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 transcript:

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) Secondary Consumer (carnivores or omnivores) Tertiary Consumer Quaternary Consumer

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

Food Webs Food webs show the interactions between many food chains

Photosynthesis

Cell Respiration

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

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)

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

Bioaccumulation

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