Climatic Response of Cedrela fissilis Radial Growth in the Ombrophilous Mixed Forest, Paraná, Brazil

Abstract

We examined the climatic response of Cedrela fissilis radial growth based on precipitation, air relative humidity, temperature and monthly thermal amplitude. It was intended to assess how the secondary growth of C. fissilis is influenced by the climatic variables and which one are the best growth predictors in Ombrophilous Mixed Forest, southern Brazil. Wood cores were processed using classical dendrochronology methodology. Principal Components Analysis, Generalized Linear Models and correlation were used to explore the relationship between radial growth and climate. Our results indicated that the best radial growth predictor is the temperature: the seasonal behavior, under well-watered conditions, seems to have a dominant effect on growth responses. Changes in tree growth corresponding to an increase in temperatures suggest a sensitivity of the species to climate changes. These results are important to help understand how the global warming may influence long-lived pioneer tree growth.

Dendrochronology of Two Forest Species in the Urban Area of the City of Puerto Maldonado, Peru

“…Regarding the growth rings of the C. fissilis species in the urban area of Puerto Maldonado, various authors in a very similar way have described the marking of the growth rings of this species, mainly in natural forests, which are characterized by presenting the marginal parenchyma with semicircular porosity (large vessels lying in the marginal parenchyma) (MARCATI; ANGYALOSSY; EVERT, 2006;MARCON et al 2019;PAREDES;LÓPEZ;NAVARRO, 2016;SCHÖNGART et al 2017;LISI, 2000). These macroscopic anatomical descriptions of growth rings are similar to other species of the genus Cedrela such as the species of C. odorata, with an extensive study on their growth rings (BRIENEN; ZUIDEMA; MARTÍNEZ, 2010;DÜNISCH;BAUCH;BRACAMONTE, 2002;WORBES, 1999).…”

“…because the samples from Colombia are from a relic of tropical dry forest, and being a 70-year chronology. In the case of C. fissilis in a seasonal forest (Paraná), they found an intercorrelation of the series of 0.31 and in the urban area studied was 0.51 (MARCON et al, 2019). In the case of C. fissilis, the variation can be explained because the study in Brazil was in a Mixed Ombrophyllous Forests (MOF), with these trees having a chronology of 123 years.…”

“…Cham. grows naturally in the urban area of Puerto Maldonado, and together with C. fissilis, have shown potential for dendrochronological studies in tropical forests (BRICEÑO;RANGEL;BOGINO, 2016;PAREDES, LÓPEZ;NAVARRO, 2016;MARCON et al 2019), mainly because they have good anatomical delimitations of their growth rings in the phenology as they are both deciduous species, showing cross-dating and correlations between the growth rings of the two species (STAHLE et al, 1999).…”