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Biodiversity

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Biodiversity C-6-3 Biodiversity - the sum of all genetically based org. in the biosphere Other types of diversity ~ Ecosystem diversity - includes habitats ... – PowerPoint PPT presentation

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Title: Biodiversity


1
  • Biodiversity
  • C-6-3

2
  • Biodiversity
  • - the sum of all genetically based org. in the
    biosphere

3
Other types of diversity
  • Ecosystem diversity - includes habitats,
    communities, and processes
  • Species diversity - of dif. species in
    biosphere
  • Genetic diversity - all dif. forms of genetic
    info for all life forms on the planet!

4
Benefits
  • food
  • medicine - pain killers, antibiotics, heart
    drugs, anticancer drugs etc.
  • industrial products

5
Threats to biodiversity
  • Human impact is 1

6
Threats to biodiversity
  • 1.) Habitat alteration
  • land development splits habitats and
    destroys others
  • this makes the species that live there more
    fragile and open to harm from further change

7
Threats to biodiversity
  • 2.) Demand for wildlife products
  • hunting has made some species extinct!
  • fur, meat, body parts thought to have
    medicinal qualities
  • most endangered species are now protected
    from hunting - but poaching continues to be
    huge problem

8
Threats to biodiversity
  • 3.) Pollution - major factor is toxic compound
    accumulation - Biological magnification - fig.
    6-16

9
Threats to biodiversity
  • 4.) Invasive species - non-native species that
    reproduce rapidly due to lack of predators.
  • often overcrowd native species and overtake the
    habitat thus destroying or changing the ecosystem
  • ex zebra mussles - in Lake Erie - have pushed
    some species to near extinction!

10
Conservation Strategies
  • captive breeding programs at zoos
  • set aside land to protect certain ecosystems
    - parks/reserves
  • limiting hunting and fishing to certain
    seasons
  • imposing stricter laws against pollution
  • and mining for natural resources
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