Ecosystem notes
Bell ringer
• P. 618 B “Target your reading”
• 1-9 please write A if you agree with the
statements and D if you do not agree with
the statements
8/21/09 Bellringer--Ecosystem–
vocab visuals – p. 731 glossary
Write all book definitions first
before drawing pictures
Word
Biotic factor
Abiotic factor
Biosphere
Ecology
Ecosystem
Book definition
picture
Bellringer--Ecosystem– vocab visuals – p. 731 glossary
Write all book definitions first before drawing pictures
Word
Book definition
Biotic factor
living parts of an ecosystem
Abiotic factor nonliving parts of an ecosystem
Biosphere
part of Earth that supports life, including
the top portion of Earth’s crust, the atmosphere, and all the
water on Earth’s surface
Ecology
study of the interactions that take place among
organisms and their environment
Ecosystem
all the living organisms in an area, as well
as the nonliving parts of their environment; community of
organisms that interact with each other
biotic
• Living parts of the ecosystem
• Also, those things that were once living
• Plants, animals, bacteria
Abiotic
• nonliving parts of the ecosystem
• Sunlight, water, temperature, soil, air
• “A” means “not”
“What’s in the scene?”
Abiotic vs. Biotic
Make two columns and label one “abiotic”
and the other one “biotic”
Examine the picture and write in each
column as many abiotic and biotic factors
as you can find
Bellringer
On the coral reef ecosystem figure shown,
which factor is biotic?
a.
rocks
c.
sea horse
b.
sand
d.
water
On the coral reef ecosystem figure shown,
which factor is abiotic?
a.
algae
c.
rock
b.
sharks d.
sponges
Bell ringer
• An aquarium of turtles can be considered a small
ecosystem. Which of the following is an example of how
the turtles could interact with an abiotic part of the
aquarium ecosystem?
• A. turtles eat insects you place in the aquarium
• B. turtles fight each other for food
• C. turtles move onto rocks heated by sunlight
• D. turtles pull into their shells when you startle
•
them
Abiotic and biotic factors
Divide into groups
Make two lists on a piece of paper at the top
abiotic and biotic
Go outside and find as many abiotic factors
and biotic factors and write on the list
Abiotic vs. biotic factors
Draw a line to divide the poster in half and
label one side biotic and the other side
abiotic
Cut out magazine pictures or make drawings
to list different abiotic and biotic factors
ecosystem
• Can be very small such as a pile of leaves
or large such as the biosphere
Biosphere
• Consists of all the land and water on earth
as well as the atmosphere
• Largest ecosystem on earth
Ecosystems – vocab visuals – p.
731 glossary
Word
Definition
Limiting factor
Habitat
Niche
Population
community
Adaptation
A variation that makes an
organism better suited to
its environment
picture
•
niche
• The role of an organism in its ecosystem
• What niche can a rotting log play in an
ecosystem?
Limiting factors
• Anything that can restrict the size of a
populaiton, including living and nonliving
features of an ecosystem, such as
predators or drought
Limiting factor activity
• Bear habitat activity
Limiting factor activity
• Bird activity with clips, beans, corn
kernels, marbles
Bell ringer
• In a meadow ecosystem, hawks feed mostly on mice.
When the mice population is small, there is less food for
hawks, so the hawk population becomes smaller. When
the mice population becomes smaller. When the mice
population grows. The number of hawks also grows.
For the hawk population, the number of mice in this
meadow is an example of a
• A. Niche
• B. Habitat
• C. Producer
• D. Limiting factor
Community and population
• community- all the populations that live in
an ecosystem
• Population-a group of the same type of
organisms living in the same place at the
same time
population
• What kind of populations will you find in a
forest ecosystem?
Population
• Brain pop movie clip: “Population growth”
• http://glencoe.mcgrawhill.com/sites/dl/free/0078778069/160350/
00050757.html
• http://glencoe.mcgrawhill.com/sites/0078778069/student_view0/
brainpop_movies.html#
Bell ringer
What was the approximate population density of the prey population
in April and May?
A) 8 B) 12 C) 10 D) 14 3
In which month was the prey population the lowest?
