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Dataset Overview | National Centers for Environmental Information (NCEI)

Benthic Surveys in Vatia, American Samoa: benthic images collected during belt transect surveys from 2020-01-23 to 2020-01-29 (NCEI Accession 0259494)

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This data package includes the source imagery of a benthic cover analysis for surveys performed in 2020 by the NOAA Ecosystem Sciences Division (ESD) in Vatia, American Samoa. The imagery described here was collected during belt transect surveys of coral demography by the ESD according to protocols established by the NOAA National Coral Reef Monitoring Program (NCRMP).

In 2020 the survey implemented a one-stage stratified random sampling (StRS) design. Thirty images were collected at 24 stratified randomly selected sites in Vatia Bay. The survey domain encompassed the majority of the mapped area of reef and hard bottom habitats in the 0–30 m depth range. The stratification scheme included cardinal position (i.e., north and south) and depth (i.e., shallow: >0–6 m and mid-depth: >6–18 m). Sampling effort allocation was determined based on strata area and sites randomly located within strata. The StRS design effectively reduces estimate variance through stratification using environmental covariates and by sampling more sites rather than more transects per site. Therefore, site-to-site comparisons should proceed with caution.
  • Cite as: Ecosystem Sciences Division, Pacific Islands Fisheries Science Center (2022). Benthic Surveys in Vatia, American Samoa: benthic images collected during belt transect surveys from 2020-01-23 to 2020-01-29 (NCEI Accession 0259494). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0259494. Accessed [date].
gov.noaa.nodc:0259494
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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 2020-01-23 to 2020-01-29
Spatial Bounding Box Coordinates
West: -170.674412
East: -170.667963
South: -14.249853
North: -14.24367
Spatial Coverage Map
General Documentation
Associated Resources
  • Pacific Islands Fisheries Science Center, 2022: Benthic Surveys in Vatia, American Samoa since 2015: benthic images collected during belt transect surveys in 2015 and 2020, https://www.fisheries.noaa.gov/inport/item/31196.
  • Status and Trends Assessment of Benthic Coral Reef Communities in Vatia Bay, American Samoa, 2015-2020
  • Ecosystem Sciences Division, Pacific Islands Fisheries Science Center (2022). Benthic Surveys in Vatia, American Samoa: benthic cover derived from analysis of benthic images collected during belt transect surveys of coral demography from 2020-01-23 to 2020-01-29 (NCEI Accession 0264809). NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0264809.
  • Whitall, David; Curtis, Meagan; Mason, Andrew; Vargas-Angel, Bernardo. Excess Nutrients in Vatia Bay, American Samoa: Spatiotemporal Variability, Source Identification and Impact on Coral Reef Ecosystems. NOAA technical memorandum NOS NCCOS; 266. 2019. https://doi.org/10.25923/j8cp-x570
Publication Dates
  • publication: 2022-09-23
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: B7NFD6
Purpose These data were collected during benthic surveys undertaken in Vatia Bay to establish a comprehensive baseline for benthic composition and are part of a broader NOAA Coral Reef Conservation Program (CRCP) funded project led by NCCOS. These efforts feed into the higher-level CRCP objectives by establishing an in-situ tracking system to assess the effects of management and mitigation strategies and activities in the target watersheds to reduce land-based sources of pollution.
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 (2022). Benthic Surveys in Vatia, American Samoa: benthic images collected during belt transect surveys from 2020-01-23 to 2020-01-29 (NCEI Accession 0259494). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0259494. Accessed [date].
Cited Authors
Principal Investigators
Contributors
Resource Providers
Points of Contact
Publishers
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
  • Visual Images > Corals
  • Visual Images > Habitats
CoRIS Theme Thesaurus
  • EARTH SCIENCE > Biosphere > Aquatic Habitat > Benthic Habitat
  • EARTH SCIENCE > Biosphere > Aquatic Habitat > Reef Habitat
  • EARTH SCIENCE > Biosphere > Zoology > Corals
  • EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment
  • EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Baseline studies
  • EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Benthos Analysis > Quadrat Monitoring
  • EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Benthos Analysis > Quadrat Monitoring > Photograph Analysis
  • EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Benthos Analysis > Transect Monitoring > Belt Transect
  • EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > In Situ Biological
  • EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Photographic Analysis
  • EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Rapid Assessment Studies
  • EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs
  • EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology
  • EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Benthic biology
  • EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral reef ecology > Coral cover
  • EARTH SCIENCE > Oceans > Marine Biology > Coral
  • EARTH SCIENCE > Oceans > Marine Biology > Coral Communities
Global Change Master Directory (GCMD) Science Keywords
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Contributing Data Centers
  • CRED
  • CREP
  • Coral Reef Ecosystem Division
  • Coral Reef Ecosystem Program
  • ESD
  • Ecosystem Sciences Division
  • PIFSC
  • Pacific Islands Fisheries Science Center
Global Change Master Directory (GCMD) Data Center Keywords
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 > Tutuila Island > Vatia Bay (14S170W0028)
  • OCEAN BASIN > Pacific Ocean > American Samoa > American Samoa (14S170W0000)
  • OCEAN BASIN > Pacific Ocean > Tutuila Island > Vatia Bay (14S170W0028)
Global Change Master Directory (GCMD) Location Keywords Provider Place Keywords
  • Vatia Bay
Project keywords NODC PROJECT NAMES THESAURUS CRCP Project
  • 31090
  • 31259
  • Eutrophication Impacts on Coral Ecosystem Health in Vatia, American Samoa
  • Status and trends assessment for LBSP impacts on reef communities in Faga'alu Bay and Vatia Bay
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Ecosystem Sciences Division, Pacific Islands Fisheries Science Center (2022). Benthic Surveys in Vatia, American Samoa: benthic images collected during belt transect surveys from 2020-01-23 to 2020-01-29 (NCEI Accession 0259494). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0259494. 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.
Fees
  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Processing Steps
  • 2022-09-23T13:46:40Z - NCEI Accession 0259494 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: PHOTOQUADRAT IMAGES (measured); Units: unitless; Observation Category: in situ; Sampling Instrument: camera; Sampling and Analyzing Method: Still photographs were collected to record the benthic community composition with a high-resolution digital camera mounted on a pole. Thirty photographs were taken every meter from the 1 m to the 30 m.; Data Quality Method: The photos are reviewed by the diver for accuracy and usability. To ensure consistency, images were color corrected using Adobe Lightroom if it appeared that the camera they were taken from was not properly white balanced in the field. Typically, 30 photographs are collected per site; however, there may be instances in which camera issues, survey conditions, or image quality results in fewer than the standard 30 photos per site. Survey protocols followed the National Coral Reef Monitoring Program methodologies historically implemented by NOAA's Ecosystem Sciences Division..
Acquisition Information (collection)
Instrument
  • camera
Last Modified: 2023-04-30T14:20:23Z
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