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OAS accession Detail for 0240610, meta_version: 1. Current meta_version is: 3
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| accessions_id: | 0240610 | archive |
|---|---|
| Title: | National Coral Reef Monitoring Program: Benthic Cover Derived from Analysis of Benthic Images Collected during Stratified Random Surveys (StRS) across American Samoa from 2018-06-19 to 2018-07-18 (NCEI Accession 0240610) |
| Abstract: | The data described here resulted from benthic photo-quadrat surveys conducted along transects at stratified random sites across American Samoa in 2018 as a part of Rapid Ecological Assessment (REA) surveys for corals and fish. Benthic habitat imagery was quantitatively analyzed using the web-based annotation tool CoralNet (Beijbom et al. 2016). Images were analyzed to produce three functional group levels of benthic cover: Tier 1 (e.g., hard coral, soft coral, macroalgae, turf algae, etc.), Tier 2 (e.g., Hard Coral = massive, branching, foliose, encrusting, etc.; Macroalgae = upright macroalgae, encrusting macroalgae, bluegreen macroalgae, and Halimeda, etc.), and Tier 3 (e.g., Hard Coral = Astreopora sp, Favia sp, Pocillopora, etc.; Macroalgae = Caulerpa sp, Dictyosphaeria sp, Padina sp, etc.). A stratified random sampling (StRS) design was employed to survey the coral reef ecosystems across the region. 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 to ultimately produce estimates of relative abundance (benthic 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. |
| Date received: | 20210730 |
| Start date: | 20180619 |
| End date: | 20180718 |
| Seanames: | National Marine Sanctuary of American Samoa, South Pacific Ocean |
| West boundary: | -171.092425 |
| East boundary: | -168.141129 |
| North boundary: | -11.045273 |
| South boundary: | -14.558022 |
| Observation types: | visual estimate |
| Instrument types: | photograph |
| Datatypes: | BENTHIC COMMUNITIES |
| Submitter: | |
| Submitting institution: | US DOC; NOAA; NMFS; Pacific Islands Fisheries Science Center |
| Collecting institutions: | US DOC; NOAA; NMFS; Pacific Islands Fisheries Science Center; Ecosystem Sciences Division |
| Contributing projects: | ASRAMP, CORAL REEF STUDIES, CRCP, NCRMP, Pacific RAMP |
| Platforms: | Hi'ialakai (33HL) |
| Number of observations: | |
| Supplementary information: | Submission Package ID: R5LM8G |
| Availability date: | |
| Metadata version: | 1 |
| Keydate: | 2021-08-27 22:02:05+00 |
| Editdate: | 2021-08-27 22:02:31+00 |