Coral Reefs

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  • Coral reefs
    • Main ecological features
      • Coral nutrition - coral polyps feed in 3 ways.
        • Sticky hair-like cilia trap planktonic organisms
        • Stinging cells stab and kill planktonic organisms
        • Most food energy comes from symbiotic algae - provides over 90% food energy for shallow water corals
      • Abiotic conditions required
        • Low turbidity
        • Bright sunlight
        • Constant salinity
        • Warm, stable temps (25-29°C)
        • Hard substrate for polyp attachment.
    • Threats
      • Climate change
      • Pollution
      • Sediments
      • Fishing
      • Souvenirs and ornaments
      • Disease and predation
      • Physical damage
    • Importance to humans
      • Protection from erosion
      • Tourism
      • Climate control
      • Medicinal discoveries
      • Fisheries
    • Conservation efforts
      • Range of management practises
        • No-Take Zones
        • Sustainable development of ecotourism and fishing
        • Educating and training tourists
        • Control of land activities
        • Fixed mooring buoys over anchors
        • Control of coastal development. Safe disposal of waste
        • Untitled

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