Fredrik Christiansen

Multiple strategies and cues define baleen whale migration

Migration is a do-or-die life-history strategy, yet factors shaping it remain poorly studied in many marine taxa, as direct observations are difficult. Building on animal migration theory, we used satellite tracking data from 21 southern right whales tagged in Aotearoa New Zealan...

Automated morphometric modelling of an endangered freshwater cetacean from unscaled UAV imagery using an internal scaling framework

With the rapid advancement of drone technology, aerial photogrammetry has been increasingly applied to morphometric research, particularly for endangered species, owing to its fully non-invasive nature. Photogrammetry-derived morphometric models (e.g., three-dimensional reconstru...