BIS 2B Lecture Notes - Lecture 23: Fire Triangle, General Officer, Competitive Exclusion Principle

• School: UC-Davis
• Department: Biological Sciences
• Course: BIS 2B
• Professor: Mark Schwartz; Sharon Strauss

Document Summary

Disturb community and reset competitive advantage that one species has over another and prevent competitive exclusion. Disturb community resets succession and prevents communities reaching end of succession. Human lives - 47 people died in 2017 from wildfire, 2018 looks to be in the hundreds. Economics - homes in fire prone areas may be destroyed and insurance cost of camp and woolsey fires between and billion, insurance companies may not be able to afford that. Wildfire management costs - billion for ca, billion for us. General fire triangle - oxygen, heat and fuel. Wildfire - fuel is vegetation and management of it, heat is the climate which dries fuels as well, oxygen is the people in the area directly or indirectly starting fires. Dry vegetation, warm temp, low humidity equals high flammability. Species adapt to live in fire common area. Resprouting behavior - allows resprouting to occur underground after the fire kills plants above ground.