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Showing 1-17 of 17 Resources
  • Serengeti Wildebeest Population Regulation

    Serengeti Wildebeest Population Regulation

    Data Point

    In Serengeti National Park, Tanzania, scientists investigated how the eradication of rinderpest disease led to the wildebeest population boom.

  • Predator-Prey Relationship Dynamics

    Predator-Prey Relationship Dynamics

    Data Point

    In a study in Greenland, scientists examined whether changes in population densities of Arctic fox are related to changes in population densities of its main prey, the lemming.

  • Climate Stress and Coastal Food Webs

    Climate Stress and Coastal Food Webs

    Lecture

    (43 min 18 sec) We are in the midst of a major die-off of coastal wetlands – what is to blame?

  • Floods, Droughts, and Food Chains

    Floods, Droughts, and Food Chains

    Lecture

    (44 min 27 sec) How a river's community of herbivores and predators is affected by changes in river flow.

  • Untangling Salt Marsh Food Webs

    Untangling Salt Marsh Food Webs

    Lecture

    (45 min 16 sec) The revelation that salt marshes are controlled by top-down forces of herbivores and other consumers.

  • Trophic Cascades in Rivers

    Trophic Cascades in Rivers

    Lecture

    (44 min 27 sec) How fishes in a river ecosystem play a critical role in forming the aquascape.

  • Ecology of Rivers and Coasts—Food Webs and Human Impacts

    Ecology of Rivers and Coasts—Food Webs and Human Impacts

    Lecture

    Two leading ecologists describe the complex interactions between species and their environment in aquatic ecosystems. 

  • Exploring Trophic Cascades

    Exploring Trophic Cascades

    Click & Learn

    This interactive explores examples of what can happen when there are changes in the population size of one species in an ecosystem. How are species at other trophic levels affected? How does the ecosystem change?

  • Discovering Keystone Species

    Discovering Keystone Species

    Poster

    This classroom poster illustrates Robert Paine’s pioneering experiment that demonstrated the importance of top-down regulation of ecological communities by predators and led to his coining of the term keystone species.

  • Film Guide for Some Animals are More Equal than Others

    Film Guide for Some Animals are More Equal than Others

    Film Guide

    The following classroom-ready resources complement the film Some Animals Are More Equal Than Others: Trophic Cascades and Keystone Species. It tells the story of the bold experiments by Robert Paine and James Estes, which established the importance of keystone species in regulating ecological communities and the cascades of effects set in motion by their removal.

  • The Great Elephant Census

    The Great Elephant Census

    Scientists at Work

    (8 min 23 sec) How many African elephants are left and where are they? This video follows the work of researchers conducting the first census of African savanna elephants in over 40 years and the methods they are using to obtain accurate, up-to-date numbers across the continent. 

  • Niche Partitioning Activity

    Niche Partitioning Activity

    Activity

    Students are introduced to real-world examples of niche partitioning and cutting-edge technology used to give unprecedented insights into the feeding habits of wild animals.

  • WildCam Lab

    WildCam Lab

    Click & Learn

    The WildCam Lab is a part of WildCam Gorongosa, an online citizen science platform where users identify animals in trail camera photos. Using the WildCam Lab, students can investigate ecological questions and test hypotheses by exploring trail camera data using an interactive map. 

  • Some Animals Are More Equal than Others: Keystone Species and Trophic Cascades

    Some Animals Are More Equal than Others: Keystone Species and Trophic Cascades

    Short Film

    (19 min 29 sec) Keystone species and trophic cascades are fundamental concepts in ecology. This short film tells the story of how these concepts were first established through the pioneering experiments of two young researchers: Robert Paine and James Estes.

  • Modeling Populations and Species Interactions

    Modeling Populations and Species Interactions

    Lecture

    (30 min 38 sec) Gorongosa National Park in Mozambique provides several examples for how to model the growth of animal populations and then check the models against actual data. 

  • WildCam Gorongosa

    WildCam Gorongosa

    Click & Learn

    Researchers in Gorongosa National Park use remote trail cameras to study the park’s wildlife. You can contribute to this important research through WildCam Gorongosa, an online citizen science platform.

  • Liz Hadly Tracks the Impact of Climate Change in Yellowstone

    Liz Hadly Tracks the Impact of Climate Change in Yellowstone

    Scientists at Work

    (7 min 28 sec) Ecosystems in the world-famous national park are threatened by warming temperatures.

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