Judul: Struktur Komunitas Makrozoobentos dan Keterkaitannya dengan Kualitas Air di Perairan Teluk Banten
Abstrak: Tingginya aktivitas antropogenik di kawasan pesisir Teluk Banten berpotensi menurunkan kualitas perairan akibat masuknya bahan-bahan organik dan anorganik. Penurunan kualitas air tersebut akan berdampak terhadap kehidupan biota, salah satunya makrozoobentos. Penelitian ini bertujuan menganalisis struktur komunitas makrozoobentos dan keterkaitannya dengan kualitas air di Teluk Banten. Penelitian dilakukan selama enam bulan, sejak bulan September 2022 hingga Februari 2023 dengan enam titik stasiun pengamatan. Metode yang digunakan terdiri dari analisis kualitas air secara insitu dan eksitu berupa sampel makrozoobentos yang diambil menggunakan Ekman Grab, parameter kualitas air, dan substrat. Analisis data yang dilakukan terdiri dari kepadatan, keanekaragaman, keseragaman, dominansi, tipe substrat, analisis similaritas, dan analisis komponen utama. Makrozoobenthos yang diperoleh terdiri dari enam kelas, yaitu Bivalvia, Gastropoda, Polychaeta, Scapopoda, Malacostraca, dan Echinoidea. Kepadatan makrozoobentos tertinggi pada musim kemarau di bulan September. Indeks keanekaragaman yang diperoleh terkategori tinggi dengan keseragaman dan dominansi yang rendah. Kualitas air yang paling berpengaruh bagi makrozoobentos di Teluk Banten, yaitu DO dan suhu., The high anthropogenic activities in the coastal area of Banten Bay have potential to reduce water quality due to the load of organic and inorganic materials. The decrease in water quality will have an impact on biota life, one of which is macrozoobenthos. This study aims to analyze the structure of the macrozoobentos community and its relationship with water quality in Banten Bay. The study was conducted for six months, from September 2022 to February 2023 with six observation stations. The method used consists of in situ and ex situ water quality analysis in the form of macrozoobenthos samples taken usingEkman Grab, water quality parameters, and substrate. The data analysis carried out consisted of density, diversity, uniformity, dominance, substrate type, similarity analysis, and principal component analysis. The macrozoobenthos obtained consist of six classes, namely Bivalves, Gastropods, Polychaeta, Scapopoda, Malacostraca, and Echinoidea. The density of macrozoobenthos was highest at dry season in September. The diversity index is categorized as high with low uniformity and dominance. The most influential water quality for macrozoobentos in Banten Bay is DO and temperature.
Keyword: makrozoobentos di Teluk Banten, kualitas air, struktur komunitas, Teluk Banten

Judul: Zooplankton Community Structure in Banten Bay to Describe the Health of the Aquatic Environment
Abstrak: Perairan Teluk Banten merupakan wilayah perairan yang dipengaruhi oleh berbagai aktivitas seperti kegiatan industri maupun berbagai aktivitas manusia sehingga dapat dikhawatirkan dapat menyebabkan penurunan kondisi perairan serta perubahan komposisi dan kelimpahan zooplankton. Penelitian ini bertujuan untuk menganalisis kondisi perairan Teluk Banten berdasarkan struktur komunitas zooplankton untuk menggambarkan kesehatan lingkungan perairan. Pengambilan contoh dilaksanakan pada bulan Oktober hingga Desember 2021, meliputi19 stasiun di muara Sungai Berung, muara Sungai Cibanten, muara Sungai Pamong, serta 16 stasiun di perairan laut. Parameter kualitas air yang diukur meliputi suhu, salinitas, kecerahan, dan klorofil-a. Analisis data meliputi kelimpahan zooplankton, indeks keanekaragaman, keseragaman, dan dominansi. Sebaran kelimpahan zooplankton dianalisis menggunakan Surfer 16 (Golden Software). Hubungan klorofil-a dan zooplankton dianalisis menggunakan regresi linear. Zooplankton yang ditemukan selama penelitian terdiri dari 29 genera dan 1 stadia. Zooplankton didominasi oleh Copepoda dan organisme yang mendominasi secara keseluruhan adalah krustasea Nauplius stadia. Kelimpahan zooplankton di perairan Teluk Banten berkisar 13,47–305,09 ind/L. Persebaran zooplankton lebih tinggi di area dekat pantai dan semakin rendah ke arah sisi luar teluk. Struktur komunitas zooplankton memiliki keanekaragaman rendah, keseragaman besar, dan dominansi rendah-sedang. Kelimpahan zooplankton berkorelasi signifikan dengan klorofil-a., Banten Bay is estuary that are affected by various human activities such as industrial and non-industrial activities, which can cause concerns about the decline in water quality conditions and changes in the composition and abundance of zooplankton. This research aims to analyze estuary conditions based on the structure of the zooplankton community to describe the health of the aquatic environment. Sampling and measurements were carried out from October to December 2021 at 19 stations, including the river mouth of Berung River, Cibanten River, Pamong River, and 16 other sea sites stations. Water quality parameters measured include temperature, salinity, water clarity, and chlorophyll-a. Data analysis includes zooplankton species abundance, diversity index, uniformity and dominance. The distribution of zooplankton abundance was analyzed using Surfer 16 (Golden Software). The relationship between chlorophyll-a and zooplankton was analyzed using linear regression. The zooplankton found during the research consisted of 29 genera and 1 stage. Zooplankton community was dominated by Copepods and the Nauplius of Crustacea dominates overall community. The abundance of zooplankton in the Banten Bay ranges from 13.47–305.09 ind/L. The distribution of zooplankton near the coast tends to be higher and lower towards outer side of the bay. The zooplankton community structure has low diversity, great uniformity, and low - medium dominance. The relationship between chlorophyll-a and zooplankton shows that zooplankton abundance can be influenced by chlorophyll-a.
Keyword: zooplankton, abundance, structure community, Banten Bay

Judul: Konstruksi Hukum Grup Kurva Eliptik Atas F3m
Abstrak: Elliptic curves upon F3m can be divided in two cases, i.e. supersingular and nonsupersingular case. Based on group laws on elliptic curves, a new arithmetic upon F3m can be formulated as an addition process of two random points on the curve. This addition process can then be applied to the ElGamal algorithm.
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