Doug Spencer is the State Grazing Specialist for the Natural Resources Conservation Service. He's based in Kansas, and his mission is to help ranchers and land managers maintain grasslands throughout his area and even across the high plains.
While he works in a myriad of areas, his passion is native rangeland preservation. He lists several links to help range managers have the best data and info to help in this effort.

douglas.spencer@usda.gov

Rangeland Analysis Platform (RAP): https://rangelands.app/rap/

 RAP Production Explorer: https://rangelands.app/production-explorer/

Working Lands for Wildlife (WLFW): https://www.wlfw.org/landscapes/great-plains/

 Vulnerability Guide for Woody Plant Encroachment: https://www.wlfw.org/wp-content/uploads/2022/11/E-1054WoodyEncroachment.pdf

 Yield Gap Info: https://www.wlfw.org/yieldgap/

Flint Hills - 14th most intact grassland: https://conbio.onlinelibrary.wiley.com/doi/epdf/10.1111/csp2.626