Photogrammetry-based body condition for monitoring an Arctic marine mammal experiencing habitat loss
KD Rode,
A Fischbach,
M Synnott
et al.
Abstract:Monitoring animal body condition can provide insight on population responses to environmental change. Pacific walruses Odobenus rosmarus divergens are experiencing loss of their sea ice habitat which has decreased the time females spend foraging during a critical period of pregnancy and lactation. Here we investigated the potential for body condition to track demographic change and be monitored via 2-dimensional aerial imagery by (1) examining whether walrus growth and body mass tracked estimated historic demo… Show more
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