Ecological Concepts and Species Interactions

The video tutorial explores interactions within a community, focusing on species roles and niches. It explains competition, both interspecific and intraspecific, and introduces resource partitioning. Adaptive radiation is discussed with examples like Galapagos finches. The impact of invasive species on ecosystems is highlighted, using scotch broom as an example. The concept of succession, both primary and secondary, is explained, detailing how ecosystems evolve over time to reach a climax community.

What term describes the role a species plays in its community, including its habitat, food, and behaviors?

• Community

• Ecosystem

• Niche

• Habitat

What is the difference between interspecific and intraspecific competition?

• Interspecific is between different species, intraspecific is within one species

• Interspecific is within one species, intraspecific is between different species

• Both are within one species

• Both are between different species

How do species avoid competition through resource partitioning?

• By migrating to a new area

• By using the same resource at different times or in different ways

• By becoming predators

• By using different resources

What is adaptive radiation?

• The process of species becoming extinct

• The evolution of species to use different parts of a niche

• The competition between species for resources

• The introduction of invasive species

What is a common characteristic of invasive species?

• They are native to the ecosystem

• They are always beneficial to the ecosystem

• They have many natural predators

• They often outcompete native species

How can invasive species be introduced to an ecosystem?

• They cannot be introduced

• Only unintentionally

• Only intentionally

• Both intentionally and unintentionally

What is primary succession?

• The process of species becoming extinct

• The gradual change of plant communities over time

• The introduction of invasive species

• The recovery of an ecosystem after a disturbance

What role do pioneer species play in primary succession?

• They compete with native species

• They are the last species to arrive

• They cause disturbances in the ecosystem

• They make the environment suitable for other species

What is secondary succession?

• The recovery of an ecosystem after a disturbance

• The introduction of invasive species

• The gradual change of plant communities over time

• The process of species becoming extinct

Why do ecosystems recover more quickly during secondary succession?

• Because the climate changes

• Because new species are introduced

• Because the soil and nutrients are already present

• Because there are no nutrients left