Island Biogeography

Question 1

what is the species-area hypothesis?

Answer 1

species diversity is driven by island size. Bigger area results in more species.

Question 2

what is species-distance hypothesis?

Answer 2

As distance from the mainland increases, species diversity decreases. Immigration rates are highest when closer to the main population source.

Question 3

what is the species turnover hypothesis??

Answer 3

The number of species on an island will reach an equilibrium as immigration and extinction rates, however the species composition will always be changing, resulting in high species turnover rates.