Energy decreases per trophic level
The relative energy in trophic levels in a Silver Springs, Florida, ecosystem is shown. Each trophic level has less energy available and supports fewer organisms at the next level.
Source
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"OpenStax College, Ecology of Ecosystems. October 17, 2013."
http://cnx.org/content/m44885/latest/Figure_46_01_04.jpg
OpenStax CNX
CC BY 3.0.
