Filters: Tags: Northern Spotted Owl (X)
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This polygon layer consists of home range core areas surrounding each territorial California spotted owl activity center detected after 1986. Home range core area sizes are as follows: 2,400 acres on the Hat Creek and Eagle Lake Ranger Districts of the Lassen National Forest, 1,000 acres on the Modoc, Inyo, Humboldt-Toiyabe, Plumas, Tahoe, Eldorado, Lake Tahoe Basin Management Unit and Stanislaus National Forests and on the Almanor Ranger District of Lassen National Forest, and 600 acres of the Sequoia and Sierra National Forests.
This layer contains polygon features of protected activity centers (PACS) for Spotted Owls in California. These areas were mapped as directed by the California Spotted Owl Environmental Assessment as interim direction adopted in the Region until the Environmental Impact Statement analysis is complete. Coding is for type of habitat as well as for timber management constraint.
Northern spotted owl (NSO) habitat for all ownerships within the Western Oregon Plan Revision (WOPR) area for year 2026. 25 meter pixels are classified as either Non-Habitat, Dispersal Habitat, Nesting Habitat, or Non-Capable. Classification of BLM lands are derived from the WOPR OPTIONS models. Classification of non-BLM lands are cross-walked from the WOPR Forest Structural Stages raster datasets.BLM: (Bureau of Land Management) WOPR: (Western Oregon Plan Revision) PRMP: (Proposed Resource Management Plan) NSO: (Northern Spotted Owl) IVMP: (Interagency Vegetation Mapping Project) LSOG: (Late Stage Old Growth) CVS: (Current Vegetation Survey) FIA: (Forest Inventory Analysis) This analysis addresses those portions...
These data were compiled to allow examination of northern spotted owl territorial occupancy dynamics, especially with regards to the roles played by habitat and competition with barred owl in past and future dynamics. Data are estimates of parameters derived from previous modelling of northern spotted owl territorial occupancy dynamics. These data were collected as part of monitoring of northern spotted owl demography. Associated code allows analysis of these estimates to understand the roles of competition and habitat in recent northern spotted owl declines and to predict the future of northern spotted owl under various management scenarios.
This dataset represents a first approximation of California Spotted Owl PACs (Protected Activity Centers) based on selecting the best habitat from a buffer around the owl nest locations. This was used for the southern California LRMP (Land Resource Management Plan) analysis but PACs should be delineated at the project scale.
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...
OPTIONS model- post processing- of structural stages, stand age, and Northern Spotted Owl (NSO) habitat index at years 0, 10, 20, 30, 40, 50, 100 for the Roseburg Sustained Yield Unit (SYU) portion of the Western Oregon Plan Revision (WOPR) area. *See Appendix R of the Western Oregon Plan Revision Proposed Resource Managemnt Plan for further description.BLM (Bureau of Land Management) WOPR (Western Oregon Plan Revision) WOPR Theme Group: OPT (Options) WOPR Purpose: O (Options) GLUA: General Land Use Allocations PRMP: Proposed Resource Management Plan ASQ (Allowable Sale Quantity) SYU (Sustained Yield Unit) ESC (Existing Stand Condition) M4C WPR_ID (a unique identifier generated in the options harvest model preparation...
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