Food Webs and Energy Transfer

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Food Webs and Energy Transfer Carnivores as tertiary Tertiary Consumers consumers eat other animals (Carnivores) that eat animals. Ex: weasels, Owls, bobcats and eagles Carnivores are animals that eat other animals, as secondary consumers they are animals that primarily eat Secondary Consumers herbivores. Omnivores are species that eat other animals and plants. Ex: (Carnivores & Omnivores) Bear, bobcat, and humans Herbivores, animals that only Primary consumers eat plants. Ex: (Herbivores) Snowshoe hare, deer, and slugs. Plants turn sunlight into food through Producers photosynthesis. Ex: (Plants, in a process known as photosynthesis convert Skunk cabbage and red maple light energy into starches, i.e. food) Decomposers are microorganisms Decomposers such as fungi, bacteria, and (Decomposers, feed on dead plant and animal material in the decay actinomycetes. process that returns the nutrients back to the soil for plant use. Owls eat foxes. Foxes eat snakes. Snakes eat frogs. Frogs eat insects. Energy Transfer & Cycling Animals & plants die Through a Food Chain Plants produce food Insects eat plants. Plants use returning nutrients as energy to Decomposers breakdown grow dead plant/animal matter in the decay process, and return nutrients to the soil. Potential Food Chains at Orono Bog •Nectar and pollen > flies > northern leopard frog > garter snake > owl •Dead plant or animal material > Fungi > slugs > frogs > weasel > coyote •Bird eggs > red squirrel > red fox > bobcat •Plants > snowshoe hare > bobcat •Dead plant or animal material > ant > spider > frog > snake > owl Real Food Webs are very complex, and food chains are merely simplified interactions of energy transfer. For example: a coyote may eat a weasel, but a coyote may also eat berries, bird eggs, dead animals, mice, insects, snakes, grass…etc. Food Web Owl Coyote Red fox Weasel Bobcat Frog Red squirrel Spider Garter snake Snowshoe hare Fly Ant Slug Fungi Plants Bird eggs Nectar & Pollen Dead plant & animal material.

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