03340nab a2200241 i 4500003000900000005001700009008004100026040001800067072000800085100003600093100004000129100003300169100004200202100002900244245008400273500006900357520236400426650002102790650001102811650001302822773018202835856008103017BR-BrBNA20260410101920.0260410b2019    bl.qr|pooa||| 00| 0 eng |  aBR-BrBNAbeng  aK10  aLustosa Junior, Ilvan Medeiros   aCastro, Renato Vinícius Oliveira   aGaspar, Ricardo de Oliveira   aAraújo, Juliana Baldan Costa Neves   aAquino, Fabiana de Gois   aCompetition Indexes to Evaluate Tree Growth in a Semi-Deciduous Seasonal Forest  aPublicação on-line, 24 ref.; 7 tables; 2 illus; Summary (En)  a

ABSTRACT

Most of the studies that analyze the behavior of tree competition approach even-aged plantations.
Therefore, it is possible to notice a lack of this kind of information regarding natural forests with
high biodiversity. The objective of this study was to evaluate the competition in a fragment of
Semi-Deciduous Seasonal Forest, according to the ecologic group, light depending and 
nondepending groups for all species sampled in the fragment. The Distance Independent Competition
Index and Semi-Distance Independent Competition Index were applied in this study. The basal
area in larger trees index, without the radius of influence, was the most efficient to analyze how
the competition affects the growth of the specimens in the studied fragment. It was stated that
evaluating the competition per ecologic group is more efficient. The results confirm that the
forest competition cannot be determined by considering only a fixed radius of influence that
embraces the neighbors and the subject tree.

Keywords: Atlantic Forest, ecologic groups, radius competition, forest management.


Índices de Competição na Avaliação do Crescimento Arbóreo em Floresta Estacional Semidecidual

RESUMO

A maioria dos estudos que analisa o comportamento da competição arbórea é voltada para plantios
homogêneos e equiâneos. Nota-se, portanto, uma carência de informações deste tipo em florestas
naturais de elevada biodiversidade. Objetivou-se com este trabalho avaliar a competição em um
fragmento de Floresta Estacional Semidecidual, por grupo ecológico, grupos demandantes e não
demandantes de luz para todas as espécies amostradas no fragmento. Foram empregados índices
de competição independentes da distância e semidependentes da distância. O índice BAL (basal
area in larger trees), sem raio de influência, obteve o melhor desempenho para analisar como a
competição afeta o crescimento dos indivíduos no fragmento estudado. Concluiu-se que avaliar
a competição por grupo ecológico é mais eficaz, e os resultados confirmam que a competição
florestal não pode ser determinada apenas pela aplicação de um raio fixo de influência dos
vizinhos em relação à árvore-objeto.

Palavras-chave: Mata Atlântica, grupos ecológicos, raios de concorrência, manejo florestal.  aMATA ATLÂNTICA  aMANEJO  aFLORESTA0 02929dRio de Janeiro-RJ Instituto de Florestas - UFRRJ 1994o2025-0452tFloresta e Ambiente (Brazil)x1415-0980  /  ISSN 2179-8087 0nlinegv. 26(4) p. 1-12; (2019)wBR2026000333  uhttps://www.scielo.br/j/floram/a/sgdQbp6mNzksWwFRghgB6Ws/?format=pdf&lang=en