1. The Value of Ecosystems
BIODIVERSITY UNDER THREAT
Learning intention:
To identify the various uses of ecosystems
Be able to distinguish between the economic, environmental and cultural values

2. How many can you come up with?
Uses of an ecosystem

3. Ecosystem value
When talking about the value of ecosystems and biodiversity we are not just talking about financial value, although this does need to be considered
Values can be categorised into
Direct-use values
Indirect-use values

4. Ecosystem value
Direct-use values are those where humans are putting biodiversity to use
E.g.

5. Ecosystem value
Indirect-use values include the services that biodiversity provides
E.g.

6. Ecosystem value
The role which biodiversity plays can also be broken down into the categories of:
Ecological
Economic
Cultural/aesthetic
I would like you to sort the cards into these 3 categories

7. Ecosystem value
Ecological Values
Economic Values
Cultural Values

8. Case Study – Coral Reefs
Using the hand out I would like you to create a mind map of all the ways which coral reefs are important

9. Threats to biodiversity
BIODIVERSITY UNDER THREAT
Learning intention:
To understand the threats affecting biodiversity
To be able to examine each threat and decide upon its extent

10. What can you think of?
What do you think are the main threats to biodiversity?

11. WRI Six threats
The World Resources Institute has identified six main threats I would like you to rate the six threats suggested by the WRI in order of importance 1= Most important 6= Least important Be prepared to justify your choice

12. WRI Six Threats
Do you think these threats identified by the WRI cover all the threats biodiversity faces?
What is missing?

13. What are the threats to biodiversity?
Extinction is a natural event
BUT human activity is threatening species and ecosystems on a scale that is unprecedented
It is predicted that up to plant species could become extinct by 2050 if the current trend continues
An increasing global population, rising consumption and economic activity, and globalisation are all playing a part

14. Threats facing biodiversity
What does this show?
What is the biggest threat that biodiversity is facing?
Is this the same in all regions?
How has this changed over time?

15. Why are these the biggest threats?
Using the fish book (pg ) and your own knowledge I would like you to create a detailed mind map of the threats facing biodiversity

16. How to mind map

17. Food for thought
Why worry about a few species becoming extinct when there are millions more waiting to be discovered?