An accurate and adaptable photogrammetric approach for estimating the mass and body condition of pinnipeds using an unmanned aerial system

• Main Authors: Douglas J Krause, Jefferson T Hinke, Wayne L Perryman, Michael E Goebel, Donald J LeRoi
• Format: Article in Journal/Newspaper
• Language: unknown
• Subjects: Hydrurga; Antarc*; Antarctica; Hydrurga leptonyx; Leopard Seal; Leopard Seals
• Online Access: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0187465; https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0187465&type=printable

Measurements of body size and mass are fundamental to pinniped population management and research. Manual measurements tend to be accurate but are invasive and logistically challenging to obtain. Ground-based photogrammetric techniques are less invasive, but inherent limitations make them impractica...