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Percentage of species protected and percentage of sites required if 1, 3, 5, 10, or all populations of surrogate species are protected for top-performing surrogate sets using the California coastal sage scrub database. “ALL” results are from Fig. 1. Sites were chosen by using the PA2 algorithm (35), which minimizes the cost in sites while still satisfying the representation criteria (1, 3, 5, or 10 occurrences) for surrogate species.
