The sagestitch map (Comer et al. 2002) was reclassified into general categories of tall sagebrush. The resulting grid was resampled from 90m to 2.5-km pixels. The output map was then processed using a 25-km moving window analysis to develop percent cover of tall sagebrush.
This dataset is Figure 1 from the cited publication (a PDF of the full article can be found on the "attachments" tab)
Abstract of entire publication:
Abstract. Degradation, fragmentation, and loss of native
sagebrush (Artemisia spp.) landscapes have imperiled these habitats and
their associated avifauna. Historically, this vast piece of the Western
landscape has been undervalued: even though more than 70% of all
remaining sagebrush habitat in the United States is publicly owned,
<3% of it is protected as federal reserves or national parks. We
review the threats facing birds in sagebrush habitats to emphasize the
urgency for conservation and research actions, and synthesize existing
information that forms the foundation for recommended research
directions. Management and conservation of birds in sagebrush habitats
will require more research into four major topics: (1) identification of
primary land-use practices and their influence on sagebrush habitats
and birds, (2) better understanding of bird responses to habitat
components and disturbance processes of sagebrush ecosystems, (3)
improved hierarchical designs for surveying and monitoring programs, and
(4) linking bird movements and population changes during migration and
wintering periods to dynamics on the sagebrush breeding grounds. This
research is essential because we already have seen that sagebrush
habitats can be altered by land use, spread of invasive plants, and
disrupted disturbance regimes beyond a threshold at which natural
recovery is unlikely. Research on these issues should be instituted on
lands managed by state or federal agencies because most lands still
dominated by sagebrush are owned publicly. In addition to the challenge
of understanding shrubsteppe bird-habitat dynamics, conservation of
sagebrush landscapes depends on our ability to recognize and communicate
their intrinsic value and on our resolve to conserve them.