Judul: Keanekaragaman dan KeIimpahan Komunitas Makrozoobenthos pada Hutan Mangrove Hasil Rehabilitasi di Taman Hutan Raya Ngurah Rai, Bali
Abstrak: Saat ini luas mangrove telah mengalami degradasi karena berbagai sebab dan permasalahan yang dihadapinya. Degradasi hutan mangrove Indonesia terjadi akibat pemanfaatan yang kurang tepat atau mengalami perubahan fungsi, misalnya menjadi areal pertambakan udang. Hal tersebut terjadi karena pada beberapa dekade ini, pemanfaatan mangrove terus meningkat bukan saja dari segi pemanfaatan lahannya saja tetapi juga dari segi pemanfaatan kayu, baik seeara tradisional maupun komersial. Pengaruh yang ditimbulkannya sangat luas apabiJa ditinjau dari aspek sosial, ekonomi, dan ekologi.
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Judul: Macrozoobenthic Community Structure in the Mangrove Rehabilitation Area of PLTU Banten 3 Lontar Kemiri District Tangerang Regency
Abstrak: PLTU Banten 3 Lontar membuat program rehabilitasi kawasan pesisir dengan melakukan penanaman mangrove. Makrozoobentos dapat dijadikan indikator keberhasilan ekosistem mangrove. Penelitian ini bertujuan menganalisis korelasi struktur komunitas makrozoobentos dengan waktu penanaman mangrove. Penelitian dilakukan di kawasan rehabilitasi mangrove PLTU Banten 3 Lontar pada bulan Januari sampai Februari 2020. Penentuan stasiun secara purposive sampling berdasarkan usia mangrove. Hasil makrozoobentos yang diperoleh menunjukkan nilai kepadatan rendah, nilai keanekaragaman rendah dengan nilai di bawah 1. Hasil rehabilitasi mangrove yang lebih lama usianya memiliki nilai kepadatan, keanekaragaman, dan kesergaman lebih tinggi dibandingkan dengan mangrove rehabilitasi yang baru. Tekstur substrat liat berpasir, nilai suhu dengan rata-rata 34,2 °C, nilai Dissolved Oxygen dengan rata-rata 4,77 mg/l. Nilai salinitas dengan rata-rata 22,7 %, nilai pH rata-rata 7,38 dan nilai Biochemical Oxygen Demand rata-rata 4,01 mg/l. Nilai koefisien kontingensi sebesar 0,62 menunjukkan adanya hubungan antara makrozoobentos dengan usia mangrove., PLTU Banten 3 Lontar made a rehabilitation program for coastal areas by planting mangroves. Macrozoobenthos can be used as an indicator of the success of mangrove ecosystem. This study aims to analyze the correlation between macrozoobenthic community structure and mangrove planting time. The research was conducted in the mangrove rehabilitation area of PLTU Banten 3 Lontar from January to February 2020. Determination of stations by purposive sampling based on mangrove age. Result showed that there was higher diversity, and eveness compared to the newly rehabilitated mangroves. The texture of the clay substrate is sandy, temperature values range from 34.2 °C, Dissolved Oxygen values with an average of 4.77 mg/l. The salinity value was around 22.7 %, the average pH value was 7.38 and the Biochemical Oxygen Demand value was around 4.01 mg/l. The contingency coefficient value is 0.62 indicating a relationship between macrozoobenthos and mangrove age.
Keyword: makrozoobenthos, mangrove, PLTU Banten 3 Lontar

Judul: Evaluation of Influenza Antibody Titers in Serum and Egg Yolk of Layers Vaccinated with Influenza Vaccines.
Abstrak: Influenza belongs to the Orthomyxoviridae family which causes upper and lower respiratory tract infection. The aim of this study was to evaluate influenza-A specific antibody titers from serum and egg yolk of hens vaccinated with quadrivalent influenza vaccines. Three Hy-line Brown layers were vaccinated with quadrivalent influenza type A and B inactivated vaccines. Vaccination was carried out three times at a dose of 0.25 ml/chicken via the intramuscular route. The first vaccination was carried out at 24 weeks of age, then boosters were performed at 28 and 32 weeks of age. Serum and egg yolk were collected every week for 20 weeks since the first vaccination. Influenza A H3N2 and H1N1 antibody titers were determined using hemagglutination-inhibition (HI) test and agar-gel-precipitation (AGP) test. Influenza-A H3N2 and H1N1 specific antibodies were detected in both serum and egg yolk from the first to twenty weeks after the initial vaccination. Highest HI geometric mean titer (GMT) of H1N1 antibody reached 26.67 HIU at nine weeks post first vaccination (p.f.v), while H3N2 antibody reached 26 HIU at six weeks p.f.v. Our result showed that influenza antibodies can be produced in layers using quadrivalent vaccines and layer chickens are able to produce equivalent antibody levels for each influenza subtype.
Keyword: antibody, egg yolk, influenza, layer chickens, serum