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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.
(Source: DCMP)
Biomagnification happens when toxins become more highly concentrated when moving up through trophic levels in the food chain. Uncontrolled use of DDT is used in this episode as an example. Learn why bioaccumulation can occur in high-level consumers. Part of "The Amoeba Sisters" series.
