https://doi.org/10.82144/2f222018 https://seamap.env.duke.edu/dataset/433 https://www.gbif.org/dataset/9a6a23bc-688f-4e31-9461-3ee3352575fa https://obis.org/dataset/97bc65c9-e760-4833-8608-12b2644eccfb Kim Urian Duke University Marine Lab Primary contact kim.urian@gmail.com OBIS-SEAMAP Marine Geospatial Ecology Lab, Duke University

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seamap-contact@duke.edu https://seamap.env.duke.edu OBIS-SEAMAP Marine Geospatial Ecology Lab, Duke University

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seamap-contact@duke.edu https://seamap.env.duke.edu distributor Kim Urian Duke University Marine Lab Primary contact kim.urian@gmail.com owner 2025-07-31 eng Original provider: Duke University Marine Laboratory Dataset credits: Duke University Marine Laboratory Abstract: The United States (US) Navy proposed constructing an Undersea Warfare Training Range (USWTR) along the US Atlantic coast. One of the proposed sites within the Cherry Point (CHPT) OPAREA is an area of 1,713 km2 in Onslow Bay, 87 km from the coast of North Carolina. We established a monitoring program designed to estimate density and document distribution and seasonal residency of marine mammals and sea turtles in the proposed USWTR. We established ten 40 nm long transect lines, spaced approximately 5 nm apart. These ten transect lines were surveyed by both shipboard (Duke University Marine Lab) and aerial platforms (conducted by University of North Carolina Wilmington). The survey area incorporates a variety of habitats from shallow waters of the shelf to the continental slope; the Gulf Stream meanders through the eastern portion of the survey area, flowing towards the northeast. The surveys began in June 2007 and have transitioned into ongoing photo-ID and biopsy sampling surveys. Occurrence GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type.xml Observation GBIF Dataset Subtype Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_subtype.xml Marine Biology Visual sighting Onslow Vessel Vessels Sightings marine mammals sea turtles passive acoustics density estimation N/A Records that did not include time were filled with 00:00:00 and noted in the [Notes] field. Effort data associated with the additional sightings are forthcoming. Additional survey data for the Onslow Bay USWTR site are available on OBIS-SEAMAP in the <a href="http://seamap.env.duke.edu/datasets/detail/902">DUML vessel-based photo-id and biopsy surveys in Onslow Bay CHPT OPAREA 2011-2013</a> dataset. This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License. https://seamap.env.duke.edu/dataset/433 Oceans,North Atlantic,Onslow Bay,Gulf Stream -77.1443 -76.027308 34.271809 33.405934 2007-06-07 2010-10-10 Scientific names are based on the Integrated Taxonomic Information System (ITIS). species Caretta caretta Loggerhead sea turtle family Cheloniidae Sea turtles family Delphinidae Dolphins species Dermochelys coriacea Leatherback sea turtle genus Globicephala Pilot whales species Grampus griseus Risso's dolphin species Stenella frontalis Atlantic spotted dolphin species Steno bredanensis Rough-toothed dolphin species Tursiops truncatus Common bottlenose dolphin The primary objectives of these surveys are to:<br> (1) document species occurrence, estimate densities, and examine patterns of residency of marine mammals and turtles in the defined study area,<br> (2) conduct seabird counts concurrent with the visual surveys, and<br> (3) supplement the visual surveys with acoustic monitoring using a towed hydrophone array.<br> The towed array will facilitate compilation of an acoustic library of species-specific recordings.<br><br> This is a collaborative project with University of North Carolina Wilmington and the Research Unit for Wildlife Population Assessment, Centre for Research into Ecological and Environmental Modelling, University of St. Andrews, Scotland. asNeeded Kim Urian Duke University Marine Lab Primary contact kim.urian@gmail.com NA NA NA Kim Urian owner The U.S. Navy Marine Species Monitoring Program zd_433 2025-07-31T14:17:37-04:00 dataset Urian, K. 2013. DUML vessel-based line transect surveys for proposed Onslow Bay USWTR site 2007-2010. Version 1.5.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/2f222018. OBIS-SEAMAP Dataset Page UTF-8 Interactive map https://seamap.env.duke.edu/dataset/433 FGDC Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/433/fgdc EML Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/433/eml OBIS-SEAMAP zd_433 zd_433