Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences
Vol. 8 No. 3 (2018)

The Autecology of Genus Dischidia (Asclepiadaceae) in Bangka Island: Characteristics of Vegetation and Abiotic Environmental Factors Affecting Abundance

Yuliani Hajari (Bogor Agricultural University)
Sulistijorini Sulistijorini (Department of Biology, Faculty of Mathematics and Natural Sciences, Bogor Agricultural University)
Nunik Sri Ariyanti (Department of Biology, Faculty of Mathematics and Natural Sciences, Bogor Agricultural University)



Article Info

Publish Date
07 Sep 2018

Abstract

Dischidia is an epiphytic plant, it is used as herbal medicine and has economic value. In addition, Dischidia also has an ecological function. Moreover, some species of Dischidia are endemic in a particular region. Various forest types occur in Bangka Island serves as natural habitat for this epiphytic plant. This research aimed to record the diversity and abundance of Dischidia and analyze those environmental factors which affect its abundance. The research was conducted in August – September 2016 at Bangka Island. Three plots of 20 × 20 m² were placed with a minimum interval of 50 m in the habitat where Dischidia are found. The species diversity and abundance of Dischidia as well as abiotic factors such as temperature, humidity, light intensity, wind speed, and altitude were recorded in these plots. The vegetation structure was analyzed based on index of diversity, index of dominancy and index of evenness. Data on the environmental condition and abundance of Dischidia were then analyzed using Canonical Correspondence Analysis (CCA) method with Canoco 4.5 software. Five species of Dischidia were found in Bangka Island that are Dischidia bengalensis, Dischidia imbricate, Dischidia nummularia, Dischidia rafflesiana, and Dischidia hirsute. Dischidia is found in 14 species of host plants. D. imbricate (23 individual plants) occurred in the heath forest at Pejem showed the highest abundance. Epiphytic fern plants, the Asplenium nidus (27 individual plants), was the dominant epiphytes found in the host tree of Dischidia The CCA showed that light intensity, temperature and humidity influenced the abundance of Dischidia.

Copyrights © 2018






Journal Info

Abbrev

jtrolis

Publisher

Subject

Agriculture, Biological Sciences & Forestry Environmental Science

Description

The Journal of Tropical Life Science (JTLS) provides publication of full-length papers, short communication and review articles describing of new finding or theory in living system, cells and molecular level in tropical life science and related areas. The journal publishes articles that report novel ...