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2  Wolves are introduced into the park → The number of elk calves born to every 100 female elk ​ ​   Stayed the same Decreased  Increased  → The overall elk population Stayed the same Decreased  Increased  → Competition for plants elk eat Stayed the same Decreased  Increased  → Availability of resources for bison Stayed the same Decreased  Increased  → Bison population ​

2  Wolves are introduced into the park → The number of elk calves born to every 100 female elk ​ ​   Stayed the same Decreased  Increased  → The overall elk population Stayed the same Decreased  Increased  → Competition for plants elk eat Stayed the same Decreased  Increased  → Availability of resources for bison Stayed the same Decreased  Increased  → Bison population ​

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Wolves are introduced into the park → The number of elk calves born to every 100 female elk

​
​
 
  • Stayed the same
  • Decreased 
  • Increased 

→ The overall elk population

  • Stayed the same
  • Decreased 
  • Increased 

→ Competition for plants elk eat

  • Stayed the same
  • Decreased 
  • Increased 

→ Availability of resources for bison

  • Stayed the same
  • Decreased 
  • Increased 

→ Bison population

​

 

The scientists also tracked the number of elk calves born per 100 elk females compared to the total number of wolves in the park. Females Number of Elk Calves per 100 Adult Figure 3. Comparison of the Number of Elk Calves per 100 Elk Females to the Number of Wolves in Yellowstone 40 30 20 10 Source: NPS/Yellowstone Wolf Project 0 20 40 60 80 100 Number of Wolves Source: NPS/Yellowstone Wolf Project
Transcribed Image Text:The scientists also tracked the number of elk calves born per 100 elk females compared to the total number of wolves in the park. Females Number of Elk Calves per 100 Adult Figure 3. Comparison of the Number of Elk Calves per 100 Elk Females to the Number of Wolves in Yellowstone 40 30 20 10 Source: NPS/Yellowstone Wolf Project 0 20 40 60 80 100 Number of Wolves Source: NPS/Yellowstone Wolf Project
In 1995, a population of 31 gray wolves was introduced into Yellowstone National Park. The population of the gray wolves fluctuated in the 20-year period after introduction. In 2019 an estimated 80-110 wolves are present in the park. 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 M 16,000 14,000 12,000 10,000 8,000 6,000 4,000 2,000 0 2 4 6 8 10 12 14 16 18 20 Years 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 Source: NPS/Yellowstone Wolf Project 2 4 6 8 10 12 14 16 18 20 Years Elk → Bison The scientists want to use the data to explain the relationship between the wolf introduction and the trends in the elk and bison populations. Select the correct answer for each blank. Each answer may be used more than once. Wolves are introduced into the park → The number of elk calves born to every 100 female elk →Bison population of resources for bison - The overall elk population Competition for plants elk eat → Availability
Transcribed Image Text:In 1995, a population of 31 gray wolves was introduced into Yellowstone National Park. The population of the gray wolves fluctuated in the 20-year period after introduction. In 2019 an estimated 80-110 wolves are present in the park. 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 M 16,000 14,000 12,000 10,000 8,000 6,000 4,000 2,000 0 2 4 6 8 10 12 14 16 18 20 Years 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 Source: NPS/Yellowstone Wolf Project 2 4 6 8 10 12 14 16 18 20 Years Elk → Bison The scientists want to use the data to explain the relationship between the wolf introduction and the trends in the elk and bison populations. Select the correct answer for each blank. Each answer may be used more than once. Wolves are introduced into the park → The number of elk calves born to every 100 female elk →Bison population of resources for bison - The overall elk population Competition for plants elk eat → Availability
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