Diameter Growth in Mixed-Age Plantation of Araucaria angustifolia
Abstract
This study aims to evaluate the diameter growth of a mixed-aged plantation of Araucaria angustifolia (Bertol.) Kuntze (Brazilian pine), located in the municipality of Ivaí, Paraná, through partial stem analysis using increment cores. The study stand covers approximately 41.5 hectares and is managed under a multi-strata system, where the canopy is composed of Araucaria angustifolia intercropped with a commercial plantation of Ilex paraguariensis St. Hil. (yerba mate). For the analyses, 30 trees were selected, from which two increment cores were collected using a Pressler borer. These cores were later processed and digitized to allow for measurement of the growth rings. Based on the compiled data, growth and yield functions by Chapman-Richards (C-R) and Schumacher (SCH) were fitted to assess growth trends over time, using the Current Annual Increment (CAI) as a reference. The average CAI was then correlated with meteorological variables, including temperature, precipitation, and hours of sunlight. The Araucaria angustifolia stand showed ages ranging from 25 to 50 years, with an average diameter of 38.5 cm. The Chapman-Richards model provided the best fit to the dataset, allowing for the technical cutting age to be estimated at 14 years, when average diameters of 24.4 cm could be obtained. It was found that diameter growth over time was not correlated with local climate data.
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Silva, M. L. D.; Stepka, T. F.; Wolff, L. D. O.; Ceola, M. S.; Pesck, V. A.; Miranda, D. L. C. D.; Lisboa, G. D. S. (2025). Diameter Growth in Mixed-Age Plantation of Araucaria angustifolia. TreeDimensional Journal, 15(e0250047), 1-7. https://doi.org/10.55746/treed.2025.04.0047.
@article{silva2025,
title={Diameter Growth in Mixed-Age Plantation of Araucaria angustifolia},
author={Silva, Marconi Linder da and Stepka, Thiago Floriani and Wolff, Leandro de Oliveira and Ceola, Matheus Schutz and Pesck, Vagner Alex and Miranda, Dirceu Lúcio Carneiro de and Lisboa, Gerson dos Santos},
journal={TreeDimensional Journal},
year={2025},
volume={15},
number={e0250047},
pages={1-7},
doi={10.55746/treed.2025.04.0047}
}TY - JOUR AU - Silva, Marconi Linder da AU - Stepka, Thiago Floriani AU - Wolff, Leandro de Oliveira AU - Ceola, Matheus Schutz AU - Pesck, Vagner Alex AU - Miranda, Dirceu Lúcio Carneiro de AU - Lisboa, Gerson dos Santos TI - Diameter Growth in Mixed-Age Plantation of Araucaria angustifolia JO - TreeDimensional Journal PY - 2025 VL - 15 IS - e0250047 SP - 1 EP - 7 DO - 10.55746/treed.2025.04.0047 AB - This study aims to evaluate the diameter growth of a mixed-aged plantation of Araucaria angustifolia (Bertol.) Kuntze (Brazilian pine), located in the municipality of Ivaí, Paraná, through partial stem analysis using increment cores. The study stand covers approximately 41.5 hectares and is managed under a multi-strata system, where the canopy is composed of Araucaria angustifolia intercropped with a commercial plantation of Ilex paraguariensis St. Hil. (yerba mate). For the analyses, 30 trees were selected, from which two increment cores were collected using a Pressler borer. These cores were later processed and digitized to allow for measurement of the growth rings. Based on the compiled data, growth and yield functions by Chapman-Richards (C-R) and Schumacher (SCH) were fitted to assess growth trends over time, using the Current Annual Increment (CAI) as a reference. The average CAI was then correlated with meteorological variables, including temperature, precipitation, and hours of sunlight. The Araucaria angustifolia stand showed ages ranging from 25 to 50 years, with an average diameter of 38.5 cm. The Chapman-Richards model provided the best fit to the dataset, allowing for the technical cutting age to be estimated at 14 years, when average diameters of 24.4 cm could be obtained. It was found that diameter growth over time was not correlated with local climate data. KW - Diameter Growth KW - Brazilian Pine KW - Forest Management KW - Southern Brazil. ER -
Silva, M. L. D.; Stepka, T. F.; Wolff, L. D. O.; Ceola, M. S.; Pesck, V. A.; Miranda, D. L. C. D.; Lisboa, G. D. S. (2025). Diameter Growth in Mixed-Age Plantation of Araucaria angustifolia. TreeDimensional Journal, 15(e0250047), 1-7. https://doi.org/10.55746/treed.2025.04.0047. Import via Mendeley Web Importer using DOI 10.55746/treed.2025.04.0047
Add to Zotero using DOI 10.55746/treed.2025.04.0047 Silva, M. L. D.; Stepka, T. F.; Wolff, L. D. O.; Ceola, M. S.; Pesck, V. A.; Miranda, D. L. C. D.; Lisboa, G. D. S. (2025). Diameter Growth in Mixed-Age Plantation of Araucaria angustifolia. TreeDimensional Journal, 15(e0250047), 1-7. https://doi.org/10.55746/treed.2025.04.0047.
Silva, M. L. D.; Stepka, T. F.; Wolff, L. D. O.; Ceola, M. S.; Pesck, V. A.; Miranda, D. L. C. D.; Lisboa, G. D. S. (2025). Diameter Growth in Mixed-Age Plantation of Araucaria angustifolia. TreeDimensional Journal, 15(e0250047), 1-7. https://doi.org/10.55746/treed.2025.04.0047.