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Canopy closure and the distribution of tropical forest tree species at La Selva, Costa Rica

Published online by Cambridge University Press:  10 July 2009

Milton Lieberman ,
Diana Lieberman ,
Rodolfo Peralta  and
Gary S. Hartshorn
Milton Lieberman
Affiliation:
Department of Biology, University of North Dakota, Grand Forks, ND 58202-9019, USA, and Apartado 35, Santa Elena de Monteverde, Puntarenas, Costa Rica
Diana Lieberman
Affiliation:
Department of Biology, University of North Dakota, Grand Forks, ND 58202-9019, USA, and Apartado 35, Santa Elena de Monteverde, Puntarenas, Costa Rica
Rodolfo Peralta
Affiliation:
Centro Cientifico Tropical, Apartado 8-3870, and Portico, S.A., San Jose, Costa Rica
Gary S. Hartshorn
Affiliation:
World Wildlife Fund, 1250 24th St., NW, Washington, DC 20037, USA
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Abstract

An index of canopy closure was used to estimate closure above the crowns of all trees ≥ 10 cm dbh in 11.11 ha of undisturbed lowland tropical forest at La Selva, Costa Rica. To correct for the efFects of tree size on canopy closure, we used the residual of the regression of the canopy closure index on tree size. Analyses were carried out for the 104 species which had ≥ individuals; a total of 3224 trees were included. Nine species were found to have their crowns in significantly more open conditions than expected by chance and five species were found to have their crowns in significantly more closed conditions than expected by chance (P < 0.05). The remaining 90 species (86.5% of the assemblage) were distributed at random with respect to canopy closure, occupying the available light conditions indiscriminately. Species occurring under higher light levels did not show a narrower range of tolerance than did other species. Most species were found to occur over a substantial proportion of the canopy closure continuum present in the stand; overlap among the great majority of species in the assemblage is extensive. The results support the view that tropical forests comprise assemblages of generalist tree species, and raise questions about the classic notions of gap-phase dynamics.

Keywords

canopy closureCosta Ricaforest structuregapshabitat preferenceLa Selvalightniche breadthshade tolerancetropical forest
Type
Research Article
Information
Journal of Tropical Ecology , Volume 11 , Issue 2 , May 1995 , pp. 161 - 177
Copyright
Copyright © Cambridge University Press 1995

