[From lead-in] Although there are many other fire behavior knowledge gaps and research needs that I could list here (e.g., development of models or guidelines for predicting fire vortex generation, plume-dominated or convectively dominated fires and safety zone size/characteristics), here's my "Top 20" list of items pertaining to ecosystem management in no particular order ... The items are largely a reflection of my own opinions and are not based on any survey of fire researchers and fire managers; I am however indebted to comments made by Judi Beck (B.C. Forest Service), mark Heathcott (Parks Canada) and Rick Lanoville (GNWT Forest Management Division). Bear in mind that my perspective is largely that of someone who has been engaged in outdoor experimental fire behavior research, wildfire case study investigation, and wildfire monitoring/operations as a professional for nearly 25 years, principally in the boreal forest region of Canada but with some experience in Australia, New Zealand and the U.S.