Densitas dan Fekunditas Tabernaemontana macrocarpa di Komunitas Pinus merkusii, Hutan Lindung Mangunan, Bantul
Abstract: Tabernaemontana
macrocarpa Jack (Cembirit) is a tree species found in Mangunan Conservation
Forest and hasn’t been known yet when it appears firstly. Until this time,
information about it’s fecundity is still unknown. Pine litter containing
allelopathic compound (monoterpen α-pinene and β-pinene) that is toxic to other
species. The high density of it’s seedling indicated that pines allelopathy
didn’t effect the Cembirit in Pines community. This research purposes to find
out the density and fecundity of Cembirit in Pines community. Data collection
had been conducted in December 2015 – February 2016 in Mangunan Conservation
Forest, Bantul. Data collections were conducted 6 times in 10x10m2 permanent
plots. The growth data were analysed using Relative Growth Rate (RGR) analysis.
The Cembirit densities in Pines community are 10.420 ind Ha-1 (seedling), 460
ind Ha-1 (sapling), and 40 ind Ha-1 (tree). The Cembirit were categorized into
3 groups based on it’s stem diameter were including 7,7-9,8 cm (group 1),
9,9-11,8 cm (group 2), and 11,9-13,8 cm (group 3). The Cembirit’s RGR are,
0,00079 cm (group 1), 0,00069 cm (group 2), and 0,00055 cm (group 3), with
their fecundity are 3,4%, 5,6% and 2,4%. The high density, RGR, and fecundity
value of Cembirit, indicated it’s invasiveness and potentialy become a strong
competitor for Pines.
Penulis: Abi Giusti Wohing
Atie, Retno Peni Sancayaningsih
Kode Jurnal: jpbiologidd160275
