In this talk, ecologist Mary Power discusses how herbivorous fish and their predators contribute to the regulation of aquatic ecosystems.

In this talk, ecologist Brian Silliman discusses the discovery that salt marshes are controlled by the top-down forces of consumers.

In this talk, ecologist Mary Power discusses how a river's community of herbivores and predators is affected by changes in river flow.

In this talk, ecologist Brian Silliman discusses the factors behind major die-offs of coastal wetlands.

In this talk, ecologist Robert Pringle discusses how large herbivores can coexist by partitioning ecological niches by time, space, and diet.

In this talk, biologists Robert Pringle and Corina Tarnita discuss how certain connections in ecosystems can be measured experimentally and investigated using mathematical models.

In this talk, ecologist Robert Pringle discusses two important questions in ecology: “How do we conserve ecosystems?” and “To what state should we try to restore damaged ecosystems?”

In this talk, biologists Alexandra Swanson and Roland Kays discuss camera traps and their use in ecological research.

In this talk, biologist Anthony Barnosky discusses Earth’s five mass extinctions and whether current species declines may be part of a sixth mass extinction.

In this talk, biologist Elizabeth Hadly discusses how to preserve genetic diversity that is threatened by habitat loss.

In this talk, biologist Anthony Barnosky discusses what steps can be taken to avoid a sixth mass extinction.

In this discussion session, biologists Stephen Palumbi, Anthony Barnosky, and Elizabeth Hadly answer questions from students.