Ecosystem Population Dynamics

In lesson 8 of the series on populations and resources, the teacher reviews the concept of competition and explores indirect effects in ecosystems using a digital model. The lesson focuses on understanding how changes in one population can affect others, even if they are not directly connected. Through analysis, students learn about the implications of these changes for moon jelly populations and are encouraged to think critically about ecosystem dynamics. The lesson concludes with a preview of the next steps in the series.

What happens to the lion population if the hyena population increases?

• The lion population increases.

• The lion population decreases.

• The lion population remains stable.

• The lion population becomes extinct.

What is an indirect effect in an ecosystem?

• A change in one population causing changes in another, not directly connected.

• A direct interaction between two species.

• A change in climate affecting all populations.

• A predator-prey relationship.

In the digital model, what happens when the number of verbals is decreased?

• The claw cats increase in number.

• The green leaves increase in number.

• The scale beaks increase in number.

• The scale beaks decrease in number.

How does a decrease in walleye pollock affect the moon jelly population?

• It causes the moon jelly population to increase.

• It causes the moon jelly population to decrease.

• It causes the moon jelly population to become extinct.

• It has no effect on the moon jelly population.

What role do orcas play in the moon jelly population dynamics?

• They have no effect on moon jellies.

• They decrease sea turtle populations, affecting moon jellies.

• They increase sea turtle populations, affecting moon jellies.

• They directly consume moon jellies.

What is the significance of biodiversity in an ecosystem?

• It has no impact on ecosystem health.

• It causes overpopulation of certain species.

• It leads to the extinction of weaker species.

• It ensures a stable and balanced ecosystem.

What is the primary focus of the next lesson?

• Exploring new ecosystems.

• Analyzing more population evidence.

• Learning about human impact on ecosystems.

• Studying climate change effects.