What factors affect the chemistry of coral reef habitats in the South Pacific?

[Nebula]

I am wondering if anyone can give me some information on the chemistry of coral reef habitats particularly those in the south pacific. In general I am looking for information concerning temperature, salinity ranges as well as pH and local dissolved gasses and their corresponding abundance.

 

[rdjon]

Just spotted this topic! I'm doing a PhD modeling carbonate platforms, and I would recommend looking up papers by Buddemier (sp?), Keyplass and Chappell. These should be starting points for you research. Unfortunately, I'm using the Bahamas as a test bed, not the Pacific, so I can't give you any specific details.

 

[ravenprp]

The chemistry of coral reef habitats is a complex and dynamic system that plays a crucial role in the survival and growth of coral reefs. Coral reefs are found in tropical and subtropical regions, including the South Pacific, and are known for their high biodiversity and productivity.

One of the key factors that influence the chemistry of coral reefs is temperature. Coral reefs thrive in warm waters with an average temperature range of 23-29°C (73-84°F). This temperature range allows for optimal growth and development of the symbiotic algae, called zooxanthellae, that live within the coral tissues and provide them with essential nutrients.

Another important aspect of coral reef chemistry is salinity. The salinity, or saltiness, of the water is crucial for maintaining the delicate balance of the reef ecosystem. Coral reefs require a stable salinity range of 32-42 parts per thousand (ppt) for optimal growth and reproduction. Changes in salinity can stress corals and make them more susceptible to disease and bleaching.

The pH of the water surrounding coral reefs is also a critical factor. Coral reefs thrive in slightly alkaline conditions, with a pH range of 7.8-8.4. This pH range is necessary for the formation of calcium carbonate, the building blocks of coral skeletons. However, increasing levels of carbon dioxide in the atmosphere are causing ocean acidification, which can lower the pH of the water and make it more difficult for corals to build their skeletons.

In terms of dissolved gases, the most important for coral reefs is oxygen. Oxygen is essential for the survival of coral reefs and the organisms that live within them. The abundance of dissolved oxygen in reef waters is affected by factors such as temperature, salinity, and photosynthesis by the zooxanthellae. In addition, the availability of other dissolved gases, such as carbon dioxide and nitrogen, can also impact the health of coral reefs.

Overall, the chemistry of coral reef habitats in the South Pacific is a delicate and intricate balance that is essential for the survival of these diverse and important ecosystems. Monitoring and understanding the various chemical parameters, such as temperature, salinity, pH, and dissolved gases, is crucial for the conservation and management of coral reefs in this region.