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The implications of climate and gap microclimate for seedling growth conditions in a Bornean lowland rain forest

  • Nick Brown (a1)

Present theories of tropical rain forest regeneration dynamics suggest that different tree species specialize on the microclimates of different sizes of canopy gap. A detailed analysis of the microclimates of closed forest and 10 canopy gaps of different sizes was carried out in lowland dipterocarp rain forest, Sabah, Malaysian Borneo. It reveals that gaps exhibit considerable spatial and temporal variation in microclimate. As a consequence the relationship between microclimate and gap sizes is not simple. Gaps of the same size do not necessarily have the same microclimate and may favour the growth of different seedling species. Chance location and timing of gap creation play an important role in regeneration dynamics.

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Baillie I. C. 1976. Further studies on drought in Sarawak, E. Malaysia. Journal of Tropical Geography 43:2029.
Barton A. M., Fetcher N. & Redhead S. 1989. The relationship between treefall gap size and light flux in a Neotropical rain forest in Costa Rica. Journal of Tropical Ecology 5:437439.
Beaman R. S., Beaman J. H., March C. W. & Wood P. V. 1985. Drought and forest fires in Sabah in 1983. Sabah Society Journal 8:1030.
Becker P., Rabenold P. E., Idol J. R. & Smith A. P. 1988. Water potential gradients for gaps and slopes in a Panamanian tropical moist forest's dry season. Journal of Tropical Ecology 4:173184.
Brown N. D. 1990. Dipterocarp regeneration in tropical rain forest gaps of different sizes. DPhil Thesis, University of Oxford.
Brown N. D. & Whitmore T. C. 1992. Do dipterocarp seedlings really partition tropical rain forest gaps? Philosophic Transactions of the Royal Society London B 335:369378.
Brunig E. F. 1969. On the seasonality of drought in the lowlands of Sarawak. Erdkunde 23:127133.
Chazdon R. L. & Fetcher N. 1984. Photosynthetic light environments in a lowland tropical rain forest in Costa Rica. Journal of Ecology 72:553564.
Denslow J. S. 1980. Gap partitioning among tropical rain forest trees. Biotropica 12 (suppl.):4755.
Denslow J. S. 1987. Tropical rain forest gaps and tree species diversity. Annual Review of Ecology and Systematics 18:431451.
Evans G. C. 1939. Ecological studies on the rain forest of Southern Nigeria: II The atmospheric environmental conditions. Journal of Ecology 27:436482.
Evans G. C. & Coombe D. E. 1959. Hemispherical and woodland canopy photography and light climate. Journal of Ecology 47:103113.
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.
Hartshorn G. H. S. 1978. Tree falls and tropical forest dynamics. In Tomlinson P. B. & Zimmermann M. H. (eds). Tropical trees as living systems, Cambridge, University Press.
Hill R. D. 1966. Microclimatic observations at Bukit Timah Forest Reserve, Singapore. Malayan Forester 29:7886.
Leighton M. & Wirawan N. 1986. Catastrophic drought and fire in Borneo rain forests associated with the 1982–83 El Nino Southern Oscillation event. Pp. 83107 in Prance G. T. (ed.). Tropical rain forests and the world atmosphere. Boulder Colorado, Westview.
Lieberman M., Lieberman D. & Peralta R. 1989. Forests are not just Swiss cheese: canopy stereogeometry of non-gaps in tropical forests. Ecology 70:550552.
Ludlow M. M. 1987. Light stress at high temperatures. In Kyle D. J., Osmond C. B. & Arntzen C. J. (eds). Photoinhibition, Elsevier Science Publishers.
Orians G. H. 1982. The influence of treefalls in tropical forests on tree species richness. Tropical Ecology 23:255279.
Pearcy R. W. 1983. The light environment and growth of C3 and C4 tree species in the understorey of a Hawaiian forest. Oecologia 58:1925.
Pickett S. T. A. 1983. Differential adaption of tropical tree species to canopy gaps and its role in community dynamics. Tropical Ecology 24:6884.
Pinker R. 1980. The microclimate of a dry tropical forest. Agricultural Meteorology 22:249265.
Popma J., Bongers F., Martinez-Ramos M. & Veneklaas E. 1988. Pioneer species distribution in treefall gaps in Neotropical rain forest; a gap definition and its consequences. Journal of Tropical Ecology 4:7788.
Raich J. W. 1987. Canopy openings, seed germination and tree regeneration in a Malaysia coastal hill dipterocarp forest. PhD Thesis, Duke University.
Raich J. W. 1989. Seasonal and spatial variation in the light environment in a tropical dipterocarp forest and gaps. Biotropica 21:299302.
Rich P. M. 1988. Video image analysis of hemispherical canopy photography. In Mausel P. W. (ed.). First Special Workshop on Videography. American Society for Photogrammetry and Remote Sensing, Terre Haute, Indiana.
Richards P. W. 1983. The three dimensional structure of tropical rain forest. In Sutton S. L., Whitmore T. C. & Chadwick A. C.Tropical rainforest ecology and management, (eds). Oxford, Blackwell.
Sanford R. L., Braker H. E. & Hartshorn G. S. 1986. Canopy openings in a primary Neotropical lowland forest. Journal of Tropical Ecology 2:277282.
Sasaki S. & Mori T. 1981. Growth responses of dipterocarp seedlings to light. Malaysian Forester 44:319345.
Schulz J. P. 1960. Ecological studies on the rain forest of northern Surinam. The Vegetation of Surinam Vol 2. North-Holland Amsterdam.
Smith H. 1982. Light quality, photoreception and plant strategy. Annual Review of Plant Physiology 33:481518.
Snedecor G. W. & Cochran W. G. 1967. Statistical Methods (sixth edition). Ames Iowa, USA, Iowa State University Press.
Takenaka A. 1988. An analysis of solar beam penetration through circular gaps in canopies of uniform thickness. Agricultural and Forest Meteorology 42:307320.
Torquebiau E. F. 1988. Photosynthetically active radiation environment, patch dynamics and architecture in a tropical rain forest in Sumatra. Australian Journal of Plant Physiology 15:327342.
Whitmore T. C. 1978. Gaps in the forest canopy. Pages 639655 in Tropical trees as living systems. Tomlinson P. B. & Zimmermann M. H. (eds). Cambridge University Press.
Whitmore T. C. 1984. Gap size and species richness in tropical rain forests. Biotropica 16:239.
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Journal of Tropical Ecology
  • ISSN: 0266-4674
  • EISSN: 1469-7831
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