Native and Dryland Pasture Seed Mixes Impact Revegetation 12 Years after Pipeline Construction in Southern Alberta

Activities associated with agriculture, grazing, and the energy industry have altered large tracts of native rangeland in North America. Pipelining causes intense local disturbance by removal vegetation alterations to soil horizons. Following a disturbance, reclamation is required return land equivalent capability. Revegetation usually seeding and/or agronomic (non-native, dominant) species. This study investigated long-term effects dryland pasture (91% non-native species) seed mixes, right-of-way (RoW) treatments on revegetation southeastern Alberta. Native mixes were more successful at enhancing seeded cover than mixes. Grazing had significant impact only survival grasses. The mix did not significantly affect total, native, non-native, annual, or perennial forb cover. Total was higher trench all other RoW (storage, work). suggests that can result following pipeline construction.