A sediment core suggests that the large ecosystem changes that occurred in southeastern Australia were caused by the extinction of large grazers, not human-controlled fire use, which caused fire-prone forest vegetation to overtake the grassy landscape. Kari St.LaurentI received a Ph.D. in oceanography in 2014 from the Graduate School of Oceanography (URI) and am finishing […]
Sediment records show that wildfires caused the initial expansion of grasslands in Africa during the Miocene (8 million years ago) allowing the African Savanna to evolve into the spectacular ecosystem we know today. Kari St.LaurentI received a Ph.D. in oceanography in 2014 from the Graduate School of Oceanography (URI) and am finishing up a post-doc […]