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Fully flexible areas, near minimum set, Ecuador

 

Selects a near-minimum set of areas to represent all taxa at least once.  This is a progressive rarity algorithm (Margules et al. 1988, Williams 1999a).  First it selects all areas with taxa that are equally or more restricted than the representation goal.  Then the algorithm follows a set of rules:  rarest + next rarest + first encountered.  The ruleset can be extended to five criteria by adding in "next rarest" two additional times.  This is a rather time-consuming process; users should be prepared to wait several hours for completion of this analysis.