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Nutrient and water chemistry data of Aua Reef in American Samoa from samples collected along a water quality gradient between 2022-09-13 to 2022-09-23 (NCEI Accession 0282182)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: January 29, 2026 | Last Modified: 2023-09-19T00:00:00.000+00:00
The data described here are from water samples collected during NOAA Pacific Islands Fisheries Science Center (PIFSC), Ecosystem Sciences Division (ESD) led fly-in Mission to Aua, American Samoa from September 8-29, 2022. Five seawater samples were collected at each site, with a total of 18 sites established across a locally known water quality gradient. The seawater samples were processed in the field, then sent to the University of Hawaii at Manoa's SOEST S-Lab to be analyzed for water chemistry and nutrients. This water quality and chemistry data includes chlorophyll-a, dissolved nitrogen, nitrate, nitrite ammonia, dissolved phosphorus, phosphate, silicate, total suspended solids, and seawater pH. The analysis of water samples was one of several surveys conducted at the same sites across Aua reef in September 2022. Other surveys are described separately and listed in the 'Related Items' section of the InPort record; these include surveys of coral demography, benthic imagery/benthic cover, CTD casts, non-coral communities, and coral demography.

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0282182 AMMONIA (NH3) CHLOROPHYLL A nitrate + nitrite content (concentration) pH phosphate SALINITY silicate suspended solids Total Dissolved Nitrogen (TDN) TOTAL PHOSPHORUS WATER TEMPERATURE CTD laboratory analysis Niskin bottle pH sensor in situ laboratory analyses CHARTERED VESSEL NOAA Pacific Islands Fisheries Science Center NOAA Pacific Islands Fisheries Science Center Coral Reef Conservation Program (CRCP) CORAL REEF STUDIES South Pacific Ocean oceanography Aua CRED CREP Climate Change Coral Reef Ecosystem Division Coral Reef Ecosystem Program ESD Ecosystem Sciences Division LBSP PIFSC Pacific Islands Fisheries Science Center land-based source pollution nutrients water chemistry DOC/NOAA/NMFS > National Marine Fisheries Service, NOAA, U.S. Department of Commerce 31303 Linking watershed management actions to reef health in American Samoa Numeric Data Sets > Water Quality EARTH SCIENCE > Biosphere > Aquatic Habitat > Reef Habitat EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs EARTH SCIENCE > Oceans > Ocean Chemistry > Chemistry Monitoring and Assessment EARTH SCIENCE > Oceans > Ocean Chemistry > Ocean Acidification EARTH SCIENCE > Oceans > Ocean Chemistry > pH EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > AMMONIA EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CHLOROPHYLL EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRATE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRITE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITROGEN EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PHOSPHATE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > SILICATE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > SUSPENDED SOLIDS EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY CTD > Conductivity, Temperature, Depth NISKIN BOTTLES PH METERS > PH METERS COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > American Samoa (14S170W0000) COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Tutuila Island (14S170W0016) OCEAN BASIN > Pacific Ocean > American Samoa > American Samoa (14S170W0000) OCEAN BASIN > Pacific Ocean > American Samoa > Tutuila Island (14S170W0016) OCEAN > PACIFIC OCEAN > CENTRAL PACIFIC OCEAN > AMERICAN SAMOA OCEAN > PACIFIC OCEAN > SOUTH PACIFIC OCEAN 80W7F7

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