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Extended Data Fig. 8 | Critical value of the Metabolic Index at the limit of
species geographical range (Φcrit). a, The values of Φcrit are compared using
two independent methods. The first (y axis) is determined from the peak in the
F 1 -score for categorization into occupied and unoccupied sites (see Methods).
The second (x axis) is determined from the bottom percentile (5–10%)
of Φ values inhabited by the species. b, The histogram of Φcrit is not sensitive to
the number of occurrence observations. c, For all species, waters with
lower Φ values than Φcrit exist within the depth range of these species, but lack
confirmed specimens. The dashed line indicates the 1:1 line.