Ecosystem notes

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					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             Book definition   picture
Biotic factor
Abiotic factor
    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
• Living parts of the ecosystem
• Also, those things that were once living
• Plants, animals, bacteria
• 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

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
Cut out magazine pictures or make drawings
 to list different abiotic and biotic factors
• Can be very small such as a pile of leaves
  or large such as the 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                  picture
Limiting factor

Adaptation        A variation that makes an
                  organism better suited to
•                 its environment
• The role of an organism in its ecosystem

• What niche can a rotting log play in an
            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
• What kind of populations will you find in a
  forest ecosystem?
• Brain pop movie clip: “Population growth”
• http://glencoe.mcgraw-
• http://glencoe.mcgraw-
                      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
• Biology: The Science of Life: Ecology:
  Organisms in Their Environment
         Ecosystems video
• Brain pop video on “ecosystems’”
• Video discusses ecosystems, habitats,
  communities, populations




    Ecosystems- vocab visuals–
         glossary p. 731
Word             Book definition           picture
Food web         Overlapping food chains
                 in an ecosystem
Energy pyramid
          Ecosystem video
• Give 3 examples of decomposers,
  producers, and consumers in the video
       Virtual lab-food chain
• Text virtual lab
• http://glencoe.mcgraw-

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
              Food web
• Example:
• Grass    mice      snake    hawk

Analyze the food chain above and describe
 what would happen if you removed one
               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.
• 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.mcgraw-
• “Barrier islands: To build or not to build”
• Students research to write a letter to the
  editor supporting or against barrier island
                        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
• 2, I am the things that limit the size of a
• 3. I am all of the populations in an area
  put together
• 4. I am a group of the same types of
             Vocab. quiz
• 1. I am a series of overlapping food
• 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

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