Creating small clearings helps herbivores keep trees from taking over savannas

In many parts of the world, grasslands and savannas are being taken over by trees. This change reduces biodiversity and alters how these ecosystems work. We wanted to test a simple, low-cost way to slow this process and help restore open grassy areas. In our study, we created small clearings (“glades”) by cutting trees in a heavily wooded savanna in South Africa. We compared these … Continue reading Creating small clearings helps herbivores keep trees from taking over savannas

Strategies for global rangeland stewardship: the equilibrium-non-equilibrium debate

The rangeland equilibrium-non-equilibrium debate produced several important advances in our understanding of rangeland systems. But, in their recent Review, Briske et al. ask if, collectively, these advances are still insufficient to inform the stewardship strategies necessary to sustain global rangelands? Here they provide a summary of their work. The rangeland equilibrium-non-equilibrium debate of the late 20th Century questioned the appropriate ecological model governing the function … Continue reading Strategies for global rangeland stewardship: the equilibrium-non-equilibrium debate