APFIVE Extinction and Exploitable Niches
In an island ecosystem, a keystone predator has recently gone extinct. Which of the following observations would provide the strongest evidence that this extinction created exploitable ecological niches?
A
Multiple prey species evolving to occupy the predator’s former niche
B
Uniform decrease in biodiversity across all trophic levels
C
Immediate replacement by a single invasive predator species
D
Stability in population sizes of all remaining species
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