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Latitudinal Species diversity gradients

Latitudinal Species diversity gradients. Miller 8-1. Latitude. Distance North or south of the equator. What changes as you move away from the equator?. More sunlight at equator. Warmer More seasonality as you move away from the equator. Species diversity.

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Latitudinal Species diversity gradients

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  1. Latitudinal Species diversity gradients Miller 8-1

  2. Latitude • Distance North or south of the equator. • What changes as you move away from the equator?

  3. More sunlight at equator. • Warmer • More seasonality as you move away from the equator.

  4. Species diversity • Diversity refers to the number of different species in an area. • An area with lots of different kinds of species is said to have a high species diversity

  5. Amphibian Species Diversity

  6. Where is most of our species diversity located? • Tropical forests • Coral reefs • Deep sea • Tropical lakes

  7. Terrestrial species diversity

  8. Latitudinal species diversity gradient • For most groups of plants and animals, species diversity decreases with distance from the equator. • Highest in tropics and lowest in polar tundra

  9. What are some reasons for this pattern? • Resource availability is higher and more reliable in the tropics • Evolution is faster in the tropics – less disturbance • More diseases and parasites – keep any one species from dominating

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