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Schoener's index

A measure of niche overlap calculated as SI = 1 - (1/2) Σᵢ |pᵢₖ - pⱼₖ| where values approach 1 when resource use curves coincide perfectly and approach 0 when they don't overlap

methodological4 papers
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electivity index

A measure comparing the proportion of prey in predator diet to proportion in environment to detect selection or avoidance

methodological3 papers