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This theme maps Late-Successional Reserves associated with occupied marbled murrelet sites. The criteria for mapping these areas are identified on pages C-10 of the Northwest Forest Plan Standards and Guidelines( See Supplemental Info). Supplemental direction to the administrative units in BLM IM OR-2003-001 stated that protection will be afforded to all contiguous existing habitat and recruitment habitat (stands that are capable of becoming murrelet habitats within 25 years) for marbled murrelets within a ½-mile radius of any site where occupation behavior (e.g., active nest, fecal ring, eggshell fragments, or birds flying low, through, into or out of the forest canopy within or adjacent to a stand) has been verified....
Northern Spotted Owl habitat within Western Oregon. When the simple age class of a tree stand proved not to be sufficient in determining spotted owl habitat, BLM district biologists returned to the field during the 1991 field season and revisited all 60,000 Operations Inventory timber stand units in Western Oregon. They classified each stand as a 1, 2, or 3, depending on the type of owl activity present, and added that to the Micro*Storms Operations Inventory database. In November, 1991, that information was used to create this new theme from the Forest Operations Inventory spatial theme. In March 1993, this theme was revised to include a 4th category, that land that -due to its nature- could never be developed...

    map background search result map search result map WOPR Northern Spotted Owl Habitat Polygon WOPR Occupied Marbled Murrelet Sites Polygon WOPR Occupied Marbled Murrelet Sites Polygon WOPR Northern Spotted Owl Habitat Polygon