Energy Flow Through an Ecosystem - PowerPoint PPT Presentation

1 / 29
About This Presentation
Title:

Energy Flow Through an Ecosystem

Description:

Begins with the SUN. Photosynthesis. 6CO2 6H2O sunlight & chlorophyll C6H12O6 6O2 ... Chemical reaction where green plants use water & carbon dioxide to ... – PowerPoint PPT presentation

Number of Views:542
Avg rating:3.0/5.0
Slides: 30
Provided by: maryp163
Category:

less

Transcript and Presenter's Notes

Title: Energy Flow Through an Ecosystem


1
Energy Flow Through an Ecosystem
  • Food Chains, Food Webs, Energy Pyramids

2
  • Begins with the SUN
  • Photosynthesis

6CO2 6H2O sunlight chlorophyll ?C6H12O6
6O2
3
  • Photosynthesis
  • Chemical reaction where green plants use water
    carbon dioxide to store the suns energy in
    glucose
  • ENERGY is stored in glucose
  • Glucose is stored as starch in plants

4
Organisms that can make glucose during
photosynthesis are called PRODUCERS.
5
Producers use most of the energy they make for
themselves.
6
Producers use cellular respiration to supply the
energy they need to live.
7
CELLULAR RESPIRATION is the chemical reaction
that releases the energy in glucose.
6O2 C6H12O6 --gt  6H2O 6CO2 energy
8
The energy that is not used by producers can be
passed on to organisms that cannot make their own
energy.
9
Organisms that cannot make their own energy are
called CONSUMERS.
10
Consumers that eat producers to get energy
  • Are first order (1st) or primary consumers
  • Are herbivores (plant-eaters)

11
Most of the energy the primary consumer gets from
the producer is used by the consumer.
12
Some of the energy moves into the atmosphere as
heat.
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).
14
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

15
Most of the energy the secondary consumer gets
from the primary consumer is used by the
secondary consumer.
16
Some of the energy is lost as heat, but some
energy is stored and can passed on to another
consumer.
17
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

18
Consumers that eat producers other consumers
  • Are called omnivores
  • Omnivores eat plants and animals

19
Consumers that hunt kill other consumers are
called predators.The animals that are hunted
killed are called prey.
20
Consumers that eat other dead consumers are
called scavengers
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.
22
Food Chains Show Available Energy
23
More Food Chains
24
Another way of showing the transfer of energy in
an ecosystem is theENERGY PYRAMID
25
Energy Pyramids Show
  • Amount of available energy decreases for higher
    consumers
  • 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

26
(No Transcript)
27
Food Webs
  • Are interconnected food chains
  • They show the feeding relationships in an
    ecosystem

28
How Many Chains are in this web?
29
Identify the Producers, Consumers, Decomposers
Count the Food Chains!
Write a Comment
User Comments (0)
About PowerShow.com