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: Mangrove Resources Management Strategy in Pari  Island, Seribu Islands
Abstrak: SHAVA HUSNANIZAHWA. Strategi Pengelolaan Sumberdaya Mangrove di Pulau Pari, Kepulauan Seribu. Dibimbing oleh Prof. Dr. Ir. FREDINAN YULIANDA, M.Sc. dan Prof. Dr. Ir. MENNOFATRIA BOER, DEA. Ekosistem mangrove memiliki peran penting dalam komponen penyusun wilayah pesisir yaitu menjaga garis pantai dan mencegah terjadinya abrasi. Ekosistem mangrove berfungsi sebagai tempat pemijahan (spawning ground), tempat pengasuhan (nursery ground), dan tempat mencari makan (feeding ground) oleh biota laut. Masyarakat sering mengambil buah mangrove dan nelayan biasanya menangkap ikan di sekitaran mangrove. Destinasi wisata yang ditawarkan oleh masyarakat yaitu mengelilingi hutan mangrove menggunakan perahu milik masyarakat. Pengelolaan yang dilakukan oleh masyarakat Pulau Pari masih mengedepankan mass tourism sehingga dihawatirkan menimbulkan kerusakan dan pencemaran lingkungan. Tujuan penelitian adalah mengetahui kondisi sumberdaya mangrove dan menentukan strategi pengelolaan pada sumberdaya mangrove. Penelitian dilaksanakan pada bulan September hingga November 2023 di Pulau Pari, Kepulauan Seribu. Analisis yang digunakan adalah Indeks kesehatan mangrove (IKM) dan analisis SWOT. Hasil yang diperoleh adalah nilai IKM pada area penelitian tergolong kedalam kategori sedang. Terdapat tiga jenis mangrove yaitu Rhizophora stylosa, Rhizophora apiculata dan Sonneratia alba. Strategi alternatif berdasarkan prioritas untuk pengelolaan sumberdaya mangrove yaitu implementasi dan penegakan aturan yang jelas terkait pengelolaan mangrove dengan adanya keterlibatan antara pemerintah dan masyarakat serta melakukan konservasi mangrove berbasis masyarakat dengan adanya keterlibatan pemerintah., SHAVA HUSNANIZAHWA. Mangrove Resources Management Strategy in Pari Island, Seribu Islands. Supervised by Prof. Dr. Ir. FREDINAN YULIANDA, M.Sc. and Prof. Dr. Ir. MENNOFATRIA BOER, DEA. The mangrove ecosystem plays an important role in the components of coastal areas by maintaining the coastline and preventing erosion. The mangrove ecosystem functions as a spawning ground, nursery ground, and feeding ground for marine biota. The community often harvests mangrove fruits, and fishermen usually catch fish around the mangroves. The tourism destination offered by the community includes tours around the mangrove forest using local boats. The management conducted by the Pulau Pari community still prioritizes mass tourism, which is feared to cause damage and environmental pollution. The aim of the study is to determine the condition of mangrove resources and to develop a management strategy for these resources. The research was conducted from September to November 2023 on Pari Island, Seribu Islands. The analyses used are the Mangrove Health Index (IKM) and SWOT analysis. The results show that the IKM value in the research area falls into the poor category. There are three types of mangroves Rhizophora stylosa, Rhizophora apiculata, and Sonneratia alba. The alternative strategy based on priority for mangrove resource management includes the implementation and enforcement of clear regulations regarding mangrove management with the involvement of both the government and the community, and conducting community-based mangrove conservation with government participation.
Keyword: Pulau Pari, Pari Island, ekosistem mangrove, pengelolaan, strategi, management, mangrove ecosystem, strategy

Judul: Construction of Strongly Optimal Binary Linear Code with Minimum Distance 9 and 11
Abstrak: A binary linear code of length n over q F is a subspace of n q F . A code has three parameters that attached to it, namely length, dimension, and minimum distance. A code with length n, dimension k and minimum distance d is often called [n, k, d ]-code. Usually, when two parameters are given, then we want to find a code that has the best value for the last parameter. Based on Gilbert- Varshamov bound, if a [n, k, d ]-code exists and can not be expanded, we call it a strongly optimal code. In this paper, we construct strongly optimal code with minimum distance 9 and 11. In constructing the code, we created a theorem and algorithm based on Gilbert-Varshamov bound before we implement the algorithm to MAPLE programming language. Because of computational limitations, the program can only construct up to k = 10 for d = 9 and k = 12 for d = 11.
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