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OAS accession Detail for 0217940
| << previous | |revision: 9 |
| accessions_id: | 0217940 | archive |
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| Title: | National Coral Reef Monitoring Program: Benthic Cover Derived from Analysis of Benthic Images Collected during Stratified Random Surveys (StRS) across the Main Hawaiian Islands from 2019-04-21 to 2019-10-31 (NCEI Accession 0217940) |
| Abstract: | The coral reef benthic community data described here result from the annotation (classification) of benthic images collected during photoquadrat surveys conducted by the NOAA Pacific Islands Fisheries Science Center (PIFSC), Ecosystem Sciences Division (ESD, formerly the Coral Reef Ecosystem Division) as part of NOAA's ongoing National Coral Reef Monitoring Program (NCRMP). SCUBA divers conducted benthic photoquadrat surveys in coral reef habitats during the ESD-led NCRMP mission around the main Hawaiian Islands from April 21 to October 31, 2019 according to protocols established by ESD and NCRMP. Still photographs were collected with a high-resolution digital camera mounted on a pole to document the benthic community composition at predetermined points along transects at stratified random sites surveyed only once as part of Rapid Ecological Assessment (REA) surveys for corals and fish (Ayotte et al. 2015 and Winston et al. 2020, respectively), with 30 photoquadrat images collected at each survey site. A stratified random sampling (StRS) design was employed to survey these coral reef ecosystems. 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. The benthic habitat images were quantitatively analyzed using the web-based image annotation tool, CoralNet (Beijbom et al. 2015). Ten points were randomly overlaid on each image and analysts identified the organism or type of substrate beneath, with 300 annotations (points) generated per site following Lozada-Misa et al. (2017). Images were analyzed to produce three functional group levels of benthic cover: Tier 1, functional taxa group (e.g., hard coral, soft coral, macroalgae, turf algae), Tier 2, morphology (e.g., Hard Coral = massive, branching, foliose, encrusting; Macroalgae = upright macroalgae, encrusting macroalgae, bluegreen macroalgae, and Halimeda), and Tier 3, genera (e.g., Hard Coral = Astreopora sp, Favia sp, Pocillopora; Macroalgae = Caulerpa sp, Dictyosphaeria sp, Padina sp). |
| Date received: | 20200731 |
| Start date: | 20190421 |
| End date: | 20191031 |
| Seanames: | |
| West boundary: | -160.251839 |
| East boundary: | -154.804172 |
| North boundary: | 22.218748 |
| South boundary: | 19.030253 |
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| Submitter: | Luers, Lori |
| Submitting institution: | US DOC; NOAA; NMFS; Pacific Islands Fisheries Science Center; Ecosystem Sciences Division |
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| Number of observations: | |
| Supplementary information: | Submission Package ID: AALRA4 |
| Availability date: | |
| Metadata version: | 9 |
| Keydate: | 2020-08-17 17:45:35+00 |
| Editdate: | 2024-03-14 18:00:01+00 |