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EFFECTS OF CHANGE

E FFECTS OF C HANGE. The prairie ecosystem has many populations Use these organisms to create a food web. The producers are in green, plant eaters

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A L OOK AT O VERGRAZING  The next slide will show an overhead view of a prairie.  For this slide we will only focus on the grass and buffalo.  The grass is shown as green squares and the buffalo as black ovals.

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Page 1: E FFECTS OF C HANGE.  The prairie ecosystem has many populations  Use these organisms to create a food web.  The producers are in green, plant eaters

EFFECTS OF CHANGE

Page 2: E FFECTS OF C HANGE.  The prairie ecosystem has many populations  Use these organisms to create a food web.  The producers are in green, plant eaters

EFFECTS OF CHANGE

The prairie ecosystem has many populations

Use these organisms to create a food web.

The producers are in green, plant eaters in blue, and animal eaters in orange.

Tallgrass Shortgrass

Wildflowers Big Bluestem

Pronghorn BuffaloMice Prairie Dog

Black Footed Ferret

Prairie Chicken

Burrowing Owl Grasshoppers

Beetles Snakes

Page 3: E FFECTS OF C HANGE.  The prairie ecosystem has many populations  Use these organisms to create a food web.  The producers are in green, plant eaters

A LOOK AT OVERGRAZING

The next slide will show an overhead

view of a prairie.

For this slide we will only focus on the

grass and buffalo.

The grass is shown as green squares

and the buffalo as black ovals.

Page 4: E FFECTS OF C HANGE.  The prairie ecosystem has many populations  Use these organisms to create a food web.  The producers are in green, plant eaters

GRASSLANDEach column has 10 squares of grass. There are 20 columns.Calculate how many squares of grass are available.

Page 5: E FFECTS OF C HANGE.  The prairie ecosystem has many populations  Use these organisms to create a food web.  The producers are in green, plant eaters

GRASSLANDEach buffalo needs 25 squares of grass to survive. How many buffalo can live in this area?

Page 6: E FFECTS OF C HANGE.  The prairie ecosystem has many populations  Use these organisms to create a food web.  The producers are in green, plant eaters

GRAZINGWhat will happen if we put 20 buffalo in this area?

Page 7: E FFECTS OF C HANGE.  The prairie ecosystem has many populations  Use these organisms to create a food web.  The producers are in green, plant eaters

EFFECTS ON OTHER

POPULATIONSWhat will happen to the grass? Explain your answer.

Page 8: E FFECTS OF C HANGE.  The prairie ecosystem has many populations  Use these organisms to create a food web.  The producers are in green, plant eaters

EFFECTS ON OTHER

POPULATIONSWhat will happen to the ferrets? Explain your answer.

Page 9: E FFECTS OF C HANGE.  The prairie ecosystem has many populations  Use these organisms to create a food web.  The producers are in green, plant eaters

HIGHWAYSWhat effects will building a highway have on the area?