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Towed-Diver Observations in the Main Hawaiian Islands to Assess the Mass Coral Bleaching Event from 2015-11-03 to 2015-11-18 (NCEI Accession 0157624)
A team from the Pacific Islands Fisheries Science Center (PIFSC), Coral Reef Ecosystem Program (CREP) deployed on a two-week research cruise in November 2015 to evaluate the impacts of the 2015 mass coral bleaching event in the Main Hawaiian Islands via towed-diver surveys. Areas surveyed included south Oahu, west Maui, Lana’i, and west Hawaii island. Over the course of 10 survey days, the team surveyed approximately 90 km of 15-m wide transects at depths ranging from 2 to 10 m.
Data provided in this dataset include visual estimates recorded by towed divers of percentage of live coral that was pale and bleached, as well as presence/absence data of condition by generic composition. Analysis of observer data reveals estimates of live coral affected by the event (pale or bleached) show a regional mean of 38.8% (+/- 1.96% Confidence Interval 95%), with large variation in impact apparent between transects on the same island separated by as little as 13 km.
Additionally, instruments mounted on the towboards collected other in-situ data that are documented separately. A downward-facing DSLR camera with strobes collected photographic quadrat data by capturing an image of the benthos at 15-second intervals during the surveys. Oceanographic data was collected continuously throughout each survey with a suite of mounted sensors recording conductivity, temperature, depth, fluorometry (chlorophyll-a), turbidity and dissolved oxygen.
Complete Metadata
| describedByType | application/octet-steam |
|---|---|
| identifier | gov.noaa.nodc:0157624 |
| issued | 2017-02-14T00:00:00.000+00:00 |
| landingPage | https://www.ncei.noaa.gov/contact |
| language | [] |
| references |
[ "https://www.ncei.noaa.gov/archive/accession/0157633", "https://www.fisheries.noaa.gov/inport/item/32588" ] |
| rights | otherRestrictions |
| spatial | -155.829,19.7485,-157.947,21.3031 |
| temporal | 2015-11-03T00:00:00+00:00/2015-11-18T00:00:00+00:00 |
