Ecosystem Dynamics: Exploring Biotic And Abiotic Influences

The video tutorial covers biotic and abiotic factors in ecosystems. Biotic factors include living elements like predation, competition, and disease, while abiotic factors encompass non-living elements such as temperature, light, and moisture. The video explains how these factors influence ecosystems and provides a case study of clownfish and sea anemones to illustrate these concepts. It concludes with typical questions and the impact of changes in these factors.

What are biotic factors?

• Non-living parts of the environment

• Living factors that affect organisms

• Chemical elements in the soil

• Weather patterns

Which of the following is an example of a biotic factor?

• Temperature

• Predation

• Light intensity

• Soil pH

What are abiotic factors?

• Living factors that affect organisms

• Non-living parts of the environment

• Processes like predation

• Competition for resources

Which of the following is NOT an abiotic factor?

• Light intensity

• Soil mineral content

• Competition for food

• Carbon dioxide concentration

How can an increase in temperature affect plant growth?

• Have no effect on photosynthesis

• Increase the rate of photosynthesis

• Stop photosynthesis completely

• Decrease the rate of photosynthesis

What might animals do if the temperature increases?

• Decrease their growth rate

• Search for food more often

• Use more energy for growth

• Spend more energy staying warm

In the clownfish example, what is a biotic factor affecting the clownfish?

• Oxygen concentration

• Sea anemone

• Salt levels

• Water temperature

Which abiotic factor could affect the sea anemone, indirectly impacting the clownfish?

• Disease burden

• Light intensity

• Competition for habitat

• Predation by bigger fish

What could be a consequence of increased acidity in water for clownfish?

• Altered oxygen levels

• No effect on clownfish

• Improved habitat conditions

• Increased predation

Why is it important to understand both biotic and abiotic factors in an ecosystem?

• To predict weather patterns

• To understand the complete ecosystem dynamics

• To identify chemical elements

• To measure soil pH