Carrying Capacity Homework WOLF DATA

Wolf 1. In what year was the wolf population the largest? ______Year Population 1971 10 2. In which years did the wolf population remain about the same? 1972 12 ______1973 16 1974 22 3. In which years did the wolf population increase? 1975 28 ______1976 24 1977 21 4. In which years did the wolf population decrease? 1978 18 ______1979 19 1980 19 5. Plot the wolf data on the graph below.

30 28 26 24 22 20 18 16 14 12 10

6. What is the carrying capacity for the wolf population? ______

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RABBIT DATA

1. What is the carrying capacity for the rabbit population? ______

2. Is the rabbit population increasing or decreasing from May 1st to June 1st? ______

3. Which month had the lowest rabbit population? ______DEER DATA

# of Deer that # Deer that died died from Deer Population Year # Deer Born from predation starvation Change 1971 800 400 100 + 300 1972 920 480 240 1973 1000 640 500 1974 944 880 180 1975 996 1120 26 1976 836 960 2 1977 788 840 0 1978 766 720 0 1979 780 760 0 1980 790 760 0

1. Calculate the deer population change or each year above.

2. What happens to the deer population when more deer were born than died? ______

3. What happens to the deer population when fewer deer were born than died? ______

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WOLVES & MOOSE

The wolves are predators of the moose. 60 50 1. Between 1965 and 1970 the wolf 40 population went down. Why do you think Wolve s 30 the moose population increased during M oose 20 that time? ______10 0 2. Did the wolf population increase or 1965 1970 1975 1980 1985 decrease from 1970 to 1980? ______

3. What happened to the moose population during this same time period (1970 to 1980)? ______

4. Why do you think the wolf population dropped from 1980 to 1985?

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