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References

LITERATURE CITED

Bjorkman, O. & Ludlow, M. M. 1972. Characterizations of the light climate on the floor of a Queensland rainforest. Carnegie Institute of Washington Yearbook 71:85–94.Google Scholar
Brandani, A., Hartshorn, G. S. & Orians, G. H. 1988. Internal heterogeneity of gaps and species richness in Costa Rican tropical wet forest. Journal of Tropical Ecology 4:99–119.CrossRefGoogle Scholar
Brokaw, N. V. L. 1985. Gap-phase regeneration in a tropical forest. Ecology 66:682–687.CrossRefGoogle Scholar
Brokaw, N. V. L. 1987. Gap-phase regeneration of three pioneer tree species in a tropical forest. Journal of Ecology 75:9–19.CrossRefGoogle Scholar
Chazdon, R. L. & Fetcher, N. 1984a. Photosynthetic light environments in a lowland tropical rain forest in Costa Rica. Journal of Ecology 72:533–564.CrossRefGoogle Scholar
Chazdon, R. L. & Fetcher, N. 1984b. Light environments of tropical forests. Pp. 27–36 in Medina, E., Mooney, H. A. & Vasquez-Yanes, C. (eds). Physiological ecology of plants in the wet tropics. Dr W. Junk Publications, Boston, MA, USA.CrossRefGoogle Scholar
Denslow, J. S. 1980. Gap partitioning among tropical rainforest trees. Biotropica 12 (Supplement): 47–55.CrossRefGoogle Scholar
Denslow, J. S. 1987. Tropical rain forest gaps and tree species diversity. Annual Review of Ecology & Systematics 18:431–451.CrossRefGoogle Scholar
Denslow, J. S. & Hartshorn, G. S. 1994. Treefall gap environments and forest dynamic processes. Pp. 120–127 in McDade, L. A., Bawa, K. S., Hespenheide, H. A. & Hartshorn, G. S. (eds). La Selva: ecology and natural history of a tropical rainforest. University of Chicago Press, Chicago, IL, USA.Google Scholar
Denslow, J. S., Schultz, J. C., Vitousek, P. M. & Strain, B. R. 1990. Growth responses of tropical shrubs to treefall gap environments. Ecology 71:165–179.CrossRefGoogle Scholar
De Steven, D. 1988. Light gaps and long-term seedling performance of a neotropical canopy tree (Dipteryx panamensis, Leguminosae). Journal of Tropical Ecology 4:407–411.CrossRefGoogle Scholar
Fisher, B. L., Howe, H. F. & Wright, S. J. 1991. Survival and growth of Virola surinamensis yearlings: water augmentation in gap and understorey. Oecologia 86:292–297.CrossRefGoogle Scholar
Hartshorn, G. S. 1978. Treefalls and tropical forest dynamics. Pp. 617–638 in Tomlinson, P. B. & Zimmermann, M. H. (eds). Tropical trees as living systems. Cambridge University Press, New York, NY, USA.Google Scholar
Hartshorn, G. S. 1980. Neotropical forest dynamics. Biotropica 12 (Supplement): 23–30.CrossRefGoogle Scholar
Hartshorn, G. S. 1983. Plants: introduction. Pp. 118–157 in Janzen, D. H. (ed.). Costa Rican natural history. University of Chicago Press, Chicago, IL, USA.Google Scholar
Hubbell, S. P. & Foster, R. B. 1986a. Canopy gaps and the dynamics of a neotropical forest. Pp. 77–96 in Crawley, M. J. (ed.). Plant ecology. Blackwell Scientific, Oxford. UK.Google Scholar
Hubbell, S. P. & Foster, R. B. 1986b. Biology, chance, and history and the structure of tropical rainforest tree communities. Pp. 314–329 in Diamond, J. & Case, T. J. (eds). Community ecology. Harper & Row, New York, NY, USA.Google Scholar
Johns, R. J. 1986. The instability of the tropical ecosystem in New Guinea. Blumea 31:341–371.Google Scholar
Kennedy, D. N. & Swaine, M. D. 1992. Germination and growth of colonizing species in artificial gaps of different sizes in dipterocarp rain forest. Philosophical Transactions of the Royal Society of London B 335:357–366.Google Scholar
Lieberman, D., Hartshorn, G. S., Lieberman, M. & Peralta, R. 1990. Forest dynamics at La Selva Biological Station, Costa Rica, 1969–1985. Pp. 509–521 in Gentry, A. H. (ed.). Four neotropical rainforests. Yale University Press, New Haven, CT, USA.Google Scholar
Lieberman, D. & Lieberman, M. 1987. Forest tree growth and dynamics at La Selva, Costa Rica (1969–1982). Journal of Tropical Ecology 3:347–358.CrossRefGoogle Scholar
Lieberman, D., Lieberman, M., Hartshorn, G. S. & Peralta, R. 1985a. Growth rates and age-size relationships of lowland tropical wet forest trees in Costa Rica. Journal of Tropical Ecology 1:97–109.CrossRefGoogle Scholar
