May 23, 2021
Yellowstone wolves stalking bison by Daniel Stahler
In harm’s way: Wolves may not risk ‘prey switching’ ecologists say
Ecologists have long observed predators pursue disproportionately more of a plentiful prey species, and less of scarce prey, but change to the latter if it becomes relatively more abundant. Known as “prey switching,” this phenomenon is ecologically important, because it helps to stabilize wildlife populations. But what if the more abundant prey is more dangerous?
Utah State University researchers Aimee Tallian and Dan MacNulty report Yellowstone wolves seldom hunt bison, though plentiful, and instead, pursue elk, a scarcer, yet safer target.
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