Does prey scarcity increase the risk of wolf attacks on domestic dogs?

Gray wolf (Canis lupus) predation on domestic dogs (Canis familiaris) is a
considerable wolf-human conflict issue in several regions of Europe and
North America but has not been well documented in the scientific
literature. Livestock depredations by wolves may be related to the
abundance of wild prey. Regardless of the presumed motivations of wolves
for attacking dogs (likely due to interference competition and predation),
the abundance of wild prey populations may also influence the risk of wolf
attacks on dogs. We examined whether the annual number of tatal attacks by
wolves on dogs was related to the abundance of primary prey, including
wild boar (Sus scrofa) and roe deer (Capreolus capreolus) in Estonia, as
well as the abundance of moose (Alces alces) in Finland. Statistical
models resulted in significant negative relationships, thus providing
evidence that the risk of attacks in both house yards (Estonia) and
hunting situations (Finland) was highest when the density of wild prey was
low. Wild ungulates cause damage to agriculture and forestry, but they
seem to mitigate conflicts between wolves and humans; therefore, it is
necessary to develop a holistic, multispecies management approach in which
the importance of wild ungulates for large carnivores is
addressed.