Browsing Artikkel - fagfellevurdert vitenskapelig / Articles - peer-reviewed by Subject "Ursus arctos"
Now showing items 1-19 of 19
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Chewing lice Trichodectes pinguis pinguis in Scandinavian brown bears ( Ursus arctos )
(Journal article; Peer reviewed, 2016)In April 2014 and 2015, we noted localized alopecia (neck, forelimbs, and chest) and hyperpigmentation on two adult brown bears (Ursus arctos) captured in central-south Sweden for ecological studies under the Scandinavian ... -
Effects of different doses of medetomidine and tiletamine-zolazepam on the duration of induction and immobilization in free- ranging yearling brown bears (Ursus arctos)
(Journal article; Peer reviewed, 2012)We compared anesthetic protocols with different doses of tiletamine-zolazepam (TZ) combined with medetomidine (M) for 288 yearling brown bear (Ursus arctos) immobilizations with the objective of finding a combination of ... -
Effects of large carnivores, hunter harvest, and weather on the mortality of moose calves in a partially migratory population
(Peer reviewed; Journal article, 2023)Survival of juvenile ungulates represents an important demographic parameter that influences population dynamics within ecosystems. In many ecological systems, the mortality of juvenile ungulates is influenced by various ... -
Extrinsic and intrinsic factors drive the timing of gestation and reproductive success of Scandinavian brown bears
(Peer reviewed; Journal article, 2022)Climate change is altering the reproductive phenology of many organisms, but the factors that influence the timing of gestation in ursids are still poorly understood. Higher temperatures in spring are already causing an ... -
Hibernation and plasma lipids in free-ranging brown bears-implications for diabetes
(Peer reviewed; Journal article, 2023)Brown bears (Ursus arctos) prepare for winter by overeating and increasing adipose stores, before hibernating for up to six months without eating, drinking, and with minimal movement. In spring, the bears exit the den ... -
Internal hydrocephalus combined with pachygyria in a wild-born brown bear cub
(Peer reviewed; Journal article, 2009)An abandoned wild-born male brown bear (Ursus arctos) cub of the year was found and subsequently placed in a zoo. At 7 months of age, the cub showed first signs of ataxia, and at 13 months of age, it was unable to move the ... -
Landscape of fear or landscape of food? Moose hunting triggers an antipredator response in brown bears
(Peer reviewed; Journal article, 2023)Hunters can affect the behavior of wildlife by inducing a landscape of fear, selecting individuals with specific traits, or altering resource availability across the landscape. Most research investigating the influence of ... -
Lead exposure in brown bears is linked to environmental levels and the distribution of moose kills
(Peer reviewed; Journal article, 2023)Lead (Pb) is heterogeneously distributed in the environment and multiple sources like Pb ammunition and fossil fuel combustion can increase the risk of exposure in wildlife. Brown bears (Ursus arctos) in Sweden have higher ... -
Of wolves and bears: Seasonal drivers of interference and exploitation competition between apex predators
(Peer reviewed; Journal article, 2021)Competition between apex predators can alter the strength of top-down forcing, yet we know little about the behavioral mechanisms that drive competition in multipredator ecosystems. Interactions between predators can be ... -
Of wolves and bears: Seasonal drivers of interference and exploitation competition between apex predators
(Peer reviewed; Journal article, 2022)Competition between apex predators can alter the strength of top-down forcing, yet we know little about the behavioral mechanisms that drive competition in multipredator ecosystems. Interactions between predators can be ... -
Phenology of brown bear breeding season and related geographical cues
(Peer reviewed; Journal article, 2020)Knowledge about breeding biology is often incomplete in species with complex reproductive strategies. The brown bear Ursus arctos is a polygamous seasonal breeder inhabiting a wide variety of habitats and environmental ... -
Physiological evidence for a human-induced landscape of fear in brown bears (Ursus arctos)
(Journal article; Peer reviewed, 2015)Human persecution is a major cause of mortality for large carnivores. Consequently, large carnivores avoid humans, but may use human-dominated landscapes by being nocturnal and elusive. Behavioral studies indicate that ... -
Physiological reactions to capture in hibernating brown bears
(Journal article; Peer reviewed, 2016)Human disturbance can affect animal life history and even population dynamics. However, the consequences of these disturbances are difficult to measure. This is especially true for hibernating animals, which are highly ... -
Platelet function in brown bear (Ursus arctos) compared to man
(Journal article; Peer reviewed, 2010)Background: Information on hemostasis and platelet function in brown bear (Ursus arctos) is of importance for understanding the physiological, protective changes during hibernation. Objective: The study objective was to ... -
Seasonal variation in haematological and biochemical variables in free-ranging subadult brown bears (Ursus arctos) in Sweden
(Journal article, 2015)Background: Free-ranging brown bears exhibit highly contrasting physiological states throughout the year. They hibernate 6 months of the year, experiencing a decrease in body temperature, heart rate, respiratory rate and ... -
Translational implications of bradyarrhythmia in hibernating brown bears
(Peer reviewed; Journal article, 2023)The brown bear Ursus arctos undergoes exceptional physiological adaptions during annual hibernation that minimize energy consumption, including profound decrease in heart rate, cardiac output, and respiratory rate. These ... -
What does the fox say? Arctic fox vocalization and associated den behaviours
(Peer reviewed; Journal article, 2024)Foxes (Vulpes spp.) are small, solitary canids with relatively low social complex-ity compared to more gregarious canids, such as wolves and dogs. They are, therefore, expected to have a relatively simple ... -
Wolf habitat selection when sympatric or allopatric with brown bears in Scandinavia
(Peer reviewed; Journal article, 2020)Habitat selection of animals depends on factors such as food availability, landscape features, and intraand interspecific interactions. Individuals can show several behavioral responses to reduce competition for habitat, ... -
Wolves, people, and brown bears influence the expansion of the recolonizing wolf population in Scandinavia
(Journal article; Peer reviewed, 2015)Interspecific competition can influence the distribution and abundance of species and the structure of ecological communities and entire ecosystems. Interactions between apex predators can have cascading effects through ...