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Activity for Some Animals are More Equal than Others

This activity explores the content and research discussed in the film Some Animals are More Equal than Others, which tells the story of the ecologists who first documented the role of keystone species in ecosystem regulation.

Analyzing Patterns in the Savanna Landscape

This video showcases the work of mathematician-turned-biologist Dr. Corina Tarnita, who uses quantitative approaches to understand the role of termite mounds in the savanna ecosystem.

Modeling Trophic Cascades

In this activity, students model trophic cascades, which are also explored in a variety of related resources, using cards of animal and plant species from seven different habitats.

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.

Trophic Cascades in Rivers

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

Untangling Salt Marsh Food Webs

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

Floods, Droughts, and Food Chains

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

Ecology, Food Webs, and the Chesapeake Bay

In this talk, scientists Beth McGee, Mary Power, and Brian Silliman discuss the Chesapeake Bay, its food web, and the challenges of conserving and restoring the Bay.