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dc.contributor.authorTallian, Aimee Grace
dc.contributor.authorOrdiz Fernandez, Andres Avelino
dc.contributor.authorZimmermann, Barbara
dc.contributor.authorSand, Håkan
dc.contributor.authorWikenros, Camilla
dc.contributor.authorWabakken, Petter
dc.contributor.authorBergqvist, Göran
dc.contributor.authorKindberg, Jonas
dc.description.abstractLarge carnivores play a key ecological role in nature, yet quantifying the effects of predation at large spatiotemporal scales remains challenging. Wolves and brown bears have recovered in Sweden, where they share the same staple prey, moose. This ecosystem is representative of the Eurasian boreal realm, and makes an interesting case study for exploring the use of hunter-collected observation data to understand the ecological effects of large carnivore recovery in human-dominated ecosystems. We used over 50 million hours of moose ob-servation data collected by “citizen scientists” (i.e., moose hunters) between 2000 and 2017 to evaluate the role of recovering bear and wolf populations on an important ungulate vital rate, calf/cow ratio (the number of observed calves per female in fall). Calf/cow ratios were negatively correlated with both wolf and bear densities, suggesting that summer calf survival decreased via predation. Calf/cow ratios decreased by 7% and 17% in the northern and southern areas where bears and wolves were allopatric, respectively. Where wolves and bears were sympatric, the effect of predator densities was additive; calf/cow ratios decreased by 18%. However, both calf/cow ratios and moose densities declined over the last ~20 years across Sweden, including areas where wolves and bears were absent. While recolonizing large carnivores affected ungulate vital rates in Sweden’s human-dominated landscape, they were likely not the primary driver of long-term moose population trends. Our results re-inforce that citizen-collected data are a useful wildlife monitoring tool that help understand ecological processes, including the effects of recovering carnivores on prey populations. Brown bear Calf/cow ratio Carnivore recovery Predator-prey interactions Wolf
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleThe return of large carnivores: Using hunter observation data to understand the role of predators on ungulate populationsen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.subject.nsiVDP::Zoologiske og botaniske fag: 480
dc.subject.nsiVDP::Zoology and botany: 480
dc.source.journalGlobal Ecology and Conservationen_US
dc.relation.projectAndre: Swedish University of Agricultural Sciences (SLU)
dc.relation.projectMiljødirektoratet: Scandinavian Brown Bear Research Project (SBBRP)
dc.relation.projectAndre: Swedish Environmental Protection Agency
dc.relation.projectMiljødirektoratet: Scandinavian Wolf Research Project (SKANDULV)
dc.relation.projectEgen institusjon: Inland Norway University of Applied Sciences
dc.relation.projectEgen institusjon: Norwegian institute for nature research (NINA)
dc.relation.projectAndre: Swedish Association for Hunting and Wildlife Management
dc.relation.projectNorges forskningsråd: xxxxxx
dc.relation.projectAndre: Worldwide Fund for Nature (Sweden)
dc.relation.projectAndre: Office of Environmental Affairs in Innlandet County

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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal