1. Monocultures
L.O: to describe the impact of monocultures on biodiversity
Starter: AS BIOL1 recap!
If Mono = one, ?? = Two, ?? = Three, ?? = Six
Do you know any others? (Chemists!)

2. Definition The cultivation of a single crop in a given area.
What? Why? So? Therefore?

3. Why Monocultures are Created
What? Why? So? Therefore?

4. Why Monocultures are Created
Advantages of monoculture:
Reduced plant competition for nutrients, space and solar radiation
Control of undesirable (unprofitable) organisms
Reduction of costs by limitation of specialized machinery required for arable operations
Maximize profit from the growing of high gross margin crops
What? Why? So? Therefore?

5. Impacts of Monocultures
Paper simulation!
Light Green is Noble Fir
Red is Western Red Cedar
Blue is Vine Maples
Yellow is Western Hemlocks
Orange for White Fir
Pink is Bigleaf Maple
Yellow is Western Dogwood
What? Why? So? Therefore?

6. When a habitat is very diverse with a variety of different species, it is much healthier and more ecologically stable.
One of the reasons for this is that disease doesn't spread as easily in a diverse community. If one species gets a disease, others of its kind are far enough away (due to the variety of other organisms) that disease is often stopped at the one or two individuals.

7. What type of competition would be present in the wood
What type of competition would be present in the wood? In the monoculture?
Which forest would have more ecological stability? Why?
Why didn't the disease spread as fast among the Douglas firs as it did in the first simulation?
Why would you need to use more insecticides in monoculture? Is this good or bad?
Why have farmers been told to plant hedgregrows around their fields?
Extension: Many species can only live/reproduce in 1 type of forest. The spotted owl is an example - it can only live and successfully reproduce in old growth forests(big, old cedars, hemlocks, etc.). If these old growth forests are cut down, it's unlikely this owl will survive. Environmentalists call it an "indicator" species." What does this mean? Why be concerned about 1 species?

8. Northern Spotted Owl

9. Northern Spotted Owl
Have a narrow range of ecological tolerance and their
presence or absence indicates the ‘health’ of an ecosystem

10. Impacts of Monocultures
What? Why? So? Therefore?

11. Biodiversity
What is it?