Judul: Analysing of Tree Carbon Stock on Green Open Space Area in The Upstream of Kali Bekasi Watershed
Abstrak: The upstream of Kali Bekasi watershed condition plays an important role on the management of Kali Bekasi watershed, Jakarta and Bogor District. The presence of vegetation cover in sufficient area in the Permanent Green Open Space of upstream of Kali Bekasi watershed is crucial in maintaining environmental quality. CO2 sequestration by the presence of vegetation in a landscape is substantial mitigation of climate change. It creates a low carbon society that is needed to get appreciation in environmental services. The objective of study was to analyze structure and species diveristy of stands, to analyze changes of the permanent green open space in upstream of Kali Bekasi watershed, its carbon stocks and their correlation. Observation plots amounting to 161 plots were established in the study site, which were laid out on the upstream of watershed, representing upper, middle and lower parts of the site. Estimation of carbon stocks was calculated by using non-destructive sampling method, using the existing allometric equations. The results of vegetation analysis showed that the level of Shannon-index was low until medium, 0,63 and 3,36 respectively. These species were identified to have high carbon sinks, which is potential to increase carbon stocks and biodiversity conservation. Stand structure in the agroforestry system in the upstream of Kali Bekasi watershed was found closely to natural forest structure. The upstream of Kali Bekasi watershed has 1,63x106 tons carbon stock total equivalent 5,97x106 tons of CO2 uptake. Green open space in a private area (mix-garden, home garden, bamboo garden) most contributed to the total carbon stocks although the average carbon stock was lower than in pine forest and natural forest. The changes in permanent green open space area have the greatest influence on total carbon stocks. Carbon stocks were highly related to the basal areas, but stand density and species diversity has lower correlation to carbon stocks.
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Judul: Carbon Stock Potential of Two Urban Forests in Special Capital District of Jakarta
Abstrak: Hutan kota sebagai ruang terbuka hijau di kawasan perkotaan berperan penting dalam upaya mitigasi perubahan iklim. Penelitian bertujuan untuk mengidentifikasi, mendeskripsikan, dan menganalisis keanekaragaman jenis, serta mengukur potensi cadangan karbon dari vegetasi di dua kawasan hutan kota DKI Jakarta, yaitu Hutan Kota Sangga Buana dan Hutan Kota Sukapura. Perhitungan cadangan karbon menggunakan metode non-destruktif dengan rumus alometrik, serta dilakukan perhitungan nekromassa pada pohon mati dan serasah lantai hutan. Hasil penelitian menunjukkan perbedaan komposisi tegakan pada masing-masing lokasi, dengan adanya jenis yang mendominasi di setiap lokasi yaitu Sukun (Artocarpus altilis) di Hutan Kota Sangga Buana dan Mahoni (Swietenia macrophylla) di Hutan Kota Sukapura. Cadangan karbon di Hutan Kota Sangga Buana tergolong tinggi dengan nilai 124,56 ton C/ha dengan kemampuan serapan CO2 sebesar 457,13 ton CO2/ha. Cadangan karbon Hutan Kota Sukapura tergolong sedang dengan nilai 71,79 ton C/ha dengan kemampuan serapan CO2 sebesar 263,46 ton CO2/ha., Urban forest as part of green open space in urban space plays an important role in climate change mitigation. The purpose of this study is to identify, describe, and analyze the composition of two different urban forest stand and to measure the carbon stock potential of two different urban forests in Jakarta: Sangga Buana Urban Forest and Sukapura Urban Forest. Measurement of carbon stock is done using non-destructive method with allometric equation, along with necromass estimation from dead trees and tree litters. Result shows difference in composition between the two locations, whereas Breadfruit (Artocarpus altilis) is found to be the dominant species in Sangga Buana Urban Forest, and Mahogany (Swietenia macrophylla) is dominant in Sukapura Urban Forest. Sangga Buana Urban Forest shows high level of carbon stock potential with 124,56 ton C/ha and CO2 sequestration of 457,13 ton CO2/ha. Sukapura Urban Forest shows medium level of carbon stock potential with 71,79 ton C/ha and CO2 sequestration of 263,46 ton CO2/ha.
Keyword: alometrik, emisi, perubahan iklim, ruang terbuka hijau, sekuestrasi

Judul: Infeksin virus rota pada anak babi
Abstrak: Virus Rota sudah lama diduga sebagai salah satu penyebab diare pada anak babi yang baru dilahirkan. Hal ini diperkuat dengan berhasilnya Mebus dan kawan-kawan mengidentifikasi virus Rota pada kejadian diare yang ter jadi pada anak sapi yang baru dilahirkan. Infeksi virus Rota merupakan hal yang serius, kejadian yang mewabah pernah dilaporkan di Amerika Serikat, Inggris, Kanada dan Australia. Sedangkan kejadian di Indonesia yang dihubungkan dengan infeksi virus Rota belum dilaporkan. Virus Rota termasuk keluarga Reo viridea. Sesuai dengan namanya, virus Rota menyerupai roda (Rota = Wheel), mengandung asam nukleat (nucleid acid) yang berupa asam nukleat ribo (ribo nucleid acid, RNA) dan berserabut ganda (double stranded), tidak mempunyai selubung (envelop atau peplos). Hewan rentan adalah hewan yang berumur sangat muda. Selain menyerang babi, dapat pula menyerang sapi, domba, rusa, anjing, kucing, tikus, kelinci, unggas dan manusia. ...
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