What is a coast and its importance - Iczmpwb.org
What is a coast and its importance - Iczmpwb.org
What is a coast and its importance - Iczmpwb.org
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Threats to Coral Reefs of A & N Isl<strong>and</strong>s<br />
Natural Threats<br />
• R<strong>is</strong>e in surface seawater temperature (El Nino) triggered the coral bleaching<br />
• Sedimentation due to l<strong>and</strong> <strong>and</strong> river run off increasing the turbidity of the<br />
water column which prevents the symbiotic algae from capturing sunlight,<br />
which <strong>is</strong> the coral’s primary source of energy <strong>and</strong> nutrition.<br />
• Coral d<strong>is</strong>eases caused by microbes leads to the mortality of corals<br />
• Earthquakes <strong>and</strong> tidal waves (tsunami) damages the reefs<br />
• Predation by ‘Crown-of-Thorn ‘ Sea star Acanthaster planci<br />
Anthropogenic Threats<br />
• Marine Pollution caused by domestic <strong>and</strong> municipal sewages etc.<br />
• Oil pollution <strong>and</strong> oil spillages<br />
• Pesticide pollution due to agricultural activities<br />
• Ind<strong>is</strong>criminate f<strong>is</strong>hing in the coral reef zone by operating trawl <strong>and</strong> gill nets<br />
• Damages due to anchorage of vessels<br />
• Un<strong>org</strong>anized tour<strong>is</strong>m
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