Judul: Pilihan strategi pengelolaan hutan gambut tropika dalam kerangka skema perdagangan karbon
Abstrak: Tropical natural forest was important agent in global climate change mitigation through absorption and storage of carbon in form of biomass. One of forest ecosystem type that has potential to absorb and store carbon was tropical peat forest. Measurement and calculation total carbon stocks in soil and vegetation of tropical peat forest must be done accurately to anticipate carbon trading. The objective of the study was to estimate total carbon stocks in soil and vegetation, to identify forest carbon stock changes, to analyse carbon economic value, and to describe strategic options of peat forest management. The study found that biomass and carbon stocks in the soil was 8 times higher than in the vegetation in primary forest condition, and 10 times in logged over forest and secondary forest condition. Carbon stocks in vegetation and soil were 189.45 ton C/ha and 1537.37 ton C/ha in primary forest, 161.76 ton C/ha, and 1713.77 ton C/ha in logged over area, 139.05 ton C/ha and 1486.39 ton C/ha in secondary forest, and 43.09 ton C/ha and 1205.59 ton C/ha in degraded forest. Option of degraded forest conversion to plantation forest can improve above carbon stock, provide profitability from both timber sale and carbon trade, give forward and backward linkages, and increase national and regional economic growth. Option of no conversion but conserve the natural forest can maintain forest carbon stock and provide profitability from carbon trade. This option potencially might decrease forward and backward linkages and regional economic growth. Option of no conversion but manage the natural forest for timber and carbon with sustainable forest management (SFM) by applying RIL techniques and reducing felling intencity can progressively increase forest carbon stock, provide profitability from both timber sale and carbon trade, give forward and backward linkages, and increase regional economic growth.
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Judul: Modeling the Dynamics of Aboveground Carbon  Stocks in Peat Swamp Forest in Riau Province
Abstrak: Pemanasan global merupakan ancaman nyata bagi pembangunan berkelanjutan. Ekosistem Gambut merupakan salah satu ekosistem yang paling rentan dan sebagai sumber emisi yang besar apabila tidak dikelola dengan baik. Dalam mengantisipasi perubahan iklim, perlu dilakukan penghitungan kandungan biomassa dan stok karbon hutan rawa gambut secara akurat. Penelitian ini bertujuan untuk membangun model dengan menyusun beberapa skenario sehingga memberikan rekomendasi terbaik dalam pengelolaan hutan rawa gambut bekas tebangan di PT. Diamond Raya Timber, Kabupaten Rokan Hilir, Riau. Metode yang digunakan adalah metode deskriptif berdasarkan pendekatan system dinamik. Model simulasi menggunakan software Stella 9.0.2 dengan memasukkan persamaan ingrowth, upgrowth, dan mortality tegakan hutan dengan kelas diameter 10– 19.9 cm, 20–29.9 cm, 30–39.9 cm, 40–49.9 cm, 50–59.9 cm, dan 60 cm up. Hasil penelitian menunjukkan bahwa struktur tegakan hutan bekas tebangan mengalami penurunan jumlah pohon dan stok karbon setiap tahunnya akibat tingginya angka kematian pada setiap kelas diameter. Hasil simulasi menunjukkan bahwa siklus 40 tahun dengan intensitas tebang 25% pada rotasi ketiga jumlah stok karbon meningkat sebesar 73.91 ton/ha dan menghasilkan stok karbon yang lebih besar dibandingkan siklus lainnya. Intensitas tebang berkorelasi negatif dengan stok karbon karena semakin tinggi intensitas tebang, maka semakin rendah stok karbon tegakan tinggal. Penyimpanan stok karbon tegakan akan meningkat setiap tahun dan menurun lagi ketika penebangan dilakukan., Global warming is a real threat to sustainable development. Peat swamp forest is one of the most vulnerable ecosystem and resported as the biggest source of emissions if not sustainably managed. In anticipating climate change, it is necessary to accurately calculate the biomass and carbon stocks of peat swamp forests. This study aims to build a model by compiling several scenarios to provide the best recommendations for managing logged-over peat swamp forest at PT. Diamond Raya Timber, Rokan Hilir Regency, Riau. The method used a System Dynamics approach. The model and simulation use Stella 9.0.2 incorporating ingrowth, upgrowth, and mortality equations of the forest stands with diameter classes of 10–19.9 cm, 20–29.9 cm, 30–39.9 cm, 40–49.9 cm, 50–59.9 cm, and 60 cm up. The results showed that the stand structure of logged-over peat swamp forests decreased the number of trees and carbon stocks each year due to the high mortality rate in each diameter class. The simulation results show that a 40-year cycle with a cutting intensity of 25% in the third rotation increases the carbon stock by 73.91 tons/ha and produces a larger carbon stock than the other cycles. Cutting intensity negatively correlates with carbon stock because the higher the cutting intensity, the lower the carbon stock of the remaining trees. Standing carbon storage will increase every year and decrease again when logging is carried out.
Keyword: Dinamika Tegakan, stok karbon, siklus dan intensitas tebang, model simulasi, sistem TPTI

Judul: Infeksi Virus Parainfluenza Pada Anjing
Abstrak: Virus parainfluenza anjing termasuk famili Paramyxoviridae, berbentuk pleomorf dengan ukuran bervariasi (bergaris tengah antara 100-500 nm), berpembungkus peka ether, berisi genom RNA dan secara serologis mempunyai kesamaan dengan virus SV-5 kera; dikenak sebagai salah satu kausa penting dari sindrom "kennel cough". Infeksinya dapat mengenai anjing semua umur yang belum pernah terinfeksi atau mendapatkan vaksinasi mengakibatkan gejala klinis ringan yang terbatas pada traktus respirasi atu infeksi yang secara klinis tidak memperlihatkan gejala nyata. Gejala klinis yang nampak setelah masa inkubasi (1-5 hari) terlewati berupa batuk yang tidak berat selama beberapa hari, berbagai tingkat tonsilitis dan pharyngitis dan kadang-kadang ditemukan kenaikan temperatur rektal antara 1-2 derajat C dari temperatur normal rat-rata. Anjing terinfeksi mengandung virus pada traktus respirasi bagian atas dan bawah serta limfonoduli sampai hari ke 9 setelah infeksi. Penyebaran virus antar anjing terjadi secara aerogen.
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