Overall restoration need was higher on Bureau of Land Management,

Overall restoration need was higher on Bureau of Land Management, State, and Private forests (52%, 45%, and 45% of forests per respective ownership)

with INCB018424 mouse Disturbance then Succession, the most common restoration need category on these ownerships (Table 3). Both the overall level and the type of restoration need varied greatly between forested biophysical settings. Specific restoration need transitions are illustrated in Fig. 2. Historical FRG 1 forests were both the most abundant (5,627,000 ha) and had the greatest overall restoration needs (2,857,000 ha, 51% of all FRG I forests, Table 4). Restoration needs within FRG I forests were dominated by the “thinning/low severity fire followed by growth” transition in the mid-development closed canopy s-class (1,695,000 ha, Table 4). We also found a substantial need for “thinning/low severity fire only” in the mid development closed canopy and late development closed canopy s-classes (390,000 and 261,000 ha respectively, Table 4). Forests historically characterized as FRG III were slightly less abundant (4,947,000 ha) and had lower overall restoration needs

(33% of all FRG III forests; Table 4). “thinning/low severity fire followed by growth” in the mid-development closed canopy s-class was again the most commonly needed restoration transition (420,000 ha; Table 3). Other commonly needed transitions were “opening/high severity fire” in mid-development closed Alectinib canopy s-classes (215,000 ha)

and “thinning/low fire only” in late development closed canopy s-classes (223,000 ha). Historical FRG IV & V forests were the least common (1,045,000 ha) and had the lowest overall restoration needs (23% of all FRG IV & V forests, Table 4). Within FRG IV & V forests restoration needs were evenly divided between the Disturbance Only and Succession Only categories in the early and mid-development s-classes (Table 4). Across eastern Washington and eastern and southwestern Oregon we 4-Aminobutyrate aminotransferase found the highest proportion of restoration need in the Oregon Southwest (1,321,000 ha, 51% of all forests) and Washington Northeast (955,000 ha, 46% of all forests) map zones (Table 5, Fig. 4 and Fig. 5). In contrast to other zones, the majority of overall Disturbance restoration needs (Disturbance Only plus Disturbance then Succession) in Oregon Southwest and Washington Northeast occurred off US Forest Service lands (Fig. 6) and were concentrated in the historically low severity fire regime forests (Fig. 7). Additionally, in both map zones the overall Succession restoration needs (Succession Only plus Disturbance then Succession) were nearly as great as the overall Mechanical/Fire restoration needs (39% vs. 33% and 23% vs. 25% of all forests in the map zone respectively; Table 5).

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