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Showing 1-30 of 30 Resources
  • Ecology, Food Webs, and the Chesapeake Bay

    Ecology, Food Webs, and the Chesapeake Bay

    Science Talks

    (49 min 3 sec) A discussion of the Chesapeake Bay Watershed, its complex food web, and the challenges of conserving and restoring the bay.

  • Climate Stress and Coastal Food Webs

    Climate Stress and Coastal Food Webs

    Science Talks

    (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

    Science Talks

    (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

    Science Talks

    (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

    Science Talks

    (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

    Science Talks

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

  • 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.

  • The Science of Camera Traps

    The Science of Camera Traps

    Science Talks

    (23 min 44 sec) A discussion of camera traps and their use in ecological research.

  • 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.

  • Modeling Populations and Species Interactions

    Modeling Populations and Species Interactions

    Science Talks

    (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. 

  • 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.

  • Africa's Savanna Ecosystems

    Africa's Savanna Ecosystems

    Science Talks

    (24 min 56 sec) Savannas cover 20 percent of Earth’s surface and much of Africa. The patterns and processes that occur in this globally important biome illustrate core concepts in ecology.

  • 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.

  • Saving Biodiversity Discussion

    Saving Biodiversity Discussion

    Science Talks

    (57 min 28 sec) A sixty-minute discussion on biodiversity.

  • Dodging Extinction

    Dodging Extinction

    Science Talks

    (31 min 12 sec) What steps can be taken to avoid the sixth mass extinction?

  • Ocean Species Respond to Climate Change

    Ocean Species Respond to Climate Change

    Science Talks

    (29 min 39 sec) Coral reefs, how they are threatened by climate change, and how to protect them.

  • Extreme Life of the Sea

    Extreme Life of the Sea

    Science Talks

    (29 min 27 sec) The threat to biodiversity in the ocean differs from the threats on the land.

  • Rescuing Species

    Rescuing Species

    Science Talks

    (29 min 1 sec) How to preserve genetic diversity that is threatened by habitat loss.

  • Humans, Biodiversity, and Habitat Loss

    Humans, Biodiversity, and Habitat Loss

    Science Talks

    (33 min 4 sec) Human activities and their effects on biodiversity in the past, present, and future.

  • Learning from Past Extinctions

    Learning from Past Extinctions

    Science Talks

    (29 min 6 sec) There is still time to avoid a sixth mass extinction.

  • Biodiversity in the Age of Humans

    Biodiversity in the Age of Humans

    Science Talks

    Are we witnessing a sixth mass extinction? What factors threaten ecosystems on land and in the sea? What are researchers doing to try to conserve biodiversity and ecosystems?

  • Dog Genomics and Dogs as Model Organisms

    Dog Genomics and Dogs as Model Organisms

    Science Talks

    (28 min 54 sec) Dr. Elinor Karlsson discusses her work with dogs as a model organism for genomic studies.

  • Genomic Medicine, Autism, and Cancer

    Genomic Medicine, Autism, and Cancer

    Science Talks

    (37 min 26 sec) A student discussion with the lecturers of the 2013 Holiday Lectures on Science.

  • From Cancer Genomics to Cancer Drugs

    From Cancer Genomics to Cancer Drugs

    Science Talks

    (58 min 46 sec) Genetic data from a large number of tumor types reveal commonly mutated genes and uncover connections between different types of cancer.

  • Decoding the Autism Puzzle

    Decoding the Autism Puzzle

    Science Talks

    (58 min 5 sec) Over the past decade, the application of advanced DNA sequencing techniques has greatly increased our understanding of the genetic basis of autism.

  • Cancer As a Genetic Disease

    Cancer As a Genetic Disease

    Science Talks

    (58 min 33 sec) Understanding that cancer is caused by mutations in genes that regulate cell proliferation has led to the development of targeted drug therapies.

  • Sizing Up the Brain Gene By Gene

    Sizing Up the Brain Gene By Gene

    Science Talks

    (59 min 32 sec) Recent advances in DNA sequencing technology have led to a better understanding of the many genes that play a role in brain development.

  • Medicine in the Genomic Era

    Medicine in the Genomic Era

    Science Talks

    In the 2013 Holiday Lectures on Science, leading medical researchers explain how advances in genomics are revolutionizing their work, leading to a better understanding of disease and to improved treatments.

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