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ECOSYSTEMS
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What is an Ecosystem? Biological
Environment Consists of
Organisms Live in a
particular area Includes Non-
living organisms Physical
Components of the Environment
Organisms Interact
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Population
What is a population?All the organismsBelong to same species
Live in the same geographical area
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Community
What is a community?Group of interacting species
Share a populated environment
Include living and non-living organisms
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Interactions Organisms
interact in various ways May be
beneficial Shelter, Food,
Safety May not be
beneficial Harmful to the
organism Harmful to other organisms
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Biotic Factors
Living OrganismsPlantsAnimalsFungiProtistaBacteria
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Abiotic Factors Non-living
Organisms Affect living
organisms Environmental
factors such as habitatPond, lake, ocean,
desert, mountain Weather Factors
Temperature, cloud cover, rain, snow hurricanes
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What is a Food Chain?
Shows how each living thing gets food
Starts with Sun/plant life
Ends with an animal
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Consumers Cannot make
their own food Feed on other
plants/animals Three types of
consumers: Herbivores- Eat
only plants Carnivores- Eat
other animals Omnivores- Eat
both plants and animals
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Producers and Decomposers
Producers Plants Use light
energy from sun
Produce food from CO2 and Water
Decomposers Bacteria and
fungi- Feed on decaying matter.
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Food Web
Shows all feeding relationships between organisms living in an
ecosystem
More complex the a food chain More accurate then food chains Several food chains joined
together Organisms depend on more
than one species for food
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Food Web Cont.
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Environmental Changes Land-Use
Change Storm Severity Species
Behavior Population
Growth Rate Evolution
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Great Lakes Region
Sand dunes, coastal marshes, rocky shorelines
Lake plain prairies, savannas, forests
Four Seasons Summer and Fall Spring and Winter
Great Beaches
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Food Web Assignment
Create your own food web Worth 10 points Must consist of at least 10
organisms Must be Accurate Be creative Have fun with it!
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Citations
Ecosystem Photo- Attribution Non-Commercial No Derivs License. March 26, 2009.
Beaver dam Photo- Attribution Non-Commercial No Derivs License. Kent Runge. November 17, 2003.
Frog Photo- Attribution Share-Alike License. Jean Mark-Hero. February 25, 2009.
Tiger Photo- Attribution Non-Commercial No Derivs License. July 25, 2009.
Mountain Photo- Attribution Non-Commercial License. May 9, 2007.
Giraffe Photo- Attribution Share-Alike License. Mbdortmund. May 2008.
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Citations
Lion Photo- Attribution Non-Commercial Share-Alike License. September 4, 2009.
Pig Photo- Attribution License. August 26, 2004.
Flower Photo- Attribution Share-Alike License. February 21, 2006.
Fungi Photo- Attribution License. Tornado Photo- Attribution No Derivs
License. May 30, 2004. Beach Photo- Attribution Non-Commercial
No Derivs License. Rich Evenhouse. September 2, 2007.
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Citations
Ecosystems. Wikipedia Foundations Inc. October 2, 2010. http://en.wikipedia.org/wiki/Ecosystem
Populations. Wikipedia Foundations Inc. October 2, 2010. http://en.wikipedia.org/wiki/Population
Community. Wikipedia Foundations Inc. October 6, 2010. http://en.wikipedia.org/wiki/Community
Interactions Within Ecosytems. Suite 101. Angela Plumb. November 23, 2001. http://www.suite101.com/article.cfm/science_students/85535
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Citations
Biotic and Abiotic Factors. Oracle Think Quest Education Foundation. http://library.thinkquest.org/CR0210243/
Food Chains and Food Webs. Parenting the Next Generation. October 7, 2010. http://www.vtaide.com/png/foodchains.html
Environmental Changes. Great Lakes Information Network. Christine Manninin. June 17, 2009. http://www.great-lakes.net/infocenter/restoration.html