We have quite a lot of experience with the decomposition of artiodactyl carcasses because we're soft-hearted about offing our aged sheep. Possibly to avoid setting a precedent and finding our aged selves getting sent for thanatization as
Meanwhile back in Norway, the local meat bonanza on this remote section of birch and heather tundra was noticed and exploited by a variety of carnivores including raven Corvus corax, hooded crow C. cornix, golden eagle Aquila chrysaetos, red fox Vulpes vulpes and arctic fox V. lagopus [not Alopex no more] and wolverine Gulo gulo. You may be sure that there was a pecking order here: the top carnivores would be quite happy to eat crow. The main point of the Royal Society paper here considered is that rodents [root vole Microtus oeconomus, lemming Lemmus lemmus, bank vole Myodes glareolus, field vole Microtus agrestis and the grey red-backed vole Myodes rufocanus] steered clear of the site through 2017 and only returned the following year after the Big Boys had stripped the bones and dispersed.
Although these vertebrates are the most obvious beneficiaries / agents / actors in the process, it is important to acknowledge the importance of bacteria and fungi in the process: the stage names give clues about this activity - fresh - bloat - active decay - advanced decay - dry decay. Ligaments, hooves, bones, hair all persist long after the wobbly bits have gone. You might keep your eeeeuuw reflexes under control to view [smell-free!!] this clip from A Zed and Two Noughts the colourful and deeply peculiar film by Peter Greenaway scored by Michael Nyman. It's 2 minutes long and shows various corpses, from Apple to Zebra in busy-busy time-lapse, decomposing to Nyman's composing [Nyman & Greenaway bloboprev].
an earlier study the same research group found that "scavengers direct seed dispersal towards ungulate carcasses", they were particularly interested to find viable crowberry Empetrum nigrum [L] seeds from crow splat on and around the cadavers. It's hard for crowberry to get a start in the niche-filled natural ecosystem: the shoot has to fight up through the moss and heather to get enough light to photosynthesis. A gert big reindeer body, otoh, squashes the local plants and deprives them of light for several weeks and this levels the playing field for crowberry and other minority species. Who else benefits from the change in the local landscape? Meadow pipit Anthus pratensis for starters: they were observed picking off the blow-fly Lucilla sericata etc. larvae for dinner.