Transition in food web structure with increasing stream size in South Fork Eel River watershed.
Organisms in smallest streams are supported primarily by terrestrial
detritus. Algae support significant densities
of grazers in
small streams (>2km2).
Organisms in
larger tributaries (>10km2) are supported primarily by local
algae. South Fork Eel river exports
emerging aquatic
insects and beached algae to terrestrial consumers.