Born in food web ecology, the concept of trophic levels—the hierarchy of who eats who in the natural world—is an elegant way to understand how biomass and energy move through a natural system. It’s only natural that the idea found its way into the realm of aquaculture, where marine and freshwater farmers try to maximize their product with efficient inputs.
Click here for original story, Trophic levels are an ‘insufficient’ measure of sustainability for today’s aquaculture policy
Source: Phys.org