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Diversity

Diversity. Galapagos Islands. Galapagos Islands. Located about 600 miles west of Ecuador Consists of 13 volcanic islands and numerous islets and rocks Discovered by accident in 1535 First scientific study done in 1835 by Charles Darwin while aboard the HMS Beagle. Galapago’s Finches.

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Diversity

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  1. Diversity

  2. Galapagos Islands

  3. Galapagos Islands • Located about 600 miles west of Ecuador • Consists of 13 volcanic islands and numerous islets and rocks • Discovered by accident in 1535 • First scientific study done in 1835 by Charles Darwin while aboard the HMS Beagle

  4. Galapago’s Finches

  5. Diversity of Beak Forms • Beak form and function are related to survivial

  6. Natural Selection • Organisms with characteristics suited to their environment will survive and produce the most offspring • “Survival of the fittest” • Adaptations will be passed to future generations

  7. Niches • Role of an organism in an ecosystem • Includes resources utilized, relationships, and activities the organism engages • Each species has its own niche

  8. Terminology • Ecosystem – all living organisms in a given area and their interactions with their environment • Species – a group of organisms that is able to breed freely and produce viable offspring

  9. Bird’s Feet

  10. Diversity of Beak Forms

  11. Diversity of Beak Forms

  12. Diversity of Beak Forms

  13. Habitat Requirements • What do you need to survive?

  14. Habitat Requirements • Food • Water • Shelter • Space

  15. Biotic Potential

  16. Limiting Factors • Interspecies competition • Intraspecies competition • Disease • Predation • Disasters • Balance other factors such as birth rate, early reproductive age. • Effect is to increase death rate • Produces S-curve

  17. S Shaped Curve

  18. Carrying Capacity Number of individuals an ecosystem can support indefinitely. Resources are not used faster than they are replaced!

  19. Human Interference • Increase available food sources • Decrease available space • Elimination of predators

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