Description

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), Ecosystem Sciences Division (ESD) led NCRMP missions around the American Samoa and the Pacific Remote Island Areas in 2012, the Hawaiian Archipelago in 2013, and Wake Island and the Mariana Archipelago in 2014. Two water samples are typically collected from each siteâone at the reef and one at the surface directly above the reefâand a third sample may also be collected approximately 1 km offshore from the site. The samples are processed by ESD 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.

Resources

Format	Description	Link
0	Discrete water sample collection protocol, established by the NOAA Pacific Marine Environmental Laboratory (PMEL).	https://accession.nodc.noaa.gov/0157633
0	Dickson et al. (2007) protocols, Guide to best practices for ocean CO2 measurements. PICES Special Publication 3, 191 pp. ("Guide" in one PDF file).	https://accession.nodc.noaa.gov/0157633
0	View the complete metadata record on InPort for more information about this dataset.	https://www.fisheries.noaa.gov/inport/item/25253
0	Pacific Island Fisheries Science Center homepage	https://www.pifsc.noaa.gov
21	Guide to Best Practices for Ocean CO2 Measurements (Dickson et al, 2007). The "Guide" all in one PDF is available on this website as well.	https://cdiac.ornl.gov/oceans/Handbook_2007.html
0	NOAA National Coral Reef Monitoring Program website.	https://www.coris.noaa.gov/monitoring/
0	Pacific Islands Fisheries Science Center, Ecosystem Sciences Division (ESD) website, Ocean Acidification page.	https://www.pifsc.noaa.gov/cred/ocean_acidification.php
33	NOAA Data Management Plan for this record on InPort.	https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/pifsc/dmp/pdf/25253.pdf
0	The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords.	https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords
0	Data dictionary for the water chemistry dataset described herein, which includes a description of each column and it's domain values contained in the CSV file.	https://accession.nodc.noaa.gov/0131502
0	Pacific Islands Fisheries Science Center, Ecosystem Sciences Division (ESD) website, Pacific Reef Assessment and Monitoring Program (Pacific RAMP).	https://www.pifsc.noaa.gov/cred/pacific_ramp.php
0	Water quality data from nearly 500 water samples collected by the PIFSC Ecosystem Sciences Division at 273 sites across the U.S.-affiliated Pacific Islands, including the Hawaiian and Mariana Archipelagos, American Samoa, and the Pacific Remote Island Areas between 2012 and 2014. The 2013 and 2014 data overlap with the following NCRMP accessions: Hawaiian Archipelago 2013: Accession 0157714, https://www.fisheries.noaa.gov/inport/item/36067 Wake Island, Pacific Remote Island Areas 2014: Accession 0159171 https://www.fisheries.noaa.gov/inport/item/36065 Mariana Archipelago 2014: Accession 0157715 https://www.fisheries.noaa.gov/inport/item/36066	https://accession.nodc.noaa.gov/0131502

Pacific Reef Assessment and Monitoring Program: Water Chemistry of the Coral Reefs across the U.S.-affiliated Pacific Islands from Water Samples collected from 2012 to 2014

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