Pacific Reef Assessment and Monitoring Program: Towed-diver Surveys of Benthic Habitats, Key Benthic Species, and Marine Debris Sightings of the U.S. Pacific Reefs from 2000-09-09 to 2012-05-19 (NCEI Accession 0163745)

The towed-diver method is used to conduct benthic surveys, assessing large-scale disturbances (e.g., bleaching) and quantifying benthic components such as habitat complexity/type and the general distribution and abundance patterns of live coral, CCA, macroalgae, and macroinvertebrates. Surveys are conducted in the Hawaiian and Mariana Archipelagos, American Samoa, and the Pacific Remote Island Areas as part of the NOAA National Coral Reef Monitoring Program (NCRMP). A suitable method for assessing relatively large areas of reef habitat, the method involves towing a pair of SCUBA diversâone benthic and one fishâbehind a small boat for approximately 50 min following the ~15-m depth contour and covering about 2â3 km of habitat. Each diver is equipped with a towboard and attempts to maintain a constant elevation above the surface of the reef (~1 m) for the duration of the survey. A complete towed-diver survey is divided into 10, 5-min segments, with visual observations recorded by 5-min segment.

The visual estimate data provided in this dataset were collected during towed-diver surveys which includes percentage cover of total live hard corals, stressed hard corals, soft corals, sand, coralline algae, and macroalgae, and the number of individual macroinvertebrates (crown of thorns starfish (COTS), sea urchins, and giant clams). Benthic habitat complexity and type data are also collected as part of the survey with the following habitat type categories: continuous reef, spur and groove, patch reefs, rock boulders, pavement, rubble flat, sand flats, pinnacle, and wall.

The data were collected at coral reefs across all U.S.-affiliated regions as part of the NOAA Pacific Islands Fisheries Science Center (PIFSC), Coral Reef Ecosystem Program (CREP) led missions since 2000.

Tags: 1221, 587, american samoa, american samoa (14s170w0000), aquatic habitat, baker island, baker island (00n176w0001), benthic biology, biennial, biology, biosphere, c204 pacific reef assessment and monitoring program (pacific ramp): biennial monitoring for the us p, census, central pacific ocean, coastal processes, coral, coral communities, coral cover, coral mortality, coral reef ecology, coral reef ecosystem division, coral reef ecosystem program, coral reefs, corals, country/territory, cred, crep, earth science, guam, guam (13n144e0000), habitats, hard coral cover, hard coral cover dead percentage, hard coral cover live percentage, hawaiian islands (21n157w0027), howland island, howland island (00s176w0001), jarvis island (00s160w0001), johnston atoll, johnston atoll (16n169w0001), kingman reef (06n162w0001), line islands, macroinvertebrates, mariana archipelago, marine biology, marine invertebrates, northern mariana islands, northern mariana islands ( cnmi ) (18n146e0000), numeric data sets, ocean basin, oceanography, oceans, pacific islands fisheries science center, pacific ocean, pacific reef assessment and monitoring program: monitoring coral reef ecosystems of the us pacific i, palmyra atoll (05n162w0001), photic zone corals, pifsc, population density, reef habitat, reef monitoring and assessment, united states of america, usa minor outlying islands, wake atoll, wake atoll (19n167e0001), western pacific ocean, wur9kb, zoology
Organization: National Oceanic and Atmospheric Administration, Department of Commerce