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  • Trophic Cascades in Salt Marsh Ecosystems

    Trophic Cascades in Salt Marsh Ecosystems

    Scientists at Work

    (10 min 1 sec) Ecologist Brian Silliman uses manipulative field experiments to reveal that salt marsh ecosystems are under top down control from consumers and predators.

  • Riverine Food Webs – How Flow Rates Affect Biomass

    Riverine Food Webs – How Flow Rates Affect Biomass

    Scientists at Work

    (9 min 15 sec) Ecologist Mary Power studies the Eel River in Northern California to figure out the connection between river flows and biodiversity.

  • Snail Fronts and Salt Marsh Die-Offs

    Snail Fronts and Salt Marsh Die-Offs

    Data Points

    Researchers studied whether periwinkle snail fronts expand mudflats and contribute to salt marsh die-offs.

  • Tracking Global Changes in Forest Cover

    Tracking Global Changes in Forest Cover

    Data Points

    Researchers used satellite imagery analyze the amount of forest that was lost annually across the globe between 2000 and 2012.

  • Dead Zones in Coastal Ecosystems

    Dead Zones in Coastal Ecosystems

    Data Points

    Researchers overlaid the locations of more than 400 hypoxic systems linked to eutrophication on a map of the global “human footprint.”

  • Film Guide for Some Animals are More Equal than Others

    Film Guide for Some Animals are More Equal than Others

    Film Guides

    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.

  • Metabarcoding

    Metabarcoding

    Clips

    (3 min 38 sec) Dr. Rob Pringle introduces a new method of studying herbivore diets by extracting plant DNA from animal dung.

  • 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 Films

    (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.

  • Building Ecological Pyramids

    Building Ecological Pyramids

    Lessons

    In this activity, students will build biomass pyramids depicting trophic levels of various habitat types using data from trail cameras in Gorongosa National Park.

  • Student Discussion on Patterns and Processes in Ecology

    Student Discussion on Patterns and Processes in Ecology

    Science Talks

    (56 min 17 sec) The 2015 Holiday Lecture discussion session.

  • A Science-Based Approach to Restoring Gorongosa's Wildlife

    A Science-Based Approach to Restoring Gorongosa's Wildlife

    Scientists at Work

    (7 min 45 sec) Scientists from Gorongosa National Park relocate zebras from a nearby reserve as part of the effort to restore healthy wildlife populations.

  • Surveying Ant Diversity in Gorongosa National Park

    Surveying Ant Diversity in Gorongosa National Park

    Scientists at Work

    (7 min 46 sec) Conservation biologist Leeanne Alonso is surveying ant species Gorongosa National Park to monitor the health of the park’s ecosystems

  • Resistance to Coral Bleaching

    Resistance to Coral Bleaching

    Data Points

    To test whether corals can become more resistant to bleaching, Dr. Steve Palumbi and colleagues performed a series of experiments in the U.S. National Park of American Samoa off of Ofu Island. Worksheets also available in Spanish.

  • Niche Partitioning and Species Coexistence

    Niche Partitioning and Species Coexistence

    Scientists at Work

    (8 min 14 sec) Professor Robert Pringle describes the cutting-edge method of DNA metabarcoding used to reveal how similar animals share resources. Film and worksheet also available in Spanish.

  • Analyzing Patterns in the Savanna Landscape

    Analyzing Patterns in the Savanna Landscape

    Scientists at Work

    (7 min 57 sec) Mathematician-turned biologist Dr. Corina Tarnita describes the importance of termite mounds in a savanna ecosystem. Also available in Spanish.

  • Conserving and Restoring Ecosystems

    Conserving and Restoring Ecosystems

    Science Talks

    (25 min 21 sec) Two important questions in ecology are "How do we conserve ecosystems?" and  "When we try to restore damaged ecosystems, what state do we restore them to?"

  • Communities as Ecological Networks

    Communities as Ecological Networks

    Science Talks

    (41 min 18 sec) Ecosystems include complex interactions between animals and plants, which can be measured experimentally and investigated using mathematical models.

  • How Species Coexist

    How Species Coexist

    Science Talks

    (27 min 25 sec) Large herbivores in the African savanna coexist by partitioning ecological niches by time, space, and diet.

  • Patterns in Nature

    Patterns in Nature

    Science Talks

    (35 min 51 sec) Regular spatial patterns abound in natural systems. Understanding how patterns arise in ecosystems provides insights into how these ecosystems function.

  • Patterns and Processes in Ecology

    Patterns and Processes in Ecology

    Science Talks

    What controls the numbers and distributions of animals in their environment? How do animals interact with other species? How do natural patterns arise in nature? Find out in the 2015 Holiday Lectures on Science.

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