Floristic and phytosociological analysis in annual production units under Forest concession areas in the Amazon Forest
Abstract
The objective of this study was to analyze the forest composition and phytosociological structure of two Annual Production Units (UPAs) under forest concession in the Amazon. Data from 100% forest inventories of the UPAs located in the State Forest of Paru, Par´ a, Brazil, were used. The analyses included: representativeness of the effective harvesting area (AEE) in relation to the gross UPA area; Jaccard similarity index; horizontal structure, filtering the 10 species with the highest Importance Value Index (IVI); volume of commercial species common to both UPAs; and stem quality. AEE of UPA 3 was 92.25% (3,449.26 ha), and 84.10% (2,192.77 ha) in UPA 4; there was 64% floristic similarity between the two UPAs; among the 10 species with the highest IVI were Handroanthus serratifolius and Manilkara huberi, both highly relevant commercially; the species with the greatest volume in UPA 3 was Handroanthus impetiginosus, and in UPA 4 it was Bagassa guianensis; and commercial species with stem quality suitable for full or partial log utilization were found in greater abundance. It was concluded that the UPAs shows high floristic similarity (64%) and that there are species with potential for both timber and non-timber products not yet being exploited.
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Araújo, A. W. D. C.; Oliveira, K. V.; Oliveira, X. M. D.; Mayrinck, R. C.; Protásio, T. D. P.; Kohler, S. V.; Goulart, S. L. (2026). Floristic and phytosociological analysis in annual production units under Forest concession areas in the Amazon Forest. TreeDimensional Journal, 16(e024275), 1-12. https://doi.org/10.55746/treed.2026.03.275.
@article{arajo2026,
title={Floristic and phytosociological analysis in annual production units under Forest concession areas in the Amazon Forest},
author={Araújo, Aléxia Wávena De Castro and Oliveira, Kattarine Vasconcelos and Oliveira, Ximena Mendes de and Mayrinck, Rafaella Carvalho and Protásio, Thiago de Paula and Kohler, Sintia Valério and Goulart, Selma Lopes},
journal={TreeDimensional Journal},
year={2026},
volume={16},
number={e024275},
pages={1-12},
doi={10.55746/treed.2026.03.275}
}TY - JOUR AU - Araújo, Aléxia Wávena De Castro AU - Oliveira, Kattarine Vasconcelos AU - Oliveira, Ximena Mendes de AU - Mayrinck, Rafaella Carvalho AU - Protásio, Thiago de Paula AU - Kohler, Sintia Valério AU - Goulart, Selma Lopes TI - Floristic and phytosociological analysis in annual production units under Forest concession areas in the Amazon Forest JO - TreeDimensional Journal PY - 2026 VL - 16 IS - e024275 SP - 1 EP - 12 DO - 10.55746/treed.2026.03.275 AB - The objective of this study was to analyze the forest composition and phytosociological structure of two Annual Production Units (UPAs) under forest concession in the Amazon. Data from 100% forest inventories of the UPAs located in the State Forest of Paru, Par´ a, Brazil, were used. The analyses included: representativeness of the effective harvesting area (AEE) in relation to the gross UPA area; Jaccard similarity index; horizontal structure, filtering the 10 species with the highest Importance Value Index (IVI); volume of commercial species common to both UPAs; and stem quality. AEE of UPA 3 was 92.25% (3,449.26 ha), and 84.10% (2,192.77 ha) in UPA 4; there was 64% floristic similarity between the two UPAs; among the 10 species with the highest IVI were Handroanthus serratifolius and Manilkara huberi, both highly relevant commercially; the species with the greatest volume in UPA 3 was Handroanthus impetiginosus, and in UPA 4 it was Bagassa guianensis; and commercial species with stem quality suitable for full or partial log utilization were found in greater abundance. It was concluded that the UPAs shows high floristic similarity (64%) and that there are species with potential for both timber and non-timber products not yet being exploited. KW - Sustainable Forest Management KW - Forest Inventory KW - Tropical Rainforest KW - Amazon Rainforest ER -
Araújo, A. W. D. C.; Oliveira, K. V.; Oliveira, X. M. D.; Mayrinck, R. C.; Protásio, T. D. P.; Kohler, S. V.; Goulart, S. L. (2026). Floristic and phytosociological analysis in annual production units under Forest concession areas in the Amazon Forest. TreeDimensional Journal, 16(e024275), 1-12. https://doi.org/10.55746/treed.2026.03.275. Import via Mendeley Web Importer using DOI 10.55746/treed.2026.03.275
Add to Zotero using DOI 10.55746/treed.2026.03.275 Araújo, A. W. D. C.; Oliveira, K. V.; Oliveira, X. M. D.; Mayrinck, R. C.; Protásio, T. D. P.; Kohler, S. V.; Goulart, S. L. (2026). Floristic and phytosociological analysis in annual production units under Forest concession areas in the Amazon Forest. TreeDimensional Journal, 16(e024275), 1-12. https://doi.org/10.55746/treed.2026.03.275.
Araújo, A. W. D. C.; Oliveira, K. V.; Oliveira, X. M. D.; Mayrinck, R. C.; Protásio, T. D. P.; Kohler, S. V.; Goulart, S. L. (2026). Floristic and phytosociological analysis in annual production units under Forest concession areas in the Amazon Forest. TreeDimensional Journal, 16(e024275), 1-12. https://doi.org/10.55746/treed.2026.03.275.