Food-web structure can reveal indirect dependencies. A change in a producer may affect herbivores and then their consumers, but alternative resources can modify the result. Arrow direction must be stated because diagrams use different conventions. Here it follows the transfer from eaten material towards its consumer, rather than pointing like an animal's gaze or hunting direction.
Plants, animals and ecosystems · Discover & try
Why is a food web more than one chain?
Reading level 4 of 5 · FluentChange
Word help
producer
An organism that forms organic material using an energy source.
consumer
An organism that obtains material and energy by consuming other material.
Watch · Try · Explain
See how it works
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Selected illustrative feeding links, not complete local diets, equal energy flows or population predictions.
What to look for
- Arrows point from food to eater
- One organism can have several links
- Indirect effects can have alternatives
Explain what you noticed
A new web shows grass → grasshopper → frog. What does the arrow from grasshopper to frog mean here?
Keep this idea: Read the arrow convention and follow more than one feeding route.
Follow the sources
- Smithsonian Environmental Research Center — Terrestrial Food Webs
- Smithsonian Learning Lab — Interdependent Relationships in Ecosystems
Source material checked 2026-10-28. Explanations and activities by Nepedia. Source links do not imply endorsement.
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