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Effects of canopy openings on tree seed germination in a Malaysian dipterocarp forest

Published online by Cambridge University Press:  10 July 2009

James W. Raich
Affiliation:
School of Forestry and Environmental Studies, Duke University, Durham, NC, 27706, USA
Gong Wooi Khoon
Affiliation:
School of Biological Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia

Abstract

The germination of 43 tree species native to the lowland forests of Malaysia was monitored on forest soil in trays placed in closed-canopy forest, an artificial forest gap, and a large clearing. Germination varied significantly among habitats, with only seven species germinating well in all three sites. Seed germination of most species demonstrated clear patterns of shade tolerance or intolerance identical to those long recognized for tree seedlings. Favoured locations for germination were similar to known distributional patterns of adult individuals in mature and secondary forests. Most forest canopy species germinated in the gap, but germination in the large clearing was dramatically reduced or nil; the regeneration of these species in large clearings will be severely retarded even when seeds are present. Canopy-induced inhibition of germination was apparent in several pioneer species; seeds moved from the forest into the gap or clearing germinated rapidly. Results indicate that natural treefall gaps do not inhibit the germination of most species, but do allow pioneer species to germinate, and therefore regenerate. Although germination occurred in all three locations, the level of germination for particular species varied greatly among habitats. We conclude that germination requirements play a very important role in controlling the species composition of regeneration in forest understorey, gap, and large clearing habitats.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1990

