Growth, volume evolution and assortment of a Pinus elliottii Engelm. stand at an advanced age Geórgia Levorse Oliveira, Thiago Floriani Stepka, Marcos Felipe Nicoletti, Matheus Henrique Pinto, Guilherme Galéski, et al. Cerne, 2025 Background: This study aimed to recover the silvicultural history of a 58-year-old Pinus elliottii stand, monitor its growth rate and volume evolution of assortments, especially in the older tree ages. Methods: The study area is located in the Três Barras National Forest, SC, Brazil, and composed of four stands established in 1963, totaling an area of 8.95 ha. The studied stand was subjected to 4 mixed thinnings at 6, 14, 23 and 36 years of age, with the latter in 1999, and since then they have not undergone any further intervention. A census of the stands was conducted in 2013 and 2021; increment cores of 33 trees were collected in the four stands in 2021. A retrospective analysis and estimation of DBHs were performed in the years in which thinning was performed, hypsometric estimates were made, volume and assortment were calculated at the ages of the interventions using equations available in the literature. Results: A reduction in diameter growth and stabilized height growth of trees was observed after 36 years, the date of the last thinning. Even so, it was found that 78% of the volumes at 50 years were of the most valuable assortment and 83% at 58 years. Conclusion: There is a need for an economic, sensitivity and risk assessment to assess and identify the viability of long-term planting, especially the optimal age to balance wood production and proportion from the most valuable assortments in the shortest time.
LICENSING AND ENFORCEMENTIN MUNICIPAL ENVIRONMENTAL DEPARTMENTS IN THE STATE OF RIO GRANDE DO SUL, BRAZIL Gelso Pacheco Neto, Philipe Ricardo Casemiro Soares, Cilmar Antonio Dalmaso, Maria Raquel Kaineski, Jaçanan Eloisa de Freitas Milani, et al. Floresta, 2023 This study evaluated the environmental departments of some municipalities in Rio Grande do Sul, Brazil, regarding their structure and licensing and enforcement processes. Information was collected through online questionnaires sent to municipalities. The questionnaires addressed the staff, the training of the technical staff and the work structure of the environmental departments in the municipalities. Evaluations and classifications were conducted using the classification tree technique based on municipal data on the environmental licenses issued, and additionally the infraction notices issued as response variables. Thus, it was observed that human resources, effective civil servants and the work team composition are the variables that best explain the issuance behavior of the municipal environmental licenses, and in parts the infraction notices. The other variable that most satisfactorily explains the issuance of infraction notices in the municipalities is the use of their own website with environmental software in the environment departments.
Influence of first trimmings in the growth of four Pinus species Marcos Felipe Nicoletti, Luciano Lambert, Philipe Ricardo Casemiro Soares, Girlene da Silva Cruz, Bruno Rafael Silva de Almeida Revista Em Agronegocio E Meio Ambiente, 2022 O objetivo deste estudo foi quantificar e comparar a influência do primeiro desbaste nas variáveis dendrométricas de quatro espécies de Pinus spp. no Estado de Santa Catarina. Os povoamentos monitorados comtemplaram as seguintes espécies: Pinus elliottii Engelm var. elliottii, Pinus greggii Engelm, Pinus taeda L., Pinus patula Schlechtd. & Cham. Os dados foram obtidos por meio de censo florestal e análise de tronco completa por classes diamétricas selecionadas pelo método de Sturges. Foram coletados seis discos por árvore nas alturas absolutas de 0,1 e 1,3 m e, também, nas alturas relativas de 25%, 50%, 75% e 100% da altura comercial e diâmetro igual a 8 cm. Para a distribuição diamétrica foi verificada a normalidade dos dados pelo teste de Shapiro-Wilk. As taxas de crescimento da largura dos anéis dos dois anos que antecedem o desbaste nas alturas de 0,1 m, 1,3 m e 25% reduzem para todas as espécies. Nas alturas de 50% e 75% a taxa de crescimento tende a se estabilizar para o mesmo período, com exceção do Pinus elliottii. Em 100% da altura comercial, Pinus elliottii apresentou crescimento superior ao Pinus taeda, aproximadamente, 50% ao comparar. O efeito do desbaste tardio, entre as árvores, teve influência no crescimento para as diferentes espécies estudadas.
Performance of a whole tree mechanised timber harvesting system when clear-felling a 32-year-old pinus taeda l. Stand Natali De Oliveira Pitz, Jean Alberto Sampietro, Erasmo Luis Tonett, Luis Henrique Ferrari, Philipe Ricardo Casemiro Soares, et al. New Zealand Journal of Forestry Science, 2021 Background: Work studies are fundamental for the development and assessment of timber harvesting systems aimed at rationalising and improving forest management activities. Methods: This study evaluated the operational performance of a mechanised whole-tree harvesting system in 32-year-old Pinus taeda L. stands producing multiple timber products. A time and motion study at the cycle element level was conducted to evaluate the operational performance of each component of the harvesting system. Equations were developed to estimate the productivity of tree extraction activity with a wheeled skidder and log loading with a mechanical loader. Results: Tree felling with an excavator-based harvester had the highest mean productivity (135 m3 per productive machine hour), followed by tree extraction with a wheeled skidder (117 m3 per productive machine hour), while manually processing larger logs with a chainsaw had the lowest productivity (25.7 m3 per productive machine hour). Operator, extraction distance and mean log volume had a significant effect on the performance of different activities and were included in productivity models. Conclusions: Operational performance of equipment was variable and dependent on the effect of the operator, extraction distance and log volume. Thus, the use of models to estimate productivity considering such factors, coupled with reduced delays to increase utilisation of equipment, will contribute to the better management and planning of forest harvesting operations under the evaluated conditions.
