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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)

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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.
  • Cite as: Ecosystem Sciences Division; Pacific Islands Fisheries Science Center (2023). 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). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0282182. Accessed [date].
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Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 2022-09-13 to 2022-09-23
Spatial Bounding Box Coordinates
West: -170.669
East: -170.665
South: -14.2881
North: -14.2717
Spatial Coverage Map
General Documentation
Associated Resources
  • Nutrient and Water Chemistry Data of Aua Reef in America Samoa From Samples Collected Along a Water Quality Gradient Between 2022-09-13 to 2022-09-23.
Publication Dates
  • publication: 2023-09-19
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Supplemental Information
Submission Package ID: 80W7F7
Purpose Land-based sources of pollution negatively impact reef communities. Our goal here was to collect water samples and analyze them for their nutrients and chemical properties. We intend to assess whether or not a water quality gradient exists in the coral reefs of Aua. The focal point of the mission was to establish a biological and water quality and carbonate chemistry baseline for Aua reef. This work was aimed at identifying measurable spatial differences in the structure and composition of the benthic and coral community at Aua that can be explained by measurable spatial patterns of water quality (nutrients and sediments) and water chemistry (pH). This work is of fundamental importance for the development of the Aua Watershed Management Plan, and will enable Federal and jurisdictional resource managers to more effectively assess the effectiveness of watershed management actions reducing land-based pollution and impacts to the adjacent coral reef ecosystems. Information: NOAA Coral Reef Conservation Program (CRCP) funds research under the Land-Based Sources of Pollution. This mission (Project number 31303) sought out to examine the impacts of LBSP on reef communities (coral and non-coral) in Aua, a high priority watershed in American Samoa. This mission builds on prior assessment and monitoring surveys of benthic reef communities conducted in Faga'alu and Vatia bays in 2012, 2015, and 2022 to address National and Jurisdictional goals to reduce the impacts of LBSP in local priority watersheds. Together with periodic monitoring, this coral reef community baseline for Aua reef will allow scientists to quantify temporal changes in the condition and integrity and enable Jurisdictional and Federal resource managers to make informed decisions pertaining to the protection and preservation of critical habitats. The overall effort required to evaluate the effectiveness of management strategies is significant and requires close coordination between local and Federal efforts.
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: Ecosystem Sciences Division; Pacific Islands Fisheries Science Center (2023). 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). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0282182. Accessed [date].
Cited Authors
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Acknowledgments
  • Related Funding Agency: US DOC; NOAA; NOS; Coral Reef Conservation Program
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
CoRIS Discovery Thesaurus
  • Numeric Data Sets > Water Quality
CoRIS Theme Thesaurus
  • 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
Global Change Master Directory (GCMD) Science Keywords
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Global Change Master Directory (GCMD) Data Center Keywords Submitter Data Center Keywords
  • 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
Platform keywords NODC PLATFORM NAMES THESAURUS
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
Place keywords NODC SEA AREA NAMES THESAURUS CoRIS Place Thesaurus
  • 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)
Global Change Master Directory (GCMD) Location Keywords
Project keywords NODC PROJECT NAMES THESAURUS CRCP Project
  • 31303
  • National Coral Reef Monitoring Program
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Ecosystem Sciences Division; Pacific Islands Fisheries Science Center (2023). 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). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0282182. Accessed [date].
Access Constraints
  • Use liability: 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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Lineage information for: dataset
Processing Steps
  • 2023-09-19T21:42:21Z - NCEI Accession 0282182 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: pH (measured); Units: pH; Observation Category: in situ; Sampling Instrument: pH sensors; Sampling and Analyzing Method: Handheld YSI pH sensor was used at time of seawater sample collection.
  • Parameter or Variable: suspended solids (calculated); Units: mg/L; Observation Category: laboratory analysis; Sampling Instrument: Niskin bottle; Sampling and Analyzing Method: Volumes of seawater collected with Niskin bottle, then filtered, dried and weighed in laboratory..
  • Parameter or Variable: CHLOROPHYLL A (calculated); Units: microgram/liter; Observation Category: laboratory analysis; Sampling Instrument: Niskin bottle; Sampling and Analyzing Method: Five water samples were collected at each of 18 sites along the water quality gradient in Aua, American Samoa and sent to SOEST-S lab for analysis.; Data Quality Method: Niskin bottle was used to collect seawater at reef depth, filtered and sent to SOEST-S lab for analysis..
  • Parameter or Variable: SALINITY (measured); Units: practical salinity unit; Observation Category: in situ; Sampling Instrument: CTD; Sampling and Analyzing Method: Following a 1 minute soak, the CTD was lowered in profiling mode at an even pace (descent rate ~0.5 to 0.75 meters per second) to a depth of 0-5 m at 18 sites along the water quality gradient in Aua, American Samoa established by the NOAA Fisheries, Ecosystem Sciences Division. Salinity and temperature from CTD cast at same time and depth as water sample (at reef depth) was incorporated into this dataset..
  • Parameter or Variable: WATER TEMPERATURE (measured); Units: degrees Celsius; Observation Category: in situ; Sampling Instrument: CTD; Sampling and Analyzing Method: Following a 1 minute soak, the CTD was lowered in profiling mode at an even pace (descent rate ~0.5 to 0.75 meters per second) to a depth of 0-5 m at 18 sites along the water quality gradient in Aua, American Samoa established by the NOAA Fisheries, Ecosystem Sciences Division. Salinity and temperature from CTD cast at same time and depth as water sample (at reef depth) was incorporated into this dataset.; Data Quality Method: RBR Concerto3 CTD sensor: Temperature - measurement range: -5-35 deg C; accuracy: +/-0.002 deg C; stability: 0.002 deg C per year; resolution: 0.00005 deg C;.
  • Parameter or Variable: Total Dissolved Nitrogen (TDN) (calculated); Units: micromole/liter; Observation Category: laboratory analysis; Sampling Instrument: laboratory analysis; Sampling and Analyzing Method: Niskin bottle was used to collect seawater at reef depth, filtered and sent to SOEST-S lab for analysis..
  • Parameter or Variable: TOTAL PHOSPHORUS (calculated); Units: micromole/liter; Observation Category: laboratory analysis; Sampling Instrument: laboratory analysis; Sampling and Analyzing Method: Niskin bottle was used to collect seawater at reef depth, filtered and sent to SOEST-S lab for analysis..
  • Parameter or Variable: silicate (calculated); Units: micromole/liter; Observation Category: laboratory analysis; Sampling Instrument: laboratory analysis; Sampling and Analyzing Method: Niskin bottle was used to collect seawater at reef depth, filtered and sent to SOEST-S lab for analysis..
  • Parameter or Variable: nitrate + nitrite content (concentration) (calculated); Units: micromole/liter; Observation Category: laboratory analysis; Sampling Instrument: laboratory analysis; Sampling and Analyzing Method: Niskin bottle was used to collect seawater at reef depth, filtered and sent to SOEST-S lab for analysis..
  • Parameter or Variable: AMMONIA (NH3) (calculated); Units: micromole/liter; Observation Category: laboratory analysis; Sampling Instrument: laboratory analysis; Sampling and Analyzing Method: Niskin bottle was used to collect seawater at reef depth, filtered and sent to SOEST-S lab for analysis..
Acquisition Information (collection)
Instrument
  • CTD
  • laboratory analysis
  • Niskin bottle
  • pH sensor
Platform
  • CHARTERED VESSEL
Last Modified: 2024-02-21T13:44:27Z
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