How Wolves Change Rivers - Unit 6 (Ecology) Biology

Front

What is a trophic cascade?

Back

An ecological process triggered by the removal or addition of a top predator that causes changes throughout the food chain.

Front

Why did the height of trees grow dramatically after the reintroduction of wolves?

Back

The elk was not there to eat it, and now it can grow.

Front

What happened to the vegetation because of the elk population?

Back

The elk ate it all; they reduced the vegetation to almost nothing.

Front

What is the role of wolves in an ecosystem?

Back

Wolves are top predators that help regulate the populations of herbivores, which in turn affects vegetation and the overall health of the ecosystem.

Front

When were the wolves reintroduced to Yellowstone National Park?

Back

1995

Front

How do wolves affect river ecosystems?

Back

By controlling elk populations, wolves help stabilize vegetation, which reduces erosion and changes the flow of rivers.

Front

What is the significance of vegetation in an ecosystem?

Back

Vegetation provides food and habitat for various species, stabilizes soil, and plays a crucial role in the water cycle.

Front

What is the impact of overgrazing by herbivores like elk?

Back

Overgrazing can lead to soil erosion, loss of plant species, and degradation of the ecosystem.

Front

How does the presence of wolves influence the behavior of elk?

Back

The presence of wolves causes elk to change their grazing patterns, often avoiding areas where they are more vulnerable to predation.

Front

What is ecological balance?

Back

Ecological balance refers to the equilibrium between living organisms and their environment, ensuring sustainability.