Grasslands Food Web

Directions: Create a food web using the organisms described below. Indicate with different colors which are primary producers, primary consumers, secondary consumers, etc. You may chose to write the organism name in color or give each name a color border. Include a legend to explain what the colors represent. Use arrows to show energy flow.

Organism Description Trophic level
Sagebrush Aromatic shrub found in drier, colder areas. Primary producers
Buffalo grass Low-growing, sod-forming grass used by early settlers for sod houses. Primary producer
Blue grama grass Low grayish-green sod forming grass with curly leaves. Primary producers
Short-horned grasshopper Common family of grasshoppers. Herbivore
Plains spade-foot toad Two inch long toad with cat-like eyes (vertical pupils) and a small projection on the hind legs - a spade. Spades used to help dig burrows. Carnivore - Insects
Burrowing owl Sparrow-sized owl that shelters and nests in abandoned ground squirrel and prairie dog holes. Carnivore - rodents, insects and birds.
Horned larks Small brownish bird with bright yellow front. Males have elaborate courting flight and song. Omnivore - seeds and insects
Ferruginous hawk Our largest hawk, becoming more rare. Carnivore - mostly small mammals
Pronghorn Hoofed animal standing three feet at the shoulder. The fastest North American mammal. Herbivore - sagebrush and grasses
American bison Massive mammal weighing up to 2000 pounds Herbivore - grazes on grasses
Prairie dog Two to three pound member of the squirrel family. Lives in large colonies (towns). Omnivore - mostly grasses and forbs, but some insects.
Ferret Two pound member of the weasel family. Carnivore - other small animals.