Coral Reefs: Disturbances and Impacts

The video discusses various threats to coral reefs, highlighting the impact of both natural and anthropogenic factors. It explains how these threats have increased in frequency and intensity, reducing recovery time for coral reefs. The video categorizes threats into natural vs anthropogenic, acute vs chronic, and small scale vs large scale, providing examples for each. The importance of coral reefs to marine biodiversity and human livelihoods is emphasized, along with the need for conservation efforts.

What is the significance of coral reefs to marine life and humans?

• They are used for space exploration.

• They are a source of renewable energy.

• They provide shelter and food for marine species.

• They are a source of fresh water.

What is the impact of losing healthy coral reefs on marine species?

• It has no impact on marine species.

• It increases the population of marine species.

• It only affects land animals.

• It leads to the extinction of thousands of marine species.

How have human activities impacted coral reefs compared to natural events?

• Natural events are more frequent than human activities.

• Human activities have increased the frequency and intensity of damage.

• Natural events have caused irreversible damage.

• Human activities have slowed down the damage.

Which of the following is an example of an anthropogenic threat to coral reefs?

• Earthquakes

• Hurricanes

• Volcanic eruptions

• Pollution

What characterizes acute disturbances to coral reefs?

• They are long-term and low-level.

• They occur over centuries.

• They have a significant immediate impact.

• They are undetectable.

Which of the following is a chronic disturbance to coral reefs?

• Daily exposure to sewage

• A one-time anchor drop

• A single hurricane

• A volcanic eruption

What is the recovery time for coral reefs from acute disturbances?

• They recover immediately.

• They recover within hours.

• They never recover.

• They can recover with enough time.

What is a characteristic of small scale disturbances?

• They occur over a long period.

• They are localized and short-term.

• They affect a large area.

• They are always human-induced.

Which of the following is an example of a large scale disturbance?

• A local bleaching event

• A crown of thorns starfish outbreak

• A major oil spill

• A small coral disease spread

How do large scale disturbances affect coral reefs?

• They have no impact on reefs.

• They often prevent reefs from recovering.

• They allow reefs to recover quickly.

• They only affect the surface of reefs.