1. Population Density Population Density is the measure of how many organisms are in a defined space. low population density high population density One Square Kilometer

2. Stop and Think Population Density is the measure of how many organisms are in a defined space. # of organisms per measure of area What is the population density for each of the kilometers below? One Square Kilometer

3. Stop and Think Population Density is the measure of how many organisms are in a defined space. # of organisms per measure of area As a class you have 1 min to create a high population density somewhere in room.

4. Stop and Think Population Density is the measure of how many organisms are in a defined space. # of organisms per measure of area As a class you have 1 min to create a low population density somewhere in room.

5. Population Density Calculations 1.Determine how many organisms there are 2.Determine the size of the area they live in 3.Divide the number of organisms by the area low population density high population density One Square Kilometer # of organisms: 2 Area: 1 km 2 2/1 km 2 = 2 trees/km 2 # of organisms: 30 Area: 1 km 2 30/1 km 2 = 30 trees/km 2

6. Population Density Calculations # of organisms/ Size of Area= Population Density low population density high population density One Square Kilometer # of organisms: 2 Area: 1 km 2 2/1 km 2 = 2 trees/km 2 # of organisms: 30 Area: 1 km 2 30/1 km 2 = 30 trees/km 2

7. Stop and Think Population Density is the measure of how many organisms are in a defined space. # of organisms per measure of area You measure a 4m by 4m quadrat. You found 24 Blackberry Plants in that area. What is the population density? 4m

8. Practice In your groups work together to solve population density problems on the worksheet provided

9. Pictures Fill in the graphic organizer by pictures

10. Pictures What did all of the pictures have in common? What do you think the pictures are showing?