Judul: Nisbah Akar – Pucuk Biomassa dan Massa Karbon Pohon Di Areal IUPHHK-HA PT. Suka Jaya Makmur, Ketapang, Provinsi Kalimantan Barat
Abstrak: Root to shoot ratio (R/S Ratio) of dominant tree biomass in tropical rain forests (especially IUPHHK-HA PT. Suka Jaya Makmur West Kalimantan) is as follows: (a) R/S root biomass with the main stem biomass ranged between 0.1743 to 0.4828 with an average value of 0.3006. (b) R/S root biomass to above-ground tree biomass (trunks, branches, twigs, and leaves) ranged from 0.1376 to 0.3983 with an average value of 0.2475. Root to shoot ratio (R/S ratio) of carbon mass of the dominant trees are as follows: (a) R/S carbon mass of roots with carbon mass of the main stem ranged from 0.1724 to 0.4593 with an average value of 0.3. (b) R/S carbon mass of tree roots with carbon mass of above the ground ranged from 0.1361 to 0.3951 with an average value of 0.2496. The average value of biomass expansion factors (BEF) of above ground and total of tree is 1.2392 and 1,5398. The average tree carbon mass expansion factor of above ground and total tree is 1.2304 and 1,5305 (Based on data from the dominant trees in IUPHHK-HA PT. Suka Jaya Makmur West Kalimantan).
Keyword: BEF., Root to Shoot Ratio, Carbon Mass, Biomass

Judul: Root to Shoot Ratio Biomassa dan Massa Karbon Pohon Jati (Tectona grandis L. f.) di KPH Balapulang, Perum Perhutani Unit I, Jawa Tengah.
Abstrak: Climate change, that is marked by improvement of earth’s surface temperature (global warming), is caused by human activities that increase the emmision of greenhouse gasses to the atmosphere. These gasses includes carbondioxide (CO2), nitrous oxide (N2O), methane (CH4), sulphurous hexafluoride (SF6), perfluorocarbons (PFCs), and hydrofluorocarbons (HFCs). Ignition of hydrocarbonic compounds such as fossil fuels (coal, petrol fuel, and natural gas) or biomass (wood) are human activity that could cause emmision of greenhouse gasses to the atmosphere and, further, global climate change. This research objective is to observe biomass and carbon mass root to shoot ratio of teak (Tectona grandis L. f). Observation was done to 30 samples of teak, consisting of 6 tree samples in each age group of 1 to 5 year old tree. Then, calculation of biomass and carbon mass of root, stem, branch, twig and leaf is done to each sample. Biomass root to shoot ratio of each samples were analyzed by comparing root biomass value to biomass main stem value, then recompares root biomass value to total surface (stem, branch, twig, and leaves) biomass. Carbon mass root to shoot ratio were calculated by dividing root carbon mass to main stem carbon mass, which then recalculated by dividing root carbon mass to surface carbon mass. Further, expansion factors are analyzed by comparing biomass and carbon value of surface section to main stem section of samples. Biomass root to shoot ratio based on main stem is about 0,1155-0,5048 (Average 0,2296), while based to surface biomass is about 0,1090-0,4317 (Average 0,1983). Carbon mass root to shoot ratio based on main stem is about 0,1159-0,5068 (Average 0,2320), while based to surface carbon mass is about 0,1111-0,4381 (Average 0,2030). Average expansion factor of biomass for age level I-V is 1.15, while average expansion factor of carbon mass for age level I-V is 1,13. Biomass root to shoot ratio and mass carbon root to shoot ratio is comparison biomass or mass carbon root value to biomass or carbon mass of the suface (stems branche, twig and leave). Biomass expansion factor or mass carbon expansion factors is the ratio of biomass or mass carbon whole parts of carbon tree to biomass or mass carbon on the stem.
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Judul: Trichomonas Gallinae Penyebab Trichomonosis Pada Unggas
Abstrak: Trichomonas gallinae adalah protozoa yang bergerak aktof dengan keempat flagella yang mempunyai layar dan pada salah satu sisinya terdapat membran seperti sirip ikan yang berombak. Spesies dari genus Trichomonas ini mempunyai arti penting pada unggas, karena dapat menyebabkan infeksi pada alat pencernaan bagian atas.
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