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: The Leukocyte Profile of Pregnant Friesian Holstein Cows vaccinated with Escherichia coli K99 polivalen vaccine.
Abstrak: The objective of this experiment was to study the leukocyte profile of pregnant cows vaccinated with E.coli K99 polivalen vaccine. Three pregnant Friesian Holsteins cows were used in this experiment. Before the administration of vaccine, the cows were given a series of immunomodulator injection for three days. The vaccinations were administered three times at 8, 6, and 4 weeks before calving. Blood were drawn through jugular vein, first before the administration of vaccines, then weekly until calving. Based on the observation, it can be concluded that the administration of E.coli K99 polivalen vaccine in pregnant cows not affected the leukocyte profile. Keywords : Escherichia coli vaccine, leukocyte profile, differential leukocyte
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