1 Energy Flow Through an Ecosystem Producers, Consumers, Food Chains, Food Webs, Energy Pyramids copyright cmassengale

2 Begins with the SUNBegins with the SUN PhotosynthesisPhotosynthesis 6CO 2 + 6H 2 O + sunlight & chlorophyll  C6H 12 O 6 + 6O 2 copyright cmassengale

3 Organisms that can make glucose during photosynthesis are called Organisms that can make glucose during photosynthesis are called PRODUCERS. copyright cmassengale

4 Producers use most of the energy they make for themselves. copyright cmassengale

5 The energy that is not used by producers can be passed on to organisms that cannot make their own energy. copyright cmassengale

6 Organisms that cannot make their own energy are called CONSUMERS. copyright cmassengale

7 Consumers that eat producers to get energy: Are primary consumers Are herbivores (plant-eaters) copyright cmassengale

A Consumer that Eats Another Consumer for Energy: Is called a secondary consumer Is called a secondary consumer May be a carnivore or a omnivore May be a carnivore or a omnivore May be a predator May be a predator May be a scavenger May be a scavenger copyright cmassengale8

9 The transfer of energy from the sun to producer to primary consumer then to higher order consumers can be shown in a FOOD CHAIN. copyright cmassengale

10 Food Chains Show Available Energy copyright cmassengale

11 More Food Chains copyright cmassengale

12 Another way of showing the transfer of energy in an ecosystem is the ENERGY PYRAMID copyright cmassengale

13 Energy Pyramids Show Amount of available energy decreases for higher consumers Amount of available energy decreases for higher consumers Amount of available energy decreases down the food chain Amount of available energy decreases down the food chain It takes a large number of producers to support a small number of primary consumers It takes a large number of producers to support a small number of primary consumers It takes a large number of primary consumers to support a small number of secondary consumers It takes a large number of primary consumers to support a small number of secondary consumers copyright cmassengale

Energy Pyramid copyright cmassengale14 EnergydecreasesEnergydecreases

15 Food Webs: Are interconnected food chains Are interconnected food chains They show the feeding relationships in an ecosystem They show the feeding relationships in an ecosystem copyright cmassengale

16 How Many Chains are in this web? copyright cmassengale

17 Identify the Producers, Consumers, & Decomposers: Count the Food Chains! copyright cmassengale