1. Ch 6-3 Biodiversity

2. Biodiversity Biodiversity Biological diversity
Sum total of the genetically based variety of all organisms in the biosphere
SIMPLE TERMS – all genetically different organisms in a biosphere

3. Types of biodiversity Ecosystem diversity Species diversity
Habitats, communities, and ecological processes
Species diversity
Different species
1.5 million species found so far
Genetic diversity
Different forms of genetic information carried by all organisms

4. Value of Biodiversity Why is biodiversity important?
Earth’s greatest natural resource
Food
Industrial products
Medicine

5. Threats to biodiversity
So what can screw it up?
HUMANS!!!
Human activity can alter habitats
Hunt to extinction
Introduce toxic chemical to food web
Introduce foreign species to new environments

6. Habitat alteration
Humans destroy homes for organisms causing habitat fragmentation
Split ecosystem
Imagine tearing down a part of your house and putting a road. What happens to your lifestyle?

7. Demand for Wildlife products
Mink coats, chinchilla jackets, ivory piano keys, so on…
The more we demand, the more we pay for these items
Monetarily
Ecologically
We destroy food webs!

9. What is left…

10. Pollution Biomagnification
Fish-Eating Birds
Magnification of
DDT Concentration
Pollution
10,000,000
Biomagnification
Concentrations of harmful substances increase in organisms at higher trophic levels in the food chain or web
The top consumer always gets “jacked” by the chemicals!
Large
Fish
1,000,000
Small Fish
100,000
10,000
Zooplankton
1000
Producers
Water 1

11. Introduced species Invasive species
Species that are not native to an ecosystem
Competes with native species

12. What can we do?
Conservation
Protect species
Protect habitat

13. Homework
SA 6-3 #1-6

14. Classwork
Conservation handout
Handout of 6-3

15. Classwork – By yourself or pairs
Create a conservation flyer – “How we can conserve biodiversity” 20 points
Quick explanation of biodiversity (5 pts)
How we are affecting the environment (5 pts)
How we can help (5 pts)
Drawings in color and catchy title (5 pts)