Data/hora: 15/06/2024 07:46:16

Biblioteca(s): | Embrapa Amazônia Oriental.
Data corrente: | 19/05/2020
Data da última atualização: | 19/05/2020
Autoria: | LOPES-COSTA, N.-S.; DA-SILVA-JARDIM, F.-C.; MACEDO-GOMES, J.; SILVA-DIONISIO, L.-F.; SCHWARTZ, G.
Afiliação: | Nisângela-Severino Lopes-Costa, UETO; Fernando-Cristovam da-Silva-Jardim, UFRA; Jaqueline Macedo-Gomes, UETO; Luiz-Fernandes Silva-Dionisio, UEPA; GUSTAVO SCHWARTZ, CPATU.
Título: | Responses in growth and dynamics of the shade-tolerant species Theobroma subincanumto logging gaps in the Eastern Amazon.
Ano de publicação: | 2020
Fonte/Imprenta: | Forest Systems, v. 29, n. 1, e003, 2020.
Idioma: | Inglês
Conteúdo: | Aim of study: To assess responses of the shade-tolerant species Theobroma subincanum in relation to canopy gaps created by reduced impact logging (RIL). Materials and methods: A managed forest in themunicipality ofMoju, Pará state,Brazil, harvested in 1997 through RIL was monitored during 12 years (1998-2010). Nine logging gaps were selected and classified in small, medium, and large. Four 10 m x 50 m strips starting from the gap?s border towards the forest and following the directions of cardinal points were installed. Each strip was divided in five 10 m x 10 m plots. Density, diameter distribution (DBH &#8805; 5 cm with intervals = 5 cm), and diameter growth were measured. Main results: No significant changes in seedling density of T. subincanum were found, and its diameter distribution followed the reverse ?J? shape during all monitoring time. T. subincanum presented diameter growth of 0.15 cm year-1 with highest Periodic Annual Increment in diameter up to three years, and stabilization in nine years after RIL. The species responded to a growth gradient inversely proportional to the gap?s border distance (p = 0.001) but not to gap size and plots direction in cardinal points around the gap. Research highlights: Shade-tolerant species such as T. subincanum have sensible and positive growth responses to disturbances caused by RIL even when seedlings received low amounts of indirect sunlight. These positive responses should be considered in the management of production forests.
Palavras-Chave: | Gestão florestal; Manejo florestal; Registro de impacto reduzido.
Thesagro: | Árvore; Crescimento.
Categoria do assunto: | K Ciência Florestal e Produtos de Origem Vegetal
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/213076/1/15832-63222-1-PB.pdf
Registro original: | Embrapa Amazônia Oriental (CPATU)
Exemplares: | CPATU - (56365-1) - UPC - AP - DD -  -  -  - DIS