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Journal Article

Species classification of Antarctic pack‐ice seals using very high‐resolution imagery

Michael Wethington; Bento C. Gonçalves; Emma Talis; Bilgecan Şen; Heather J. Lynch
Marine Mammal Science · Vol. 40, Issue 2 · 2024

Abstract

We introduce a semiautomated machine learning method that employs high‐resolution imagery for the species‐level classification of Antarctic pack‐ice seals. By incorporating the spatial distribution of hauled‐out seals on ice into our analytical framework, we significantly enhance the accuracy of species identification. Employing a Random Forest model, we achieved 97.4% accuracy for crabeater seals and 98.0% for Weddell seals. To further refine our classification, we included three linearity measures: mean distance to a group's regression line, straightness index, and sinuosity index. Additional variables, such as the number of neighboring seals within a 250 m radius and distance of individual seals to the sea ice edge, also contributed to improved accuracy. Our study marks a significant advancement in the development of a cost‐effective, unified Antarctic seal monitoring system, enhancing our understanding of seal spatial behavior and enabling more effective population tracking amid environmental changes.

Bibliographic Information

JournalMarine Mammal Science
PublisherWiley
Publication Date2024-04-01
Publication Year2024
Volume40
Issue2
Document TypeJournal Article
Print ISSN0824-0469
eISSN1748-7692
DOI10.1111/mms.13088
SubjectMarine Biology

Access Information

NARA Access Coverage1997-01-01~Current
Journal Homepagehttps://onlinelibrary.wiley.com/loi/17487692
Publisher PageOpen Publisher Page
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