Published on July 17th, 2008 | by Jennifer Lance
Wildfire Ecology Part 1: Almost 4 Weeks Later, 489 California Wildfires Still Burning
On June 20, 2008, an unusual, early summer lightning storm sparked over 1400 fires in California. According to state wildfire maps, currently 489 fires are burning. The reduction in the number of fires is not because they have been put out, but because these blazes have merged. For example, the Hell’s Half Complex, which threatens my home and has prompted the sheriff to issue a mandatory evacuation, originated as 17 fires that have now grown together into one fire over 10,000 acres with 35% containment. 11 California counties have received disaster declaration from President Bush, who will be touring Northern California today.
These fires started naturally and are probably the kind of fires that occurred naturally before massive fire suppression efforts began in the west a hundred years ago. After a nice Memorial day soaking, the foliage here was pretty green when the lightning struck. These fires have been smoldering and cleaning up the forest, except where they are threatening homes. Klamath-Siskiyou Wild explains it best:
Fire has been an integral component to the function of biodiversity for millennia. Fires burn in a diversity of patterns and intensities, and are influenced by numerous factors such as fuels, temperature, terrain and moisture. Many of these fires are close to communities and firefighters are doing their best to protect lives and property. Once the smoke has cleared, we may find that many of these fires in back country forests were ecologically beneficial as fire clears out understory vegetation, burns a natural mosaic pattern and leaves behind a healthier forest.
Four weeks later, things are changing with hot, drier air expected in the region; these fires won’t be out until rain comes in October. Slow burning, healthy fires are turning into uncontrollable nightmares. Decades of old-growth logging and a 100 years of fire suppression have created highly flammable forests that are not natural at all.
Authentic fuel reduction prevents hot, mega fires. This does not equate to logging; however, it means that small fuels are reduced, especially near communities. Ecologically destructive logging projects are often disguised as fuels reduction, but they leave the forest more prone to high intensity fires. What needs to happen to deal with the increase in western wildfires, as predicted by climate change reports, as well as the lack of resources currently available to fight these fires, is small diameter tree removal and brush reduction in our forests. Reducing ladder fuels is crucial to preserving our forests during naturally occurring fire events. Older trees are more resilient to fire if over-crowded forests are cared for with sound fuel reduction projects.
Future posts in this series will be written on firefighting techniques and salvage logging versus natural regeneration after a burn.
Image: Richard Klein