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Yellowstone National Park Ecology Quiz

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Questions and Answers

What was a primary environmental consequence of the absence of wolves in Yellowstone before their reintroduction?

Increased beaver populations leading to over-damming

Improved biodiversity among herbaceous plants

Degradation of willow tree stands along the rivers (correct)

Enhanced growth of coniferous forests in the area

Which of the following statements best explains the unique rarity of the Yellowstone wolf trophic cascade?

It occurs in a region with low biodiversity and few species interactions.

It typically involves multiple apex predators, which is not the case here.

It relies solely on human intervention for maintaining balance in the ecosystem.

It is a result of specific geological formations and climatic conditions unique to the area. (correct)

How do beaver dams affect stream hydrology in Yellowstone?

They create wetland areas that improve water retention. (correct)

They increase water temperature and decrease biodiversity.

They eliminate the need for riverbank vegetation.

They decrease sedimentation in the water bodies.

In what way is the water of Yellowstone National Park particularly vulnerable to human intervention?

It is influenced by tourism that alters natural water flow and quality. Signup and view all the answers

How is most of the water in Yellowstone National Park stored?

In beaver wetlands that regulate and distribute water supply. Signup and view all the answers

What is the significance of having an apex species such as wolves in an ecosystem?

They create a balance by controlling the populations of other species. Signup and view all the answers

How does alloparenting benefit the animal community?

It ensures that offspring receive more care and protection. Signup and view all the answers

What typically characterizes a predator-prey relationship?

Predators control the population of their prey, which affects ecosystem health. Signup and view all the answers

In what way did the absence of wolves affect willow tree stands along rivers?

Overgrazing by deer led to declining health of willow trees. Signup and view all the answers

What role do beaver dams play in stream hydrology?

They create wetlands that support diverse species. Signup and view all the answers

Which of the following best describes the submissive-dominant relationship within a wolf pack?

Submissive behaviors help maintain order and cooperation within the pack. Signup and view all the answers

What commonly limits the survival of an animal species in the wild?

The availability of resources such as food and water. Signup and view all the answers

Which statement accurately describes the impact of wolf hunting on deer herds compared to human hunting?

Wolf hunting can selectively target weaker individuals, benefiting herd health. Signup and view all the answers