaatan mangrove, dampak dan indeks kesehatan mangrove Pulau Pari, Kepulauan seribu. Penelitian ini dilaksanakan pada bulan Juni hingga Agustus tahun 2021 pada dua lokasi yaitu kawasan mangrove yang berada di lingkungan Lembaga Ilmu Pengetahuan Indonesia (LIPI), sekarang diganti menjadi BRIN (Badan Riset dan Inovasi Nasional), dengan kawasan mangrove yang berada di lingkungan wisata Pantai Perawan. Analisis yang dilakukan adalah kondisi ekologis mangrove berdasarkan sejarah pemanfaatan mangrove dan Indeks kesehatan mangrove berdasarkan hasil wawancara dan pengamatan langsung. Mangrove di Pulau Pari pertama kali dimanfaatkan baik secara langsung ataupun tidak langsung oleh masyarakat. Ekosistem mangrove saat ini dimanfaatkan sebagai penyedia bibit mangrove, penyedia sumber daya perikanan, dan objek wisata. Indeks kesehatan mangrove pada kedua stasiun masuk dalam kategori buruk. Terdapat dua jenis mangrove yang ditemukan yaitu jenis Rhizophora stylosa dan Rhizophora apiculata dengan kerapatan yang rendah. Pemanfaatan sebagai tempat wisata berperan paling penting terhadap kerusakan mangrove, antara lain karena peningkatan sampah., Utilization of an ecosystem unwisely can pose a threat to the continuation of the ecosystem itself. This study aimed to examine the use of mangroves, the impact and the health index of mangroves in Pari Island, Thousand Islands. This research was carried out from June to August 2021 comparing two sites, namely the mangrove area in the LIPI, now changed to BRIN, environment and the mangrove area in the tourist area of Perawan Beach. The analysis carried out is the ecological condition of mangroves based on the history of mangrove utilization and the mangrove health index based on the results of interviews and direct observations. The community first used Mangroves on Pari Island directly or indirectly. Mangrove ecosystems are currently used as mangrove seed providers, fisheries resource providers, and tourist attractions. The mangrove health index at both stations was in the bad category. Two types of mangroves were found, namely Rhizophora stylosa and Rhizophora apiculate, with low density. Utilization as a tourist spot plays the most important role in destroying mangroves, partly due to increased waste.
Keyword: Ekosistem Mangrove, Pemanfaatan, Pulau Pari, Mangrove ecosystem, Pari Island, Utilization

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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