0
 
GOALS OF CONVENTION ON BIODIVERSITY <ul><li>> 100,000 plant/animal species lost in last 5 years </li></ul><ul><li>Habitat ...
BIODIVERSITY <ul><li>How many species are there? </li></ul><ul><li>--  1.4 million named species (70% of which are      in...
 
 
 
 
WHAT THREATENS BIODIVERSITY? <ul><li>Background extinction (95% of all extinctions) </li></ul><ul><li>Mass extinction </li...
BIODIVERSITY <ul><li>1 mammal species </li></ul><ul><li>every 400 years </li></ul><ul><li>1 bird species/200 yrs   </li></...
ENDANGERED VS THREATENED Threatened:   population low but extinction less imminent Endangered:  nos so low that extinction...
BIODIVERSITY <ul><li>1. Small (localized) range </li></ul><ul><li>2. Extensive range but significantly modified by humans ...
THE GREATEST THREAT
BIODIVERSITY http://www.nesarc.org/ http://www.stopextinction.org/ http://www.audubon.org/campaign/esa/esa.html http://end...
Upcoming SlideShare
Loading in...5
×

Unit 3 pp #4

537

Published on

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
537
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
14
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Transcript of "Unit 3 pp #4"

  1. 2. GOALS OF CONVENTION ON BIODIVERSITY <ul><li>> 100,000 plant/animal species lost in last 5 years </li></ul><ul><li>Habitat loss is biggest current threat to biodiversity </li></ul><ul><li>Deforestation and forest degradation has increased </li></ul><ul><li>since the Rio Earth Summit </li></ul>“ The conservation of biological diversity, the sustainable use of its components and the fair and equitable sharing of the benefits arising out of the utilization of genetic resources” “ Biodiversity is a common concern of humankind and an integral part of the development process”
  2. 3. BIODIVERSITY <ul><li>How many species are there? </li></ul><ul><li>-- 1.4 million named species (70% of which are invertebrates) </li></ul><ul><li>-- 3 to 50 million species alive! </li></ul><ul><li>-- Only 10 to 15% live in North America </li></ul>
  3. 8. WHAT THREATENS BIODIVERSITY? <ul><li>Background extinction (95% of all extinctions) </li></ul><ul><li>Mass extinction </li></ul>
  4. 9. BIODIVERSITY <ul><li>1 mammal species </li></ul><ul><li>every 400 years </li></ul><ul><li>1 bird species/200 yrs </li></ul><ul><li>Now…………... </li></ul><ul><li>10,000 times the </li></ul><ul><li>background rate! </li></ul><ul><li>20-75 plant/animal </li></ul><ul><li>species each day? </li></ul>Background rates
  5. 10. ENDANGERED VS THREATENED Threatened: population low but extinction less imminent Endangered: nos so low that extinction imminent
  6. 11. BIODIVERSITY <ul><li>1. Small (localized) range </li></ul><ul><li>2. Extensive range but significantly modified by humans </li></ul><ul><li>3. Island dwellers (limited immigration; isolated evolution free from competitors, predators and diseases and thus fewer defences when introduced) </li></ul><ul><li>Low reproductive success </li></ul><ul><li>Large (easily hunted) </li></ul><ul><li>1973 ESA: 1,254 species on E and T list (9% inv) </li></ul>
  7. 12. THE GREATEST THREAT
  8. 13. BIODIVERSITY http://www.nesarc.org/ http://www.stopextinction.org/ http://www.audubon.org/campaign/esa/esa.html http://endangered.fws.gov/
  1. A particular slide catching your eye?

    Clipping is a handy way to collect important slides you want to go back to later.

×