Data/hora: 22/06/2024 03:33:46

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