Judul: Akurasi Pendugaan Biomassa Pohon Pinus Berdasarkan Konversi Volume Pohon di Hutan Pendidikan Gunung Walat
Abstrak: Metode alternatif untuk pendugaan biomassa pohon konversi volume pohon menjadi biomassa dengan menggunakan koreksi volume silinder, kepadatan kayu, dan Faktor Ekspansi Biomassa (BEF). Metode ini umumnya digunakan ketika model biomassa alometrik yang sesuai tidak tersedia. Penelitian ini bertujuan untuk mengetahui faktor bentuk, kerapatan kayu, dan BEF pohon pinus serta menganalisis keakuratannya dalam pendugaan biomassa pohon pinus dengan menggunakan konversi volume pohon. Penelitian ini menggunakan pengambilan sampel destruktif 11 sampel pohon pinus di kawasan rehabilitasi di Hutan Pendidikan Gunung Walat (HPGW). Pohon contoh dianalisis untuk menentukan volume batang, faktor bentuk, kerapatan kayu, dan total biomassa pohon. Untuk setiap pohon contoh, biomassa pohon dihitung dengan menggunakan konversi volume yang menggunakan berbagai kombinasi faktor bentuk, tinggi pohon, kerapatan kayu, dan nilai BEF. Estimasi biomassa ini kemudian dibandingkan dengan biomassa pohon aktual yang diperoleh dari pengambilan sampel destruktif. Hasil penelitian menunjukkan bahwa konversi volume menggunakan kombinasi antara tinggi pohon hingga diameter terkecil (Td), faktor bentuk absolut (fa), kerapatan kayu dari bor riap (KKb), dan referensi Nilai BEF (BEFp) memberikan estimasi biomassa pohon yang paling akurat. Dengan demikian, metode konversi volume dengan variabelvariabel tersebut dapat digunakan sebagai alternatif pendugaan biomassa pohon, khususnya di kawasan habilitasi HPGW.
Keyword: angka bentuk, biomassa, kerapatan kayu, pinus, tingkat ketelitian

Judul: Perbandingan Ketelitian Metode Pendugaan Biomassa Pinus dan Agathis di Areal Rehabilitasi Hutan Pendidikan Gunung Walat.
Abstrak: An alternative method for estimating biomass is converting tree volume into aboveground tree biomass by using wood density and biomass expansion factor (BEF). This method is commonly used in estimating a tree biomass, especially when allometric biomass models are not available. The objective of this study was to analyze the precision of biomass estimation using the conversion of tree volume for estimating tree-level and stand-level biomass in the rehabilitation area of Gunung Walat University Forest (HPGW). Tree biomass was calculated using three methods, i.e. allometric models, tree volume conversion using a general wood density, and tree volume conversion using a specific wood density. The results showed that generally the volume conversion method using a spescific wood density produced relatively similar biomass estimates to the allometric method. Thus, the volume conversion method using a specific wood density can be used as an alternative method for estimating stand biomass, especially in the rehabilitation area of HPGW.
Keyword: pine, agathis, biomass, volume conversion, precision

Judul: Sarcosporidiasis in slaughter animals
Abstrak: Sarcocystis which belong to the generally occuring parasites for they are found almost all over the countries of the world. Infection of Sarcocystis usually throught inges- tion of feces or flesh of infected animals. The pathogenesis of Sarcosporidiasis is considered as benign but when the Sarcocystis die in a host, sarcocystin or sarcosporidin is liberated thereby which lead to condemnation of meat in the abattoir. Besides condemnation of meat, Sarcocystis also causes: loss of appetite, anemia, lameness, weakness in the lion, diarrhea, fever, pyrexia, paralysis, emaciation, neuro logical disturbances, etc. " Amprolium "at the rate of 100 mg/Kg body weight per day has been practiced for prevention or to minimize Sarco- sporidiasis. Treatment must be started during incubation period. Shedding of Sarcocystis sporocysts in the feces of carnivores is the key factor in the spread of Sarcocystis infection. Therefore, control efforts must be based primarily on measures designed to break the cycle of Sarcocystis.
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