
Primary Production is food for the animals in the Bay.

- Microscopic algae are food for microscopic animal plankton.
- Animal plankton are food for small fish and animals (clams, worms,
crabs).
- Small fish and animals are eaten by larger and larger fish, by birds,
or by humans.
Return to "Why
Is It Important?"
The URL of this page is http://sfbay.wr.usgs.gov/access/ColeCloern/FoodPyrmd.html
Pages created and maintained by Laura Zink Torresan
Last modified: 2 April 1997