The Rocky Mountain ecosystem supports a complex food web. Here's a simplified trophic structure:
Grasses, shrubs, trees (conifers, aspens), forbs (wildflowers).
Insects (grasshoppers, beetles, caterpillars), small mammals (squirrels, chipmunks, marmots, pikas), ungulates (deer, elk, bighorn sheep, mountain goats).
Birds of prey (hawks, eagles, falcons, owls), mesocarnivores (coyotes, foxes, bobcats), black bears (omnivorous).
Mountain lions (cougars), grizzly bears, wolves (where reintroduced). These top predators regulate ecosystem health.
Decomposers (fungi, bacteria) recycle nutrients at all levels. Energy flows from sun → producers → herbivores → carnivores, with ~10% transfer efficiency per level.