Saturday, August 30, 2008

Negative impacts on sedimentation

Sedimentation of our Southern waters due to coastal development ( land reclaimation and construction) has reduced visibility from 10m in the 1960s to 2m or less today.

Sedimentation is like the haze. It blocks out sunlight and affects growth of our hard corals. Hard corals are made up of tiny animals called polyps that harbours microscopic algae. The algae produce nutrients using sunlight, through photosynthesis and shares this food with the polyps. Sedimentation also coats the polyps.
Posted by Cedric Chew

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