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Comparative biology of Neotropical epiphytic and saxicolous Tillandsia species: population structure

Published online by Cambridge University Press:  10 July 2009

Bradley C. Bennett
Bradley C. Bennett
Affiliation:
Department of Biology, University of North Carolina, Chapel Hill, North Carolina 27599-3280, USA
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Abstract

In comparing the population structure of epiphytic and saxicolous Tillandsia species I found no significant differences between polycarpic species. Epiphytic T. ionochroma populations had a higher seedling:adult ratio than saxicolous T. ionochroma populations, but the difference was not statistically significant. Tillandsia ultriculala, a monocarpic epiphyte, had a significantly higher seedling:adult ratio than the polycarpic species. T. utriculata's higher ratio may result from its greater seed production and lack of vegetative propagation. Unlike the polycarpic species, all adult-size rosettes grow from seeds in T. utriculata. Tillandsia sphaerocephala, an obligate saxicole, occurred in larger clusters (i.e. more rosettes per genet) than T. ionochroma. The increased tendency for vegetative reproduction in T. sphaerocephala suggests that spatial patchiness is less of a constraint than with epiphytes.

Keywords

BromeliaceaedemographyepiphytesPerupopulation structuresouthern FloridaTillandsia
Type
Research Article
Information
Journal of Tropical Ecology , Volume 7 , Issue 3 , August 1991 , pp. 361 - 371
Copyright
Copyright © Cambridge University Press 1991

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References

LITERATURE CITED

Abrahamson, W. G. 1975. Reproductive strategies in dewberries. Ecology 56:721–726.CrossRefGoogle Scholar
Bennett, B. C. 1986. Palchiness, diversity, and abundance relationships of vascular epiphytes. Selbyana 9:70–75.Google Scholar
Bennett, B. C. 1987. Spatial distribution of Catopsis and Guzmania (Bromeliaceae) in southern Florida. Bulletin of the Torrey Botanical Club 114:265–271.Google Scholar
Bennett, B. C. 1988. A comparison of life history traits in epiphytic and saxicolous species of Tillandsia (Bromeliaceae) from Ecuador and Peru. PhD dissertation, Department of Biology, University of North Carolina, Chapel Hill, North Carolina.Google Scholar
Benzing, D. H. 1981. The population dynamics of Tillandsia circinnata (Bromeliaceae): Cypress crown colonics in southern Florida. Selbyana 5:256–263.Google Scholar
Holler, L. C. & Abrahamson, W. G. 1977. Seed and vegetative reproduction in relation to density in Fragaria virginiana (Rosaceae). American Journal of Botany 64:1003–1007.Google Scholar
Ogden, J. 1974. The reproductive strategy of higher plants. II. The reproductive strategy of Tussilago farfara L. Journal of Ecology 62:291–324.CrossRefGoogle Scholar
Pelton, J. 1953. Studies on the life history of Symphoricarpos occidentalis Hook. In Minnesota Ecological Monographs 23:17–39.Google Scholar
Sacchi, C. F. 1987. Variability in dispersal ability of common milkweed, Asclepias syriaca, seeds. Oikos 49:191–198.CrossRefGoogle Scholar
Wilkinson, L. 1986. System: The System for statistics. Systat, Inc., Evanston, IL.Google Scholar