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Deden Girmansyah, Deden
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education

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Begonia hirtella Link DI JAWA Girmansyah, Deden
BERITA BIOLOGI Vol 13, No 3 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (168.553 KB) | DOI: 10.14203/beritabiologi.v13i3.678

Abstract

Begonia hirtella Link. is one of the introduced species that naturalized and grows wild in Java. This species has very good growing ability and potentially to be invasive at new habitat. Recently, there is no information about the status, existence and distribution of this species in Java. Consequently, it need to be informed about it status, presence and distribution more clearly. Collecting data from herbarium collections, internet connection, various references and some field trips were conducted. This information can improve knowledge and awareness of people as well as assisting monitoring and controlling for introduced plant species such as Begonia hirtella in Java, Indonesia.
KEANEKARAGAMAN BEGONIA (BEGONIACEAE) DARI KAWASAN GUNUNG WATUWILA DAN GUNUNG MEKONGGA, SULAWESI TENGGARA Girmansyah, Deden
BERITA BIOLOGI Vol 10, No 1 (2010)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v10i1.2048

Abstract

A taxonomic study of the genus Begonia Blume (Begoniaceae) in South East Sulawesi (Mt. Mekongga and Mt. Watuwila) were conducted based on morphological characters. Six species of Begonia were discovered. Three previously known species (Begonia aptera Blume, B. flacca Irmschr. and B. hispidissima Warburgh.), two new species and one variety were proposed and on going for publication. Some colour pictures were displayed and potential uses of each species are presented.
BEGONIA TANGGAMUSENSIS, A NEW SPECIES OF BEGONIA SECT. PLATYCENTRUM FROM GUNUNG TANGGAMUS, SUMATRA AND NOTES ON ALLIED SPECIES BEGONIA SCOTTII AND BEGONIA PSEUDOSCOTTII HUGHES, MARK; GIRMANSYAH, DEDEN
REINWARDTIA Vol 23, No 1 (2024): Volume 23, No 1 (2024): Reinwardtia
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/reinwardtia.2024.4772

Abstract

A new species, Begonia tanggamusensis Girm. & M.Hughes (§ Platycentrum), is described from Gunung Tanggamus in southern Sumatra, where it is endemic. It grows on moss covered rocks and at the base of large trees in montane forests at an elevation of 1,700–2,000 m. A provisional conservation assessment places the species in the Near Threatened category.
LEAF ANATOMICAL ADAPTATION OF EXOTIC INVASIVE MICONIA CRENATA (VAHL.) MICHELANG ALONG ALTITUDINAL GRADIENT: A CASE STUDY OF MOUNT GEDE PANGRANGO NATIONAL PARK, WEST JAVA, INDONESIA JUNAEDI, DECKY INDRAWAN; TIHURUA, EKA FATMAWATI; WIDOYANTI, WIDOYANTI; GIRMANSYAH, DEDEN
REINWARDTIA Vol 23, No 1 (2024): Volume 23, No 1 (2024): Reinwardtia
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/reinwardtia.2024.4755

Abstract

Miconia crenata is a widely spread species that occurs in multiple ecosystems. However, there is limited information on M. crenata invasion biology, ecology, and anatomy, particularly in the context of mountainous tropical forest and biodiversity management. Therefore, we examined elevation effects upon leaf anatomical structure of exotic invasive M. crenata at Mount Gede-Pangrango National Park (MGPNP). We sampled the leaves at four different elevations i.e., 715 m asl, 800 m asl, 900 m asl, and 1,000 m asl. Cross section leaf anatomy specimens of M. crenata were obtained by using paraffin method and stained with safranin and fast green. This study found that M. crenata leaf anatomy was correlated with elevation shown by changes in leaf tissue thickness and stomata size. Further study is needed of leaf anatomical variation of exotic invasive species along driven by soil properties and the variation across different plant taxa and growth forms. Such studies are important to determine adaptation capacity of invasiveness.
Co-Authors Decky Indrawan Junaedi Eka Fatmawati Tihurua Harry Wiriadinata, Harry Hoover, Scott Hughes, Mark James Hunter, James James M. Hunter, James M. Kuswata Kartawinata W. Scoot Hoover, W. Scoot WIDOYANTI, WIDOYANTI WS Hoover, WS