Using this graphic and referring to it is encouraged, and please use it in presentations, web pages, newspapers, blogs and reports.
For any form of publication, please include the link to this page and give the cartographer/designer credit (in this case Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal)
Millennium Ecosystem Assessment
Uploaded on Tuesday 21 Feb 2012
Decline in trophic level of fisheries catch since 1950
Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
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.