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Decline in trophic level of fisheries catch since 1950

A trophic level of an organism is its position in a food chain. Levels are numbered according to how far particular organisms are along the chain from the primary producers, to herbivores, to predators, to carnivores or top carnivores.

Year: 2007

From collection: Millennium Ecosystem Assessment

Cartographer: Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal

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