This Instruction Memorandum (IM) provides guidance for incorporating and analyzing thresholds and responses, as appropriate, into terms and conditions of grazing permits and the associated National Environmental Policy Act (NEPA) analysis within designated Greater Sage-Grouse (GRSG) Habitat as described in the Records of Decision for the Approved Resource Management Plan...
A major goal in greater sage-grouse (Centrocercus urophasianus, hereafter ‘sage-grouse’) conservation is to spend limited resources efficiently by conserving large and functioning populations. We used maximum count data from leks (n = 4,885) to delineate high abundance population centers that contain 25, 50, 75, and 100% of the known breeding...
Trends in greater sage-grouse breeding populations are typically indexed by determining the peak number of males attending a lek in a lekking season. Numerous studies have estimated negative trends in sage-grouse breeding populations over time via data collected for the last 50 years. However, the inherent bias in data collection...