1. Please get out your outline on succession from yesterday and an extra piece of paper. Please have your permission slip and $10 on your desk. Please read the board!

2. Wildfire

3.  The study of relationships between biotic and abiotic factors.  Fire  Succession  Intermediate disturbance hypothesis  Niche  Habitat

4.  Fire wars 17-30  Can fire ever be beneficial?

5.  Returns nutrients to soil  Helps certain seeds germinate  Forest – clears underbrush /fuel  Prairie – kills trees  Light can reach soil  Help control pathogens/insects

8.  1944 – US Forest Service  1988 – fires in Yellowstone shocked nation  1990 – fire policy change  Fire wars 53-1:03

12.  Extinguish arson  Manage lightning strikes  Protect people  Prescribed burns used to reduce wildfire intensity and to take advantage of fire’s benefits to prairies/forests

14.  Yarnell Hill fire AZ (19 hot shots killed; lightning strike)  Yosemite National Park (campfire)  Perfect storm? ◦ Accumulated fuel ◦ More people living in remote areas ◦ Climate change and drought

15.  Range of chemical or physical conditions that must be maintained for populations of a particular species to stay alive and grow, develop, and function normally.

17.  Primary Succession  Secondary succession

18.  Range of tolerance  Intermediate disturbance hypothesis  Succession

19.  All things are interconnected.  Everything goes somewhere.  There’s no such thing as a free lunch.  Nature always bats last.