Climate Change and Grazing Alter Invasive and Native Perennial Grass Stem Recruitment
The robust vegetative reproductive capacity of smooth brome under a range of environmental conditions is a key mechanism enabling the expansion of this invasive grass species into western wheatgrass-dominated mixed-grass prairie in North America. Mixed-grass prairie dominated by western wheatgrass experiencing repeated defoliation may require longer recovery times and be more susceptible to smooth brome invasion due to the negative impact of grazing on western wheatgrass bud outgrowth. Seedling recruitment of perennial grasses is rare as most tillers (grass stems) are recruited from vegetative belowground buds. Successful tiller recruitment and establishment of native perennial grasses via the bud bank will be necessary for mixed-grass prairie to be resilient to climate change, plant invasions and grazing.
|Greater bud outgrowth of Bromus inermis than Pascopyrum smithii under multiple environmental conditions||(publication)|
Forest Service Partners