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Flow of Matter and Energy. A food chain is a linear representation of who eats who in an ecosystem. Producers (plants, algae) Primary Consumer (herbivores)

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Presentation on theme: "Flow of Matter and Energy. A food chain is a linear representation of who eats who in an ecosystem. Producers (plants, algae) Primary Consumer (herbivores)"— Presentation transcript:

1 Flow of Matter and Energy

2 A food chain is a linear representation of who eats who in an ecosystem. Producers (plants, algae) Primary Consumer (herbivores) Secondary Consumer (carnivores or omnivores) Tertiary Consumer Quaternary Consumer

3 If you die before being incorporated into the food chain... Detritus Feeders Scavengers Decomposers Courtesy of freeimages.co.uk

4 Food Webs Food webs show the interactions between many food chains

5 Photosynthesis

6 Cell Respiration

7 Trophic Pyramid Quaternary Consumers 10 kcal Tertiary Consumers 100 kcal Secondary Consumers 1000 kcal Primary Consumers 10,000 kcal Producers 100,000 kcal

8 Trophic Pyramid As you move up a trophic pyramid Energy decreases Energy decreases Number of individuals decreases Number of individuals decreases Biomass decreases (# individuals times their weight) Biomass decreases (# individuals times their weight)

9 Trophic Pyramids and Feeding a Starving Nation Human Primary Consumers 10,000 kcal Producers 100,000 kcal Human Secondary Consumer 1000 kcal Cow Primary Consumer 10,000 kcal Producers 100,000 kcal

10 Bioaccumulation


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