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Re: Burn Study - reply

In a message dated 98-03-20 19:57:27 EST, you write:
<< Subj:	 Burn Study
 Date:	98-03-20 19:57:27 EST
 From:	caron@pcisys.net (Caron Ann Rifici)
(edited down)
 
 Hello-
 We will be initiating a burn study of some of the short grass
 prairie here on the base.  

 Thanks for any input you can give.    Caron
  >>


>> Reply

After reading the original posting and replies I noticed again that a study is
being started where burning is a variable to be studied yet no discussion
about the nature of the fire to be applied is or has been discussed. A major
problem that fire managers lament is the lack of quantified descriptions of
the type and nature of the fire applied in the study. The type of fire effect
resulting from a single fire will vary greatly with the intensity ( flame
lengths ), rate of spread, ignition in relation to the direction of maximum
spread ( backing versus heading), depth of the flaming front, fuel moisture,
ambient air temp., RH, flame length wind speed, and a host of other variables.

It appears your study  is not intended to study the nature of fire physics.
Yet, please consider adding some detailed measurements of the fire conditions
and correlate these to the effects shown. Two fires will result in greatly
differing vegetative results depending on the intensity, severity ( amount of
above ground biomass consumed or % mineral soil exposed), and seasonality (
active growing, after bud crack, after green up versus dormant season). 

To help make your study more useful to either replicate or avoid the
vegetative chnages encountered it will be necessary to compile some of this
informaiton.

E. A. Johnson and K. Miyanishi published a neat little paper on the topic "The
Need for Consideration of fire Behavior and Effects in Prescribed Burning" and
don't you know the reprint I was able to find in my file had the date and
journal issue missing. I think it was in Ecology. Maybe someone else on the
list has the full cite. If you send me a snail mail address I'll drop a copy
of this one in the mail.

Good Luck and don't let the live fire stuff go BOOM!!

Bob Stanton
Prescribed Fire Consulting
219 Republic Rd.
Batavia, IL 60510
630.761.0700
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