%0 Journal Article
%T Impact of a high severity wildfire and two post-fire stabilisation treatments on the structure of the microbial community in a soil located in Laza (Ourense, NW Spain)
%A A. Lombao
%A A. Barreiro
%A A. Mart¨ªn
%A T. Carballas
%J Flamma
%D 2013
%I FuegoRed
%X Studies concerning the microbial communities in burnt soils have been focused on biochemical properties and, despite its interest, information about the microbial community structure is scarce. The aim of this study was to evaluate the short- and medium- term effects produced by a high severity fire and the application of post-fire stabilization methods (mulching and seeding) in the structure of soil microbial population, determined by means of the analysis of phospholipid fatty acids (PLFA). The study was performed in a forest ecosystem affected by a high severity wildfire and highly susceptible to post-fire soil erosion (Laza, NW Spain). Samples were collected from the A horizon (0-2 cm) immediately and 4, 8 and 12 months after the wildfire. The results of principal component analysis carried out with PLFA data make possible to differentiate between burnt and unburnt samples, indicating a clear effect of the wildfire on composition of microbial communities. Unburnt samples were characterized by the presence of fungal fatty acid as 18:2¦Ø6, 18:1¦Ø9 o 16:¦Ø5, whereas fatty acid characteristics of actinomycetes tended to be higher in burnt samples than in the corresponding unburnt samples. The structure of microbial communities also varied with sampling time, confirming seasonal fluctuations of soil microbial parameters.
%K High severity fire
%K Burnt soil
%K Soil stabilisation treatments
%K PLFA pattern
%K Microbial community structure
%U https://sites.google.com/site/flammafgr/texto/volumen-4-2013/4-1-2013/4_1_6/4_1_6.pdf?attredirects=0