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Which of the following is not a prediction arising out of Wilson-MacArthur's Theory of Island Biogeography?
The number of species on an island should increase with its size/area.
The number of species should decrease with increasing distance of the island from the source pool.
The turnover of species should be common and frequent.
Species richness on an island should be related to its average distance to the neighbouring islands.
Answers (1)
According to Wilson-MacArthur's Theory of Island Biogeography, the turnover of species is expected to be less common and less frequent. The theory suggests that larger islands with more habitat space and resources can support larger populations and a greater number of species, leading to more stable communities with lower turnover rates.
The theory predicts that smaller islands with limited resources and smaller populations will have higher turnover rates, as they are more prone to stochastic events and fluctuations in population sizes.
Therefore, the statement that the turnover of species should be common and frequent is not a prediction arising from Wilson-MacArthur's Theory of Island Biogeography.
Hence, the correct answer is option 3.
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