Extended Data Table 2 Weighted Relative Impact score validation

From: Antarctica’s wilderness fails to capture continent’s biodiversity

  1. Field sites29,68 used to validate the relationship between WRI scores and sites likely to have been impacted by human activity in the McMurdo Dry Valleys region (Extended Data Fig. 1). The WRI scores were calculated by multiplying visitation record data by the proportion of ice-free area per 25-km2 cell and the proportion of the ice-free area in the eight adjacent cells, a measure of ice-free area connectivity. Sites with WRI scores ≤20 are considered to have experienced negligible impact from human activity. *Impact categories: I, impacted; N, negligibly impacted.
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