Question
Explain Gause's Competitive Exclusion Principle with the help of a suitable example.
✓
Answer
- Gause's Competitive Exclusion Principle states that two closely related species competing for the same resources cannot co-exist indefinitely and the competitively inferior one will be eliminated eventually.
- This is true not only when the resources are limiting but also when resources are abundant.
- For example, the Abingdon tortoise in Galapagos Islands became extinct within a decade after the goats were introduced into the Island.
- It is probably due to the greater browsing efficiency of the goat or the feeding efficiency of one species (tortoise) is reduced by the interfering presence of the other species (goat).
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