Ecosystem Dynamics and Functions

The video explores ecosystems, which include all organisms and abiotic factors in an area. It discusses energy flow and nutrient cycling, highlighting the roles of photosynthesis, decomposers, and disturbances. Ecosystems are influenced by external factors like climate and internal factors like species interactions. The video also covers methods for studying ecosystems and understanding the biosphere.

What does an ecosystem consist of?

• Only the organisms in an area

• Only the abiotic factors in an area

• Both the organisms and abiotic factors in an area

• Only the physical phenomena in an area

What is the primary focus of ecosystem ecologists?

• Studying individual organisms

• Analyzing the flow of energy and recycling of nutrients

• Examining only abiotic factors

• Monitoring weather patterns

Which of the following is NOT a broad category of ecosystems?

• Terrestrial

• Ocean water

• Desert

• Freshwater

How does energy enter an ecosystem?

• Through nutrient cycling

• Through decomposition

• Through photosynthesis

• Through animal consumption

What role do decomposers play in an ecosystem?

• They compete with plants for nutrients

• They break down dead organic matter

• They consume plant tissue

• They produce energy through photosynthesis

What is the process called when nutrients are converted back into a form usable by plants and microbes?

• Photosynthesis

• Decomposition

• Nutrient cycling

• Erosion

Which of the following is an example of a disturbance that can release energy and nutrients from an ecosystem?

• Wildfires

• Shading

• Root competition

• Photosynthesis

Which of the following is an external factor controlling ecosystems?

• Decomposition

• Root competition

• Climate

• Shading

What is the term for an ecosystem's ability to remain close to its ideal state despite disturbances?

• Resilience

• Resistance

• Recovery

• Equilibrium

Which method is NOT used to study ecosystems?

• Ignoring disturbances

• Theoretical studies

• Monitoring over long periods

• Direct experimentation