National Coral Reef Monitoring Program: Towed-diver Surveys of Large-bodied Fishes of the Marianas since 2014

The towed-diver method is used to conduct surveys of large-bodied (> 50 cm) fishes 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 divers—one benthic and one fish—behind a small boat for approximately 50 min following the ~15-m depth contour and covering about 2–3 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 in which the number, size, and species of all large-bodied fishes observed within a visually estimated 5-m transect on either side of the fish diver and 10 m in front were recorded. The data were collected around the Marianas as part of the NOAA Pacific Islands Fisheries Science Center (PIFSC), Coral Reef Ecosystem Program (CREP) led mission since 2014. These data can be accessed online via the NOAA National Centers for Environmental Information (NCEI) Ocean Archive.

Data and Resources

Additional Info

Field Value
Last Updated June 22, 2019, 00:28
Created June 10, 2017, 17:58
access_constraints ["Access Constraints: None\n | Use Constraints: Please cite NOAA Coral Reef Ecosystem Program (CREP) when using the data.\n\nSuggested citation:\n\nNational Coral Reef Monitoring Program: Towed-diver Surveys of Large-bodied Fishes of the Marianas in 2014. NOAA's National Centers for Environmental Information, https://inport.nmfs.noaa.gov/inport/item/35762. | Distribution Liability: While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty."]
bbox-east-long 145.8533789
bbox-north-lat 20.54979267
bbox-south-lat 13.22982722
bbox-west-long 144.6258831
contact-email ivor.williams@noaa.gov
coupled-resource []
dataset-reference-date [{"type": "publication", "value": "2016"}]
frequency-of-update asNeeded
graphic-preview-description Diver counting coral reef fishes using the towed diver method.
graphic-preview-file https://pifsc-www.irc.noaa.gov/cred/img/diver_using_towboard_sm.jpg
graphic-preview-type JPG
guid gov.noaa.nmfs.inport:35762
licence ["NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose."]
metadata-date 2019-06-04T13:14:25
metadata-language eng
progress completed
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temporal-extent-begin 2014-03-25
temporal-extent-end 2014-05-06