What we-eat-makes-a-difference-cb1283618123
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Transcript of What we-eat-makes-a-difference-cb1283618123
TOP PREDATORS INTERMEDIATE PREDATORS
FIRST-ORDER CONSUMERS
PRIMARY PRODUCERS
10 pounds of level 3 fish
or100 pounds of level 2 fish
or 1,000 pounds of level 1 organisms
When you eat
1 poundof a level 4 fish, it’s like eating ...
But if you consume
1 poundof level 3 fish,it’s like eating ...
or 100 poundsof level 1 organisms
10 poundsof level 2 fish
LEVEL LEVEL LEVELLEVEL
4 3 2 1
What We Eat Makes a Difference
A top predator requires exponentially more energy to survive than does a fish at a lower level of the food chain. When wealthy nations catch or buy top predators, they increase their impact on the ocean compared to poor nations, which tend to eat smaller fish.
Mariel Furlong, NGM Staff, and Alejandro TumasSource: Sea Around Us Project, University of British Columbia Fisheries Centre