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General Information

File Identifier:	gov.noaa.nmfs.inport:25253
Metadata Date Stamp:	2020-04
Organization:	Pacific Islands Fisheries Science Center
Organization Role:	resourceProvider

Identification Information

Title:	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
Dataset Language:	eng; US
Abstract:	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 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 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.

Browse Graphic

Browse Graphic URL:	https://galapagosscience.files.wordpress.com/2014/12/chuki_niskin.jpg
Browse Graphic Caption:	Example of a SCUBA diver collecting a water sample underwater using a Niskin Bottle. Source: Galapagos Science Center, El-Nino Research Cruise News Blog, https://galapagosscience.wordpress.com/.
Browse Graphic Type:	JPG

Data Theme

Theme Topics:

Oceans and Estuaries

Spatial Domain

West Bounding Longitude:	144.6259204
South Bounding Latitude:	13.23108553
East Bounding Longitude:	145.832969
North Bounding Latitude:	20.54501178

Data Quality Information

Scope (quality information applies to):

Dataset

Data History:

PIFSC Ecosystem Sciences Division (ESD) assembles carbonate chemistry information from discrete seawater samples analyzed for two parameters: 1) Dissolved Inorganic Carbon (DIC), which in some literature is defined as Total Carbon (CT), and 2) Total Alkalinity (TA or AT). The carbonate system is influenced by seawater salinity, temperature, pressure, and the dissolved nutrients silicate (SiO44-) and phosphate (PO43-). All carbonate system collection and measurement methodologies follow the protocols accepted by the greater scientific community and outlined in Dickson et al. (2007)

Contact Information

Address:	1845 Wasp Blvd.
City:	Honolulu
State:	HI
Postal Code:	96818
Email:	hannah.barkley@noaa.gov

Distribution Information

Format Name:	csv (comma-separated values)
Distribution Link:	http://accession.nodc.noaa.gov/0131502
Distribution Link Function:	Download

Metadata Reference Information

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