Please use this identifier to cite or link to this item: http://cicy.repositorioinstitucional.mx/jspui/handle/1003/1600
Light microhabitats, growth and photosynthesis of an epiphytic bromeliad in a tropical dry forest
Sandra Edith Cervantes Arango
Eric Alexander Graham Walls
José Luis Andrade Torres
Acceso Abierto
Atribución-NoComercial-SinDerivadas
HEAT CONDUCTION RATE 
PHOTOINHIBITION 
TILLANDSIA BRACHYCAULOS 
TROPICAL DRY FOREST 
VERTICAL DISTRIBUTION YUCATAN 
YUCATAN
In the tropical dry forest of Dzibilchaltún, Yucatan, Mexico, light microhabitats, tissue acidity changes, chlorophyll fluorescence and growth were investigated for the epiphytic bromeliad Tillandsia brachycaulos Schltdl. Most individuals occurred in sites between 20 and 60% of the height of the tree, and directly on the main trunk or branches closed to the main trunk. During the dry season, individuals received about nine times more photon flux density (PFD) than during the rainy season. Individuals that occurred under 30–59% of the daily ambient PFD showed greater leaf length increase and monthly leaf production, and produced more flowers than individuals in the brighter (>60% of ambient PFD) and the darker (11–29% of ambient PFD) light microhabitats. Well-watered plants acclimated to deep shade (6% of ambient PFD) showed values of tissue acidity similar to plants under higher light treatments. Well-watered plants under 60% of daily ambient PFD showed low values of maximum quantum efficiency at midday during most of the year but showed similar values of tissue acidity than plants under 6 and 30% of ambient PFD. Leaf temperatures of plants in low sites within the canopy and on the forest floor were significantly higher than the air during about 1 h, indicating that those plants could not dissipate the excess of heat. Individuals located in the most shaded microhabitats could also receive less amount of water from rainfall and dew. Therefore, it would be less damaging for this epiphytic bromeliad to occur in the most exposed microhabitats than in the most shaded microhabitats in this tropical dry forest.
2005
Artículo
Plant Ecology, 179(1), 107-118, 2005
Español
Cervantes, S. E., Graham, E. A., & Andrade, J. L. (2005). Light microhabitats, growth and photosynthesis of an epiphytic bromeliad in a tropical dry forest. Plant Ecology, 179(1), 107-118.
ECOLOGÍA VEGETAL
Versión publicada
publishedVersion - Versión publicada
Appears in Collections:Artículos de Investigación Arbitrados

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