GEOG 3110 Lecture Notes - Lecture 22: Pinus Ponderosa, Olympic Peninsula, Fire Regime
17 Feb 2016
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Document Summary
Stand composition not a fixed constant rate climate is constantly shifting, most stands are at non-equilibrium typically see shifts in stand structure. Large number of ecosystems types at non-equilibrium the effects of disturbance are so generally large compared to stand development that they never reach equilibrium. Disturbance is large relative to size of landscape units. Olympic peninsula, fire 1701 burns almost entire coastal zone. Hurricane andrew large amount of forest taken out. Yellowstone 1988 entire park burned down seen as catastrophic but it actually burns every 200-300 years. Landscapes can be prone to large scale disturbances. Non-equilibrium can be due to unique events. Savannah of africa artifact disease called rinderpest brought by europeans from sheep and cattle. When large herbivores are removed, during these decades acasia trees grow up due to lack of herbivory. In reality getting the savannah back and restoring ecosystem to previous state 200 years ago.