Lieberman, D., Lieberman, M., Peralta, R. & Hartshorn, G. S. 1985b. Mortality patterns and stand turnover rates in wet tropical forest in Costa Rica. Journal of Ecology 73:915–924.CrossRefGoogle Scholar
Lieberman, M. & Lieberman, D. 1991. No matter how you slice it – a reply to Publicover and Vogt. Ecology 72:1900–1902.CrossRefGoogle Scholar
Lieberman, M. & Lieberman, D. 1994. Patterns of density and dispersion of forest trees. Pp. 105–119 in McDade, L. A., Bawa, K. S., Hespenheide, H. A. & Hartshorn, G. S. (eds). La Selva: ecology and natural history of a tropical rainforest. University of Chicago Press, Chicago, IL, USA.Google Scholar
Lieberman, M., Lieberman, D., Hartshorn, G. S. & Peralta, R. 1985c. Small-scale altitudinal variation in lowland wet tropical forest vegetation. Journal of Ecology 73:505–516.CrossRefGoogle Scholar
Lieberman, M., Lieberman, D. & Peralta, R. 1989. Forests are not just Swiss cheese: canopy stereogeometry of non-gaps in tropical forests. Ecology 70:550–552.CrossRefGoogle Scholar
Martinez-Ramos, M. 1985. Claros, ciclos vitales de las arboles tropicales y regeneracion natural de las selvas altas perennifolias. Pp. 191–239 in Gomez-Pompa, A. & del Amo, R. S. (eds). Investigaciones sobre la regeneracion de selvas altas en Veracruz, Mexico, Vol. II. Instituto Nacional de Investagaciones Sobre Recursos Bioticos, Mexico.Google Scholar
Okali, D. U. U. & Dike, M. C. In press. Tree seedlings in gaps and under closed canopy at Omo Biosphere Reserve, South-Western Nigeria. In Swaine, M. D. et al. (eds). Ecology of tropical forest tree seedlings. UNESCO, Paris.Google Scholar
Orians, G. H. 1982. The influence of tree-falls in tropical forests on tree species diversity. Tropical Ecology 23:255–279.Google Scholar
Popma, J., Bongers, F. & Meave del Castillo, J. 1988. Patterns in the vertical structure of the tropical lowland rain forest of Los Tuxtlas, Mexico. Vegetatio 74:81–91.CrossRefGoogle Scholar
Putz, F. E. 1983. Treefall pits and mounds, buried seeds, and the importance of soil disturbance to pioneer trees on Barro Colorado Island, Panama. Ecology 64:1069–1074.CrossRefGoogle Scholar
Raich, J. W. & Gong, W. K. 1990. Effects of canopy opening on tree seed germination in a Malaysian dipterocarp forest. Journal of Tropical Ecology 6:203–217.CrossRefGoogle Scholar
Rich, P. M., Clark, D. B., Clark, D. A. & Oberbauer, S. F. In press. Long-term study of solar radiation regimes in a tropical wet forest using quantum sensors and hemispherical photography. Agriculture and Forest Meteorology.Google Scholar
Richards, P. W. 1952. The tropical rain forest. Cambridge University Press, Cambridge, UK.Google Scholar
Ricklefs, R. E. 1977. Environmental heterogeneity and plant species diversity: a hypothesis. American Naturalist 111:376–381.CrossRefGoogle Scholar
Sanford, R. L. Jr, Braker, H. E. & Hartshorn, G. S. 1986. Canopy openings in a primary neotropical lowland forest. Journal of Tropical Ecology 2:227–282.CrossRefGoogle Scholar
Swaine, M. D. & Whitmore, T. C. 1988. On the definition of ecological species groups in tropical rain forests. Vegetatio 75:81–86.CrossRefGoogle Scholar
Uhl, C., Clark, K., Dezzeo, N. & Maquirino, P. 1988. Vegetation dynamics in Amazonian treefall gaps. Ecology 69:751–763.CrossRefGoogle Scholar
Welden, C. W., Hewett, S. W., Hubbell, S. P. & Foster, R. B. 1991. Sapling survival, growth, and recruitment: relationship to canopy height in a neotropical forest. Ecology 72:35–50.CrossRefGoogle Scholar
Whitmore, T. C. 1974. Change with time and the role of cyclones in tropical rain forest on Kolombangara, Solomon Islands. Commonwealth Forestry Paper 46.Google Scholar
Whitmore, T. C. 1978. Gaps in the forest canopy. Pp. 639–655 in Tomlinson, P. B. & Zimmermann, M. H. (eds). Tropical trees as living systems. Cambridge University Press, New York, NY, USA.Google Scholar
Whitmore, T. C. 1989. Canopy gaps and the two major groups of forest trees. Ecology 70:536–538.CrossRefGoogle Scholar
Yih, K., Boucher, D. H., Vandermeer, J. H. & Zamora, N. 1991. Recovery of the rain forest of southeastern Nicaragua after destruction by Hurricane Joan. Biotropica 23:101–113.CrossRefGoogle Scholar