Q17.Assess the impact of global warming on the coral life system with examples.

Coral reefs, vital marine ecosystems, are severely threatened by global warming, which intensifies ocean heat and alters ocean chemistry.

Mechanism of Impact

Global warming primarily impacts corals through rising sea surface temperatures and ocean acidification. Increased atmospheric CO2 absorption by oceans forms carbonic acid, reducing pH.

Specific Impacts and Examples

• Elevated temperatures cause coral bleaching, expelling symbiotic algae and leading to widespread mortality, exemplified by the Great Barrier Reef.
• Ocean acidification inhibits calcification, hindering coral growth and structural integrity.
• Weakened corals become highly susceptible to diseases, storms, and other environmental stressors.

Broader Ecological and Socio-economic Consequences

• Loss of reefs devastates marine biodiversity, impacting species reliant on these habitats.
• It severely affects fisheries, a crucial food source and livelihood.
• Coastal protection is compromised, increasing vulnerability to erosion and storm surges.

The cumulative impact of global warming poses an existential threat to coral reef systems globally, necessitating urgent climate action and conservation.