02809naa a2200277 a 450000100080000000500110000800800410001902400380006010000220009824501250012026000090024552019440025465000310219865000230222965300250225265300180227765300290229565300220232465300150234670000220236170000250238370000190240870000190242770000190244677300660246521064502019-10-30       2019    bl uuuu     u00u1 u    #d7 a10.1016/j.foreco.2019.02.0302DOI1 aANDRADE, V. H. F.  aGrowth models for two commercial tree species in upland forests of the Southern Brazilian Amazon.h[electronic resource]  c2019  aDespite all efforts to promote sustainable use of timber resources in tropical forests, the current management criteria still require adjustments at a species level, considering specific growth patterns and ecological features. Forest management in upland forests (terra firme) of the Brazilian Amazon region generally applies for all commercial tree species a common minimum logging diameter (MLD) of 50 cm and a felling cycle (FC) varying according to the harvest intensity between 25 and 35 years.. In this study, we define species-specific FCs and MLDs for the two commercial tree species Hymenaea courbaril L. (Fabaceae) and Handroanthus serratifolius (Vahl) S.O. Grose (Bignoniaceae) from the terra firme of the Southern Brazilian Amazon, applying growth models based on the relationships between estimated tree age, diameter, height and volume. A total of 37 transversal crosssections (20 stem discs from Hymenaea and 17 from Handroanthus) were obtained at a height of 20–60 cm above soil level in a private forest concession close to the municipality of Novo Aripuanã in the southern region of the Amazonas state. The two species are common in terra firme forests and have high wood densities of 0.76–0.96 g cm?3 (H. courbaril) and 0.85–1.08 g cm?3 (H. serratifolius). The mean age of H. courbaril and H. serratifolius, estimated by ring counting, varied from 104 to 241 years and both species had similar mean diameter increments of 3.9 ± 0.5mmyear?1 and 4.1 ± 0.6mmyear?1, respectively. Both species present similar tree growth in diameter, height and volume resulting in a FC of 24.2 years and a MLD of 64.9 cm for H. courbaril, and a FC of 26.0 years and a MLD of 69.5 cm for H. serratifolius. These results demonstrate the need to adjust the selective logging systems practiced in the Brazilian Amazon region towards a species-specific management of timber species to increase the sustainability of selective logging.  aHandroanthus serratifolius  aHymenaea Courbaril  aAneis de crescimento  aFelling cycle  aMinimum logging diameter  aSelective logging  aTree rings1 aMACHADO, S. do A.1 aFIGUEIREDO FILHO, A.1 aBOTOSSO, P. C.1 aMIRANDA, B. P.1 aSCHÖNGART, J.  tForest Ecology and Managementgv. 438, p. 215-223, Apr. 2019.