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. 2000 May 16;97(11):5954–5959. doi: 10.1073/pnas.100126797

Figure 1.

Figure 1

Percentage of all species of concern protected and percentage of sites required by different surrogate schemes for each of three biodiversity databases when all occurrences of each surrogate species are protected. (A) California coastal sage scrub database; (B) Columbia Plateau ecoregion; and (C) Environmental Protection Agency U.S. by county database. Background species are protected if at least one occurrence is included in the selected suite of sites. Surrogate set abbreviations: BC, big carnivore; C, charismatic; FR, high age at first reproduction; HG, habitat generalists; HS, habitat specialists; K, keystones; LL, long-lived; MC, multicategory tally; MD, most data available; ME, most expensive to maintain; MT, most threatened; R, riparian; RE, most valuable real estate; WR, most widespread; 5R, 5 random species; 10R, 10 random species; and 20R, 20 random species. For sets 5R, 10R, and 20R, we present means (±SE) of five sets. Numbers of surrogate species in each set are listed above each column.