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OAS accession Detail for 0210740
| << previous | |revision: 11 |
| accessions_id: | 0210740 | archive |
|---|---|
| Title: | Structure from motion images collected at control sites during marine debris surveys of coral reefs entangled with fishing nets at Pearl and Hermes Atoll in the Northwestern Hawaiian Islands from 2018-09-24 to 2018-10-03 (NCEI Accession 0210740) |
| Abstract: | The “control site” photographs described in this dataset were collected using a Structure from Motion (SfM) approach during in-water marine debris swim surveys conducted by snorkelers in search of derelict fishing nets. Surveys were conducted by the NOAA Fisheries, Ecosystem Sciences Division (ESD) from September 24 to October 3, 2018 at Pearl and Hermes Atoll during an ESD-led marine debris mission to the Northwestern Hawaiian Islands (NWHI) aboard NOAA Ship Oscar Elton Sette. The lagoon at Pearl and Hermes was surveyed equally across the spatial gradient, from locations where derelict fishing nets are common to locations where derelict fishing nets have never been observed. During the 2018 mission, only a subset of marine debris surveys resulted in a SfM survey. Fishing nets were located during swim surveys and selected for SfM if the net was interacting with coral or hard substrate, the depth of the net was within ~1–4 m of the surface, and the area of the net fit within the 9 sq. meter SFM survey plot. A complete SfM survey is comprised of three sets of images. Two sets were taken at each net-impact site. A final set—the “control site” photographs—was taken at a paired “control” site that was selected ≥50 m away from the net-impact site. During a SFM survey at the “control” sites, a permanent 3 x 3 m survey plot was established and photographed using a back and forth swim pattern for later processing using a SfM approach. |
| Date received: | 20200605 |
| Start date: | 20180924 |
| End date: | 20181003 |
| Seanames: | |
| West boundary: | -175.8211335 |
| East boundary: | -175.7880926 |
| North boundary: | 27.89404863 |
| South boundary: | 27.82745706 |
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| Submitter: | Trick, Kevin |
| Submitting institution: | US DOC; NOAA; NMFS; Pacific Islands Fisheries Science Center |
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| Metadata version: | 11 |
| Keydate: | 2020-06-06 14:40:38+00 |
| Editdate: | 2024-09-10 17:56:21+00 |