Impact of Wolf Reintroduction in Yellowstone

In 1995, wolves were reintroduced to Yellowstone National Park after a century of absence. Their return restored ecological balance, reducing elk populations and allowing vegetation to recover. This trophic cascade improved habitats for various species and enhanced water quality. The wolves also boosted local tourism, contributing significantly to the economy. Overall, the reintroduction of wolves has had profound ecological and economic benefits.

What significant event occurred in Yellowstone National Park in 1995?

• Discovery of a new geyser

• Construction of a new visitor center

• Reintroduction of wolves

• Introduction of new plant species

What was the main consequence of the absence of wolves in Yellowstone?

• Increase in bear population

• Overpopulation of elk

• Decline in fish species

• Increase in tourism

How did the overpopulation of elk affect the riverbanks in Yellowstone?

• Formation of new lakes

• Increased tree growth

• Erosion of riverbanks

• Improved water quality

What was one of the direct benefits of wolf reintroduction on other wildlife?

• Decrease in bird species

• Reduction in fish habitats

• Decline in bear numbers

• Increase in scavenger populations

What effect did the wolves have on the riverbank trees?

• Trees became smaller

• Trees were cut down

• Trees grew five times larger

• Trees stopped growing

What is a trophic cascade?

• A method of animal tracking

• A type of plant growth

• A type of waterfall

• A chain reaction of ecological effects

How did the reintroduction of wolves impact the local economy?

• Reduced park funding

• Increased job opportunities

• Lowered visitor numbers

• Decreased tourism

Which species benefited from the cleaner rivers due to wolf reintroduction?

• Deer

• Bears

• Otters

• Eagles

What was one of the surprising benefits of wolf reintroduction?

• Decline in fish populations

• Increase in air pollution

• Cleaner drinking water for nearby residents

• Decrease in plant diversity

What was the overall impact of the wolves on Yellowstone's ecosystem?

• Decline in biodiversity

• Increased pollution

• Destruction of habitats

• Restoration of ecological balance