https://doi.org/10.82144/a563f231 https://www.gbif.org/dataset/4ef9d605-b08f-4f29-8d37-0536ffd2938e https://seamap.env.duke.edu/dataset/1462 https://obis.org/dataset/a666081f-572e-4371-b609-0d38362c3829 Alexander Seymour Duke University Marine Lab Primary contact alexander.c.seymour@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 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 Alexander Seymour Duke University Marine Lab Primary contact alexander.c.seymour@duke.edu owner 2025-09-11 eng Original provider: Duke Marine Robotics and Remote Sensing Lab Dataset credits: Duke Marine Robotics and Remote Sensing Lab Abstract: These RGB mosaics and thermal indices of Atlantic grey seal colonies at Hay and Saddle Island, Nova Scotia, were collected by small unmanned aircraft systems (UAS). The mosaics and thermal indices were assessed by human analysts, who counted the seals in the mosaic and classified individuals as 'young of the year' or 'adult'. Concurrently, an automated detection and classification model was applied to the datasets and compared to human counts. 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 Computer Vision Unmanned Aerial Vehicals UAV Unmanned Aircraft Systems UAS N/A The downloadable shapefile includes TIFF images of RGB mosaics and thermal indices. The size of the zipped file is 1GB and may take a long time to download. Within the dowloaded file, the 'Analysis Materials' folders contain point shapefiles of the seals counted and classified by human analysts. In addition, the folders contain the landscape masks that were applied to the thermal indices before running the automated detection models. This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC) 4.0 License. https://seamap.env.duke.edu/dataset/1462 Oceans,North Atlantic Ocean -63.252503 -59.683002 46.024682 45.813784 2015-01-30 2015-02-02 Scientific names are based on the Integrated Taxonomic Information System (ITIS). species Halichoerus grypus Atlantic gray seal These datasets were used to assess Atlantic grey seal populations and to compare and test wildlife survey methods. notPlanned Alexander Seymour Duke University Marine Lab Primary contact alexander.c.seymour@duke.edu NA NA NA Alexander Seymour owner NA zd_1462 2025-09-11T15:39:06-04:00 dataset Seymour, A. 2017. Atlantic grey seal breeding colonies in Hay and Saddle Islands, Nova Scotia. Version 1.0.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/a563f231. Seymour, A., Dale, J., Hammill, M., Halpin, P and Johnston, D. 2017. Automated detection and enumeration of marine wildlife using unmanned aircraft systems (UAS) and thermal imagery. Scientific Reports7: 45127. OBIS-SEAMAP Dataset Page UTF-8 Interactive map https://seamap.env.duke.edu/dataset/1462 FGDC Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/1462/fgdc EML Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/1462/eml OBIS-SEAMAP zd_1462 zd_1462