AMAPPS Southeast Aerial Cruise Summer 2016 at OBIS-SEAMAP

As part of the AMAPPS program, the Southeast Fisheries Science Center conducted aerial surveys of continental shelf and slope waters (up to the 2,000 m isobath) along the US east coast from New Jersey to Florida. The survey was conducted in 2016 between 3 July and 9 August aboard a NOAA Twin Otter aircraft at an altitude of 600 feet (183 m) and a speed of 110 knots. Survey tracklines were oriented perpendicular to the shoreline and latitudinally spaced 20 km apart. Fine-scale tracklines were surveyed closer to the shores of NJ, DE and VA over renewable energy leasing areas.

The survey was designed for analysis using Distance sampling and a two-team (independent observer) approach to correct for perception bias in resulting abundance estimates. Due to staffing issues on 20 Nov the survey was flown with one team with four observers (left and right bubbles, belly and a data recorder).

The goal of the survey was to conduct line-transect surveys using the Distance sampling approach to estimate the abundance and spatial distribution of cetaceans and turtles in waters over the continental shelf and slope (shoreline to 2,000 m isobath) of the eastern USA.

Dias, L. and L. Garrison. 2018. AMAPPS Southeast Aerial Cruise Summer 2016. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/1856) on yyyy-mm-dd.

The Aerial Survey Discussion May Be Found in Appendix C Of 2016 Annual Report of a Comprehensive Assessment of Marine Mammal, Marine Turtle, and Seabird Abundance and Spatial Distribution in US Waters of the Western North Atlantic Ocean AMAPPS II https://doi.org/10.25923/gbap-g480 / https://repository.library.noaa.gov/view/noaa/22663

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Visual sightings are reviewed by lead observers and the field party chief at sea to verify species identifications and group size counts. Effort and sightings data from digital records are reviewed post-survey and compared to field notes and error logs. Corrected survey effort shapefiles are visually reviewed and verified.

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