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Energy Flow Through an Ecosystem. Food Chains, Food Webs, Energy Pyramids. Begins with the SUN Photosynthesis. 6CO 2 + 6H 2 O + sunlight & chlorophyll  C6H 12 O 6 + 6O 2. The chemical reaction by which green plants use water and carbon dioxide and light from the sun to make glucose.

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Energy Flow Through an Ecosystem

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Energy flow through an ecosystem
Energy Flow Through an Ecosystem

Food Chains, Food Webs, Energy Pyramids


Energy flow through an ecosystem

6CO2 + 6H2O + sunlight & chlorophyll C6H12O6 + 6O2


Energy flow through an ecosystem



An organism is
An organism is ….. called

  • Any independent living thing

  • Can be as small as a single celled bacteria

  • Or as large as a whale!


Producers are
Producers Are- called

  • Producers get their food and energy from the sun. (PLANTS)

  • They are AUTOTROPHS

  • They make their food through a process called photosynthesis.




Cellular respiration is the chemical reaction that releases the energy in glucose

6O need to live.2 + C6H12O6 -->  6H2O + 6CO2 + energy

CELLULAR RESPIRATION is the chemical reaction that releases the energy in glucose.


Energy flow through an ecosystem
The energy that is not used by producers can be passed on to organisms that cannot make their own energy.


Organisms that cannot make their own energy are called consumers they are heterotrophs
Organisms that cannot make their own energy are called organisms that cannot make their own energy.CONSUMERS. They are HETEROTROPHS


Consumers
Consumers organisms that cannot make their own energy.

  • Consumers need to eat their food to get energy. (ANIMALS)


Types of consumers are
Types of consumers are organisms that cannot make their own energy.

  • There are THREE types of Consumers

    • Herbivores

    • Carnivores

    • Omnivores.

  • Its still all about what you eat!


Herbivores eat only plants
Herbivores eat only plants. organisms that cannot make their own energy.


Carnivores only eat meat other animals
Carnivores only eat meat (other animals) organisms that cannot make their own energy.


Omnivores eat both meat animals and plants
Omnivores eat both meat (animals) and plants. organisms that cannot make their own energy.


Energy flow through an ecosystem
Stop…Review…Check… organisms that cannot make their own energy.Turn to your partner and tell them the meaning of each word. Also give two examples of each.

  • Carnivore:

  • Herbivore:

  • Omnivore:


Consumers that eat producers to get energy
Consumers that eat producers to get energy: organisms that cannot make their own energy.

  • Are first order or primary consumers

  • Are herbivores (plant-eaters)




Energy flow through an ecosystem

Some energy in the primary consumer is not lost to the atmosphere or used by the consumer itself.This energy is available for another consumer.


A consumer that eats another consumer for energy
A consumer that eats another consumer for energy: atmosphere or used by the consumer itself.

  • Is called a secondary or second order consumer

  • May be a carnivore or a herbivore

  • May be a predator

  • May be a scavenger


Energy flow through an ecosystem
Most of the energy the secondary consumer gets from the primary consumer is used by the secondary consumer.


Some of the energy is lost as heat but some energy is stored and can passed on to another consumer
Some of the energy is lost as heat, but some energy is stored and can passed on to another consumer.


A consumer that eats a consumer that already ate a consumer
A consumer that eats a consumer that already ate a consumer: stored and can passed on to another consumer.

  • Is called a third order or tertiary consumer

  • May be a carnivore or a herbivore

  • May be a omnivore

  • May be a predator

  • May be a scavenger


Energy flow through an ecosystem
Consumers that hunt & kill other consumers are called predators.The animals that are hunted & killed are called prey.


Consumers that eat producers other consumers
Consumers that eat producers & other consumers predators.

  • Are called omnivores

  • Omnivores eat plants and animals



Decomposers
Decomposers are called

  • Decomposers eat dead things and turn them back into dirt, or soil. YUK!

  • Examples:

    • Mushrooms

    • Worms

    • Bugs



Energy flow through an ecosystem
The transfer of energy from sun to producer to primary consumer to secondary consumer to tertiary consumer can be shown in a FOOD CHAIN.


How they relate
How they relate consumer to secondary consumer to tertiary consumer can be shown in a

.


Energy flow through an ecosystem
Stop…Review…Check… consumer to secondary consumer to tertiary consumer can be shown in a Turn to your partner and tell them the meaning of each word. Also give two example of each.

  • Producers:

  • Consumers:

  • Decomposers:


Energy flow through an ecosystem

Bear consumer to secondary consumer to tertiary consumer can be shown in a

Shark

Rabbit

Cherry tree

Mushroom

Human

Tulip (flower)

8. Panther

9. Giraffe

10. Worm

On a sheet of note book paper describe the following animals as either a producer, consumer or decomposer. For the consumers, make sure to include if they are a carnivore, herbivore or omnivore. Please use complete sentences! (Ex: A _____ is a ______.)


Answer key

Consumer / Omnivore consumer to secondary consumer to tertiary consumer can be shown in a

Consumer / Carnivore

Consumer / Herbivore

Producer

Decomposer

Consumer / Omnivore

Producer

Consumer / Carnivore

Consumer / Herbivore

Decomposer

Answer Key



Energy pyramids show
Energy pyramids show ecosystem is the

  • That the 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 primary consumers to support a small number of secondary consumers


Food webs
Food Webs: ecosystem is the

  • Are interconnected food chains

  • They show the feeding relationships in an ecosystem

  • EXAMPLE


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