Some Animals Are More Equal Than Others: Keystone Species And Trophic Cascades
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Browse Full-length Non-member Titles![Large fish with a spotted upper body and white underbelly swimming open-mouthed into a school of smaller fish. Caption: Each community is populated by different species.](https://org-dcmp-staticassets.s3.us-east-1.amazonaws.com/posterimages/9609_1.jpg)
What determines how many species live in a given place? Or how many individuals of the species can live somewhere? The research that provided answers to these questions was set in motion by the key experiments of ecologists Robert Paine and James Estes. Their research demonstrates just how fundamental keystone species and trophic cascades are in understanding ecology.
Media Details
Runtime: 19 minutes 27 seconds
- Topic: Science
- Subtopic: Biology, Ecology, Science Experiments, Science Methods
- Grade/Interest Level: 9 - 12
- Standards:
- Release Year: 2016
- Producer/Distributor: Howard Hughes Medical Institute
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