National Coral Reef Monitoring Program: Water Chemistry of the Coral Reefs in the Northwestern Hawaiian Islands from Water Samples collected in 2015 (NCEI Accession 0160330)

Water samples are collected and analyzed to assess spatial and temporal variation in the seawater carbonate systems of coral reef ecosystems in the Hawaiian and Mariana Archipelagos, American Samoa, and the Pacific Remote Island Areas as part of the NOAA National Coral Reef Monitoring Program (NCRMP).

Laboratory experiments reveal calcification rates of crustose coralline algae (CCA) are strongly correlated to seawater aragonite saturation state. Predictions of reduced coral calcification rates, due to ocean acidification, suggest that coral reef communities will undergo ecological phase shifts as calcifying organisms are negatively impacted by changing seawater chemistry.

The data described here are from water samples collected at existing, long-term monitoring sites during NOAA Pacific Islands Fisheries Science Center (PIFSC), Coral Reef Ecosystem Program (CREP) led NCRMP mission around the Northwestern Hawaiian Islands in 2015. Two water samples are typically collected from each site—one at the reef and one at the surface directly above the reef—and a third sample may also be collected approximately 1 km offshore from the site. The samples are processed by CREP and sent to NOAA Pacific Marine Environmental Laboratory (PMEL) to be analyzed for total alkalinity (TA) and dissolved inorganic carbon (DIC). From these constituents, alongside temperature, salinity, and depth data, other constituents of the seawater carbonate system can be calculated. These monitoring data provide a baseline for tracking reef carbonate system changes due to globally increasing levels of atmospheric carbon dioxide.

Data and Resources

Additional Info

Field Value
Last Updated September 19, 2017, 09:18
Created June 3, 2017, 02:46
access_constraints ["Cite as: Coral Reef Ecosystem Program, Pacific Islands Fisheries Science Center (2017). National Coral Reef Monitoring Program: Water Chemistry of the Coral Reefs in the Northwestern Hawaiian Islands from Water Samples collected in 2015 (NCEI Accession 0160330). Version 1.1. NOAA National Centers for Environmental Information. Dataset. [access date]", "NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose."]
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guid gov.noaa.nodc:0160330
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metadata-date 2017-08-08T18:43:02
metadata-language eng
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temporal-extent-begin 2015-07-31
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