In Nebraska, for instance, the Nature Conservancy is conducting what it calls "prescribed burns" of the mixed-grass prairie.

It grades into savanna and woodland to the east and south, and into shorter mixed-grass prairie to the west.

Influence of prescribed fire history on habitat and abundance of passerine birds in northern mixed-grass prairie.

Grasslands National Park is one of the last remaining sections of mixed-grass prairie in Canada.

Approximately 68 percent of the land in the three county area remains virgin sod - native mixed-grass prairie.

Above ground, the park includes the largest remaining natural mixed-grass prairie in the United States.

The hills are a dissected plain covered by tallgrass and mixed-grass prairie.

The habitat is generally mixed-grass prairie on limestone, sandstone, shale, or siltstone.

It also grows on mixed-grass prairies, sometimes codominating with little bluestem.

Because of this ecotonal mixing, the number of plant species found in mixed-grass prairies exceeds that in other prairie types.