Response of soil microbial communities to fire and fire-fighting chemicals

摘要: Worldwide, fire-fighting chemicals are rapidly gaining acceptance as an effective and efficient tool in wildfires control prescribed burns for habitat management. However, despite its widespread use water additives to and/or slow the spread of fire, information concerning impact these compounds on soil ecosystems is scarce. In present work we examine, under field conditions, response microbial communities three different fire-chemicals at normal doses application. The study was performed with a Humic Cambisol over granite heath, located temperate humid zone (Galicia, NW Spain) following treatments: unburned (US) burned added alone (BS) or mixed foaming agent Auxquimica RFC-88 1% (BS+Fo), Firesorb 1.5% (BS+Fi) FR Cross ammonium polyphosphate 20% (BS+Ap). mass (microbial C), activity (β-glucosidase, urease) community structure [phospholipids fatty acids (PLFA) pattern] were measured samples collected sampling times during 5year period after fire. results showed negative short-term effect fire properties. biomass levels tended recover time; however, changes (PLFA pattern) still detected 5years Compared water, treatments that higher influence whole period. Our data indicated usefulness PLFAs analysis detect long-term both hence quality forest ecosystems.