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Scott Pike, Willamette University
Biodiversity
2010 Advocacy Institute
International Debate Education Association and Willamette University
Biodiversity
• Defining• Valuing• Measuring• Extinction
– Rates– Modern Pressures
• Biodiversity Policy• Managing for Biodiversity
Defining Biodiversity
• Genetic diversity - variety and variability in genetic makeup among individuals of a single species
Fruit of Lycopersicon spp. and cultivars of L.esculentum (cultivated tomato)
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Defining Biodiversity
• Species diversity - variety and variability of species in different habitats
Defining Biodiversity
• Ecosystem diversity - variety and variability of biological communities that interact with one another and their non-living environments
Fig. 9-3, p. 186
Effects of a .1% extinction rate
Number of years until one million species are extinct
Fig. 9-5, p. 188
Stepped Art
Fixed migratory patterns
Blue whale, whooping crane, sea turtle
Feeds at high trophic level
Bengal tiger, bald eagle, grizzly bear
Narrow distribution
Elephant seal, desert pupfish
Commercially valuable
Snow leopard, tiger, elephant, rhinoceros, rare plants and birds
Blue whale, giant panda, rhinoceros
Characteristic
ExamplesLow reproductive
rate (K-strategist)
Rare African violet, some orchids
Large territoriesCalifornia condor, grizzly bear, Florida panther
Specialized niche
Blue whale, giant panda, Everglades kite
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