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All Journal BIOTROPIA - The Southeast Asian Journal of Tropical Biology Jurnal Penelitian Hasil Hutan
Titiek Setyawati
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Immunology & microbiology Materials Science & Nanotechnology Veterinary

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INVASION OF Acacia decurrens WILLD. AFTER ERUPTION OF MOUNT MERAPI, INDONESIA Sunardi Sunardi; Sulistijorini Sulistijorini; Titiek Setyawati
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 24 No. 1 (2017)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (34.926 KB) | DOI: 10.11598/btb.2017.24.1.524

Abstract

Eruption of Mount Merapi in 2010 caused a dense cover of Acacia decurrens Willd., which is an Invasive Alien Plant Species (IAPS). The dense cover happened in all areas of Mount Merapi National Park (MMNP) in Java, Indonesia. This study was aimed to describe the relationship between major natural disturbance from volcanic eruption in triggering the invasion of A.decurrens in Mount Merapi National Park. Vegetation data were collected using line transect in two different sites. The first site was Cangkringan which was affected by pyroclastic flow and the second site was Selo which was not affected by pyroclastic flow. Distribution patterns and association of A.decurrens with other species in each location was analyzed using ordination analysis of the Non-Metric Multidimensional Scaling (NMDS). Microclimate such as temperature, humidity, light density and soil humidity was recorded in each location. Correlation between species abundance and microclimate data was assessed using Canonical Correspondence Analysis (CCA). The results showed that the population of A. decurrens was more dominant in Cangkringan than in Selo site. Cangkringan site was impacted with pyroclastic flow during Mount Merapi eruption in 2010, while Selo site was not affected. In Cangkringan, A.decurrens was distributed in clump, while in Selo the plant was randomly distributed. Ordination analysis using NMDS showed that there was positive association between A.decurrens and herbaceous plant. Negative association was observed between A.decurrens and other tree species. CCA analysis showed that temperature and light density was positively correlated with A. decurrens abundance. This study showed that the IAPS invasion in MMNP was correlated with the eruption of Mount Merapi.
AKTIVITAS ANTIOKSIDAN DAN TOKSISITAS EKSTRAK KULIT KAYU RARU (COTYLELOBIUM SP.) Gunawan Pasaribu; Titiek Setyawati
Jurnal Penelitian Hasil Hutan Vol. 29 No. 4 (2011): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2011.29.4.322-330

Abstract

Research on natural medicinal plants has been growing due to the increasing interest to natural medicinal material that is considered safer than synthetic medicines. In North Sumatera, bark of Cotylelobium sp which is locally known as raru, bas been widely utilized by the local community. The skin bark of this species is commonly used as a mixture of "nira" to produce "tuak" (Batak's traditional alcoholic liquor). In addition, local community has been using this species for traditional bealing as well. This research is to study the potency of raru's skin bark in producing anticocidant using DPHH method. The taxicity activity of the material was also examined using Brine Shrimp Lethality Test (BSLT) method. Results show that the yield extract of Cotylelobium melanocylon Pierre was 30.11% and Cotylelobium lanceolatum Craib was 14.50%. Both extracts contains flavonoid, tanin, saponin, triterpenoid and bidroquinon. The extract of Cotylelobium melanocylon Pierre has antioxidant activity against DPPH radical with value of IG as mus as 108.487 ppm and 77.909 ppm for Cotylelobium lanceolatum Craib. Furthermore, the toxicity of Cotylelobium melanoxylon Pierre was 643.550 ppm and Cotylelobium lanceolatum Craib was 767.191 ppm LC
Co-Authors Gunawan Pasaribu Sunardi Sunardi