Growth dynamics of Tabebuia chrysantha, and their relationship with climatic factors in a dry and humid forest in southern Ecuador
Ganzhi Tacuri JO, Bräuning A (2012)
Publication Language: English
Publication Type: Conference contribution, Abstract of a poster
Publication year: 2012
Pages Range: 164
Conference Proceedings Title: Islands in land- and seascape: The challenges of fragmentation
Event location: Erlangen
ISBN: 978-3-00-037462-3
Open Access Link: http://www.soctropecol.eu/PDF/gtoe_Erlangen_2012.pdf
Abstract
The objective of our study is to evaluate tree growth of the deciduous tree species Tabebuia chrysantha (Bignoniaceae) in two different forest types of southern Ecuador under different climatic conditions, namely in a dry forest (Laipuna Natural Reserve) and a mountain cloud forest (Reserva Biologica San Francisco). To investigate the temporal dynamics of growth, high resolution electronic dendrometers were installed, measuring tree diameter changes in 30 minute intervals. Wood formation was studied by means of wood anatomical studies, obtaining micro cores in monthly intervals. The two independent sources of information complement each other since stem diameter variations may also be caused by changes in the hydrological status of a stem. The observed diurnal stem diameter fluctuations have been primarily controlled by radiation which increased the atmospheric vapor pressure deficit and the transpirational water loss of the trees. The formation of visible growth ring boundaries marked by a marginal parenchyma in the deciduous T. chrysantha has enabled us to detect the annual dynamic of growth, which is induced by the seasonality of the hydrological cycle in the dry forest. In the dry period, the trunk is shrinking and the cambium is in a state of dormancy.
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Ecuador (EC)How to cite
APA:
Ganzhi Tacuri, J.O., & Bräuning, A. (2012). Growth dynamics of Tabebuia chrysantha, and their relationship with climatic factors in a dry and humid forest in southern Ecuador. Poster presentation at Annual Conference of the Society for Tropical Ecology (gtö): Islands in land- and seascape: The challenges of fragmentation., Erlangen, DE.
MLA:
Ganzhi Tacuri, José Oswaldo, and Achim Bräuning. "Growth dynamics of Tabebuia chrysantha, and their relationship with climatic factors in a dry and humid forest in southern Ecuador." Presented at Annual Conference of the Society for Tropical Ecology (gtö): Islands in land- and seascape: The challenges of fragmentation., Erlangen Ed. Bräuning A., Richter M., Peters T., 2012.
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