breadth index


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Noun1.breadth index - ratio (in percent) of the maximum breadth to the maximum length of a skullbreadth index - ratio (in percent) of the maximum breadth to the maximum length of a skull
ratio - the relative magnitudes of two quantities (usually expressed as a quotient)
References in periodicals archive ?
Niche breadth for Military Macaw diet was calculated using the standardized Levins niche breadth index (Krebs 1989), where a value close to zero indicates dietary specialization and a value close to one indicates a broad diet (Colwell and Futuyma 1971).
The Military Macaw had a standardized Levins niche breadth index of B = 0.
Military Macaws had a narrow diet based on the Levins niche breadth index.