DUML vessel-based line transect surveys for proposed Onslow Bay USWTR site 2007-2010

Original provider:Duke University Marine LaboratoryDataset credits:Duke University Marine LaboratoryAbstract: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.