Towed-Diver Observations in the Main Hawaiian Islands to Assess the Mass Coral Bleaching Event in November 2015
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% CI95), 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, flourometry (chlorophyll-a), turbidity and dissolved oxygen.
The towed-diver visual estimate data can be accessed online via the NOAA National Centers for Environmental Information (NCEI) Ocean Archive.
Complete Metadata
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| description | 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% CI95), 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, flourometry (chlorophyll-a), turbidity and dissolved oxygen. The towed-diver visual estimate data can be accessed online via the NOAA National Centers for Environmental Information (NCEI) Ocean Archive. |
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| identifier | gov.noaa.nmfs.inport:32588 |
| issued | 2016-01-01T00:00:00.000+00:00 |
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[
"31075",
"Observing and Documenting Predicted 2015/2016 Mass Coral Bleaching Events in Hawaii",
"Numeric Data Sets > Biology",
"EARTH SCIENCE > Biosphere > Aquatic Habitat > Reef Habitat",
"EARTH SCIENCE > Biosphere > Zoology > Corals",
"EARTH SCIENCE > Biosphere > Zoology > Corals > Bleaching > Bleaching Resistance",
"EARTH SCIENCE > Biosphere > Zoology > Corals > Coral Diseases > Bleaching",
"EARTH SCIENCE > Biosphere > Zoology > Corals > Coral Diseases > Bleaching > Bleaching Alert Area",
"EARTH SCIENCE > Biosphere > Zoology > Corals > Coral Diseases > Bleaching > Bleaching Thermal Stress",
"EARTH SCIENCE > Biosphere > Zoology > Corals > Coral Mortality",
"EARTH SCIENCE > Biosphere > Zoology > Corals > Photic Zone Corals",
"EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment",
"EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs",
"EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Coral Cover",
"EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Habitats",
"EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Hard Coral Cover",
"EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Hard Coral Cover Dead percentage",
"EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Hard Coral Cover Live percentage",
"EARTH SCIENCE > Oceans > Marine Biology > Coral",
"EARTH SCIENCE > Oceans > Marine Biology > Coral Communities",
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"CORAL-BLEACHING",
"REEF AND/OR BOTTOM REGIME - PERCENT COVER",
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"CORAL REEF STUDIES",
"Coral Reef Conservation Program",
"US DOC; NOAA; NMFS; Pacific Islands Fisheries Science Center; Ecosystem Sciences Division; Coral Reef Ecosystem Program",
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"COUNTRY/TERRITORY > United States of America > Hawaii > Maui > Lanai Island (20N156W0002)",
"COUNTRY/TERRITORY > United States of America > Hawaii > Maui > Maui Island (20N156W0004)",
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"OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Oahu Island > Oahu (21N157W0003)",
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"Main Hawaiian Islands",
"DOC/NOAA/NMFS/PIFSC > Pacific Islands Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce",
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|
| landingPage | https://www.fisheries.noaa.gov/inport/item/32588 |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2016-01-01T00:00:00.000+00:00 |
| publisher |
{
"name": "Pacific Islands Fisheries Science Center",
"@type": "org:Organization"
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|
| references |
[
"https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/pifsc/dmp/pdf/32588.pdf"
]
|
| rights | otherRestrictions, unclassified |
| spatial | -155.82934199,19.74853696,-157.94722922,21.30306893 |
| temporal | 2015-11-03T00:00:00+00:00/2015-11-18T00:00:00+00:00 |
| title | Towed-Diver Observations in the Main Hawaiian Islands to Assess the Mass Coral Bleaching Event in November 2015 |
