Savanna vegetation-fire-climate relationships differ among continents.
Science
; 343(6170): 548-52, 2014 Jan 31.
Article
em En
| MEDLINE
| ID: mdl-24482480
ABSTRACT
Ecologists have long sought to understand the factors controlling the structure of savanna vegetation. Using data from 2154 sites in savannas across Africa, Australia, and South America, we found that increasing moisture availability drives increases in fire and tree basal area, whereas fire reduces tree basal area. However, among continents, the magnitude of these effects varied substantially, so that a single model cannot adequately represent savanna woody biomass across these regions. Historical and environmental differences drive the regional variation in the functional relationships between woody vegetation, fire, and climate. These same differences will determine the regional responses of vegetation to future climates, with implications for global carbon stocks.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Árvores
/
Clima
/
Ecossistema
/
Incêndios
Tipo de estudo:
Prognostic_studies
País/Região como assunto:
Africa
/
America do sul
/
Oceania
Idioma:
En
Revista:
Science
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
Austrália