Example Matter Cycler, Energy Pyramid and	Name_________
schmied/reid©2010	Population Density Problems	Period___
all rights reserved	EE Core 2 - Ecology

See Matter Cycler and Energy Pyramid outline below assignment.

Note: The Number of levels in the Matter Cyclers and Energy Pyramid depend on the number of organisms in the food chain..

1A. Matter Cycler:

1. Create a complete Matter Cycler using the following creatures.

   Lady Bug, Coyote, Aphid, Fungi (Mushroom), House Cat, Bewick's Wren, Wolf

   1. a. Sort the creatures into the correct food chain

      b. Tell each creature's name

      c. Tell each creature's niche and catagory

1B. Energy Pyramid

1. Use all the creatures from the Matter Cycler scenario above (in proper order) and complete a standard Energy Pyramid.

   1. Start with 125,000,000 calories at the producer level.

   2. Be sure to show

   1. a. Name of creature at each level

      b. Niche and catagory of each creature

      c. Calories at each level

      d. Calories lost at each transfer

Bonus EC – Neatly draw each creature on the Energy Pyramid

Part 3:  Calculate the Population Density for these 3 countries and rank each from highest population density to lowest. 

Rank	Country/Region	Population	Area (km2)	Density(Pop/ km2)
	Hong Kong (China)	7,008,900	1,104
	Bangladesh	162,221,000	143,998
	South Korea	48,456,369	99,538

Part 4

1. See the attached list of abiotic and biotic factors.  Decide which are the Abiotic Limiting Factors and Biotic Limiting Factors on the list provided. 
2. Next create a list named “Limiting Factors”
3. Make two columns on the list.  Label one column “Abiotic Factors” and the other “Biotic Factors”. 
4. Finally, list all Abiotic and Biotic factors Alphabetically in the proper column.

Part 4	Limiting Factors
Abiotic Factors “Non Living Factors”		Biotic Factors “Living Factors”
	Abundance of Prey Air Altitude Amount of mates Biotic Potential Carrying Capacity Climate Cloud Cover Commensalism Competition for food Disease Energy Fire Growth rate Latitude Light intensity Mutualism Nutrients Nesting Space Oxygen availability Parasitism pH (acid/basic) Pollution Population Density Precipitation Predators High/Low Temperatures Topography Seasonal length Space Soil quality Succession Water sources Wind speed

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© 2009 John Schmied & Mike Reid all rights reserved