Ecological drivers in southwestern ecosystems
Today's
powerpoint file
Regional threats to biological diversity will be discussed within the
context of four coarse-scale ecosystems: conifer forests, evergreen oak
woodlands, savannas, and deserts
Historical drivers:
- fire
- livestock grazing
- logging
- urbanization
- agricultural expansion
Contemporary drivers:
- livestock grazing
- (prescribed) fire
- urbanization
- biological invasions
- climate change
Recommendations