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Ecosystems
๐ฟ
Food Chains & Ecosystems
๐UKยท1927
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๐ฟFood Chains & Ecosystems
How energy flows through ecosystems โ producers, consumers, decomposers and trophic levels
Key Facts
- 1Producers (plants) โ Primary consumers (herbivores) โ Secondary consumers โ Tertiary consumers โ Decomposers
- 210% energy rule: only 10% of energy transfers between each trophic level; explains why apex predators are rare
- 3Food web: complex network of interlinked food chains; removing one species can collapse the web (keystone species)
๐ก Only about 10% of energy transfers between trophic levels โ so a meat-heavy diet requires 10ร more land and water than a plant-based diet
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