Oklahoma Bison Reintroduction Restores Tallgrass Prairie, Boosts Soil Carbon and Biodiversity
en.as.comThe Joseph H. Williams Tallgrass Prairie Preserve in Oklahoma has seen a remarkable recovery since 300 bison were reintroduced in 1993. The herd, now numbering around 2,700 in summer, has helped restore native grasses, increase plant diversity to over 750 species, and improve the ecosystem's ability to capture carbon in the soil. Bison grazing patterns differ from cattle, favoring grasses over flowering plants, which supports insects and birds. Beyond biodiversity, bison contribute to wildfire management by consuming dry biomass and creating wallows that form small ponds. Controlled burns on a third of the preserve each year mimic historical Native American practices. These efforts highlight how large herbivore restoration can serve as a nature-based climate solution, enhancing carbon storage while rebuilding a critically endangered ecosystem.
