1. Exam #3 F 4/9 (bring cheat sheet)
Today: Uncertainty
Exam #3 F 4/9 (bring cheat sheet)
Q&A Th 4/8 from 6-8pm in BEL 328

2. Animal behavior is unpredictable and inexplicable
Bears (1993) Ian Stirling et al., Weldon Owen Pty Ltd pg 231

3. http://www. wunderground. com/cgi-bin/findweather/getForecast

4. How Many Animals Do We Want to Save
How Many Animals Do We Want to Save? The Many Ways of Setting Population Target Levels for Conservation
ERIC W. SANDERSON
November 2006 / Vol. 56 No. 11 BioScience 911

5. What are the consequences of setting the wrong number?
Too high
Too low

6. Can a number of individuals be set?
Scientists are reluctant to set a specific number
Policymakers want information from scientists

7. Yellowstone NP is not big enough to support a viable grizzly bear population

8. Average height in bio 301M 1pm class vs. 2pm

9. Average height of bio 301M 1pm vs. 2pm class
… OR... Average height of male vs female bio 301M students

10. Looked at the results of 89 different ecological restorations.
Enhancement of Biodiversity and Ecosystem Services by Ecological Restoration: A Meta-Analysis
J M Rey Benayas, A C Newton, A Diaz, J M Bullock Science 28 August 2009: Vol no. 5944, pp – 1124
Looked at the results of 89 different ecological restorations.

11. (nutrients and primary production)
(goods)
(climate, water, etc)
Fig 1: Enhancement of Biodiversity and Ecosystem Services by Ecological Restoration: A Meta-Analysis
J M Rey Benayas, A C Newton, A Diaz, J M Bullock Science 28 August 2009: Vol no. 5944, pp

12. The P value tells us the probability that the differences or predictions in our data are from random chance.

13. The P value tells us the probability that the differences or predictions in our data are from random chance.
P< 0.05 (less than 5% chance of randomness)
Is usually the acceptable cut-off.

14. (nutrients and primary production)
(goods)
(climate, water, etc)
Fig 1: Enhancement of Biodiversity and Ecosystem Services by Ecological Restoration: A Meta-Analysis
J M Rey Benayas, A C Newton, A Diaz, J M Bullock Science 28 August 2009: Vol no. 5944, pp

15. We can have uncertainty about past events... or future events
World Population, human

16. 36.4 9 2.3 UN Department of Economic and Social Affairs
Population Division (2004)

17. Annual % increase in global population
Fig 53.23
Predictions are based on current conditions and trends

23. Exam #3 F 4/9 (bring cheat sheet)
Q&A Th 4/8 from 6-8pm in BEL 328