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References

LITERATURE CITED

Aminuddin, M. &. NG, F. S. P. 1982. Influence of light on germination of Pinus caribaea, Gmelina arborea, Sapium baccatum and Vitex pinnata. Malaysian Forester 45:6268.Google Scholar
Bewley, J. D. & Black, M. 1982. Physiology and biochemistry of seeds in relation to germination. Volume 2. Viability, dormancy, and environmental control. Springer-Verlag, Berlin. 370 pp.CrossRefGoogle Scholar
Brokaw, N. V. L. 1985. Treefalls, regrowth, and community structure in tropical forests. Pp. 5369 in Pickett, S. T. A. & White, P. S. (eds). The ecology of natural disturbance and patch dynamics. Academic Press, Inc., Orlando, Florida, USA.Google Scholar
Chazdon, R. L. & Fetcher, N. 1984a. Photosynthetic light environments in a lowland tropical rain forest in Costa Rica. Journal of Ecology 72:553564.CrossRefGoogle Scholar
Chazdon, R. L. & Fetcher, N. 1984b. Light environments of tropical forests. Pp. 2736 in Medina, E., Mooney, H. A. & Vázquez-Yanes, C. (eds). Physiological ecology of plants of the wet tropics. Dr W. Junk, The Hague, The Netherlands.CrossRefGoogle Scholar
Corner, E. J. H. 1952. Wayside trees of Malaya. Volume 1. (2nd edition). Government Printing Office, Singapore. 772 pp.Google Scholar
Denslow, J. S. 1980. Gap partitioning among tropical rainforest trees. Biotropica 12 (Suppl.):4755.CrossRefGoogle Scholar
Fetcher, N., Oberbauer, S. F. & Strain, B. R. 1985. Vegetation effects on microclimate in lowland tropical forest in Costa Rica. International Journal of Biometeorology 29:145155.CrossRefGoogle Scholar
Gong, W. K. & Ong, J. E. 1983. Litter production and decomposition in a coastal hill dipterocarp forest. Pp. 275285 in Sutton, S. L., Whitmore, T. C. & Chadwick, A. C. (eds). Tropical rainforest: ecology and management. Blackwell Scientific Publications, Oxford.Google Scholar
Gong, W. K. & Ong, J. E. 1984. Studies on the structure and species composition, standing biomass, litter production and natural regeneration of coastal hill dipterocarp forest. Pp. 2638 in Technical Report, Working Group on Tropical Forest Ecosystems. Malaysian National MAB Committee, Kepong, Selangor, Malaysia.Google Scholar
Grubb, P. J. 1977. The maintenance of species richness in plant communities: the importance of the regeneration niche. Biological Reviews 52:107145.CrossRefGoogle Scholar
Hartshorn, G. S. 1978. Tree falls and tropical forest dynamics. Pp. 617638 in Tomlinson, P. B. & Zimmermann, M. H. (eds). Tropical trees as living systems. Cambridge University Press, Cambridge.Google Scholar
Jones, E. W. 1956. Ecological studies on the rain forest of southern Nigeria. IV (continued). The plateau forest of the Okumu Forest Reserve. Journal of Ecology 44:83117.CrossRefGoogle Scholar
Khan, A. A. (ed.). 1982. The physiology and biochemistry of seed development, dormancy, and germination. Elsevier Biomedical Press, Amsterdam. 547 pp.Google Scholar
Kochummen, K. M. 1966. Natural plant succession after farming in Sungei Kroh. Malayan Forester 29:170181.Google Scholar
Kochummen, K. M. 1972. Sterculiaceae. Pp. 353382 in Whitmore, T. C. (ed.). Tree flora of Malaya. Volume 2. Longman Malaysia Sdn. Berhad, Kuala Lumpur.Google Scholar
Kochummen, K. M. 1978. Myrtaceae. Pp. 169254 in Ng, F. S. P. (ed.). Tree flora of Malaya. Volume 3. Longman Malaysia Sdn. Berhad, Kuala Lumpur.Google Scholar
Kochummen, K. M. & NG, F. S. P. 1977. Natural plant succession after farming in Kepong. Malaysian Forester 40:6178.Google Scholar
Koller, D. 1972. Environmental control of seed germination. Pp. 1101 in Kozlowski, T. T. (ed.). Seed biology. Volume 2. Academic Press, New York.Google Scholar
Lemmon, P. E. 1957. A new instrument for measuring forest overstory density. Journal of Forestry 55:667669.Google Scholar
Mayer, A. M. & Shain, Y. 1974. Control of seed germination. Annual Review of Plant Physiology 25:167193.CrossRefGoogle Scholar
NG, F. S. P. 1978. Strategies of establishment in Malayan forest trees. Pp. 129162 in Tomlinson, P. B. & Zimmermann, M. H. (eds). Tropical trees as living systems. Cambridge University Press, Cambridge.Google Scholar
NG, F. S. P. 1980. Germination ecology of Malaysian woody plants. Malaysian Forester 43:406437.Google Scholar
Oldeman, R. A. A. 1978. Architecture and energy exchange of dicotyledonous trees in the forest. Pp. 535560 in Tomlinson, P. B. & Zimmermann, M. H. (eds). Tropical trees as living systems. Cambridge University Press, Cambridge.Google Scholar
E., Ong J. & Dhanarajan, G. 1976. On a national park for Pulau Pinang. Malayan Nature Journal 29:277281.Google Scholar
E., Ong J. & K., Gong W. 1979. The Pantai Acheh Forest Reserve. Malayan Naturalist 32:1416.Google Scholar
Raich, J. W. 1987. Canopy openings, seed germination, and tree regeneration in Malaysian coastal hill dipterocarp forest. Ph.D. dissertation, Duke University, Durham, NC, USA. 154 pp.Google Scholar
Raich, J. W. in press. Seasonal and spatial variation in the light environment in a tropical dipterocarp forest and gaps. Biotropica in press.Google Scholar
Raich, J. W. & Christensen, N. L. 1989. Malaysian dipterocarp forest: tree seedling and sapling species composition and patterns of small-scale disturbance. National Geographic Research 5:348363.Google Scholar
Richards, P. W. 1952. The tropical rain forest. Cambridge University Press, Cambridge. 450 pp.Google Scholar
Ridley, H. N. 19221925. The flora of the Malay Peninsula. (5 volumes). L. Reeve & Co., Ltd, Covent Garden, U.K.CrossRefGoogle Scholar
Schulz, J. P. 1960. Ecological studies on rain forest in northern Suriname. North-Holland, Amsterdam. 267 pp.Google Scholar
Swaine, M. D. & Whitmore, T. C. 1988. On the definition of ecological species groups in tropical rain forests. Vegetatio 75:8186.CrossRefGoogle Scholar
Symington, C. F. 1933. The study of secondary growth on rain forest sites in Malaya. Malayan Forester 2:107117.Google Scholar
Valio, I. F. M. & Joly, C. A. 1979. Light sensitivity of the seeds on the distribution of Cecropia glaziovi Snethlage (Moraceae). Zeitschrift für Pflanzenphysiologie 91:371376.CrossRefGoogle Scholar
VÁzquez-Yanes, C. 1976. Seed dormancy and germination in secondary vegetation tropical plants: the role of light. Comparative Physiology and Ecology 1:3034.Google Scholar
VÁzquez-Yanes, C. 1980a. Light quality and seed germination in Cecropia obtusifolia and Piper auritum from a tropical rain forest in Mexico. Phyton 38:3335.Google Scholar
VÁzquez-Yanes, C. 1980b. Notas sobre la autoecología de los árboles pioneros de rápido crecimiento de la selva tropical lluviosa. Tropical Ecology 21:103112.Google Scholar
VÁzquez-Yanes, C. & Orozco-Segovia, A. 1982. Germination of the seeds of a tropical rain forest shrub, Piper hispidum Sw. (Piperaceae) under different light qualities. Phyton 42:143149.Google Scholar
VÁZquez-Yanes, C. & Orozco-Segovia, A. 1984. Ecophysiology of seed germination in the tropical humid forests of the world: a review. Pp. 3750 in Medina, E., Mooney, H. A. & Vázquez-Yanes, C. (eds). Physiological ecology of plants of the wet tropics. Dr W. Junk Publishers, The Hague, The Netherlands.CrossRefGoogle Scholar
VÁzquez-Yanes, C. & Smith, H. 1982. Phytochrome control of seed germination in the tropical rain forest pioneer trees Cecropia obtusifolia and Piper auritum and its ecological significance. New Phytologist 92:477485.CrossRefGoogle Scholar
Whitmore, T. C. 1978. Gaps in the forest canopy. Pp. 639655 in Tomlinson, P. B. & Zimmermann, M. H. (eds). Tropical trees as living systems. Cambridge University Press, Cambridge.Google Scholar
Whitmore, T. C. 1983. Secondary succession from seed in tropical rain forests. Forestry Abstracts 44:767779.Google Scholar
Whitmore, T. C. 1984. Tropical rainforests of the Far East. (2nd edition.) Oxford University Press, Oxford. 352 pp.Google Scholar
Williams-Linera, G. & Ewel, J. J. 1984. Effect of autoclave sterilization of a tropical andept on seed germination and seedling growth. Plant and Soil 82:263268.CrossRefGoogle Scholar
Wyatt-Smith, J. 1949. Natural plant succession. Malayan Forester 12:148152.Google Scholar
Wyatt-Smith, J. 1955. Changes in composition in early natural plant succession. Malayan Forester 18:4449.Google Scholar
Wyatt-Smith, J., Panton, W. P. & Mitchell, B. A. 1963. Manual of Malayan silviculture for inland forest. (2 volumes). Malayan Forest Record No. 23, Forestry Department, Peninsular Malaysia, Kuala Lumpur.Google Scholar