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Biodiversity

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Biodiversity: All of the organisms on earth (or in an ecosystem) added together. ... Exxon Valdez. Aquatic ecosystems are most susceptible ... – PowerPoint PPT presentation

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Title: Biodiversity


1
Biodiversity
  • A look at earth and all it has to offer
  • dont have to write

2
Biodiversity
  • Biodiversity All of the organisms on earth (or
    in an ecosystem) added together.

3
Types of Diversity
  • Ecosystem Diversity Variety of habitats,
    Communities, and ecological processes
  • Species Diversity number of different species
  • About 1.5 million species identified
  • Genetic Diversity Sum total of all forms of
    genetic info carried by organisms

Vs.
4
Some good news . . .
  • Foja Mountains
  • Lost World Found click to go

5
Biodiversity as Resource
  • Biodiversity is one of Earths greatest natural
    resources!!!
  • Species provide us with foods, industrial
    products, and medicines
  • including painkillers, antibiotics, heart drugs,
    antidepressants, and anticancer drugs!

6
Threats to Biodiversity
  • Human activity directly threatens biodiversity!
  • Extinction Occurs when a species disapear from
    all or part of its range
  • Endangered Species Is in danger of exctinction

7
1) Habitat Alteration
  • Changing a habitat
  • Habitat Fragmentation when development splits
    habitats into pieces.

8
Attempting to help
9
2) Demand for Wildlife Products
10
3) Pollution
Exxon Valdez
Aquatic ecosystems are most susceptible
11
  • Biological Magnification amount of a harmful
    chemical increase in organisms at higher trophic
    levels in a food web.

DDT fair to prove it is safe!!!!????
Opposite of an Energy Pyramid as it builds up at
each level (lipid soluble)
12
4) Introduced Species
  • Nonnative not from here
  • Invasive Species
  • Increase their population rapidly
  • New environment lacks the parasites and predators
    that controlled their population in old
    environment.

Russian Knapweed
Colorado potato beetle
13
Conservation?!?
  • Biodiversity Hotspots the richest and most
    threatened reservoirs of plant and animal life on
    earth!
  • Biodiversity Hotspots Webpage click to open
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