Data/hora: 05/06/2024 04:45:11

Biblioteca(s): 	Embrapa Florestas.	
Data corrente: 	08/04/2016	
Data da última atualização: 	11/04/2016	
Autoria: 	SHIMAMOTO, C. Y.; BOTOSSO, P. C.; AMANO, E.; MARQUES, M. C. M.	
Afiliação: 	Carolina Y. Shimamoto, UFPR; PAULO CESAR BOTOSSO, CNPF; Erika Amano, UFPR; Márcia C. M. Marques, UFPR.	
Título: 	Stem growth rhythms in trees of a tropical rainforest in Southern Brazil.	
Ano de publicação: 	2016	
Fonte/Imprenta: 	Trees, v. 30, n. 1, p. 99-111, Feb. 2016.	
DOI: 	10.1007/s00468-015-1279-z	
Idioma: 	Inglês	
Conteúdo: 	Monitoring the rhythm of tree growth associated with the growth rings can contribute substantially to understanding forest dynamics and the management of tropical forests. In this study, we monitored the girth increment rhythm and described the wood characteristics (anatomy of growth rings, wood specific gravity) in 10 tropical tree species (103 individuals) naturally occurring in a wet and weakly seasonal region of Atlantic Forest in southern Brazil. We aimed to verify whether tree growth dynamics are associated with climate and woody anatomy in tropical trees with contrasting ecological characteristics. We installed permanent dendrometer bands and monthly assessed the girth increment for 22 months. We collected wood samples (non-destructive method), measured wood specific gravity and prepared permanent slides to characterize the growth ring markers. We found growth rings in all species (distinct in six species); deciduous species produced more distinguishable tree rings compared with semi-deciduous and evergreen tree species. Species varied in their accumulated girth growth (in average, from 1.83 to 62.64 mm), growth rates (1?15 %), and annual radial increment (0.16?5.44 mm). Girth increment was positively related to temperature and day length in five out of ten tree species, indicating the possible effects of these climatic variables in triggering cambial activity in these species. The growth pattern varied among species and was marginally associated to the tree deciduousness. We concluded that even in wet and less seasonal climates, there can be an association in the cambium activity and stem growth with the hotter and longer days of summer months.	
Palavras-Chave: 	Anel de crescimento; Girth increment; Growth ring; Incremento da circunferência; Sazonalidade; Seasonality.	
Thesagro: 	Anatomia vegetal; Densidade da madeira; Fenologia; Madeira.	
Thesaurus Nal: 	Phenology; Wood anatomy; Wood density.	
Categoria do assunto: 	K Ciência Florestal e Produtos de Origem Vegetal	
Registro original: 	Embrapa Florestas (CNPF)	
Exemplares: 	CNPF - (54940-1) - UPC - AP - DD -  -  -  - DIS