Comparing the impacts of patch-burn grazing on vegetation in two northern tallgrass prairies

Presenter: Fred Harris, plant ecologist, MN DNR (retired)

The recorded Zoom presentation is available on the Video page.

Plant of the Month: The genus Phemeranthus “Everything you ever wanted to know about Phemeranthus, but…”

Talk Summary: MN Biological Survey has long term projects to monitor the effects of management on the prairie in two of the earliest and largest patch-burn grazing projects in Minnesota: at Chippewa Prairie and at Hole in the Mountain WMA. This presentation will review patch-burn grazing management, differences in results related to different cattle densities, and overall conclusions regarding the importance of monitoring, adaptive management and research in prairie management.

Presenter Bio: Fred Harris is a plant ecologist who worked for the Minnesota Biological Survey from 1992 to 2024 (just recently retired). He conducted surveys to document what remains of significant natural areas and rare plant populations in 27 counties in Minnesota – mostly in the prairie region but also the Big Woods and a portion of the Blufflands. Since 2010, he has also coordinated several projects to monitor the effects of cattle grazing management in Minnesota prairies. Prior to working for the DNR, he spent a year with The Nature Conservancy and completed a PhD thesis on the physiological ecology of several species of Phemeranthus.