Mortality and recruitment of trees in a secondary montane rain forest in Southeastern Brazil
Braz. j. biol
; Braz. j. biol;63(1): 47-60, Feb. 2003. ilus, mapas, tab, graf
Article
em En
| LILACS
| ID: lil-343394
Biblioteca responsável:
BR1.1
ABSTRACT
Mortality and recruitment rates were obtained for tree species over a 5.6 year period in a 1-ha fragment of secondary montane rain forest in Southeastern Brazil. All plants with a diameter at breast height (dbh) > 8 cm were sampled in 1989-1990 and 1995. There was an increase from 90 to 96 species, and 669 ind./ha to 749 ind./ha over the period. The mortality rate of 1.67 percent/yr was similar to findings for other forests, while recruitment of 3.46 percent/yr was the highest rate reported. Both mortality and recruitment were significantly higher in the smaller dbh classes. Recruitment was higher among rare species, and the relatively slow-growing species had significantly higher mortality rates. Differences between species dynamics were marked. Species with high values of l were mainly early successional and understorey trees but some understorey species also suffered a marked population decline. The classification system of species in response to light which divides understorey species into "partial shade-bearers" and "shade-bearers" groups showed to be the most suitable to the obtained results. The results suggest that this forest is undergoing a process of recovery from past disturbance
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Árvores
/
Clima Tropical
/
Ecologia
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Revista:
Braz. j. biol
Assunto da revista:
BIOLOGIA
Ano de publicação:
2003
Tipo de documento:
Article
/
Project document
País de afiliação:
Brasil
País de publicação:
Brasil