Radial stem variations of Tabebuia chrysantha (Bignoniaceae) in different tropical forest ecosystems of southern Ecuador
Volland F, Bräuning A, Ganzhi O, Peters T, Maza Chamba H (2011)
Publication Language: English
Publication Type: Journal article, Original article
Publication year: 2011
Journal
Publisher: Springer Verlag (Germany)
Book Volume: 25
Pages Range: 39-48
Journal Issue: 1
DOI: 10.1007/s00468-010-0461-6
Abstract
Stem diameter increments of the broadleaved deciduous tree species Tabebuia chrysantha were measured with high-resolution dendrometers in a tropical lower montane forest and in a dry forest in southern Ecuador, the latter showing a distinct dry season. Those analyses were complemented by wood anatomical studies on regularly collected microcores to determine the season of active cambial growth and the time of formation of annual growth boundaries. The length of the cambial active period varied between 3 and 7 months at the tropical lower montane forest and 2 and 4 months in the dry forest, respectively. During dry days, amplitudes of daily stem diameter variations correlated with vapour pressure deficit. During October and November, inter-annual climate variations may lead to dry and sunny conditions in the tropical lower montane forest, causing water deficit and stem diameter shrinkage in T. chrysantha. The results of the climate-growth analysis show a positive relationship between tree growth and rainfall as well as vapour pressure deficit in certain periods of the year, indicating that rainfall plays a major role for tree growth. © 2010 Springer-Verlag.
Authors with CRIS profile
Franziska Volland
Lehrstuhl für Geographie (Physische Geographie)
Achim Bräuning
Lehrstuhl für Geographie (Physische Geographie)
Thorsten Peters
Institut für Geographie
Involved external institutions
Ecuador (EC)How to cite
APA:
Volland, F., Bräuning, A., Ganzhi, O., Peters, T., & Maza Chamba, H. (2011). Radial stem variations of Tabebuia chrysantha (Bignoniaceae) in different tropical forest ecosystems of southern Ecuador. Trees-Structure and Function, 25(1), 39-48. https://doi.org/10.1007/s00468-010-0461-6
MLA:
Volland, Franziska, et al. "Radial stem variations of Tabebuia chrysantha (Bignoniaceae) in different tropical forest ecosystems of southern Ecuador." Trees-Structure and Function 25.1 (2011): 39-48.
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