Question

(d) The Galapagos archipelago consists of both large and small islands. Based on theory of

island biogeography, what predictions can you make about colonization and extinction
rates of tortoises on each island? (4 points)

Answer 1

The theory of island biogeography predicts that colonization and extinction rates of tortoises on each island in the Galapagos archipelago vary based on island size and characteristics.

Step-by-step explanation:

The theory of island biogeography predicts that the colonization and extinction rates of tortoises on each island in the Galapagos archipelago will vary based on the size and characteristics of the islands. According to the theory, larger islands with better soil and more rainfall are expected to have higher colonization rates and support larger populations of tortoises. They offer more resources and habitats for tortoises to establish themselves and thrive. On the other hand, smaller islands with less favorable conditions will have lower colonization rates and higher extinction rates due to limited resources and higher vulnerability to environmental changes.

Answer 2

According to the theory of island biogeography, larger islands tend to have higher rates of colonization and lower rates of extinction for species than smaller islands. Therefore, it is likely that tortoises on the larger islands in the Galapagos archipelago would have higher colonization rates and lower extinction rates compared to tortoises on the smaller islands. This is because larger islands tend to have more diverse and productive habitats, which can support a greater number and variety of species. Additionally, larger islands are typically more isolated from mainland environments, which can protect species from outside threats such as introduced predators or competitors. On the other hand, smaller islands may have more limited resources and habitats, which can make them more vulnerable to extinction. Additionally, smaller islands may be more easily accessible to mainland species, which could lead to higher rates of colonization and competition with native species.

Step-by-step explanation: