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ECOSYSTEMS
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
Population
What is a population?All the organismsBelong to same species
Live in the same geographical area
Community
What is a community?Group of interacting species
Share a populated environment
Include living and non-living organisms
Interactions Organisms
interact in various ways May be
beneficial Shelter, Food,
Safety May not be
beneficial Harmful to the
organism Harmful to other organisms
Biotic Factors
Living OrganismsPlantsAnimalsFungiProtistaBacteria
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
What is a Food Chain?
Shows how each living thing gets food
Starts with Sun/plant life
Ends with an animal
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
Producers and Decomposers
Producers Plants Use light
energy from sun
Produce food from CO2 and Water
Decomposers Bacteria and
fungi- Feed on decaying matter.
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
Food Web Cont.
Environmental Changes Land-Use
Change Storm Severity Species
Behavior Population
Growth Rate Evolution
Great Lakes Region
Sand dunes, coastal marshes, rocky shorelines
Lake plain prairies, savannas, forests
Four Seasons Summer and Fall Spring and Winter
Great Beaches
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!
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.
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.
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
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