1. Warmup How can biodiversity be measured?
Why is maintaining biodiversity important? (Relate to changes in the environment…)

2. Effect of Humans on the Biosphere
2.7.3a Explain effects of human population growth, habitat alteration, introduction of invasive species, pollution, and overharvesting on various plant and animal species in NC.
2.7.3b Explain effects of invasive nonnative species (plant or animal) on an NC ecosystem.

3. Habitat Alteration
As the human population grows, habitats are altered

4. Overharvesting
Overharvesting is the catching or removing from a population more organisms than the population can replace

5. Overharvesting: Plants
Long leaf pine and white cedar forests were decimated in our state for the lumber industry.
Photo actually from WA state… gets the point across. 

6. Overharvesting: Animals
Market hunting (commercial hunting) at the turn of the century exploited natural resources for profit.
For instance, beaver were completely exterpated from the state, river otters were no where to be found in the western part of our state, it's estimated that only 10,000 deer were left, very few wild turkey were left, and black bear were found only in the deepest mountain valleys or thickets in Pocosins near the coast.

7. Overharvesting: Animals
Then game laws were enacted to protect our game animals from over hunting by creating hunting seasons and limits.
Black bear and white tailed deer have rebounded naturally, while river otter, beaver, and wild turkey were brought in from other states to repopulate areas of our state.

8. Invasive Species Native species
Organisms that naturally live in a certain area.
Evolved in that area over time
Typically co-evolved with other species that keep its population in check through predation, competition or disease.
Non-native species (exotic or alien species)
Organisms introduced or moved to an area by humans where they don’t naturally occur.
Not necessarily harmful…
Harmful ones are called invasive species
Outcompete native species in a natural community or cause ecological or economic problems
No natural controls to limit their population
Typically have a high rate of reproduction and tolerate a large variety of conditions
Take over!

10. Extra Credit: Invasive or Biodiversity App
What app did you use?
How did you use it?
What was the interface
How well worked?
Who you think it was made for?
How you think it could be made better?
Be descriptive!!!

11. Invasive Species Describe the species (picture)
Where did it come from? (map)
Where is it now?
How did it get here? (Think why)
Why do we care? (What problems does it cause?)