Data/hora: 02/06/2024 13:05:02

Biblioteca(s): 	Embrapa Agrobiologia.	
Data corrente: 	17/11/2020	
Data da última atualização: 	17/11/2020	
Autoria: 	LUZ, R. L.; LEITE, M. F. A.; ZELARAYÁN, M. C.; BODDEY, R. M.; GEHRING, C.	
Afiliação: 	Ronildson Lima Luz, UEMA; Márcio Fernandes Alves Leite; Marcelo Correa Zezarayan, ONG Educação e Meio Ambiente (EMA), Pirapemas, Maranhão, Brazi; ROBERT MICHAEL BODDEY, CNPAB; Christoph Gehring, UEMA.	
Título: 	Litter decomposition and nutrient release dynamics of leaves and roots of the babassu palm in eastern Amazonia.	
Ano de publicação: 	2020	
Fonte/Imprenta: 	Acta Amazonica, v. 50, p. 213-222, 2020.	
DOI: 	0.1590/1809-4392201903171	
Idioma: 	Inglês	
Notas: 	Título em Português: ; Decomposição de serrapilheira e dinâmica de nutrientes de folhas e raízes da palmeira babaçu na periferia leste da Amazônia	
Conteúdo: 	he ruderal babassu palm (Attalea speciosa) is expanding on large areas of degraded Amazon landscapes. Decomposition of leaves and roots is in the center of plant:soil interactions. We evaluated decomposition and nutrient concentrations of leaves and fine roots of babassu in comparison with two exotic reference species, Acacia mangium (slow degradability) and Leucaena leucocephala (fast degradability), in a 138-day litterbag assay carried out in secondary forest stands of different age and babassu abundance. We chose 4-mm over 2-mm mesh litterbags based on a pilot study. Babassu leaves degraded slower than leaves of A. mangium and L. leucocephala, and also had lower nitrogen, phosphorus and calcium concentrations in all stages of decomposition. By contrast, potassium concentrations in babassu leaves were higher than in both reference species at 0 and 50 days. Roots of all three species decomposed slower than leaves. Compared to the leaves, both biomass loss and nutrient concentrations differed less between babassu and reference-species roots, except for lower nitrogen concentration in babassu roots. Leaf-litter decomposition of all three species was significantly faster in old than in young secondary forest, suggesting an acceleration of decomposition along succession. Babassu leaves decomposed faster in old babassu-dominated than non-dominated secondary forest, pointing to the existence of specialized decomposer communities in babassu-dominated stands.	
Palavras-Chave: 	Nutrient concentrations; Ruderal palm; Soil organic matte.	
Thesaurus Nal: 	Attalea speciosa.	
Categoria do assunto: 	S Ciências Biológicas	
Registro original: 	Embrapa Agrobiologia (CNPAB)	
Exemplares: 	CNPAB - (41506-1) - UPC - AP - DD -  -  -  - DIS