USE THE FOLLOWING DIAGRAM TO ANSWER THE NEXT 3 QUESTION.
Alberta populations of woodland caribou have been in the past several years. One major influence has been the logging of mature forests which contain lichens necessary for caribou to survive the winter.
The young regenerated forest provides good food supply for moose, deer and elk, which, in turn, will attract and support the growth of a wolf population which preys on the caribou.
Oil and gas activity in these logged areas further increase human contact with the caribou and increase poaching and accidental deaths. The wolves use cutlines and skidoo trails to increase their hunting range.
The table below shows the changes in the populations of animals in the time following the logging of a mature forest
Changes in Three Populations of Animals
Time Population one Population Two Population Three
1 100 20 300
2 150 22 390
3 200 24 280
4 250 25 270
5 350 30 250
6 400 35 210
7 450 65 200
8 500 75 200
9 520 80 170
10 560 100 160
11 580 150 150
12 590 180 140
13 600 250 130
14 600 280 120
15 600 300 110
16 600 300 100
17 610 310 100
18 600 320 100
19 590 310 90
(All of these numbers are in four rows… Time, Population one, Population 2, and Population 3… hope you guys understand what I am trying to say)
12) The population the represents the moose population, and a reasonable explanation for this would be
a) population two, since there is dramatic increase in these large herbivores as the new forest growth increases
b) population three, because the increased caribou population consumes much of the food supply available to the less mobile moose population, and their numbers decrease
c) population three, since logging removes much of the food supply for large herbivores of this type
d) population two, because there is marked decreasein the wolf population, which decreases predation pressure on the moose population
13) The population that represent the wolf population, and an acceptable explanation this, would be
a) population two, which begins at a lower level than population one because the food supply is reduced
b) population one, which reflects an increase in number as a result of the increased moose (deer and elk) population
c) population two, because wolves are consumers and therefore exists in smaller numbers than their prey
d) population three, which decreases as the forest matures and the prey have more cover in which to hide, thereby reducing hunting success
14) The population that represents the caribou population, and an acceptable explanation would be
a) population one, which returns to high population number as the forest regenerates and predator populations decrease
b) population three, which decreases as a result of reduced habitat and increased predation and hunting
c) population three, which reflects the reduction in number expected when population become too large and disease increases mortality
d) population two, which indicates a trend toward increased population as a result of the new supply of regenerated growth
Alberta populations of woodland caribou have been in the past several years. One major influence has been the logging of mature forests which contain lichens necessary for caribou to survive the winter.
The young regenerated forest provides good food supply for moose, deer and elk, which, in turn, will attract and support the growth of a wolf population which preys on the caribou.
Oil and gas activity in these logged areas further increase human contact with the caribou and increase poaching and accidental deaths. The wolves use cutlines and skidoo trails to increase their hunting range.
The table below shows the changes in the populations of animals in the time following the logging of a mature forest
Changes in Three Populations of Animals
Time Population one Population Two Population Three
1 100 20 300
2 150 22 390
3 200 24 280
4 250 25 270
5 350 30 250
6 400 35 210
7 450 65 200
8 500 75 200
9 520 80 170
10 560 100 160
11 580 150 150
12 590 180 140
13 600 250 130
14 600 280 120
15 600 300 110
16 600 300 100
17 610 310 100
18 600 320 100
19 590 310 90
(All of these numbers are in four rows… Time, Population one, Population 2, and Population 3… hope you guys understand what I am trying to say)
12) The population the represents the moose population, and a reasonable explanation for this would be
a) population two, since there is dramatic increase in these large herbivores as the new forest growth increases
b) population three, because the increased caribou population consumes much of the food supply available to the less mobile moose population, and their numbers decrease
c) population three, since logging removes much of the food supply for large herbivores of this type
d) population two, because there is marked decreasein the wolf population, which decreases predation pressure on the moose population
13) The population that represent the wolf population, and an acceptable explanation this, would be
a) population two, which begins at a lower level than population one because the food supply is reduced
b) population one, which reflects an increase in number as a result of the increased moose (deer and elk) population
c) population two, because wolves are consumers and therefore exists in smaller numbers than their prey
d) population three, which decreases as the forest matures and the prey have more cover in which to hide, thereby reducing hunting success
14) The population that represents the caribou population, and an acceptable explanation would be
a) population one, which returns to high population number as the forest regenerates and predator populations decrease
b) population three, which decreases as a result of reduced habitat and increased predation and hunting
c) population three, which reflects the reduction in number expected when population become too large and disease increases mortality
d) population two, which indicates a trend toward increased population as a result of the new supply of regenerated growth