Take these Brazilian species features for example.
A gap analysis gives us useful quantitative information about how much of our species features are already within conservation areas.
Scott JM, Davis F, Csuti B, Noss R, Butterfield B, Groves C, Anderson H, Caicco S, D’Erchia F, Edwards Jr TC. 1993. Gap analysis: a geographic approach to protection of biological diversity. Wildlife monographs:3–41. JSTOR. https://www.jstor.org/stable/3830788