15 - Introduction Firefighting is a high priority for...

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1 Introduction • Firefighting is a high priority for forest managers – Many communities are fire-adapted – Accumulation of woody debris Introduction, con’t. • USFS says 40% of all federal forests are at risk of severe fires – Wildfires burned 3.8 million ha in 2007 (=37% of Indiana) • Firefighting cost $1.8 billion • How to undo years of fuel build-up? Definitions • Ground fires – relatively cool, burn ground layer & litter. • Crown fires – relatively hot, can kill mature trees. • Prescribed burns – fires set by managers to ____________________ _____________________________ . Role of fire • Fire is a very important ecological process in many ecosystems • Fire converts nutrients that are locked up in plants into a form (ash) that can be added to the soil, making these nutrients available to other plants – _________________ (in the short term) – __________________ , decreasing fertility Role of fire, con’t. • Fire opens up low productivity areas
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15 - Introduction Firefighting is a high priority for...

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