https://doi.org/10.82144/dbf0d8a9 https://seamap.env.duke.edu/dataset/1949 https://www.gbif.org/dataset/f755288b-e29b-4ad2-869c-3611a6a60509 https://obis.org/dataset/717041c4-dd72-4457-8963-4e63e8e35710 Gina Rappucci NOAA Southeast Fisheries Science Center Primary contact gina.rappucci@noaa.gov Lance Garrison NOAA Southeast Fisheries Science Center Secondary contact lance.garrison@noaa.gov OBIS-SEAMAP Marine Geospatial Ecology Lab, Duke University

A328 LSRC building Durham NC 27708 US

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

A328 LSRC building Durham NC 27708 US

seamap-contact@duke.edu https://seamap.env.duke.edu distributor Gina Rappucci NOAA Southeast Fisheries Science Center Primary contact gina.rappucci@noaa.gov owner Lance Garrison NOAA Southeast Fisheries Science Center Secondary contact lance.garrison@noaa.gov originator 2025-07-31 eng Original provider: NOAA Southeast Fisheries Science Center (SEFSC) Dataset credits: NOAA Southeast Fisheries Science Center (SEFSC) Abstract: As part of GoMMAPPS, the Southeast Fisheries Science Center conducted aerial surveys of continental shelf waters (up to the 200-m isobath) in the U.S. Gulf of Mexico. The survey was conducted between 18 January and 14 March 2018 aboard a NOAA Twin Otter aircraft at an altitude of 600 feet (183 m) and a speed of 100-110 knots (185-204 kph). Survey tracklines were oriented perpendicular to the shoreline and latitudinally spaced 20 km apart. The survey was designed for analysis using Distance sampling with a two-team (independent observer) approach to correct for perception bias in resulting abundance estimates. The study area extended from the shoreline to the 200-m isobath between Tampa, FL and Port O’Connor, TX, and included fine-scale tracklines over estuarine waters of Mississippi Sound. 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 Marine Animal Survey Marine mammals Sea turtles Visual Sighting Aircraft N/A Provider's survey code is TOSE18WIN. Perpendicular distance to the animal is not publicly available. The dataset is accompanied by transect (effort) data which is provided as a separate file. Sightings included were detected by the forward team. Environmental Attribute Codes Beaufort Sea state 0 Calm, mirror like seas 1 Waves <1ft, rippled surface 2 Small wavelets (<2 ft), no white caps 3 Large wavelets (<3ft), scattered white caps 4 Swell 3-4 ft, numerous white caps 5 Swell >5 ft, many white caps, some spray 6 Swell >10 ft, white caps everywhere, spray CloudCover 0 Clear 1 0-25% Cloudy 2 26-50% Cloudy 3 51-75% Cloudy 4 76-100% Cloudy 5 Overcast Glare (Glare intensity) 0 No Impairment 1 Slight Impairment 2 Moderate Impairment 3 Severe Impairment Weather 0 Clear 1 Mist 2 Light Rain 3 Heavy Rain Conditions 0 Poor 1 Fair 2 Moderate 3 Good 4 Excellent Haze 0 No 1 Yes Fog 0 No 1 Yes Sun penetration (Sun pen) 0 Poor 1 Fair 2 Good 3 Excellent Turbidity 0 Poor 1 Fair 2 Good 3 Excellent To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0). Users may copy, modify, distribute and use the work, including for commercial purposes, without restriction. https://seamap.env.duke.edu/dataset/1949 Oceans,Gulf of Mexico -96.36848 -82.6506 30.3267 27.78604 2018-01-18 2018-03-14 Scientific names are based on the Integrated Taxonomic Information System (ITIS). species Caretta caretta Loggerhead sea turtle species Chelonia mydas Green sea turtle family Cheloniidae Sea turtles family Delphinidae Dolphins species Dermochelys coriacea Leatherback sea turtle species Lepidochelys kempii Kemp's ridley species Stenella frontalis Atlantic spotted dolphin species Trichechus manatus West indian manatee species Tursiops truncatus Common bottlenose dolphin The goal of the survey was to conduct line-transect surveys using the Distance sampling approach to estimate the abundance and spatial distribution of marine mammals and sea turtles in waters over the continental shelf in the U.S. Gulf of Mexico. notPlanned Gina Rappucci NOAA Southeast Fisheries Science Center Primary contact gina.rappucci@noaa.gov NA NA NA Gina Rappucci owner Lance Garrison originator NA zd_1949 2025-07-31T17:28:57-04:00 dataset Rappucci, G. and L. Garrison. 2019. SEFSC GoMMAPPS 2018 Winter Aerial Survey. Version 1.0.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/dbf0d8a9. OBIS-SEAMAP Dataset Page UTF-8 Interactive map https://seamap.env.duke.edu/dataset/1949 FGDC Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/1949/fgdc EML Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/1949/eml OBIS-SEAMAP zd_1949 zd_1949 Gina Rappucci, Kevin Barry, Lance P. Garrison, Jenny Litz. 2018. GoMMAPPS Winter aerial abundance survey during January – March 2018: Summary Report.