Energy Flow Through an Ecosystem copyright cmassengale

copyright cmassengale What is energy? copyright cmassengale

copyright cmassengale What is energy? - Energy is the ability to cause some kind of change. copyright cmassengale

copyright cmassengale Photosynthesis Changes light energy into chemical energy in the form of glucose. ENERGY is stored in glucose copyright cmassengale

copyright cmassengale Photosynthesis -Occurs in the chloroplasts of plants. -Chloroplasts contain chlorophyll. -Chlorophyll is the pigment that makes plants look green. copyright cmassengale

Chemical equation: Photosynthesis 6CO2 + 6H2O + sunlight C6H12O6 + 6O2 Carbon dioxide + water sunlight Glucose (sugar) + oxygen copyright cmassengale

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

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

copyright cmassengale CELLULAR RESPIRATION is when organisms use oxygen to break down food to get energy for cells. copyright cmassengale

Chemical equation : cellular respiration 6O2 + C6H12O6 -->  6H2O + 6CO2 + energy Oxygen + Glucose Carbon dioxide + water Energy (ATP) copyright cmassengale

copyright cmassengale Did you notice a pattern with the chemical equations and if you did, what was it? copyright cmassengale

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

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

copyright cmassengale ENERGY PYRAMID - a diagram that shows the energy flow in an ecosystem. Trophic levels - the different feeding levels of organisms copyright cmassengale

Which level do you think has the most energy? copyright cmassengale

Secondary Consumers= CARNIVORE Primary Consumers= HERBIVORES Tertiary Consumers Secondary Consumers= CARNIVORE Primary Consumers= HERBIVORES PRODUCERS Remember scavengers and decomposers can enter at any level!

Consumers that eat producers to get energy: Are first order (1st) or primary consumers Are herbivores (plant-eaters) copyright cmassengale

copyright cmassengale Most of the energy the primary consumer gets from the producer is used by the consumer. copyright cmassengale

Some of the energy moves into the atmosphere as heat. copyright cmassengale

copyright cmassengale 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

A Consumer that Eats Another Consumer for Energy: Is called a secondary or 2nd order consumer May be a carnivore or a omnivore May be a predator May be a scavenger copyright cmassengale

A consumer that eats a consumer that already ate a consumer: Is called a 3rd order or tertiary consumer May be a carnivore or a omnivore May be a predator May be a scavenger copyright cmassengale

Consumers that eat producers & other consumers Are called omnivores Omnivores eat plants and animals copyright cmassengale

copyright cmassengale Consumers that hunt & kill other consumers are called predators. The animals that are hunted & killed are called prey. copyright cmassengale

Consumers that eat other dead consumers are called scavengers copyright cmassengale

copyright cmassengale Energy Pyramids Show Amount of available energy decreases for higher 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 copyright cmassengale

copyright cmassengale Food chain – the flow of energy of one organism eating another organism *A single pathway* copyright cmassengale

Food Chains Show Available Energy copyright cmassengale

copyright cmassengale More Food Chains copyright cmassengale

Food webs –the pattern of overlapping food chains They show the feeding relationships in an ecosystem copyright cmassengale

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

How Many Chains are in this web? copyright cmassengale