Apex Predators and Mesopredators Dynamics

The video discusses the decline of apex predators due to human activities, leading to the rise of mesopredators. These mesopredators, such as raccoons and jackals, have adapted to fill the ecological roles left vacant by apex predators. This shift has caused significant changes in ecosystems, often resulting in negative impacts like increased crop damage and biodiversity loss. In some areas, efforts have been made to reintroduce apex predators, such as wolves in Yellowstone, to restore ecological balance. However, the rise of mesopredators is likely to continue as many people are reluctant to have apex predators nearby.

What role did apex predators traditionally play in food webs?

• They were primary producers.

• They were at the bottom of the food chain.

• They were decomposers.

• They were at the top of the food chain.

How have humans impacted apex predators?

• By providing them with more habitats.

• By protecting them from extinction.

• By breaking up their habitats and hunting them.

• By increasing their population.

What are mesopredators?

• Predators that are larger than apex predators.

• Predators that have replaced apex predators.

• Predators that are herbivores.

• Predators that are extinct.

Which of the following is NOT a mesopredator?

• Raccoon

• Lion

• Mongoose

• Cat shark

What happens when mesopredators replace apex predators?

• Food chains become shorter.

• Ecosystems become more stable.

• Trophic cascades occur.

• Biodiversity increases.

Why do mesopredators thrive near human habitats?

• They are protected by humans.

• They can eat human trash.

• They have more competition.

• They have more natural prey.

What is a trophic cascade?

• A method of conserving energy in food chains.

• A process where apex predators increase in number.

• A chain reaction of changes in an ecosystem due to the removal of a top predator.

• A type of food chain that is very short.

What is one method humans have used to control mesopredator populations?

• Reducing the number of prey species.

• Increasing human settlements.

• Introducing more mesopredators.

• Reintroducing apex predators.

What was the effect of reintroducing wolves to Yellowstone?

• It caused the extinction of coyotes.

• It restored the ecosystem balance.

• It led to a decrease in plant diversity.

• It increased the number of mesopredators.

Why might people be hesitant to have apex predators in their backyard?

• They think apex predators are too small.

• They prefer mesopredators.

• They believe apex predators are not effective.

• They are afraid of losing livestock.