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Shifting Desert Thresholds |
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Shifts in the location of Desert Threshold zones between years representing extreme annual rainfall conditions were inferred from mapping vegetation cover (in 5% Vegetation Cover grades) across the West to East transect in 1991 (a year with record low precipitation) and 1992 (a year with record high precipitation).
(in 5% Vegetation Cover grades) across the West to East transect in 1991 (a year with record low precipitation) and 1992 (a year with record high precipitation).

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