Biodiversity and Ecosystem Dynamics

The video explores biodiversity in the context of AP Biology, focusing on ecosystem, species, and genetic diversity. It discusses how ecosystem diversity contributes to resilience against environmental changes and the role of producers and predators in maintaining biodiversity. The video highlights the importance of keystone species, using examples like the Kabab Plateau and Yellowstone wolves, to illustrate how these species are crucial for ecosystem stability.

What are the three levels of biodiversity discussed in the video?

• Ecosystem, species, and genetic diversity

• Ecosystem, climate, and genetic diversity

• Species, genetic, and climate diversity

• Ecosystem, species, and climate diversity

How does ecosystem diversity contribute to its resilience?

• By decreasing genetic diversity

• By reducing the number of species

• By increasing the number of ecosystems

• By making ecosystems more vulnerable

What is the effect of producers on biodiversity maintenance?

• Producers have no effect on biodiversity

• Producers decrease ecosystem stability

• Producers affect the entire ecosystem's health

• Producers only affect genetic diversity

In a polar ecosystem, where is most of the producer level found?

• Underground

• In the water

• On land

• In the air

What was the consequence of removing predators from the Kaibab Plateau?

• Increased biodiversity

• Deer population control

• Improved ecosystem stability

• Resource depletion and deer population crash

Why is hunting sometimes used to maintain biodiversity?

• To balance predator-prey relationships

• To reduce ecosystem diversity

• To increase predator populations

• To eliminate all predators

What is a keystone species?

• A species that holds the ecosystem together

• A species that is not important to its ecosystem

• A species that is always a producer

• A species that is the most abundant

What happened when wolves were reintroduced to Yellowstone?

• Wolves became extinct

• Ecosystem diversity decreased

• Ecosystems rebounded and balanced

• Ecosystems dwindled further

How can biodiversity be maintained in ecosystems?

• By eliminating all predators

• Through both top-down and bottom-up approaches

• Only through bottom-up approaches

• Only through top-down approaches

What is the role of predators in ecosystems with high production?

• They have no role

• They maintain biodiversity

• They decrease ecosystem stability

• They increase genetic diversity