GGR Week 2

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GGR Week 2
2015-02-08 22:37:36

Biogeo Wk2
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  1. What is Buffon's Law?
    Environmentally similar but isolated regions have distinct assemblages of mammals and birds
  2. What was Charles Lyell's contribution to biogeo?
    He suggested, and showed evidence that sea level and climate change over time, and what we see now may not have been a long time ago. This helped explain why we see the distribution of species we see today.
  3. What was Alfred Russell Wallaces contribution to biogeo?
    He was a zoobiogeographer who came up with theories similar to Darwin. Why we see the assemblages of species we see, their boundaries, and why they exist where they do.
  4. What is biodiversity?
    • The total number of species (or other taxonomic level, or genetic varriation) in a given location.
    • Species richness.
  5. What is Alpha/Beta/Gamma Diversity?
    • •Alpha diversity: diversity within a given region
    • •Beta diversity: diversity between different regions
    • •Gamma diversity: total area biodiversity
  6. What is a species?
    A group that can make fertile offspring but cannot mate successfully with members of a different group.
  7. How many species are estimated to be on earth?
    12 million.
  8. What is Rapoport's Rule?
    Rapoport’s rule is an ecological hypothesis that states that latitudinal ranges of plants and animals are generally smaller at lower latitudes than at higher latitudes