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Protecting the Great Barrier Reef: Understanding, Threats, and Solutions

Dive into the biodiversity hotspot of the Great Barrier Reef, exploring its formation, ecosystem functions, human and natural threats, and the critical need for protection. Your engagement will be assessed based on skills, knowledge retention, and application of understanding through interactive presentations and activities.

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Protecting the Great Barrier Reef: Understanding, Threats, and Solutions

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  1. A threatened area CORAL REEFS

  2. The Great Barrier Reef: We will watch all three presentations. You will vote. Assessment: SKILLS: Individual grade for your section – slide content and presentation skills KNOWLEDGE: Individual grade for what you remember afterwards – worksheet. UNDERSTANDING AND APPLICATION: Exam question

  3. Where the Great Barrier Reef is Facts that let us know it is a biodiversity hotspot (1 person) How coral forms, How the GBR functions as an ecosystem – trophic levels, food web, energy, inputs, outputs, (all the key words up till now) (2 people) Human threats – tourism, farming, fishing, global warming (2 people) Natural threats – Predators – crown of thorns starfish, storms/cyclones/El Nino (1 person) Whoever finishes first: Conclusion – All of these threats combined – equilibrium – consequences for economy/coastal defence/biodiversity.

  4. Where the Great Barrier Reef isFacts that let us know it is a biodiversity hotspot • Length/area • No of species • Types of species • (Hard coral species, proportion soft coral out of world’s population) • No. of world’s threatened turtles, species of marine mammals

  5. Human threats – tourism, farming, fishing, global warming • Tourism • Over fishing • Sea floor trawling • Commercial/subsistence farming • Sedimentation • Mangroves • Sea pollution – causes • Coral bleaching

  6. Natural threats – Predators – crown of thorns starfish, storms/cyclones/El Nino • Diseases • Predators • Crown of thorns starfish • Storms • Cyclones • El Nino

  7. Conclusion • Can withstand one threat • Combined threats a problem • Irreversible damage • Breakdown of the reef system • Critical threshold reached – even if threats stop, damage cannot be reversed and ecosystem won’t recover • Loss of biodiversity • New equilibrium established – not a hotspot anymore

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