Judul: Vegetation Diversity and Biomass of Certain Types of Peatland Use In Kepulauan Meranti Regency, Riau. Under academic
Abstrak: The purpose of this study was to assess the diversity of vegetation and biomass on the three different peat land use types; natural forests, gardens, and industrial forest plantation of sago areas (HTI sago). The results showed that the composition of plant species for three growth rates, saplings, pole, and trees stages, ware different among three different peat land use types. The dominant species in natural forests were Shorea parvifolia, Shorea uliginosa, Baccaurea bracteata and Palaquium rostratum. In gardens, the dominant species are Metroxylon spp., Artocarpus sp., Palaquium ridleyi, and Alstonia spatulata Blume.; while in HTI sago areas, including Metroxylon spp, the presence of other species of forest vegetation were Ficus microcarpa, Combretocarpus rotundatus, Baccaurea bracteata and Palaquium rostratum. The higher diversity index of three different growth rates; saplings (2.75), pole (2.99) and trees (3.15) respectively, were only found in the natural forest. On the contrary, the lower diversity index of sapling stage (1.95) was in gardens and both the pole (0.77) and tree (0.44) were belonged to the HTI sago. Potential biomass of pole stages figured out the higher and the lower value were 359,01 ton ha-1 in HTI sago, 159,75 ton ha-1 in gardens and 67,79 ton ha-1 in natural forest, respectively. This trend also occurred nearly equal to the higher stages of trees and a lower value were 209.20 ton ha-1 in HTI sago, but the natural forest 161.13 ton ha-1 higher than the gardens, 107.22 ton ha-1, respectively.
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Judul: Pendugaan Potensi Biomassa Hutan di Areal IUPHHK-HA PT. Diamond Raya Timber, Dumai, Provinsi Riau
Abstrak: Forest has an important role in absorbing CO2 which used in the process of photosynthesis to produce O2 and most of the produced energy is in the form of biomass. One type of forest that has biomass storage is peat swamp forest. The purpose of this study is to calculate the potential and the distribution of biomass in the area of peat swamp forest. The results of the study showed that forest biomass on 90 956 ha area are 17 297 664 tons. Distribution of natural peat forest biomass in this area is classified into four classes, they are low grade that has biomass potential less than 215.56 tons/ha, medium grade that has biomass potential between 215.56 to 319.86 tons/ha, high grade that has biomass potential between 319.86 to 486.53 tons/ha, and very high grade that has biomass potential more than 486.53 tons/ha. The spread of peat swamp forest consist of in low grade peat 61 100 ha with 10 387 000 tons biomass, in medium grade 17 600 ha with 4 595 888 tons biomass, in high grade 5 800 ha with 2 195 880 tons biomass and very high grade 200 ha with 118 896 tons biomass
Keyword: peat swamp forest, distribution of biomass, biomass

Judul: Infeksi Cacing Jantung Dirofilaria Immitis, Railliet & Henry, 1911 Pada Anjing
Abstrak: Cacing Dirofilaria immitis dewasa yang tinggal dalm ventrikel kanan jantung anjing, sering kali menimbulkan gejala klinis yang cukup berat. Cacing Tersebut menghasilkan mikrofilaria yang selanjutnya berkembang menjadi larva infektif dalam saluran malphigi induk semang entara, yaitu nyamuk dari genus Culex, Aedes dan Anopheles.
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