1. Carrying capacity
Carrying capacity refers to the number of individuals who can be supported in a given area within natural resource limits, and without degrading the environment for present and future generations.

2. Carrying Capacity may be
Carrying capacity may include ..
Carrying Capacity may be
Food
Water
Building materials
Waste processing
Leisure Space
Physical capacity
Ecological capacity
Emotional or psychological capacity
See diagram of graph….

4. WHAT IS A SUSTAINABLE YIELD?
It means that there is balance between what we take from the environment and what it can naturally replenish.
The yield could refer to plants, trees, animals, fish.
Maximum sustainable yield (MSY) means the amount that can be taken without affecting natural replacement.

5. MAXIMUM SUSTAINABLE YIELD
Pop at year end must = or exceed the Pop at start Final pop = Start pop + Growth – mortality & take If the result is positive then the MSY has not been exceeded. If it is negative the MSY has been exceeded.

7. See Fig 9.1 on page 71

10. Ecological Footprint
The demands that one individual makes on the environment.
Demands include:
Water
Food
Energy
Space
Waste disposal

11. The Ecological Deficit
is the level of resource consumption and waste discharge by a population in excess of local carrying capacity
Questions:
Have we reached a global ecological deficit?
If not, Can you identify any areas that are in deficit

12. The trend
Over centuries humans have taken more and more from the planet
Because there are more humans
And we each have more impact or footprint
We have been borrowing sun energy from the past – fossil fuels

13. GLOBAL ORCHESTRATION