Table S1 - Representation of Ecological Systems within the Protected Areas Network of the Continental United States
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Area (ha) and percent area of ecological systems by protection status nested into Level I and II land cover groups [23], [24]. All 5 Level I groups, 37 Level II groups, and 518 ecological systems are listed. See Table 1 for protection status descriptions. Only non-modified, non-aquatic ecological systems are included (n = 518). (XLSX)
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2015-12-02