A) April B) November C) February D) December
bell ringer
• During which season did the rose insect
population grow the fastest?
• A) spring B) summer C) fall D) winter
Ecosystem video
• http://player.discoveryeducation.com/index
.cfm?guidAssetId=0B666D65-13A0-46AD99144C7BA106DA46&blnFromSearch=1&prod
uctcode=US
• Biology: The Science of Life: Ecology:
Organisms in Their Environment
Ecosystems video
• Brain pop video on “ecosystems’”
• http://www.brainpop.com/science/ecologya
ndbehavior/ecosystems/
• Video discusses ecosystems, habitats,
communities, populations
Organism
_____
Population
___________
Community
_____________
Habitat
_____________________
Ecosystem
______________________
Ecosystems- vocab visuals–
glossary p. 731
Word
Producer
Consumer
Decomposer
Food web
Energy pyramid
Book definition
Overlapping food chains
in an ecosystem
picture
Ecosystem video
• Give 3 examples of decomposers,
producers, and consumers in the video
Virtual lab-food chain
• Text virtual lab
• http://glencoe.mcgrawhill.com/sites/0078778069/student_view0/
unit6/chapter21/virtual_lab.html
Match organisms to their role in a food chain
/ web
Food web
• Overlapping food chains in an ecosystem
• Remove one organism- the consumers
that eat the removed organism will
decrease, the organism that is eaten by
the removed organism will increase
Food web
http://www.enchantedlearning.com/subject
s/foodchain/
Food web
• Example:
• Grass
mice
snake
hawk
Analyze the food chain above and describe
what would happen if you removed one
organism
Food web
• Human food web activity in folder
Bell ringer
To complete food chain 1 in the figure shown, you would draw an arrow
from _____ to Plant.
• a. Dead Bird
c.
Insect
• b. Hawk
d.
Sunlight
To complete food chain 2 in the figure shown, you would draw an arrow
from _____ sunlight to Hawk.
• a. Bacteria
c.
Plant
• b. Dead Bird
d.
Snake
Bell ringer
• To complete food chain 3 in the figure shown, you would
draw an arrow from Bird to _____.
• a. Bacteria
c.
Hawk
• b. Dead Plant d.
Sunlight
In this ocean food web, which animal does not eat krill?
a.
fish
c.
squid
b.
plankton d.
whales
In this ocean food web, which animal do whales eat?
a. krill
c.
penguins
b. Orcas
d.
squid
List the first-level consumer.
List the second-level consumers.
List the third-level consumers.
Symbiosis
•
•
•
•
P. 45 Ecology chapter resources
Chart with 3 mc questions
Mutualism- both organisms benefit
Commensalism-one organism benefits,
the other is not harmed nor helped
• Parasitism-one organism benefits, the
other is harmed
web quest
• http://glencoe.mcgrawhill.com/sites/0078778069/student_view0/
unit6/webquest_projects.html
• “Barrier islands: To build or not to build”
• Students research to write a letter to the
editor supporting or against barrier island
development
Bell ringer
The figure shown illustrates a _____.
• a. community
c.
limiting factor
• b. ecosystem
d.
population density
The biotic and abiotic factors in the figure shown share a _____.
• a. community
c.
population
• b. habitat
d.
shelter
In the figure shown, _____ an abiotic factor.
• a. birds are
c.
insects are
• b. flowers are
d.
rainfall is
Which of these factors is biotic?
• a. insects c.
sunlight
• b. water d.
soil
Vocab. quiz
•
•
•
•
1. I am the nonliving part of an ecosystem
2. I am the living part of an ecosystem
3. I am any living thing.
4. I am organisms interacting with one
another and with nonliving factors
• 5. I am the part of earth where organisms
can live
Vocab. quiz
• 1. I am the role of an organism in an
ecosystem
• 2, I am the things that limit the size of a
population
• 3. I am all of the populations in an area
put together
• 4. I am a group of the same types of
organisms
Vocab. quiz
• 1. I am a series of overlapping food
chains
• 2. I use dead organisms and the waste
materials of other organisms for food
• 3. I eat other organisms
• 4. I make my own food