How tiger sharks affect Shark Bay’s ecosystem

The Shark Bay ecosystem research project, initiated nearly 20 years ago, focuses on understanding the role of Tiger sharks as top predators. The study involves tagging and tracking sharks to observe their habitat preferences and impact on other species like dolphins, dugongs, and sea turtles. Researchers use cages to study seagrass growth in areas with varying shark presence, revealing that Tiger sharks influence the distribution and health of seagrass beds. The findings highlight the critical role of Tiger sharks in maintaining ecosystem balance, as their presence deters grazers, allowing seagrass to thrive, which benefits the entire food chain.

What was the initial focus of the Shark Bay ecosystem research project?

• Sea turtles

• Seagrass

• Dolphins

• Tiger sharks

Where is the Shark Bay ecosystem research project conducted?

• Western Australia

• Northern Australia

• Southern Australia

• Eastern Australia

What method is used to track the tiger sharks in the study?

• Tagging and tracking devices

• Underwater drones

• Satellite imaging

• Sonar technology

How do tiger sharks influence the seagrass beds in Shark Bay?

• By increasing water temperature

• By directly feeding on seagrass

• By reducing water salinity

• By keeping large grazers away

What happens to the seagrass in areas where grazers avoid due to tiger sharks?

• It becomes lush

• It dies off

• It remains unchanged

• It becomes sparse