Understanding the Reintroduction of Wolves

What happened to the wolf population in the lower 48 states by the mid-1900s?

• They were thriving

• They were nearly wiped out

• They were relocated

• They became a protected species

In what year were wolves completely removed from Yellowstone?

• 1926

• 1935

• 1940

• 1950

What was a primary reason for the government's support of wolf extermination?

• To protect livestock

• To increase tourism

• To boost other wildlife populations

• To promote hunting

Which species were considered more desirable than wolves by the National Park Service?

• Bears and deer

• Elk and Deer

• Coyotes and Rabbits

• Fish and Birds

What ecological issue arose shortly after the wolves were eliminated from Yellowstone?

• Increased biodiversity

• Improved water quality

• Soil erosion and lass of vegetation

• Decrease in elf population

What act allowed for the reintroduction of wolves in 1975?

• The National Wildlife Act

• The Endangered Species Act

• The Animal Rights Act

• The Conservation Act

How many wolves were reintroduced to Yellowstone in 1995?

• 5

• 8

• 12

• 15

What is a trophic cascade?

• A chain reaction caused by a top predator

• The increase of plant species

• The extinction of multiple species

• A method of ecological restoration

How did the presence of wolves change elk behavior?

• Elk became more aggressive

• Elk migrated out of Yellowstone

• Elk grazed more freely

• Elk became more vigilant and browsed less

What was one ecological benefit of reintroducing wolves?

• Decrease in beaver populations

• Increase in songbird populations

• Elimination of invasive species

• Higher competition among scavengers