Hypsometric and volumetric equations and taper functions for Pinus spp. Marcos Felipe Nicoletti, Luciano Lambert, Philipe Ricardo Caserimo Soares, Girlene da Silva Cruz, Bruno Rafael Silva Almeida, et al. Revista De Ciencias Agroveterinarias, 2020 O emprego de ferramentas como a modelagem florestal torna-se cada vez mais importantes no planejamento florestal pois geram estimativas acuradas da produção dos povoamentos. O objetivo do estudo foi realizar o ajuste de modelos hipsométricos, volumétricos e de afilamento para quatro espécies de Pinus na Região Serrana de Santa Catarina. As espécies utilizadas foram Pinus taeda, Pinus elliottii, Pinus greggii e Pinus patula todas implantadas e conduzidas sobre o mesmo plano de manejo florestal. O povoamento está localizado no município de Correia Pinto, Santa Catarina, com 14 anos de idade. Para as análises foram ajustados modelos matemáticos com base nos dados do censo florestal. Para a escolha do melhor modelo utilizaram-se os critérios estatísticos: o coeficiente de determinação ajustado (R²aj), erro padrão da estimativa (Syx%), análise gráfica dos resíduos. As equações hipsométricas apresentaram R² ajustado relativamente baixos, com valores variando entre 0,14 e 0,35 para as espécies e Syx% variando entre 7,67% a 4,86%. Em relação as equações volumétricas, o R² ajustado ficou acima de 0,91 e o Syx% foi inferior a 10%. No que diz respeito as funções de afilamento o melhor modelo para descrever o perfil do fuste das espécies foi Hradetzky, com R² ajustado acima de 0,96 e Syx% inferior a 10%. Os modelos de Naslund, Spurr I e II e Naslund modificado foram selecionados para estimar a volumetria das espécies e; o modelo de afilamento de Hradetzky, foi superior aos demais, sendo selecionado para descrever o perfil do fuste das espécies na área de estudo.
Quality Function Deployment (Qfd) Applied To The Variables That Influence Quality Costs In Mechanized Forest Harvest Operations Gustavo Silva Oliveira, Philipe Ricardo Casemiro Soares, Jean Alberto Sampietro Floresta, 2020 Globalization and client demands result in the need for investments for the survival of the companies. Forest harvest represents the highest costs and losses of wood production. Quality function deployment (QFD) is recommended to achieve quality by detecting customer needs. Thus, this study aimed to determine the variables that influence quality costs in the mechanized harvest to reach the quality control of forest activity. The research was developed in a company located in the State of Santa Catarina, Brazil. The variables that influence quality costs in four categories (evaluation, prevention, internal and external flaws) were identified. The QFD method was used to translate the needs of internal and external customers (critical success factors) of mechanized harvesting activities into measurable technical characteristics (variables that influence quality costs), determining the weight for each relationship and, consequently, the balance of the categories, besides the correlations of the variables evaluated as strong, medium, weak, and non-existent. Among the 29 variables identified, 18 consisted of evaluation and prevention, representing the relative weights of 37.17% and 26.49%, respectively, and 11 represented internal and external flaws, with values of 26.57% and 9.73%, respectively. The correlation matrix found 334 correlation of the 406 cells: 195 (58%) strong, 86 (26%) medium, and 53 (16%) weak. In conclusion, the company must improve process quality by investing in evaluation and prevention aimed at reducing non-conformities and expansion of revenues.
Predictability in the productive process of thinning and clearcutting mechanized operations in Pinus taeda L. Bruna Martins Garcia, Philipe Ricardo Casemiro Soares, Jean Alberto Sampietro, Caroline Fernandes Floresta, 2020 Some organizations in the Brazilian forestry sector, especially in the activities carried out in forest stands, do not follow the development pace of other industries and the adoption rate of management and quality methodologies and tools. This study aimed to evaluate the predictability of timber harvesting process based on critical points identified in the selective thinning and clear cut operations. Interviews and Pareto chart were used, for the identification and evaluation of the critical points, respectively, and for the evaluation of the process, it was used the Statistical Process Control (SPC) by attributes and variables in the main failures. In the interviews conducted with workers, seven critical points were identified. The evaluation with Pareto chart showed that 80% of the failures identified during harvest are attributed to the damage to the remaining trees, sorting (measures of length and diameter of the product) and stump height. Among the possible causes of the critical points are problems with employees’ training, regular maintenance of machinery and operations planning. In the evaluation with the CEP, the control charts indicated that the sorting and stump height, although within the limits specified by the company, was considered unstable and unpredictable
Competitiveness of wood pulp in the international market Philipe Ricardo Casemiro Soares, Gustavo Silva Oliveira, Julio Peretti da Silva, Luis Henrique Ferrari, Erone dos Santos, et al. Australian Journal of Crop Science, 2018
Study of the seasonal price of Brazilian pulp in the United States market in cyclic periods as support for business strategies Scientia Forestalis Forest Sciences, 2013
Critical points of the production process of solid wood flooring Ciencia Florestal, 2012
Critical points evaluation in the solid wood flooring manufacture Scientia Forestalis Forest Sciences, 2012