Structure from Motion (SfM) Coral (Adult and Juvenile) Annotations derived from Stratified Random Site (StRS) Imagery across American Samoa in 2023 for methods comparison (NCEI Accession 0308012)

Description

Coral adult and juvenile coral colony demographic data described in this dataset are derived from the GIS analysis of benthic photomosaic imagery collected across American Samoa in 2023 for a methods comparison with in situ diver data. Official National Coral Reef Monitoring Program (NCRMP) coral demographic data is archived separately under NCEI Accession 0298217. The source imagery was collected using a Structure from Motion (SfM) approach during in-water surveys conducted by divers. The SfM imagery is archived separately, and can be accessed via InPort record 63095. Data was collected during the NOAA Pacific Islands Fisheries Science Center (PIFSC) and Ecosystem Sciences Division (ESD) led NCRMP mission across the American Samoa from 2023-03-30 to 2023-04-18. This adds to previously archived data from 2019 and 2022 for methods comparison, described on Inport metadata record. The SfM surveys are part of the Rapid Ecological Assessment (REA) surveys for corals and fish conducted during ESD-led NCRMP missions. Surveys were conducted at sites randomly stratified across sub-island sectors and three depth strata (shallow: 0-6m, mid: 6-18m and deep: >18m). These sites represent a broad range of depths (1-25 m), habitat types (aggregate reef, patch reef, pavement, rock and boulder and rubble), coral cover, and diving conditions. Allocation of sampling effort was proportional to strata area and variance in coral density. 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. During each survey, an 18m transect line was deployed along the isobath and photographed using underwater cameras while swimming in a back and forth swim pattern for later processing using an SfM approach. At depths of 1-20 m, SfM surveys were conducted over a 3 x 20m area and at depths > 20m, a 3 x 13m area was surveyed, both with the transect running down the middle of the survey area. The photographs were processed using Agisoft Metashape software to generate orthomosaic images that were analyzed in ArcGIS for juvenile and adult coral colony demographic metrics. Data was collected for each site within four 2.5m2 segments, each 1m wide, along the transect (at 0-2.5m, 5-7.5m, 10-12.5m, and 15-17.5m). At deeper sites where a 3 x 13m area was surveyed, only the first three segments were analyzed in ArcGIS. For each adult coral colony (> 5cm in diameter), maximum diameter, ID (to lowest taxonomic level), and estimated percent old mortality were recorded. Bleaching extent (% of living tissue with reduced pigmentation) and severity were also recorded. Juvenile coral colonies (0.7 to 5cm maximum diameter) were recorded within the first 1 m2 of the first 3 segments. For juvenile colonies, only ID and maximum diameter were recorded.

Resources

Name Format Description Link
0 Navigate directly to the URL for a descriptive web page with download links. https://doi.org/10.25921/ggt2-sk81
0 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/archive/accession/oas/308012
0 Navigate directly to the URL for data access and direct download. https://www.ncei.noaa.gov/archive/accession/download/308012
0 These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0241/0308012/
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
0 Institution web page https://www.pifsc.noaa.gov/ecosystem_sciences/
0 Institution web page https://www.pifsc.noaa.gov/ecosystem_sciences/
0 Institution web page https://www.pifsc.noaa.gov/ecosystem_sciences/
0 Institution web page https://www.pifsc.noaa.gov/ecosystem_sciences/
0 Institution web page https://www.pifsc.noaa.gov/ecosystem_sciences/
0 Institution web page https://www.pifsc.noaa.gov/ecosystem_sciences/
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 InPort Metadata Record https://www.fisheries.noaa.gov/inport/item/63097
0 NOAA Technical Memorandum https://doi.org/10.25923/8r7f-t404
0 NOAA Technical Memorandum https://doi.org/10.25923/w1k2-0y84
0 NOAA Technical Memorandum https://doi.org/10.25923/h2q8-jv47
0 Journal Article https://doi.org/10.3389/fmars.2021.647943
0 Related NCEI data accession https://www.ncei.noaa.gov/archive/accession/0253468
0 Institution web page https://www.pifsc.noaa.gov/ecosystem_sciences/
0 Related NCEI data accession https://www.ncei.noaa.gov/archive/accession/0280938
0 Institution web page https://www.pifsc.noaa.gov/ecosystem_sciences/
0 Related NCEI data accession https://doi.org/10.25921/5qsa-z057
0 Institution web page https://www.pifsc.noaa.gov/ecosystem_sciences/
0 InPort Metadata Record for related SfM imagery https://www.fisheries.noaa.gov/inport/item/63095
0 Navigate directly to the URL for a descriptive web page with download links. https://doi.org/10.25921/ggt2-sk81
0 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/archive/accession/oas/308012
0 Navigate directly to the URL for data access and direct download. https://www.ncei.noaa.gov/archive/accession/download/308012
0 These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0241/0308012/
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
0 Institution web page https://www.pifsc.noaa.gov/ecosystem_sciences/
0 Institution web page https://www.pifsc.noaa.gov/ecosystem_sciences/
0 Institution web page https://www.pifsc.noaa.gov/ecosystem_sciences/
0 Institution web page https://www.pifsc.noaa.gov/ecosystem_sciences/
0 Institution web page https://www.pifsc.noaa.gov/ecosystem_sciences/
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 InPort Metadata Record https://www.fisheries.noaa.gov/inport/item/63097
0 NOAA Technical Memorandum https://doi.org/10.25923/8r7f-t404
0 NOAA Technical Memorandum https://doi.org/10.25923/w1k2-0y84
0 NOAA Technical Memorandum https://doi.org/10.25923/h2q8-jv47
0 Journal Article https://doi.org/10.3389/fmars.2021.647943
0 Related NCEI data accession https://www.ncei.noaa.gov/archive/accession/0253468
0 Related NCEI data accession https://www.ncei.noaa.gov/archive/accession/0280938
0 Related NCEI data accession https://doi.org/10.25921/5qsa-z057
0 InPort Metadata Record for related SfM imagery https://www.fisheries.noaa.gov/inport/item/63095
0 Institution web page https://www.pifsc.noaa.gov/ecosystem_sciences/
0 Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords

Tags

  • crep
  • ofu island (14s169w0013)
  • structure from motion
  • united states of america
  • american samoa (14s170w0000)
  • reef monitoring and assessment
  • corals
  • coral reef ecosystem division
  • benthic
  • pifsc
  • in situ biological
  • biosphere
  • photographic analysis
  • national coral reef monitoring program
  • tutuila island (14s170w0016)
  • oceans
  • american samoa
  • sfm
  • numeric data sets
  • oceanography
  • pacific island fisheries science center
  • swains atoll (11s171w0001)
  • t4jlr1
  • scleractinia (stony corals)
  • ta'u island (14s169w0012)
  • manu'a group
  • olosega island (14s169w0014)
  • earth science
  • coral colony size and condition
  • benthic biology
  • ramp
  • coral diseases
  • marine biology
  • coral communities
  • cred
  • bleaching
  • 743
  • gis
  • reef assessment and monitoring program
  • coral reef ecology
  • ocean basin
  • ecosystem sciences division
  • coral
  • esd
  • coastal processes
  • species richness
  • zoology
  • coral reefs
  • rose atoll (14s168w0001)
  • coral condition
  • pacific ocean
  • rapid assessment studies
  • ecological dynamics
  • country/territory
  • coral reef ecosystem program

Topics

Categories