Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures


Upwelling Areas as Possible Refugia for Reefs in Times of Rising SST? Further Evidence from the Caribbean and Indian Oceans

Event Name/Location

Proceedings 9th International Coral Reef Symposium, Bali, Indonesia

Document Type


Publication Date



Coral Reef, Upwelling, Reef Health, Sea Surface Temperature, Bahamas, South Africa, Coral Bleaching, Thermal Stress, ICRS9


A link seems to exist between upwelled cool water and coral health in Eleuthera, Cat Island (Bahamas) and Sodwana Bay (South Africa). In 1999, coral health and recovery from the 1998 bleaching was better in Cat Island than in Eleuthera (70% versus 44% of corals healthy). The southern Cat Island shelf is narrow and reefs are protected from bank waters by the island. Upwelling was observed in the field and on satellite imagery. The northern Eleuthera shelf is wide, and reefs are influenced by bank waters (downwelling of hyperpycnal waters). In hot years, when oceanic and bank waters get heated beyond bleaching threshold, upwelling protects Cat Island reefs. South African reefs are protected from high temperatures by annual upwelling in summer. Therefore, even during the 1998 world-wide bleaching event,


Please note that the document may contain typo errors due to the inability of the OCR (Optical Character Recognition) software to recognize and translate scientific terms found in the proceedings.

Additional Comments

In Moosa, M.K., S. Soemodihardjo, A. Soegiarto, K. Romimohtarto, A. Nontji, Soekarno and Suharsono (ed.). Proceedings of the Ninth International Coral Reef Symposium, Bali. 23-27 Oct. 2000. Vol. 1:315-321



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