ImageJ counts: Spectacled eider winter aerial survey 2020 counts from photos made using ImageJ software

• Main Authors: Stellrecht, Neesha, Rizzolo, Daniel
• Format: Dataset
• Language: unknown
• Published: U.S. Fish and Wildlife Service 2021
• Subjects: biota, environment, eiders, Spectacled Eiders, monitoring, Population and Habitat Evaluation/Projection; Bering Sea
• Online Access: https://dx.doi.org/10.7944/p9rdyfux; https://ecos.fws.gov/ServCat/Reference/Profile/135487

We annotated a subset of photos taken during the 2020 March 03-04 aerial survey of spectacled eiders in the Bering Sea using ImageJ software (version 1.52a; https://imagej.nih.gov/ij/download.html). Annotations made to the images were used to count individual spectacled eiders in plumage color categories. Counts from each image are compiled in data table spei_imagej_winter_2020_counts.csv. Each record is a flock that was annotated and counted in ImageJ and columns are counts within each count category, which are based on photo quality and eider plumage color. Protocols for annotating photos to determine counts are described in the standard operating procedure document filename sop_spei_photo_analysis_20210709.pdf submitted as a product under this project. Louise Bishop processed survey photos in ImageJ.