Inventory and habitat study of orchids species in Lamedai Nature Reserve, Kolaka, Southeast Sulawesi

Abstract

Lestari DA, Santoso W (2011) Inventory and habitat study of orchids species in Lamedai Nature Reserve, Kolaka,. Orchid is one of the ornamental plants which have been high commercial value. Therefore, orchid often has been over exploitation. Finally, some of orchid species are becoming threatened or even endangered. Purwodadi Botanical Garden as an institute of ex-situ conservation play role with it. The aim of this research is to inventory orchid's species in Lamedai Nature Reserve, Kolaka, Southeast Sulawesi by explorative method. Observation for habitat study was focused on some ecological factors supported to orchids growth like host tree, zone growth on host tree, abundance of sunlight, thickness of substrate (moss), orchid species and number of individual species. The result showed that there were 27 orchids species, consist of, 25 species (16 genera) epiphytic orchid and 2 species terrestrial orchid such as Eulophia keithii var. celebica and Goodyera rubicunda (Blume) Lindl. The host preference for the epiphytic orchid is the group of Myrtaceae family like Syzygium sp., Metrosideros vera Niederen and Metrosideros sp. They mostly grow on the main stem of the tree zone 1 on thick substrate (moss) and get a little abundance of sunlight (calm).

Seed Germination of Pericopsis mooniana Thw. Based on Color and Scarification Techniques

“…Salah satu tempat spesies ini dapat ditemukan yaitu di daerah Cagar Alam Lamedai, meskipun kawasan tersebut tercatat telah rusak akibat deforestasi dan aktivitas penambangan (Lestari & Santoso, 2011). Hal ini menyebabkan kayu kuku menjadi spesies yang terancam kepunahannya (vulnerable tree species).…”

Teknik Pembibitan Spesies Kayu Kuku (Pericopsis mooniana) untuk Reklamasi Lahan Bekas Tambang (Nursery Technique of Pericopsis mooniana for Post-Mining Land Reclamation)

“…Selain itu solum tanah menjadi dangkal dan tanpa lapisan atas (top soil). Kondisi tersebut mengakibatkan tanah menjadi labil bagi pertumbuhan tanaman serta terjadi pemadatan tanah (Lestari & Santoso, 2011).…”

“…Kayu kuku (Pericopsis mooniana THW) merupakan jenis lokal Sulawesi yang mampu beradaptasi pada lahan-lahan marjinal dan tidak produktif. Spesies ini dapat ditemukan di daerah CA Lamedai, yang mana pada kawasan tersebut mengalami kerusakan akibat deforestasi dan aktivitas penambangan (Lestari & Santoso, 2011). Kayu kuku dapat dikembangkan dengan menggunakan media tanam dari lahan -lahan yang tidak produktif (Alfaizin, 2016).…”

Notes on the orchids of Bali, Indonesia: six new species records

“…There are increasing threats to orchids in their natural habitats, mainly due to human activities such as habitat destruction and over-collecting (IUCN/SSC Orchid Specialist Group, 1996;Lestari & Santoso, 2011;Barman & Devadas, 2013), or as a consequence of natural disasters related to climate change (Seaton et al, 2010;Barman & Devadas, 2013). Nevertheless, new records of orchid species for Bali are being found.…”