In the article linked below is a concise history, and some current news of human influences on our prairie and savanna ecosystems.
The Willamette Valley, SW Washington, Puget Sound outwash prairies, and southern B.C. are all connected (geologically and topographically). This pops out on a foggy day as seen from a weather satellite: note the light gray fogged-in valleys all the way from Oregon to Canada!
Had to share something I stumbled on while looking for a satellite image of the vast Eastern Oregon wetland that is the Malheur National Wildlife refuge. The accompanying text is very important. These carbon sinks are old growth conifer forests, not white oak woodlands, so a little departure from this blog’s theme.
Another feature not mentioned in the text is that “checkerboard lands” are very clearly defined on this map. These are our legacy from US government donation of the spoils of conquest to the railroad barons more than a century ago.