Niche Concepts and Invasive Species

The video tutorial covers basic ecology terms, focusing on habitat and niche. It explains how species adapt to their environments and the roles they play. Examples of warblers and barnacles illustrate niche differentiation. The competitive exclusion principle is discussed, highlighting how species cannot occupy the same niche simultaneously. The video also addresses the impact of invasive species, using kudzu and pythons as examples, and their effects on native ecosystems.

What is the primary difference between habitat and niche?

• Habitat is the role of a species, while niche is the physical environment.

• Habitat is the physical environment, while niche is the role of a species.

• Habitat and niche are the same concepts.

• Niche is broader than habitat.

Which of the following best describes a niche?

• The climate conditions of a region.

• The food chain of an ecosystem.

• The entire ecosystem where a species lives.

• The specific role and position a species has in its environment.

How do Warblers demonstrate niche differentiation?

• By migrating to different regions.

• By living in different types of trees.

• By eating different types of food.

• By occupying different parts of the same tree.

What is the competitive exclusion principle?

• No two species can occupy the same niche in the same place at the same time.

• Two species can share the same niche indefinitely.

• Species can adapt to any niche they choose.

• Species can only compete for food resources.

What happens when two species compete for the same niche?

• They will merge into a single species.

• They will both become extinct.

• One species will outcompete the other, or they will adapt to different niches.

• They both thrive equally.

What is a fundamental niche?

• The niche a species actually occupies.

• The potential niche a species could occupy without competition.

• The niche a species occupies during migration.

• The niche a species occupies in a different ecosystem.

Why are invasive species a threat to native species?

• They help native species adapt to new environments.

• They increase biodiversity in the ecosystem.

• They provide more food for native species.

• They have no natural predators and outcompete native species.

What was the original purpose of introducing kudzu in the United States?

• To serve as a decorative plant.

• To provide food for livestock.

• To control soil erosion.

• To increase biodiversity.

How do pythons in the Everglades affect the local ecosystem?

• They help control the deer population.

• They become prey for larger animals.

• They consume prey needed by native species.

• They provide shelter for small animals.

What is a key strategy to manage invasive species?

• Implementing control measures to prevent their spread.

• Allowing natural selection to take its course.

• Introducing more invasive species.

• Ignoring them as they will eventually adapt.