Floristic Composition and Structural Comparison of Limestone Forests at Three Different Elevations in Bau, Kuching, Sarawak, Malaysia
Abstract:
The study using plot method to determine floristic composition and forest
structure of limestone forests at three different altitudes in Bau have been
carried out. A total of 1682 trees encompassing an area of 0.75 ha were
enumerated. They belong to 129 species in 41 families. Euphorbiaceae, Moraceae,
Ebenacaea, Rubiaceae and Violaceae were important families in term of density.
Shannon Diversity Index (H’), species richness (R) and species evenness (E)
decreases with increasing altitude. The floristic similarity of family
composition is higher compare to species composition between altitudes. Moraceae
contributed the highest basal area and above ground biomass contribution in all
plots at all altitudes; for species Ficus aurata is dominant at 15 m (P1)
and 30 m (P3), whilst Mallotus oblongifolius is dominant at 50
m (P2). Analysis on the importance values (Iv) of all tree
species enumerated at all altitudes quantified the dominant and co-dominant
species with the highest and second highest Iv. The dominant and
co-dominant species is Arenga borneensis and Ficus aurata 15 m;
Mallotus oblogifolius and Artocarpus rigidus at 30 m and
Ficus aurata Saraca hullettii in 50. Between 68-77% of all species
enumerated have Iv less than 5% at all altitudes.
How to cite this article
Jumaat H. Adam and Zahiruddin Mamat, 2005. Floristic Composition and Structural Comparison of Limestone Forests at Three Different Elevations in Bau, Kuching, Sarawak, Malaysia. Journal of Biological Sciences, 5: 478-485.
REFERENCES
Anderson, J.A.R. and P. Chai, 1982. Vegetation. Sarawak Museum J., 30: 195-206.
Soepadmo, E., 1987. Structure, aboveground biomass and floristic composition of forest at Gunung Janing Barat, Endau, Johore, Malaysia. Malay. Natl. J., 41: 275-290.
Kato, R., Y. Tadaki and H. Ogawa, 1978. Plant biomass and growth increment studies in Pasoh Forest. Malay. Natl. J., 30: 211-224.
Turner, I., 1987. An enumeration of one ha plot of Pantai Aceh Forest reserve, Penang. Garden Bull., 42: 29-44.
Adam, J.H. and F. Phillipinus, 1993. Taksonomi tumbuhan batu kapur di Sabah. Prosiding Bengkel Penyeldikan IRPA ke-2 UKM, PBPIkUKM, 1993, Jilid, pp: 1055-1058.
Ludwig, J.A. and J.F. Reynolds, 1988. Statistical Ecology. A Primer Methods and Computing. Wiley-Publication. John Wiley and Sons, New York, USA
Jacobs, M., 1988. The Tropical Rain Forest. Spring-Verlag, Berlin
Whitmore, T.C., 1975. Tropical Rain Forest of the Far East. Oxford University Press, UK
Adam, J.H. and H.M.K.A Ismail, 1993. Kajian ke atas kandungan dan analisis kuantitatif flora pokok Angiosperma di Gunung Kinabalu. Prosiding Simposium Sumber Alam Pertama, FSSA, UKM Sabah, PSSAPFUS, 1993, Kota Kinabalu, Sabah, pp: 103-112.
Anderson, J.A.R., 1965. Limestone habitat in Sarawak. Proccedings of the Symposium on Ecological Research in Humid Tropics Vegetation, (SERHTV'65), Government of Sarawak and UNESCO Science Co-Operation Office for South-East Asia, pp: 49-57.
Adam, J.H. and K. Ibrahim, 1992. An enumeration of 1 ha of lowland Dipterocarp forest at Danum valley field centre, Lahad Datu, Sabah. Proccedings of the International Symposium on Rehabilitation of Tropical Rainforest Ecosystems: Research and Development Priorities, (ISRTRERDP`92), Kuching, Sarawak, pp: 45-56.
Brower, J. E. and J.H. Zar, 1977. Field and Ecological Methods for General Ecology. Wm. C. Brown Company Publisher, USA
© Science Alert. All Rights Reserved