Definition: The spearscale, also known as the Spearman-Zeilberger scale, is a measure of population size in terms of the number of individuals that can be reliably counted from a given sample. It is used for comparative purposes and represents the number of "spearheads" (individuals with a high degree of similarity) in a population when it is divided into equal-size groups. This scale is particularly useful for comparing populations where differences in size are not easily quantifiable, such as species or
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