Lab_ Island Biogeography

Lab Group Yellow Large far Green Large near Blue Small far Red Small near 1 2.6 1.6 0 0.4 2 3 1 0 0.8 3 4 3 1.2 2.4 4 1 1.2 0.8 1.2 5 3 2.2 0.8 1 Mean 2.72 1.8 0.56 1 1. Using the class data, rank the islands in order of successful immigration from least to greatest. a. Blue, Red, Green, and Yellow 2. Why is it more accurate to use the class data than individual group data? a. Because each group has done 5 rounds of testing and since there are 5 groups it would result in a total of 25 rounds of test which is more accurate than just 5 rounds of testing from 1 individual group since there is more testing being done combined. 3. How does successful immigration rate relate to the anticipated biodiversity of each island? a. The islands with the highest immigration rates should have the highest biodiversity because the island would have more species in its environment because of migration from different environments. 4. Explain the difference between local extinction and species extinction a. Extinction is the complete disappearance of a species, but Local extinction is the disappearance of a species only from a given area. 5. How does successful immigration rate relate to the local extinction rate of each species a. If there is a high successful immigration rate, there are likely few species present on the island,so there would be a low local extinction rate. But as more species reproduce on the island, the local extinction rate will increase, competing for resources, while immigration becomes less successful on the heavily populated island (until enough species die out for the successful immigration rate to increase again, approaching an equilibrium where the immigration and extinction rates balance out).