Summary
GGH1503 SUMMARY NOTES CHAPTER 9
- Institution
- University Of South Africa (Unisa)
GGH1503 SUMMARY NOTES CHAPTER 9
[Show more]
Content preview
Sustaining Biodiversity:The Species Approach
Chapter 9
,Core Case Study: The Passenger Pigeon:
Gone Forever
Passenger pigeon hunted to extinction by 1900
Commercial hunters used a "stool pigeon”
Archeological record shows five mass
extinctions
Human activities: hastening more extinctions?
,9-1 What Role Do Humans Play in the
Premature Extinction of Species?
Concept 9-1A We are degrading and
destroying biodiversity in many parts of the
world, and these threats are increasing.
Concept 9-1B Species are becoming extinct
100 to 1,000 times faster than they were before
modern humans arrived on the earth (the
background rate), and by the end of this century,
the extinction rate is expected to be 10,000
times the background rate.
, Human Activities Are Destroying and
Degrading Biodiversity
Human activity has disturbed at least half of the
earth’s land surface
• Fills in wetlands
• Converts grasslands and forests to crop fields
and urban areas
Degraded aquatic biodiversity
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller MissFancyPants97. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R50,00. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
59325 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now