Judul: Analisis pengaruh jenis asing invasif acacia nilotica Wild. ex Dell 1813 terhadap pola pergerakan banteng (Bos javanicus d’Alton 1823) di Padang Savana Bekol, Taman Nasional Baluran
Abstrak: Bos javanicus d’Alton 1823 (banteng) is a rare and threatened species in the world. In Indonesia, it was conserve in some place, i.e: Baluran National Park. This research investigated the affected factors and effects of Acacia nilotica Wild ex. Dell 1813 invasion on the pattern of banteng movement in Bekol Savanna, Baluran National Park by built the correlation of conservation variable. The objective of the research is to build a conservation model of banteng. This is done by simulating the dynamic model consists of green forage and the effect of Acacia nilotica invasion to determine the carrying capacity in savanna Bekol. Field research began in August through to October 2005 at Bekol Savanna, Baluran National Park, East Java. A system dynamic approach was used since it has demonstrated its capability as a tool to support management for environmental decision. The model is built using software by Powersim Constructur 2.5 to make a prediction about the future behaviour of banteng conservation system. Results revealed that banteng in Bekol Savanna are responsed of movement space and the growth of Acacia nilotica reduced the movement space and forage productivity of Bekol savanna. Based on the simulated model, it was concluded that Acacia nilotica invasion has changed the structure of banteng habitat this resulted in the decrease population of banteng in Bekol savanna.
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Judul: Studi Autekologi dan pengaruh invasi akasia (Acacia nilotica) (L.) Willd. ex Del. terhadap eksistensi savanadan strategi penanganannya di Tamana Nasional Baluar Banyuwangi Jawa Timur
Abstrak: Tujuan yang ingin dicapai dari penelitian ini adalah untuk: (a). Mengetahui autekologi meliputi; siklus hidup, fenologi, produksi biji, pemancaran biji, dan struktur tagakan A. nilotica di Taman Nasional Baluran, (b). Mengetahui derajat invasi A. nilotica di Taman Nasional Baluran dan upaya yang telah dilakukan), (c). Mengetahui pengaruh invasi A. nilotica terhadap komposisi spesies, Indeks Keanekaragaman Spesies (H'), Indeks Similaritas (IS), asosiasi spesies, biomasa tumbuhan bawah dibandingkan dengan daerah yang belum terinvasi A. nilotica.
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Judul: Sintesis dan Pencirian Kompleks Fe(III)-Kuersetin
Abstrak: Quercetin belongs to flavonols which is able to chelate metal ions. Quercetin may chelate metal ions at 3’,4’-catechol, 3- or 5-hydroxycromone sites. In this study, quercetin was complexed with Fe(III). The complex with Fe(III) ions from FeCl3·6H2O was more stable than the complex derived from Fe(NO3)3·9H2O. The quercetin was yellow in color and showed maximum wavelengths (λ􀭫􀭟􀭶) at 250 and 370 nm. The Fe(III)-quercetin complex from Fe(NO3)3·9H2O was yellowish green with 􀟣􀭫􀭟􀭶 at 280 and 420 nm, whereas that from FeCl3·6H2O was dark green with 􀟣􀭫􀭟􀭶 at 280 and 430 nm. The 􀟣􀭫􀭟􀭶 shift indicated that the complex was formed at 3-hydroxychromone site. The Fe(III)- quercetin complex was formed with 1:1 metal-ligand mole ratio based on atomic absorption spectrophotometry analysis and the X-ray diffractogram showed that the crystallinity of the complex was 37%.
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