THE DIVERSITY AND ABUNDANCE OF GROUND HERBS IN LOWLAND MIXED DIPTEROCARP FOREST AND HEATH FOREST IN BRUNEI DARUSSALAM

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Published: May 9, 2025
DOI: https://doi.org/10.14203/reinwardtia.v14i1.397%20%20
Keywords:
Borneo, tropical forests, species richness, Zingiberaceae, light availability

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Nurul Hazlina Zaini
Rahayu Sukmaria Sukri

Abstract

ZAINI, N. H. & SUKRI, R. S. 2014. The diversity and abundance of ground herbs in lowland mixed dipterocarp forest and heath forest in Brunei Darussalam. Reinwardtia 14(1): 73 – 78. ?Herbaceous plants are important components of total plant species richness in tropical forests. Ground herb diversity and abundance were studied in a lowland Mixed Dipterocarp forest (Andulau) and a heath forest (Bukit Sawat) in Brunei Darussalam, Borneo. At each site, all ground herbs in twenty randomly selected 10 x 10 m subplots within a one hectare permanent plot were censused and identified. The study recorded a total of 20 families and 32 genera of ground herbs, with the family Zingiberaceae as the most abundant at both sites. Thirteen genera were recorded only at Andulau and 7 genera were exclusive to Bukit Sawat, with twelve genera common to both sites. Ground herb species richness appear higher at Andulau than Bukit Sawat (37 vs. 29), but this difference was not statistically significant at the subplot level. However, ground herb abundance and density were significantly higher at Bukit Sawat than Andulau (n = 846 vs. 385; 4230 vs. 1925 individuals ha-1). The more open canopy at Bukit Sawat may provide higher light availability here than at Andulau, which is characterised by a closed canopy. We suggest that light availability is the most important environmental factor influencing ground herb density and abundance at these sites.

Article Details

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Vol. 14 No. 1 (2014)
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Articles

References

COODE, M. J. E., DRANSFIELD, J., FORMAN, L. L., KIRKUP, D. W. & SAID, I. M. 1996. A checklist of the flowering plants and gymnosperms of Brunei Darussalam. Ministry of Industry and Primary Resources, Brunei.

COSTA, F. R. C. 2004. Structure and composition of the ground-herb community in a terra-firme Central Amazonian forest. Acta Amz. 34: 53–59.

CROAT, T. B. 1978. Flora of Barro Colorado Island. Stanford University Press, Stanford.

DAVIES, S. J. & BECKER, P. 1996. Floristic composition and stand structure of Mixed Dipterocarp and Heath Forests in Brunei Darussalam. Journal of Tropical Forest Science. 8(4): 542–569.

GENTRY, A. & DODSON, C. 1987. Contribution of non-trees to the species richness of a tropical rain forest. Biotropica. 19: 149–156.

GENTRY, A. H., & EMMONS, L. H. 1987. Geographical variation in fertility, phenology and composition of understory of Neotropical forests. Biotropica. 19: 216–227.

HALL, J. N. & SWAINE, M. D. 1976. Classification and ecology of closed-canopy forest in Ghana. Journal of Ecology. 64: 913–951.

HASSAN, S. H. J. N. 2012. A comparison of forest structure and tree characteristics in heath and mixed dipterocarp forests. BSc Student thesis, Universiti Brunei Darussalam.

LAMB, A., GOBILIK, J., ARDIYANI, M., & POULSEN, A. D. 2013. A guide to gingers of Borneo. Natural History Publications Borneo, Sabah.

MAGURRAN, A. E. 2004. Measuring Biological Diversity. Blackwell Science Ltd, Blackwell Publishing, UK.

NABAWAN Project. 1996. Sabah Biodiversity Conservation Project – Identification of Potential Protected Areas. Ministry of Culture, Environment and Tourism.

POULSEN, A. D. & BALSLEV, H. 1991. Abundance and cover of ground herbs in an Amazonian rain forest. Journal of Vegetation Science. 2: 315–322.

POULSEN, A. D. & PENDRY, C. A. 1995. Inventories of ground herbs at three altitudes on Bukit Belalong, Brunei, Borneo. Biodiversity and Conservation. 4: 745–757.

POULSEN, A. D. 1996. Species richness and density of ground herbs within a plot of lowland rainforest in North-West Borneo. Journal of Tropical Ecology. 12: 177–190.

POULSEN, A. D. 2006. Etlingera of Borneo. Natural History Publications, Kota Kinabalu, Borneo.

R Core Team. 2012. R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. URL http://www.R-project.org

RICH, P. M., CLARK, D. B., CLARK, D. A., OBEBAUER, S.F., 1993. Long term study of solar radiation regimes in a tropical wet forest using quantum sensors and hemispherical photography. Agricultural and Forest Meteorology. 65: 107–127.

SMITH, A. P. 1987. Respustas de hierbas del sotobosque tropical a claros ocasiondos por la caida de arboles. Revista de Biologia Tropical 35 (Supl. 1): 111–118.

WHITMORE, T. C. 1984. Tropical rain forests of the far east. Clarendon Press, Oxford, UK

WISZ, M. S., HIJMANS, R. J., LI, J., PETERSON, A. T., GRAHAM, C. H., GUISAN, A., & NECAS. 2008. Effects of sample size on the performance of species distribution models. Diversity and Distributions. 14: 763–73.

ZAINI, N. H. 2013. Ground herb diversity and species richness in Heath and Mixed Dipterocarp forest in Brunei. BSc Student thesis, Universiti Brunei Darussalam. (BSc Student thesis).