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

Biosphere

Ecology

Ecosystem

Bellringer--Ecosystem– vocab visuals – p. 731 glossaryWrite all book definitions first before drawing pictures

Word Book definition Biotic factor living parts of an ecosystemAbiotic factor nonliving parts of an ecosystemBiosphere 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. rockb. 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 picture

Limiting factor

Habitat

Niche

Population

community

Adaptation A variation that makes an organism better suited to its environment

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.mcgraw-hill.com/sites/dl/free/0078778069/160350/00050757.html

• http://glencoe.mcgraw-hill.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=0B666D65-13A0-46AD-9914-4C7BA106DA46&blnFromSearch=1&productcode=US

• Biology: The Science of Life: Ecology: Organisms in Their Environment

Ecosystems video

• Brain pop video on “ecosystems’”

• http://www.brainpop.com/science/ecologyandbehavior/ecosystems/

• Video discusses ecosystems, habitats, communities, populations

Organism_____

Population___________

Community_____________

Habitat_____________________

Ecosystem______________________

Ecosystems- vocab visuals– glossary p. 731

Word Book definition picture

Producer

Consumer

Decomposer

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-hill.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/subjects/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. squidb. plankton d. whales

In this ocean food web, which animal do whales eat?a.krill c. penguinsb.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.mcgraw-hill.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