Browsing by Author "Stolarski, Oiliam Carlos"
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- Initial growth performance of valuable timber species in southern Brazil: Araucaria Angustifolia, Balfourodendron Riedelianum, and Parapiptadenia rígidaPublication . Topanotti, Larissa Regina; Gerber, Dionatan; Stolarski, Oiliam Carlos; Trentin, Bruna Elisa; Pertille, Carla Talita; Schorr, Luís Paulo Baldissera; Gorenstein, Maurício Romero; Nicoletti, Marcos Felipe; Bechara, Fernando CampanhãThe initial growth of three Brazilian native timber species in the city of Dois Vizinhos-PR, Brazil, was described - Araucaria angustifolia, Balfourodendron riedelianum, and Parapiptadenia rigida, using four non-linear mathematical models (Gompertz, Logistic, Logistic 4P, and Chapman-Richards). In the fi rst 4 years after planting, information about collar diameter (mm), total height (m), crown height (m), and crown diameter (m) was obtained twice a year for 12 individuals per species. Crown area (m²) and crown volume (m³) were estimated. The growth in these four variables (collar diameter, total height, crown area, and crown volume) was projected using the models, and their fi tting was assessed based on the values of the Akaike Information Criterion, the Bayesian Information Criterion, the standard error of estimate, and the coeffi cient of determination. The models generated excellent statistics for all parameters in all variables, with better statistics for collar diameter (coeffi cient of determination higher than 0.65 and standard error lower than 30%) and total height (coeffi cients of determination higher than 0.72 and standard error lower than 37%). Considering the three species, Parapiptadenia rigida
- Performance of Guazuma ulmifolia Lam. in subtropical forest restorationPublication . Gerber, Dionatan; Topanotti, Larissa Regina; Gorenstein, Maurício Romero; Vieira, Frederico Márcio Corrêa; Stolarski, Oiliam Carlos; Nicoletti, Marcos Felipe; Bechara, Fernando CampanhãWe evaluated the initial development of Guazuma ulmifolia Lam. in a reforestation experiment in the southwestern region of Parana State, Southern Brazil. In a 70 native tree species plantation (3x2 m spacing) data were collected biannually, up to 48 months, from 72 individuals of Guazuma ulmifolia. The species performance was evaluated regarding its survival (96%), root collar diameter (6.79 cm), total height (12.84 m), crown projection area (14.36 m2) and crown volume (49.86 m3). The species growth at the age of 48 months, associated to its high survival and sprouting rates, tells of excellent behavior in the region, and it could be highly recommended as a shading species for fast canopy fulfillment in forest restoration projects, especially in regions with frost occurrence.