Organisms in a food web

Shredders - feed on organic matter by shredding, chewing then digesting. Examples: stonefly, crane fly, caddisfly
	Grazers - (scraper) - feed on algae on rocks/hug the bottom Examples: caddisfly, mayflies
Gatherers - roam the stream collecting deposits from rocks Example: Mayflies
	Filter collectors - use a "net" to catch small animals/invertebrates coming downstream Example: caddisfly

Jennifer demonstrates an actual food web

Role of organisms

Producers - Carry out photosynthesis and make food
Consumer - Feed on other organisms for energy Herbivores - Specific consumer that eats only plants Example: alewife, water penny, aquatic worm Carnivores - Specific consumer that eats only other animals Example: smallmouth bass, bluegill, sculpin, hellgramite Omnivore - Specific consumer that eats both plants and other animals Example: cranefly, dragonfly, mayfly, shiner
Dietriatovores - eat organic matter Example: crayfish
Parasites - one benefits, one does not Example: leech
Decomposers: Feed on nonliving organic material Example: bacteria, fungi

Students listed the organisms of the clinch river...

...and tried to determine how these organisms interconnect...

(A student from Tazewell County debates where to put his organism in the food web.)

When food chains interconnect they become a food web!

Food Webs in the Clinch River at Cedar Bluff drawn by students at Tazewell Middle School

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