pone.0229402.g001.tif (1.89 MB)

Sample frame established in the Mississippi Delta.

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posted on 2020-02-26, 18:25 authored by Paul C. Burr, Jimmy L. Avery, Garrett M. Street, Bronson K. Strickland, Brian S. Dorr

Blue polygons represent aquaculture present during the study and black boxes within the sample frame represent aquaculture clusters randomly selected for surveys. Aerial surveys were conducted on these selected clusters to collect presence data of double-crested cormorants (Phalacrocorax auritus), great egrets (Ardea alba), and great blue herons (A. herodias). A total of 35 surveys were completed over the months of October through April of three years, 2015–2017.