Data/hora: 20/06/2024 15:11:26

Biblioteca(s): | Embrapa Amazônia Oriental.
Data corrente: | 03/02/2014
Data da última atualização: | 19/10/2022
Autoria: | AGUIAR JUNIOR, A.; BARBOSA, R. I.; BARBOSA, J. B. F.; MOURÃO JUNIOR, M.
Afiliação: | Agnaldo Aguiar Junior, Roraima State Foundation for Environment and Water Resources; Reinaldo I. Barbosa, National Institute for Research in Amazonia (INPA), Department of Environmental Dynamics (CDAM); José B. F. Barbosa, UFRR; MOISES CORDEIRO MOURAO DE O JUNIOR, CPATU.
Título: | Invasion of Acacia mangium in Amazonian savannas following planting for forestry.
Ano de publicação: | 2014
Fonte/Imprenta: | Plant Ecology & Diversity, v. 7, n. 1/2, p. 359-369, 2014.
DOI: | 10.1080/17550874.2013.771714
Idioma: | Inglês
Notas: | Published online: 04 Mar 2013.
Conteúdo: | No studies have examined the invasion of exotic species used for forestry purposes in the savannas of the Brazilian Amazonia.; Aims : We investigated the invasion process of Acacia mangium in savanna areas adjacent to large-scale forestry plantations in north-eastern Roraima State, Brazilian Amazonia.; Methods : A tree inventory to record the presence of all A. mangium and native tree individuals was carried out in of 14 plots (each 50 m in width and 1500 m in length) established at five plantation sites. Biometric measurements were taken for all individuals to identify their structure and maturity. Distance categories were created for determining frequency of occurrence in 100 m sections along the plots for all individuals. Correlations and goodness-of-fit tests for discrete data ordered in categories were applied to verify the occurrence of A. mangium plants in relation to distance from the plantation.; Results : Individuals of A. mangium were dispersed up to 900 m from the plantation edge 8?9 years after the plantation was established. Although most recorded individuals were in the juvenile stage, reproductive adults were found in two establishment patterns: non-nucleated and nucleated under native tree species. Crown cover of the savanna's most abundant native tree species facilitated the regeneration of A. mangium.; Conclusions : Planting of A. mangium in Amazonian savannas provides a source of continuous dispersal, and invasion by the species is facilitated by environmental conditions.
Palavras-Chave: | Espécies invasoras; Invasão biológica.
Thesagro: | Acácia.
Thesaurus Nal: | Amazonia.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Amazônia Oriental (CPATU)
Exemplares: | CPATU - (49113-1) - UPC - AP - DD -  -  -  - DIS