1 Energy Flow Through an Ecosystem 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
3Photosynthesis Chemical reaction where green plants use water & carbon dioxide to store the sun’s energy in glucose Chemical reaction where green plants use water & carbon dioxide to store the sun’s energy in glucose ENERGY is stored in glucose ENERGY is stored in glucose Glucose is stored as starch in plants Glucose is stored as starch in plants copyright cmassengale
4 Organisms that can make glucose during photosynthesis are called Organisms that can make glucose during photosynthesis are called PRODUCERS. copyright cmassengale
5 Producers use most of the energy they make for themselves. copyright cmassengale
6 Producers use cellular respiration to supply the energy they need to live. copyright cmassengale
7 CELLULAR RESPIRATION is the chemical reaction that releases the energy in glucose. 6O 2 + C 6 H 12 O 6 --> 6H 2 O + 6CO 2 + energy copyright cmassengale
8 The energy that is not used by producers can be passed on to organisms that cannot make their own energy. copyright cmassengale
9 Organisms that cannot make their own energy are called CONSUMERS. copyright cmassengale
10 Consumers that eat producers to get energy: Are first order (1 st ) or primary consumers Are herbivores (plant- eaters) copyright cmassengale
11 Most of the energy the primary consumer gets from the producer is used by the consumer. copyright cmassengale
12 Some of the energy moves into the atmosphere as heat. copyright cmassengale
13 Some energy in the primary consumer is STORED & not lost to the atmosphere or used by the consumer itself. This energy is available for another consumer (predator). copyright cmassengale
14 A Consumer that Eats Another Consumer for Energy: Is called a secondary or 2nd order consumer Is called a secondary or 2nd order 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 cmassengale
15 Most of the energy the secondary consumer gets from the primary consumer is used by the secondary consumer. copyright cmassengale
16 Some of the energy is lost as heat, but some energy is stored and can passed on to another consumer. copyright cmassengale
17 A consumer that eats a consumer that already ate a consumer: Is called a 3rd order or tertiary consumer Is called a 3rd order or tertiary 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 cmassengale
18 Consumers that eat producers & other consumers Are called omnivores Omnivores eat plants and animals copyright cmassengale
19 Consumers that hunt & kill other consumers are called predators. The animals that are hunted & killed are called prey. copyright cmassengale
20 Consumers that eat other dead consumers are called scavengers copyright cmassengale
21 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
22 Food Chains Show Available Energy copyright cmassengale
23 More Food Chains copyright cmassengale
24 Another way of showing the transfer of energy in an ecosystem is the ENERGY PYRAMID copyright cmassengale
25 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
26copyright cmassengale
27 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
28 How Many Chains are in this web? copyright cmassengale
29 Identify the Producers, Consumers, & Decomposers: Count the Food Chains! copyright cmassengale
30copyright cmassengale