Potensi tanaman obat di daerah Bali dapat digali dari informasi yang tertuang dalam Lontar Usada Bali yang berisi sistem pengobatan, bahan obat dan cara pengobatannya. Seiring perkembangan zaman, informasi dan pengetahuan serta jenis tumbuhan yang digunakan tersebut semakin berkurang dari generasi ke generasi. Tujuan penelitian untuk memaparkan hasil kegiatan konservasi tumbuhan lontar usada berupa eksplorasi tumbuhan dan pengetahuan etnobotani Bali Utara dan pengkoleksiannya di Kebun Raya “Eka Karya” Bali (KRB). Penelitian dilakukan dengan eksplorasi dan iventarisasi tumbuhan obat berdasarkan pustaka Lontar Bali dan koresponden kunci (Balian).untuk dikoleksi di KRB. Hasil penelitian terkumpul 67 nomor koleksi dimana 16 diantaranya merupakan jenis baru untuk dikoleksi di KRB. Beberapa jenis tumbuhan yang terancam keberadaannya di alam yaitu:  Averrhoa carambola Linn., A. blimbi Linn, Citrus aurantifolia Sw., Alstonia scholaris (L.) R.Br., dan Areca cathecu L. Berdasarkan informasi Balian dan lontar usada Bali nampak jelas kekayaan kearifan lokal dalam pengobatan yang terlihat dari beraneka ragamnya informasi mengenai kegunaan dan tata cara pemakaian dari masing-masing tumbuhan. Diharapkan konservasi ex-situ di KRB koleksi tumbuhan obat, masyarakat dapat mengetahui berbagai macam tumbuhan yang berpotensi obat dan ikut serta melestarikannya.   Kata kunci : Lontar usada, balian, kearifan lokal, pengobatan, koleksi

Living collection such as tree in botanical garden has hazard risk. Tree hazard risk must be evaluated to give safety for visitor and employee. However, standing tree with decay wood inside is often the cause of tree failure. Internal tree defect such as wood decay cannot be seen only from visual investigation but must be done with ArborSonic acoustic tomograph to get accurate result. The objective of this research was to diagnostics wood decay in the stand of Joannesia princeps Vellozo tree using visual investigation and ArborSonic measurement technology. The result shows Joannesia princeps has severe damage cause of wood decay especially in the base of the trunk. Wood decay percentage range from 21-49%. The alleged caused of this damage is stem borer and termites. This information give advantage for Bali Botanical Garden manager to minimize this tree hazard risk by doing activity such as crown pruning, give hazard risk tree sign to limit activity around this tree and do pest management.

Pleaides image is an important asset to obtain data and information with regard to the structure of the vegetation in the forest

Abstract. Sutomo, Darma IDP, Iryadi R. 2020. Short communication: The dissimilarity in plant species composition of savanna ecosystem along the elevation gradient on Flores Island, East Nusa Tenggara, Indonesia. Biodiversitas 21: 492-496. Savannas in Indonesia are located from west to the east across the archipelago. The objective of this research was to investigate the dissimilarity of floristic composition among savannas at different elevations in Flores. Sixteen sampling plots, each measuring 20 x 20 m were spread over the lowland, midland, and upland savannas. We analyzed the differences in plant community composition among the savannas using NMDS ordination and SIMPER analyses available in PRIMER V.6. As many as 41 species of plants were found in all of the sampling plots. The lowland savanna plant community consisted of Themeda arguens, Zoesya sp., Chromolaena odorata, Crotalaria sp., Adenanthera pavonina, Ocimum sp., Lantana camara in the groundcover layer, and Ziziphus jujube, and Borassus flabellifer at the tree layer. The midland savanna had almost similar composition, except the occurrence of Imperata cylindrica and Leucaena leucocephala, and the upland savanna plant species were Cyperus sp., Polygala paniculata, I. cylindrica, Melastoma malabathricum, C. odorata, Centella asiatica, Vaccinium sp., and Cymbopogon sp. The savannas in Flores were invaded by invasive exotic species, namely L. camara and C. Odorata which may pose serious threat to the existence of savannas.

Epiphytic ferns grow attached to the phorophyte tree or rocks. This study aims to determine the diversity, distribution of epiphytic ferns and its phorophyte trees in the forests of Bedugul, Bali. The method used in this study was purposive random sampling. The study recorded 24 species of epiphytic ferns in the forest of Bedugul Bali (16 species in Bukit Pengelengan, 12 species in Bukit Tapak and 12 species in Bukit Lesung). Epiphytic ferns found limited in one study area are Arthropteris palisotii, Goniophlebium subauriculatum, Loxogramme avenia, Oleandra pistillaris, Asplenium caudatum, Belvisia mucronata, Ctenopteris obliquata, Davallia pentaphylla, Davallia solida, Drynaria sp., Hymenophyllum sp., Monogramma trichoidea and Nephrolepis sp1. Epiphytic ferns found spread over in more than one study areas are Asplenium nidus, Belvisia spicata, Davallia denticulata, Goniophlebium percisifolium, Pyrrosia varia and Selliguea enervis. The highest-distributed species of epiphytic ferns are occupied by Belvisia spicata and Davallia denticulate. There are 33 species of phorophyte trees recorded (22 species in Bukit Pengelengan, 21 species in Bukit Tapak and 11 species in Bukit Lesung). The favorite phorophyte trees are Platea latifolia in Bukit Pangelangan, Syzygium zollingerianum. in Bukit Tapak and Engelhardia spicata in Bukit Lesung.

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Chromolaena odorata is one of the weeds that is difficult to control and causes loss both economically and ecologically. This study aims to predict the distribution of C. odorata which affected by climate change and the potential of using fungal pathogens for its eradication efforts in Indonesia. The Biodiversity and Climate Change Virtual Laboratory application was used to create Habitat Suitability Index of C. odorata. Species data were obtained from the Global Biodiversity Information Facility and the variable environment parameters were obtained from the Worldclim current condition (1950-2000). Results show that Generalized Linear Model has values of 0.98. C. odorata most likely spreads to eastern parts of Indonesia. The model predicted it to be suitable to inhabit Bali-Lombok Islands (HSI ±0.8) as well as Lesser Sunda Islands, Flores (HSI ±0.76) and Sumba (HSI ±0.82), and also Papua which share similar HSI with Sumba. Four species of putative fungal pathogens were isolated from the diseased leaf tissue of C. odorata. One species of fungus that causes severe infection in the leaves of C. odorata was morphologically identified as Septoria sp. It considered as a biological control agent. Further studies are needed to confirm this association and their potential for biological control.

Citarum watershed is a region of approximately 6,610 km2 in West Java, Indonesia. Citarum watershed has been degraded through historical land use and vegetation clearing. Rehabilitation of Citarum watershed uses Indigofera tinctoria L. that has value as a source of natural blue dye and is considered suitable for the region. Species distribution modelling and Habitat suitability index (SDM/HSI) were undertaken for I. tinctoria. The occurrence and environment data (bioclimatic, topography, and soil type) were input to HSI. Results of the Indigofera tinctoria habitat suitability model in Citarum watershed are very good (0.9–1) for some parts of the Citarum watershed. The medium and high suitability areas were respectively 4.49% and 4.37% of the area were located in the lowlands (Bekasi Regency and Karawang Regency). Prediction based on climate modelling for 2050 and 2070 estimated that the medium-high suitability area of Indigofera tinctoria will be reduced relative to the present.