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National Coral Reef Monitoring Program: Benthic Images Collected from Stratified Random Sites (StRS) across American Samoa since 2015

Metadata Updated: August 19, 2022

The data described here are benthic habitat imagery (photographs) from benthic photo-quadrat surveys conducted along transects at stratified random sites by the Pacific Islands Fisheries Science Center (PIFSC) Ecosystem Sciences Division (ESD)--formerly the Coral Reef Ecosystem Division--as part of the NOAA National Coral Reef Monitoring Program (NCRMP). The photo-quadrat surveys are part of Rapid Ecological Assessment (REA) surveys for corals and fish conducted during ESD-led NCRMP missions to American Samoa from 2015 to 2018.

A stratified random sampling (StRS) design was employed to survey the coral reef ecosystems at each of the islands/atolls in American Samoa. 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 island, reef zone, and depth. Sampling effort was allocated based on strata area and sites were randomly located within strata. Sites were surveyed using photo-quadrats along transects to collect benthic imagery (30 photos per site) to ultimately produce estimates of relative abundance (percent cover), frequency of occurrence, benthic community taxonomic composition and relative generic richness.

The StRS design effectively reduces estimate variance through stratification using environmental covariates and by sampling more sites rather than sampling more transects at a site. Therefore, site-level estimates and site to site comparisons should be used with caution.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Date August 9, 2022
Metadata Created Date November 12, 2020
Metadata Updated Date August 19, 2022
Reference Date(s) 2016-12 (creation), 2019-03 (revision), 2019 (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from NMFS PIFSC

Additional Metadata

Resource Type Dataset
Metadata Date August 9, 2022
Metadata Created Date November 12, 2020
Metadata Updated Date August 19, 2022
Reference Date(s) 2016-12 (creation), 2019-03 (revision), 2019 (publication)
Responsible Party (Point of Contact, Custodian)
Contact Email
Guid gov.noaa.nmfs.inport:25247
Access Constraints Cite As: Pacific Islands Fisheries Science Center, [Date of Access]: National Coral Reef Monitoring Program: Benthic Images Collected from Stratified Random Sites (StRS) across American Samoa since 2015 [Data Date Range], https://www.fisheries.noaa.gov/inport/item/25247., Access Constraints: None | Use Constraints: Please cite PIFSC Ecosystem Sciences Division (ESD) when using the data. Example: Ecosystem Sciences Division; Pacific Islands Fisheries Science Center (2019). National Coral Reef Monitoring Program: Benthic Images from Stratified Random Sites (StRS) across American Samoa since 2015. NOAA's National Center for Environmental Information, https://www.fisheries.noaa.gov/inport/item/25247 | Distribution Liability: While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
Bbox East Long -168.1373351
Bbox North Lat -11.04525081
Bbox South Lat -14.56050273
Bbox West Long -171.0925737
Coupled Resource
Frequency Of Update asNeeded
Harvest Object Id cc30faf0-0170-49c8-97f7-3c8789a37cc0
Harvest Source Id c0beac72-5f43-4455-8c33-1b345fbc2dfe
Harvest Source Title NMFS PIFSC
Licence NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
Metadata Language eng
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-171.0925737, -14.56050273], [-168.1373351, -14.56050273], [-168.1373351, -11.04525081], [-171.0925737, -11.04525081], [-171.0925737, -14.56050273]]]}
Progress onGoing
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2015-02-15
Temporal Extent End 2015-03-26

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