Judul: Kerusakan tegakan tinggal dan keterbukaan areal akibat penebangan dan penyaradan : Magang sebagai supervisor pengawas petak tebangan di HPH PT Diamond Raya Timber, Propinsi Riau
Abstrak: Pelaksanaan pengelolaan hutan lestari (PHL) atau Sustainable Forest Management (SFM) harus diterapkan oleh pemegang konsesi Hak Pengusahaan Hutan (HPH) dengan tujuan menjaga kelestarian hutan dan mengurangi dampak terhadap lingkungan di sekitar hutan. Sesuai dengan prinsip dan kriteria dari Forest Stewardship Council (FSC) mengenai dampak lingkungan, pengawasan dan penilaian terhadap kegiatan pemanenan mutlak diterapkan yang salah satunya adalah kerusakan tegakan tinggal dan keterbukaan areal akibat penebangan dan penyaradan. Tujuan umum magang adalah melatih kemampuan berpikir mahasiswa dalam bertindak positif dan kritis terhadap permasalahan yang dijumpai di lapangan dan belajar mengerjakan pekerjaan pengawasan kegiatan penebangan dan penyaradan kayu. Sedangkan tujuan khusus adalah mengetahui kerusakan tegakan tinggal dan keterbukaan areal akibat kegiatan penebangan dan penyaradan. Areal Unit Manajemen Hutan (UMH) PT. Diamond Raya Timber (DRT) berbatasan pada sebelah Utara dan Timur dengan Selat Malaka, Selatan dengan PT. Riau Tanah Putih dan Barat dengan Sungai Rokan. Secara geografis areal UMH PT. DRT terletak pada 100°50' - 101°13' BT dan 01°45'- 02°18' LS dan secara administratif pemerintahan terletak di Kabupaten Rokan Hilir, Propinsi Riau, di bawah wilayah pengelolaan Dinas Kehutanan dan Perkebunan Kabupaten Rokan Hilir dan Dinas Kehutanan Propinsi Riau. Luas Total areal PT. DRT adalah sebesar 90.956 ha dengan topografi terdiri atas dataran rendah pantai dengan ketinggian 28 meter dari permukaan laut (mdpl) yang pada umumnya merupakan daerah lahan basah dengan kelerengan di bawah 8%. Tanah yang dominan adalah tanah gambut ombrogen, dimana penggenangan air berasal dari air hujan yang miskin hara. Terdapat sedikit tanah gley, aluvial dan podzolik di bagian Utara dan Timur yang merupakan habitat hutan mangrove. Formasi geologi areal hutan terdiri atas sedimen aluvial tersier dan kwarter. Curah hujan rata-rata adalah 2.358 mm/th dengan kisaran 51 mm pada bulan Maret sampai 302 mm di bulan November. Suhu berkisar antara 25°-27° C dengan kelembaban nisbi berkisar antara 79-90%. ...
Keyword: 

Judul: Kerusakan Tegakan Tinggal Akibat Pemanenan Kayu di PT. Diamond Raya Timber, Provinsi Riau
Abstrak: In the activities of the utilization of the peat swamp forests, not separated in the harvesting of the forest activities. As for the impact of harvesting activities which could result in damage to the forest was living that threaten the sustainability of the forest. Although timber harvesting is carried out carefully, damage the difficult lives residual stands are avoided. Residual stand damage to the forest lived is happening on the part of the forest which is actually not included in plans for harvested at the time of harvesting is done. This research aims to quantify residual stand damage caused by wood harvesting in peat swamp forest. The method of the research is to measure the stand damage after felling and skidding operation at 6 sample plot which 1 hectare in each plot. The percentage and the level of tree damage were calculated through comparing the number of tree damage after logging with the number of tree before logging. The result of the study showed that the type of damage was crown damage, bark injury, buttress root damage, broken stem and fell. Residual stand damage caused by harvesting in Diamond Raya Timber forest company include medium damage, it was 41,14%. The percentage of stand damage caused by felling was 20,61% and the percentage of stand damage caused by skidding was 20,53%.
Keyword: 

Judul: Deteksi Keberadaan Antibodi Anti-Escherichia coli di Dalam Serum Sapi Neonatus yang Diberi Kolostrum dengan Metode Enzyme-Linked Immunosorbent Assay (ELISA)
Abstrak: The aim of this research is to study the present of antibody against E. coli in the sera of neonates calf which given colostrum and challenged by enterotoxigenic Escherichia coli (ETEC) K99. Eleven neonates calves were clinically healthy kept since birth until the age of one week.This neonates calves are divided into two groups, first group is colostrums group (8 calves) and the other is non-colostrum group (3 calves). Colostrum group were given colostrum on age 0-72 hours with 12 hours interval, whereas non-colostrum group are given cow milk at the same time. Each group were challenge by ETEC K99 5X1010 CFU emulsion it in alhydrogel peroral at the 12 hours of age. Blood sample were taken from jugularis vein on age 0th, 12th, 24th, 48th, 72th, and 168th hours. The present of antibody in the sera detecting by indirect ELISA (Enzyme-Linked Immunosorbent Assay Method). The result showed of the highest concentration of antibody in the sera at 24 hours of age for colostrums group, whereas no antibody against E. coli were detected for non-colostrums group . Based on the results, we concluded the concentration of antibody in colostrum can detection at 24 hours until one week after given colostrum. The highest concentration of antibody anti- E. coli in 24 hours after given colostrum.
Keyword: colostrum, neonates calf, antibody anti-E. coli, sapi neonatus, Kolostrum,