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Structure-from-Motion Coral Demography derived from Stratified Random Site Imagery collected across the Hawaiian Archipelago from 2019-04-21 to 2019-08-03 (NCEI Accession 0253468)

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Coral adult and juvenile coral colony demographic data described in this dataset are derived from the GIS analysis of benthic photomosaic imagery. The source imagery was collected using a Structure from Motion (SfM) approach during in-water surveys conducted by divers. The data were collected as part of the NOAA Pacific Islands Fisheries Science Center (PIFSC) and Ecosystem Sciences Division (ESD; formerly the Coral Reef Ecosystem Division) led National Coral Reef Monitoring Program (NCRMP) missions around the Main Hawaiian Islands in 2019 aboard the NOAA Ship Oscar Elton Sette.

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.
  • Cite as: NOAA Pacific Islands Fisheries Science Center, Ecosystem Sciences Division (2022). Structure-from-Motion Coral Demography derived from Stratified Random Site Imagery collected across the Hawaiian Archipelago from 2019-04-21 to 2019-08-03 (NCEI Accession 0253468). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0253468. Accessed [date].
gov.noaa.nodc:0253468
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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 2019-04-21 to 2019-08-03
Spatial Bounding Box Coordinates
West: -160.237
East: -154.8191
South: 19.07632
North: 22.14699
Spatial Coverage Map
General Documentation
Associated Resources
  • Benthic cover and other related datasets derived from Structure-from-Motion (SfM) imagery of coral reef ecosystems in Pacific Islands Regions
    • NCEI Collection
      Navigate directly to the URL for data access and direct download.
  • Coral Reef Conservation Program (2016). Documentation for NOAA's Coral Reef Conservation Program (CRCP) National Coral Reef Monitoring Program (NCRMP) data archived at NCEI (NCEI Accession 0157633). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0157633.
  • Pacific Islands Fisheries Science Center, 2022: National Coral Reef Monitoring Program: Structure from Motion (SfM) Coral (Adult and Juvenile) Annotations derived from Stratified Random Site (StRS) Imagery across the Hawaiian Archipelago since 2019, https://www.fisheries.noaa.gov/inport/item/63097.
  • Ecosystem Sciences Division Standard Operating Procedures: Data Collection for Rapid Ecological Assessment Benthic Surveys, 2018 Update
  • Processing Photomosaic Imagery of Coral Reefs Using Structure-from-Motion Standard Operating Procedures
  • Comparing coral colony surveys from in-water observations and structure-from-motion imagery shows low methodological bias
  • Integrating structure-from-motion photogrammetry with geospatial software as a novel technique for quantifying 3D ecological characteristics of coral reefs
  • Visualizing high hesolution three-dimensional and two-dimenstional data of cultural heritage sites
  • Ecosystem Sciences Division standard operating procedures: data collection for rapid ecological assessment benthic surveys
  • Parent ID (indicates this dataset is related to other data):
    • gov.noaa.nodc:PIFSC-SfM-DerivedData
Publication Dates
  • publication: 2022-05-25
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: 8DEL5N

Note: The abstract references source imagery. These images were not submitted with the dataset.
Purpose The purpose of the SfM surveys of stratified random sites throughout the Hawaiian Archipelago is to track coral demography across taxon, regions, and environmental gradients. This study leveraged SfM, an emerging photogrammetry technique, to allow efficient data collection.
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: NOAA Pacific Islands Fisheries Science Center, Ecosystem Sciences Division (2022). Structure-from-Motion Coral Demography derived from Stratified Random Site Imagery collected across the Hawaiian Archipelago from 2019-04-21 to 2019-08-03 (NCEI Accession 0253468). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0253468. Accessed [date].
Cited Authors
Principal Investigators
Contributors
Resource Providers
Points of Contact
Publishers
Acknowledgments
  • Related Funding Agency: NOAA Coral Reef Conservation Program
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
CoRIS Discovery Thesaurus
  • Numeric Data Sets > Benthic
CoRIS Theme Thesaurus
  • EARTH SCIENCE > Biosphere > Zoology > Corals > Coral Condition
  • EARTH SCIENCE > Biosphere > Zoology > Corals > Coral Diseases > Bleaching
  • EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Photographic Analysis
  • EARTH SCIENCE > Biosphere > Zoology > Corals > Scleractinia (stony corals)
  • EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs
  • 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
  • PIFSC
  • Pacific Islands Fisheries Science Center
Global Change Master Directory (GCMD) Data Center Keywords
Platform keywords NODC PLATFORM NAMES THESAURUS Global Change Master Directory (GCMD) Platform Keywords ICES/SeaDataNet Ship Codes
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 > Hawaii > Hawaii > Hawaii (21N160W0000)
  • COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Hawaii Island (19N155W0003)
  • COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Kauai Island (22N159W0001)
  • COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Molokai Island (21N157W0001)
  • COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Oahu (21N157W0003)
  • COUNTRY/TERRITORY > United States of America > Hawaii > Kalawao > Kahoolawe Island (20N156W0001)
  • COUNTRY/TERRITORY > United States of America > Hawaii > Kauai > Niihau Island (21N160W0001)
  • COUNTRY/TERRITORY > United States of America > Hawaii > Maui > Lanai Island (20N156W0002)
  • COUNTRY/TERRITORY > United States of America > Hawaii > Maui > Maui Island (20N156W0004)
  • COUNTRY/TERRITORY > United States of America > Hawaiian Islands (21N157W0027)
  • OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands (21N157W0027)
  • OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Hawaii > Hawaii (21N160W0000)
  • OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Hawaii Island > Hawaii Island (19N155W0003)
  • OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Kahoolawe Island > Kahoolawe Island (20N156W0001)
  • OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Kauai Island > Kauai Island (22N159W0001)
  • OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Lanai Island > Lanai Island (20N156W0002)
  • OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Maui Island > Maui Island (20N156W0004)
  • OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Molokai Island > Molokai Island (21N157W0001)
  • OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Niihau Island > Niihau Island (21N160W0001)
  • OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Oahu Island > Oahu (21N157W0003)
Global Change Master Directory (GCMD) Location Keywords
Project keywords NODC PROJECT NAMES THESAURUS CRCP Project
  • 743
  • National Coral Reef Monitoring Program
Provider Project Names
  • RAMP
  • Reef Assessment and Monitoring Program
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: NOAA Pacific Islands Fisheries Science Center, Ecosystem Sciences Division (2022). Structure-from-Motion Coral Demography derived from Stratified Random Site Imagery collected across the Hawaiian Archipelago from 2019-04-21 to 2019-08-03 (NCEI Accession 0253468). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0253468. 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
  • 2022-05-25T18:07:00Z - NCEI Accession 0253468 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: CORAL - COLONY SIZE (measured); Units: square meter; Observation Category: GIS product; Sampling Instrument: GIS; Sampling and Analyzing Method: Colony size measured using ArcGIS ArcMap.
  • Parameter or Variable: CORAL - SPECIES IDENTIFICATION (measured); Units: unitless; Observation Category: other; Sampling Instrument: visual observation.
Acquisition Information (collection)
Instrument
  • photograph
  • visual observation
Platform
  • NOAA Ship Oscar Elton Sette
Last Modified: 2023-02-06T13:44:11Z
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