Two of our favorite blog contributors came up with Kristin Marshall's Doctoral Thesis on the "bottom-up" impacts on the regeneration of Yellowstone's Northern Range.............In yesterdays Post, we reviewed Kristin's premise that Wolves do not have as dramatic a "top down" effect on the regeneration of Willow, Aspen and Cottonwoods compared to the bottom up impacts of climate, weather, etc..............read her full analysis and conclusions by clicking on the link below

click here to read Kristin Doctoral Thesis entitled: WOLVES, ELK AND WILLOWS:ALTERNATE STATES AND TRANSITION THRESHOLDS ON YELLOWSTONE'S NORTHERN RANGE

aspen grove in yellowstone