Poster Number 29
Sunday, 5 October 2008
George R. Brown Convention Center, Exhibit Hall E
The Konza Prairie LTER site, in north-central Kansas, is a relatively undisturbed, tallgrass prairie on a highly dissected terrain underlain by Permian limestone and shale bedrock and capped variable thicknesses of original or reworked Pleistocene loess. Some of the stream-valley bottoms have been used historically for cultivation of wheat, milo, or soybean. A comparison of the shallow groundwater chemistry beneath undisturbed and cropped valley bottom reveals differences in solutes and CO2 content that are related to disturbance. This site may be an excellent analog for changes that have occurred under cropped land throughout the Midwest USA.