A bit earlier this year I got a paper published in Evolution and Human Behavior. In general, the paper investigates how pastoral slaughter strategies are shaped in the reindeer husbandry in Norway.
From a governmental point of view, the reindeer husbandry is characterised by overstocking of reindeer (especially in the northern parts of the country). As a consequence, the Norwegian government has initiated a subsidy policy aiming to stimulate households to slaughter as many reindeer as possible so as to reduce the number of reindeer and thereby create a sustainable reindeer husbandry. Nevertheless, in spite of this subsidy policy, the number of reindeer has increased rather than decreased. This indicates that reindeer herders do not make slaughter related decisions from a purely economic point of view.