Ecosystem Energy Flow11111111111111111111.ppt

Ecosystem Energy Flow

1. 1
Energy Flow
Through an
Ecosystem
Food Chains, Food Webs, Food Chains, Food Webs,
Energy PyramidsEnergy Pyramids
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2. 2
•Begins with the Begins with the
SUNSUN
•PhotosynthesisPhotosynthesis
6CO
2
+ 6H
2
O + sunlight & chlorophyll
C6H
12O
6 + 6O
2
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3. 3
PhotosynthesisPhotosynthesis
•
Chemical reaction where green plants Chemical reaction where green plants
use use water & carbon dioxidewater & carbon dioxide to store the to store the
sun’s energy in glucosesun’s energy in glucose
•
ENERGY is stored in glucoseENERGY is stored in glucose
•
Glucose is stored as starch in plantsGlucose is stored as starch in plants
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4. 4
Organisms that can Organisms that can
make glucose during make glucose during
photosynthesis are photosynthesis are
calledcalled PRODUCERS.
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5. 5
Producers Producers use use
most of the most of the
energy they makeenergy they make
for themselves.for themselves.
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6. 6
Producers use Producers use
cellular respirationcellular respiration
to supply the to supply the
energy they need energy they need
to live.to live.
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7. 7
CELLULAR CELLULAR
RESPIRATION RESPIRATION is is
the chemical the chemical
reaction that reaction that
releases the releases the
energy in glucoseenergy in glucose..
6O
2 + C
6H
12O
6 -->
 6H
2O + 6CO
2 + energy
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8. 8
The The energy that is not energy that is not
used by producersused by producers can can
be passed on to be passed on to
organisms that cannot organisms that cannot
make their own make their own
energy.energy.
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9. 9
Organisms that Organisms that
cannot make their cannot make their
own energy are called own energy are called
CONSUMERS.CONSUMERS.
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10. 10
Consumers that eat producersConsumers that eat producers
to get energy:to get energy:
•
Are first order (1
st
) or
primary consumers
•
Are herbivores (plant-eaters)
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11. 11
MostMost of the of the
energy the energy the
primary consumer primary consumer
gets from the gets from the
producer is used producer is used
by the consumer.by the consumer.
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12. 12
SomeSome of the of the
energy moves into energy moves into
the atmosphere as the atmosphere as
heat.heat.
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13. 13
Some energy in the Some energy in the
primary consumer is primary consumer is
STOREDSTORED && not lost not lost
to the atmosphere or to the atmosphere or
used by the used by the
consumer itself.consumer itself.
This energy is This energy is
availableavailable for another for another
consumer consumer (predator).(predator).
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14. 14
A Consumer that Eats Another A Consumer that Eats Another
Consumer for Energy:Consumer for Energy:
•
Is called a secondary or Is called a secondary or
2nd order consumer2nd order consumer
•
May be a May be a carnivorecarnivore or or
a a omnivoreomnivore
•
May be a May be a predatorpredator
•
May be a May be a scavengerscavenger
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15. 15
MostMost of the of the
energy the energy the
secondary secondary
consumer gets consumer gets
from the primary from the primary
consumer is used consumer is used
by the secondary by the secondary
consumer.consumer.
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16. 16
SomeSome of the of the
energy is lost as energy is lost as
heatheat, but some , but some
energy is stored energy is stored
and can and can passed passed
on to another on to another
consumer.consumer.
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17. 17
A consumer that eats a A consumer that eats a
consumer that already ate a consumer that already ate a
consumer:consumer:
•
Is called a Is called a 3rd order3rd order or or
tertiary consumertertiary consumer
•
May be a May be a carnivore or carnivore or
a omnivorea omnivore
•
May be a May be a predatorpredator
•
May be a May be a scavengerscavenger
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18. 18
Consumers that eat producers Consumers that eat producers
& other consumers& other consumers
Are called Are called
omnivoresomnivores
Omnivores Omnivores
eat plants eat plants
and and
animalsanimals
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19. 19
Consumers that hunt & Consumers that hunt &
kill other consumers are kill other consumers are
called called predators.predators.
The animals that are The animals that are
hunted & killed are hunted & killed are
called called prey.prey.
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20. 20
Consumers that eat Consumers that eat
other dead consumers other dead consumers
are called are called scavengersscavengers
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21. 21
The The transfer of energytransfer of energy from from
the the sunsun to to producerproducer to primary to primary
consumer then to higher order consumer then to higher order
consumersconsumers can be shown in a can be shown in a
FOOD CHAIN.FOOD CHAIN.
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22. 22
Food Chains Show Available EnergyFood Chains Show Available Energy
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23. 23
More Food ChainsMore Food Chains
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24. 24
Another way Another way
of showing the of showing the
transfer of transfer of
energy in an energy in an
ecosystem is ecosystem is
thethe
ENERGY ENERGY
PYRAMIDPYRAMID
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25. 25
Energy Pyramids ShowEnergy Pyramids Show
•
Amount of available Amount of available
energy energy decreasesdecreases for for
higher consumershigher consumers
•
Amount of available Amount of available
energy energy decreasesdecreases down the down the
food chainfood chain
•
It takes a It takes a large number large number
of producersof producers to support a to support a
small number of primary small number of primary
consumersconsumers
•
It takes a It takes a large number large number
of primary consumersof primary consumers to to
support a small number of support a small number of
secondary consumerssecondary consumers
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26. 26copyright cmassengale

27. 27
Food Webs:Food Webs:
•
Are Are
interconnected interconnected
food chainsfood chains
•
They show the They show the
feeding feeding
relationships in relationships in
an ecosysteman ecosystem
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28. 28
How Many Chains are in
this web?
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29. 29
Identify the Producers, Consumers, & Identify the Producers, Consumers, &
Decomposers:Decomposers:
Count the Count the
Food Food
Chains!Chains!
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30. 30copyright cmassengale