Final answer:
Island biogeography theory suggests that the predicted number of species on an island will increase as the island's area increases due to greater resource availability and habitat diversity.
Step-by-step explanation:
The concept in question is related to the island biogeography theory, which addresses the dynamics of species colonization and extinction on islands or isolated habitats. According to this theory, the number of species on an island tends toward an equilibrium value that is determined by the balance between immigration rates of new species and the extinction rates of existing species.
When considering the effect of island area on species number, the theory predicts that as the area of the island increases, the number of species also increases. This is because larger areas can support more species due to a greater availability of resources, diverse habitats, and lower extinction rates.