Revista de Biología Tropical
versión On-line ISSN 0034-7744versión impresa ISSN 0034-7744
Resumen
ESCOBAR, Milton; MARIN, Adriana; GIRALDO, Jorge-A. y RAMIREZ*, Jorge. Dendrochronological potential of three Podocarpaceae species from the Andean Cordillera. Rev. biol. trop [online]. 2023, vol.71, n.1, e54971. ISSN 0034-7744. http://dx.doi.org/10.15517/rev.biol.trop..v71i1.54971.
Introduction:
Little is known about the dendrochronological potential of Podocarpaceaes in the tropics. Objective: To explore the dendrochronological potential of three Podocarpaceae species: Retrophyllum rospigliosii, Podocarpus oleifolius, and Prumnopitys harmsiana.
Methods:
From a non-managed plantation in the Andean cordillera in Colombia, a total of 88 trees were analyzed: 30 samples of cross-sections of R. rospigliosii, and 30 and 28 samples of P. oleifolius and P. harmsiana, respectively, obtained with an increment borer. Samples were processed according to standard dendrochronological methods.
Results:
The anatomical characteristics of the growth rings of the three species are similar, with a simple conifer anatomy with radially oriented tracheids. Since the known age of the plantation coincides with the number of tree rings this is strong evidence of annual tree-ring frequency of R. rospigliosii and P. oleifolius which also showed a satisfactory cross-dating with an average inter-correlation of 0.55 (r-Pearson). For P. harmsiana, it was not possible to build a tree-ring series from the collected samples. R. rospigliosii and P. oleifolius standardized ring-width chronologies showed a relationship with the instrumental records of rainfall and temperature, indicating these species may be promising further studies.
Conclusions:
Dendrochronological research with Podocarpaceae species could be carried out successfully with R. rospigliosii and P. oleifolius but not with P. harmsiana.
Palabras clave : cross-dating; dendrochronology; Podocarpus oleifolius; Prumnopitys harmsiana; Retrophyllum rospigliosii..