The SGS LTER site was extended in 1996 to include the adjoining 78,000-hectare Pawnee National Grassland. The Pawnee National Grassland extends discontinuously for 90 km to the East. The shortgrass prairie is typically grazed annually by domestic animals, and would have been grazed by wild buffalo prior to the mid-19th century. Some of the region has been converted to arable crops, and some has subsequently been restored to grassland under the U.S. Conservation Reserve Program. Click on the following linked phrases to view the climatological data for the CPER site, references and summaries , or the NPP files as listed by year and treatment below.
More detailed information is available in the associated guide document .