Classroom Resources

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Image from the film of Silliman inspecting grasses.

Trophic Cascades in Salt Marsh Ecosystems

In this video, ecologist Brian Silliman explains how he uses manipulative field experiments to study salt marsh ecosystems. His approach revealed that these systems are under top-down control from consumers and predators.

Ecology
Science Practices
Scientists at Work
High School — General
High School — AP/IB
College
Image from the film of Mary Power measuring the depth of a stream.

Riverine Food Webs: How Flow Rates Affect Biomass

This video follows ecologist Mary Power, who is studying the Eel River in Northern California to decipher the connection between river flows and biodiversity.

Ecology
Science Practices
Scientists at Work
High School — General
High School — AP/IB
College