Ecosystem Quick Notes
1. Structure of Ecosystem
Biotic components: Living organisms (plants, animals, microbes)
Abiotic components: Non-living (light, water, soil, temperature)
2. Components
Producers: Green plants (make food by photosynthesis)
Consumers: Animals (depend on others for food)
Primary (herbivores)
Secondary/Tertiary (carnivores)
Decomposers: Bacteria & fungi (break down dead matter)
3. Food Chain & Food Web
Food chain: Linear transfer of energy
Grass Deer Tiger
Food web: Interconnected food chains (more stable)
4. Ecological Pyramids
Show number, biomass, or energy at each trophic level
Types:
Pyramid of number
Pyramid of biomass
Pyramid of energy (always upright)Ecosystem Quick Notes
1. Structure of Ecosystem
Biotic components: Living organisms (plants, animals, microbes)
Abiotic components: Non-living (light, water, soil, temperature)
2. Components
Producers: Green plants (make food by photosynthesis)
Consumers: Animals (depend on others for food)
Primary (herbivores)
Secondary/Tertiary (carnivores)
Decomposers: Bacteria & fungi (break down dead matter)
3. Food Chain & Food Web
Food chain: Linear transfer of energy
Grass Deer Tiger
Food web: Interconnected food chains (more stable)
4. Ecological Pyramids
Show number, biomass, or energy at each trophic level
Types:
Pyramid of number
Pyramid of biomass
Pyramid of energy (always upright)
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