The phosphorus-rich signature of fire in the soil-plant system: a global meta-analysis.
Ecol Lett
; 21(3): 335-344, 2018 03.
Article
em En
| MEDLINE
| ID: mdl-29314550
ABSTRACT
The biogeochemical and stoichiometric signature of vegetation fire may influence post-fire ecosystem characteristics and the evolution of plant 'fire traits'. Phosphorus (P), a potentially limiting nutrient in many fire-prone environments, might be particularly important in this context; however, the effects of fire on P cycling often vary widely. We conducted a global-scale meta-analysis using data from 174 soil studies and 39 litter studies, and found that fire led to significantly higher concentrations of soil mineral P as well as significantly lower soil and litter carbonP and nitrogenP ratios. These results demonstrate that fire has a P-rich signature in the soil-plant system that varies with vegetation type. Further, they suggest that burning can ease P limitation and decouple the biogeochemical cycling of P, carbon and nitrogen. These effects resemble a transient reversion to an earlier stage of ecosystem development, and likely underpin at least some of fire's impacts on ecosystems and organisms.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fósforo
/
Plantas
/
Solo
/
Incêndios
Tipo de estudo:
Systematic_reviews
Idioma:
En
Revista:
Ecol Lett
Ano de publicação:
2018
Tipo de documento:
Article