Large carnivores provide ecosystem and cultural benefits but also impose costs on hunters due to the competition for game. The aim of this paper was to identify the marginal impact of lynx (Lynx lynx) and wolf (Canis lupus) on the harvest of roe deer (Capreolus capreolus) in Sweden and the value of this impact. We applied a production function approach, using a bioeconomic model where the annual number of roe deer harvested was assumed to be determined by hunting effort, abundance of predators, availability of other game, and winter severity. The impact of the predators on the roe deer harvests was estimated econometrically, and carnivore marginal impacts were derived. The results showed that if the roe deer resource was harvested under open access, the marginal cost in terms of hunting values foregone varied between different counties, and ranged between 18,000 and 58,000 EUR for an additional lynx family, and 79,000 and 336,000 EUR for an additional wolf individual. Larger marginal costs of the wolf, in terms of the impact on roe deer hunting, were found in counties where the hunting effort was high and the abundance of moose (Alces alces) was low. If instead, hunters could exert private property rights to the resource, the average marginal cost was about 20% lower than it would have been if there was open access, and the difference in wolf impact between counties with high and low moose density was smaller. Together, results suggest that the current plan for expanding the wolf population in south Sweden can be associated with a substantial cost.

大型食肉动物不仅为生态系统和文化带来好处，而且由于竞争而使猎人付出了代价。本文的目的是确定天猫（Lynx lynx）和狼（Canis lupus）对the（Capreolus capreolus）收成的边际影响。）和此影响的价值。我们采用了一种生产函数方法，并使用了一种生物经济模型，其中假定每年的ro捕捞数量是由狩猎努力，捕食者的丰富性，其他猎物的可利用性以及冬季的严峻程度决定的。捕食者对the鹿收成的影响是通过计量经济学估算的，并得出了食肉动物的边际影响。结果表明，如果在开放获取的条件下收获access资源，则在不同县之间因狩猎价值而放弃的边际成本会有所不同，一个额外的山猫家庭的边际成本在18,000至58,000欧元之间，另外一个山猫家庭的这一边际成本在79,000至336,000欧元之间狼个人。就猎鹿的影响而言，狼的边际成本较高，（Alces alces）很低。如果相反，猎人可以对资源施加私有财产权，则平均边际成本比开放获取的情况要低20％左右，高低驼鹿密度县之间的狼影响差异较小。总而言之，结果表明，当前在瑞典南部扩大狼群的计划可能会带来可观的成本。