Wolverine populations are naturally sparse and difficult to monitor, making evidence-based conservation challenging — but advances in non-invasive surveying are improving our understanding.
Population monitoring methods themselves carry welfare implications for wolverines. Traditional approaches — live trapping, radiocollar attachment, and mark-recapture — involve handling stress, anesthesia risks, and the burden of carrying tracking devices in extreme cold. Non-invasive genetic sampling via hair snags eliminates handling stress entirely. However, wolverines with malfunctioning collars have been documented suffering cold-related injuries where collar hardware conducted cold to the skin. The shift toward camera-based and genetic monitoring is a welfare improvement. Underfunding of monitoring programs also has welfare consequences: without data, population declines go undetected and conservation interventions are delayed.