🔬general biology i review

Grazing food web

Written by the Fiveable Content Team • Last updated August 2025
Written by the Fiveable Content Team • Last updated August 2025

Definition

A grazing food web is a network of interconnected food chains where primary producers (plants and algae) are consumed by herbivores, which in turn are consumed by carnivores. It focuses on the flow of energy and nutrients through direct consumption of living plant matter.

5 Must Know Facts For Your Next Test

  1. Primary producers in a grazing food web include plants, algae, and phytoplankton.
  2. Herbivores, such as deer or zooplankton, play a critical role in transferring energy from plants to higher trophic levels.
  3. Grazing food webs are contrasted with detrital food webs, where energy flows primarily through decomposers.
  4. Energy transfer efficiency between trophic levels in a grazing food web is typically around 10%.
  5. Grazing food webs can be affected by external factors like climate change and human activities such as agriculture.
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