Resumo O objetivo do estudo foi ajustar modelos de volume e crescimento e analisar os incrementos de clones e material seminal de Teca aos seis anos influenciados por quebra de copa. Foram medidos o diâmetro à altura do peito (DAP) e a altura comercial (hc) e total (h) de árvores de teca em um experimento de blocos casualizados com cinco tratamentos clonais e um seminal de Teca. Foram cubadas 10 árvores de cada tratamento e comparada as médias dos volumes, ajustando modelos de volume e crescimento (DAP, h e volume). O modelo de Schumacher-Hall foi escolhido para o clone 68 e para os demais tratamentos o de Prodan Modificado. O crescimento foi expresso pelo modelo de Moissev para DAP e volume e Backman para altura. O ICA e IMA para DAP e h são afetados negativamente por danos na copa e os clones tiveram os maiores ganhos em produtividade, destacando o clone 61.

Abstract In this study, the main important plants collected by the stingless bee Trigona fulviventris were determined in a secondary dry forest fragment in Pocosol, Guanacaste during the rainy season. A total of 26 pollen types were obtained by collecting individuals of Trigona fulviventris these corresponded mainly representative species of herbs and shrubs. In addition, although there was unusual phenology through the year of the study, a collection of plants was carried out in order to covering the most important species according within the flight range of this species (300-500 m). For the palinological analysis a combination of methods were used and the results showed a convergence of 27% of coincidence when comparing both pollen collected by the bees and plant sources. In addition, the presence of the most representative species at the time of study at the site (Baltimora recta and Dorstenia contrajerva) was determined using ecological indexes. Moreover it was able to demonstrate a generalist behavior of T. fulviventris regarding the search for limited nutritional. The aim of the study was to adjust volume and growth models and analyze the increments of six years old teak clones and seminal material influenced by canopy breakage. Diameter at breast height (DBH), commercial (hc) and total height (h) were measured in a randomized block experiment in with five treatments using clonal and seminal teak material. Ten trees from each treatment were cubed and the mean volumes were compared models (DBH, h and volume). Schumacher-Hall model was chosen for clone 68 and the Modified Prodan model for the other treatments. DBH and volume were expressed by the Moissev model and height by the Backman model. DBH and h CAI and MAI are negatively affected by canopy damage and clones had the greatest gains in productivity, especially the clone 61.

ABSTRACT Copaiba trees, of the genus Copaifera (Fabaceae), produce an oleoresin that has pharmacological applications. The yield from the trees is very variable, and factors affecting production are still unknown. We evaluated the yield of oleoresin from Copaifera spp. in the Cerrado- Amazonia ecotone, as well as its relationship with the growth and age of trees. We sampled 30 Copaifera trees by extracting oleoresin for 24 h with a metal borer. Increment cores were collected from 15 trees to determine their age by counting growth rings and to calculate the mean annual increment of the diameter at breast height. The cylinders were sanded and the number of growth rings was counting with a magnifying glass (10x). The ages of trees from which increment cores were not collected were estimated by simple regression analysis. The proportions of productive and non-productive trees were recorded. The best adjusted model for age estimation showed R²adjust. = 0.616 and Syx% = 4.42. The average productivity of oleoresin was 0.124 L per day, and 30% of the trees were productive. The proportion of productive trees increased with increasing diameter at breast height and age, but after a point, increasing diameter was associated with reduced productivity. The mean annual increment had an inverse relationship with diameter for the productivity of oleoresin. The results suggest that other factors could be triggering and controling the oleoresin production and not only the age.