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CORAL REEFS © 2016 Paul Billiet ODWS.

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Presentation on theme: "CORAL REEFS © 2016 Paul Billiet ODWS."— Presentation transcript:

1 CORAL REEFS © 2016 Paul Billiet ODWS

2 Tropical marine ecosystems
© 2016 Paul Billiet ODWS

3 Zones of high biodiversity
25% of marine species Royal Angelfish (Pygoplites diacanthus) © 2016 Paul Billiet ODWS

4 Coral organisms Zooxanthellae Coral polyp Coral polyps are Cnidarians
They build a shell of limestone They form mutualistic relationship with an alga Zooxanthellae. Photosynthetic products (O2, sugars etc) Zooxanthellae Coral polyp Support protection, NH3 and CO2 © 2016 Paul Billiet ODWS

5 Coral polyp structure © 2016 Paul Billiet ODWS

6 Under threat Cyanide fishing and bottom trawling Pollution
Sedimentation Coral mining Climate change and ocean acidification. Coral bleaching © 2016 Paul Billiet ODWS

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