environmental science chapter 10 biodiversity notes #2
TRANSCRIPT
Environmental Science
Chapter 10
Biodiversity
Notes #2
Biodiversity - Protecting
Public Policy Endangered Species – such low numbers remain,
that extinction is expected Ex. Florida Panther (loss of habitat)
Threatened Species – dropping numbers, likely to be endangered if they are not protected
Ex. Northern Spotted Owls Most in danger
those with small population Special habitat needs/ migration needs
Biodiversity - Protecting
Endangered Species Act (1973) 1. List the Endangered and Threatened
Species2. May not catch or kill the listed species 3. Gov’t can’t do any project that would
endanger the listed species4. The gov’t must come up with recovery
plans for each of the endangered and threatened species
The US has the strongest laws that protect endangered species
Biodiversity - Protecting
Preventing Extinction: IUCN – International Union for the Conservation of
Nature and Natural Resources 200 governments 700 private organizations
Prints a list of worldwide endangered and threatened species, along with methods of effective ways of helping preserve those species
CITES – banned ivory Saved African Elephants from poaching Why is that more effective than limiting ivory sales?
Biodiversity - Protecting
Saving Individual Species Captive Breeding Programs
Zoos, botanical gardens, and wildlife parks are ideal for this
Ex. California Condor Ex. Gray Wolf
Botanical Gardens Germ-Plasm Banks
Store genetic material or seeds Germ plasm = content of plant seeds Importance of genetic diversity
Biodiversity
Saving Ecosystems Puts focus on whole ecosystem rather than
Individual species Why?
Its saving all the species in one place, not just those that are on the list (which helps those on the endangered list and the unknowns)
The health of the biosphere depends on the health of individual ecosystems
Future of Biodiversity
Issues with protecting Biodiversity Developers v. Environmentalists
Why is there friction between these two groups? Short term v. long term resources Job security v. biodiversity Balancing human needs v. other species
Ex. Developed country v. developing country
The developing country destroys land/habitat for survival, hunting for food