1. Categories of Species

2. Native Evolved within the ecosystem.
Is part of the SYSTEM… Plays a role in how the system functions.

3. Invasive (non-native, alien)
Did NOT evolve within the ecosystem
Brought intentionally or accidentally
Globalization has caused the spread to increase exponentially!
Kudzu…

4. Indicator “Indicates” that something is disrupting the ecosystem.
Birds, fish, amphibians… (example: hermaphrodite frogs… something’s wrong with the water!)

5. Keystone
Plays a vital role in the function/survival of the ecosystem.

6. Foundation Provides the foundation for a habitat
What’s the difference between Keystone and Foundation?
Foundation provides/maintains the foundation for the habitat
Keystone maintains the ecosystem (they do not directly “form” the habitat, but they keep it going).

7. Generalists
Thrives in a wide variety of conditions and uses a wide variety of resources.

8. Specialists
Can only live in a narrow range of conditions.

9. Endangered
In danger of going extinct.

10. Threatened
In danger of becoming endangered.

11. Extinct Locally: extinct from an area
Ecologically: the population is so low that the species no longer fulfills its role in the ecosystem.
Wolves in Yellowstone
Biologically: GONE FOREVER!!

12. Biologically Extinct…