Hostname: page-component-848d4c4894-r5zm4 Total loading time: 0 Render date: 2024-06-28T00:11:43.982Z Has data issue: false hasContentIssue false

Growth and photosynthesis of Aechmea magdalenae, a terrestrial CAM plant in a tropical moist forest, Panama

Published online by Cambridge University Press:  10 July 2009

William A. Pfitsch
Affiliation:
Smithsonian Tropical Research Institute, Aptdo 2072, Balboa, Republica de Panamá
Alan P. Smith
Affiliation:
Smithsonian Tropical Research Institute, Aptdo 2072, Balboa, Republica de Panamá

Abstract

Aechmea magdalenae is a terrestrial bromeliad that dominates areas of forest understorey on Barro Colorado Island, Panama. Nocturnal CO2 uptake via crassulacean acid metabolism was the primary means of carbon gain under well-watered conditions and all light regimes. The ability to maintain a positive carbon balance under conditions of very low light was demonstrated by laboratory measurements of photosynthesis and forest measurements of growth. Low-light-grown juvenile rosettes had the same daily net assimilation whether tested at photon flux densities of 15 or 300 μmol m−2 s−1 Growth rates of rosettes in treefall gaps were similar to those of plants in closed canopy forest. Growth rates of forest plants were increasingly correlated with canopy openness as the wet season progressed due to increased growth by gap plants, suggesting that water availability rather than light may limit growth during the annual dry season.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1988

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

LITERATURE CITED

Bartholomew, D. P. & Kadzimin, S. B. 1977. Pineapple. Pp. 113156 in Alvim, P. de T. & Kos-lowski, T. T. (eds). Ecophysiology of tropical crops. Academic Press, New York.CrossRefGoogle Scholar
Bjorkman, O., Ludlow, M. & Morrow, P. 1972. Photosynthetic performance of two rainforest species in their native habitat and analysis of their gas exchange. Carnegie Institute of Washington Yearbook 71:94102.Google Scholar
Black, C. C. 1973. Photosynthetic carbon fixation in relation to net CO2 uptake. Annual Review of Plant Physiology 24:253286.CrossRefGoogle Scholar
Bloom, A. J. & Troughton, J. H. 1979. High productivity and photosynthetic flexibility in CAM plants. Oecologia, Berlin 38:4550.CrossRefGoogle Scholar
Chazdon, R. L. & Fetcher, N. 1984. Photosynthetic light environments in a lowland tropical rainforest in Costa Rica. Journal of Ecology 72:553564.CrossRefGoogle Scholar
Chiariello, N. 1984. Leaf energy balance in the wet lowland tropics. Pp. 8598 in Medina, E., Mooney, H. A. & Vasquez-Yanes, C. (eds). Physiological ecology of plants in the wet tropics. Junk, The Hague.CrossRefGoogle Scholar
Croat, T. 1978. Flora of Barro Colorado Island. Stanford University Press, Stanford.Google Scholar
Fetcher, N. 1979. Water relation of five tropical tree species on Barro Colorado Island, Panama. Oecologia, Berlin 40:229233.CrossRefGoogle ScholarPubMed
Hubbell, S. P. & Foster, R. B. 1986. Biology, chance, and history and the structure of tropical rain forest tree communities. Pp. 314330 in Diamond, J. & Case, T. J. (eds). Community ecology. Harper and Row, New York.Google Scholar
Idso, S. B., Kimball, B. A., Anderson, M. G. & Szarek, S. R. 1986. Growth response of a succulent plant Agave vilmoriniana, to elevated CO2. Plant Physiology 80:796797.CrossRefGoogle Scholar
Kluge, M. & Ting, I. P. 1978. Crassulacean acid metabolism. Springer Verlag, New York.CrossRefGoogle Scholar
Knight, D. 1975. A phytosociological analysis of species rich tropical forest, Barro Colorado Island, Panama. Ecological Monographs 45:259284.CrossRefGoogle Scholar
Leigh, E. G. Jr, Rand, A. S. & Windsor, D. M. (eds). 1982. The ecology of a tropical forest. Smithsonian Institution Press, Washington, D.C.Google Scholar
Martin, C. E., Eades, C. A. & Pitner, R. A. 1986. Effects of irradiance on crassulacean acid metabolism in the epiphyte Tillandsia usneoides L. (Bromeliaceae). Plant Physiology 80:2326.CrossRefGoogle ScholarPubMed
Medina, E., Delgado, M., Troughton, J. H. & Medina, J. D. 1977. Physiological ecology of CO2 fixation in Bromeliaceae. Flora 166:137152.CrossRefGoogle Scholar
Medina, E. & Osmund, C. B. 1981. Temperature dependence of dark CO2 fixation and acid accumulation in Kalanchoe daigremontiana. Australian Journal of Plant Physiology 8:641649.Google Scholar
Mooney, H., Troughtin, J. H. & Berry, J. A. 1974. Arid climates and photosynthetic systems. Carnegie Institute of Washington Yearbook 73:793805.Google Scholar
Nobel, P. S. 1977. Water relations and photosynthesis of a barrel cactus Ferocactus acanthodes in the Colorado desert. Oecologia, Berlin 27:117133.CrossRefGoogle ScholarPubMed
Osmund, C. B., Winter, K. & Ziegler, H. 1982. Functional significance of different pathways of CO2 fixation in photosynthesis. Pp. 479547 in Lange, O. L., Nobel, P. S., Osmond, C. B. & Ziegler, H. (eds). Encyclopedia of Plant Physiology, New Series Vol. 12 B, Physiological plant ecology II. Water relations and carbon assimilation, Springer Verlag, Berlin.Google Scholar
Pearcy, R. W. & Calkin, H. W. 1983. Carbon dioxide exchange of C3 and C4 tree species in the understory of a Hawaiian forest. Oecologia, Berlin 58:2632.CrossRefGoogle ScholarPubMed
Robichaux, R. H. & Pearcy, R. W. 1980. Photosynthetic responses of C3 and C4, species from cool shaded habitats in Hawaii. Oecologia, Berlin 47:106109.CrossRefGoogle ScholarPubMed
Smith, J. A. C., Griffiths, H. & Luttge, U. 1986. Comparative ecophysiology of CAM and C3 bromeliads. I. The ecology of the Bromeliaceae in Trinidad. Plant, Cell and Environment 9:394410.Google Scholar
Szareck, S. R. & Ting, I. P. 1977. The occurrence of crassulacean acid metabolism among plants. Photosynthetica 11:330342.Google Scholar
Teeri, J. A., Stowe, L. G. & Murawski, D. A. 1978. The climatology of two succulent plant families: Cactaceae and Crassulaceae. Canadian Journal of Botany 56:17501758.CrossRefGoogle Scholar
Winter, K. 1985. Crassulacean Acid Metabolism. Pp. 329387 in Barber, I. & Baker, N. R. (eds). Photosynthetic mechanisms and the environment, Elsevier Publications.Google Scholar
Winter, K., Wallace, B. J., Stocker, G. C. & Roksamdic, Z. 1983. Crassulacean acid metabolism in Australian vascular epiphytes and some related species. Oecologia, Berlin 57:129141.CrossRefGoogle ScholarPubMed
Winter, K., Osmund, C. B., & Hubick, K. T. 1986. Crassulacean Acid Metabolism in the shade. Studies on an epiphytic fern, Pyrrosia longifolia and other rainforest species from Australia. Oecologia, Berlin 68:224230.CrossRefGoogle Scholar