Use the data to place the descriptions that best describe the carrying capacity in elk and bison from Year 1 to Year 20. Drag the correct answer into each box. Elk Carrying Capacity Bison Carrying Capacity Did not change Decreased Increased

Concepts of Biology
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Author:Samantha Fowler, Rebecca Roush, James Wise
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Chapter19: Population And Community Ecology
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Problem 2ACQ: Figure 19.6 If the major food source of seals declines due to pollution or overfishing, which of the...
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Use the data to place the descriptions that best describe the carrying capacity in elk and bison from Year 1 to Year 20. Drag the correct answer into each box.
Elk Carrying Capacity
Bison Carrying Capacity
Did not change
Decreased
Increased
Transcribed Image Text:Use the data to place the descriptions that best describe the carrying capacity in elk and bison from Year 1 to Year 20. Drag the correct answer into each box. Elk Carrying Capacity Bison Carrying Capacity Did not change Decreased Increased
Wolves, elk, and bison are native to Yellowstone, but the wolves disappeared in the 1920s due to excessive hunting. Wolves are primarily carnivores, and elk and bison are primarily herbivores.
A team of scientists monitored the population of wolves in Yellowstone for the first 20 years after their release.
Number of Individuals
200
180
160
140
120
100
80
60
40
20
0
Number of Individuals
Figure 1. Number of Wolves
in Yellowstone After Release
The scientists also monitored the populations of elk and bison in Yellowstone for the first 20 years after the wolves' release.
Figure 2. Number of Elk
and Bison in Yellowstone
After Wolf Release
16,000
14,000
12,000
10,000
8,000
6,000
4,000
2,000
0
Number of Elk Calves
per 100 Adult Females
40
30
2 4 6 8 10 12 14 16 18 20
Years
20
Source: NPS/Yellowstone Wolf Project
10
The scie ists also tracked the number of elk calves born per 100 elk females compared to the total number of wolves in the park.
Figure 3. Comparison of the
Number of Elk Calves per
100 Elk Females to the Number
of Wolves in Yellowstone
Labe
2 4 6 8 10 12 14 16 18 20
Years
Elk
→ Bison
Source: NPS/Yellowstone Wolf Project
20 40 60 80 100
Number of Wolves
Source: NPS/Yellowstone Wolf Project
Transcribed Image Text:Wolves, elk, and bison are native to Yellowstone, but the wolves disappeared in the 1920s due to excessive hunting. Wolves are primarily carnivores, and elk and bison are primarily herbivores. A team of scientists monitored the population of wolves in Yellowstone for the first 20 years after their release. Number of Individuals 200 180 160 140 120 100 80 60 40 20 0 Number of Individuals Figure 1. Number of Wolves in Yellowstone After Release The scientists also monitored the populations of elk and bison in Yellowstone for the first 20 years after the wolves' release. Figure 2. Number of Elk and Bison in Yellowstone After Wolf Release 16,000 14,000 12,000 10,000 8,000 6,000 4,000 2,000 0 Number of Elk Calves per 100 Adult Females 40 30 2 4 6 8 10 12 14 16 18 20 Years 20 Source: NPS/Yellowstone Wolf Project 10 The scie ists also tracked the number of elk calves born per 100 elk females compared to the total number of wolves in the park. Figure 3. Comparison of the Number of Elk Calves per 100 Elk Females to the Number of Wolves in Yellowstone Labe 2 4 6 8 10 12 14 16 18 20 Years Elk → Bison Source: NPS/Yellowstone Wolf Project 20 40 60 80 100 Number of Wolves Source: NPS/Yellowstone Wolf Project
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