Browsing USN Open Archive by Author "Zedrosser, Andreas"
Now showing items 1-20 of 65
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A "clearcut" case? Brown bear selection of coarse woody debris and carpenter ants on clearcuts
Frank, Shane C.; Steyaert, Sam; Swenson, Jon; Storch, Ilse; Kindberg, Jonas; Barck, Hanna; Zedrosser, Andreas (Journal article; Peer reviewed, 2015-07-05)Forest management alters habitat characteristics, resulting in various effects among and within species. It is crucial to understand how habitat alteration through forest management (e.g. clearcutting) affects animal ... -
Are nonsocial species more social than we think? Seasonal patterns in sociality in a solitary terrestrial carnivore
Heeres, Rick; Leclerc, Martin; Frank, Shane; Kopatz, Alexander; Pelletier, Fanie; Zedrosser, Andreas (Peer reviewed; Journal article, 2024)Animal sociality, the extent and manner in which conspecifics associate with each other, ultimately affects an individual's survival and reproductive success. It is shaped by the spatiotemporal configuration and composition ... -
Baiting and feeding mammalian game species: current practices in North America and Europe
Holm, Tor-Egil (Master thesis, 2022)It is commonly stated in the scientific literature that baiting and feeding are widespread wildlife management practices. However, it is difficult to determine exactly how widespread these management practices are, and ... -
Bambi i byen: økologien til rådyr i urbane områder. Moss og Råde kommune, Viken fylke
Maciejewska, Zuzanna; Skogli, Janne Ettestad (Master thesis, 2024)Voksende urbanisering fører til fragmentering- og tap av habitat, som medfører at hjortevilt må oppsøke nye hjemmeområder. Økt mattilgang og lavere predasjonstrussel, driver flere rådyr (Capreolus capreolus) til å øke ... -
Bears and berries: species-specific selective foraging on a patchily distributed food resource in a human-altered landscape
Hertel, Anne Gabriela; Steyaert, Sam; Zedrosser, Andreas; Mysterud, Atle; Lodberg-Holm, Hanna Kavli; Gelink, Henriette Wathne; Kindberg, Jonas; Swenson, Jon (Journal article; Peer reviewed, 2016)When animals are faced with extraordinary energyconsuming events, like hibernation, finding abundant, energy-rich food resources becomes particularly important. The profitability of food resources can vary spatially, ... -
Behavioral correlates of supplementary feeding of wildlife: Can general conclusions be drawn?
Steyaert, Sam; Kindberg, Jonas; Jerina, Klemen; Krofel, Miha; Stergar, Matija; Swenson, Jon; Zedrosser, Andreas (Journal article; Peer reviewed, 2014-10-12)Supplementary feeding is a common, but controversial, tool in wildlife management, because it can benefit both humans and wildlife (e.g., increased wildlife densities), but has certain downsides (e.g., increased disease ... -
Behavioural responses of brown bears to roads and hunting disturbance
Brown, Ludovick; Zedrosser, Andreas; Kindberg, Jonas; Pelletier, Fanie (Peer reviewed; Journal article, 2024)Harvest regulations commonly attenuate the consequences of hunting on specific segments of a population. However, regulations may not protect individuals from nonlethal effects of hunting and their consequences remain ... -
Berry production drives bottom – up effects on body mass and reproductive success in an omnivore
Hertel, Anne Gabriela; Bischof, Richard; Langval, Ola; Mysterud, Atle; Kindberg, Jonas; Swenson, Jon; Zedrosser, Andreas (Journal article; Peer reviewed, 2017)Obligate herbivores dominate studies of the eff ects of climate change on mammals, however there is limited empirical evidence for how changes in the abundance or quality of plant food aff ect mammalian omnivores. Omnivores ... -
Brown bears possess anal sacs and secretions may code for sex
Rosell, Frank; Jojola, Susan M.; Ingdal, Kristian; Lassen, Bård Andreas; Swenson, Jon; Arnemo, Jon Martin; Zedrosser, Andreas (Journal article; Peer reviewed, 2010-09-14)Olfactory communication occurs in carnivores and many scent-mark with anal gland secretions (AGS), which contain a variety of information including sex-related cues. Currently, there is disagreement about whether bear ... -
Can bears bear climatic change?
Kossen, Christien (Master thesis, 2023)Climate change is a topic of global importance, affecting species and ecosystems worldwide. Climatic variations and changes, like anthropogenic changes, have vast effects on plant-life, wildlife, and fungi alike. Nordic ... -
Can concentrations of steroid hormones in brown bear hair reveal age class?
Cattet, Marc; Stenhouse, Gordon B.; Boulanger, John; Janz, David M.; Kapronczai, Luciene; Swenson, Jon; Zedrosser, Andreas (Journal article; Peer reviewed, 2018)Although combining genetic and endocrine data from non-invasively collected hair samples has potential to improve the conservation of threatened mammals, few studies have evaluated this opportunity. In this study, we ... -
Challenges of managing a European brown bear population; lessons from Sweden, 1943–2013
Swenson, Jon; Schneider, Michael; Zedrosser, Andreas; Söderberg, Arne; Franzén, Robert; Kindberg, Jonas (Journal article; Peer reviewed, 2017)Adaptive management’, which has been defined as the repeated iteration between management action, scientific assessment and revised management action, leading to a strengthened foundation for management, is required by ... -
Compatibility of preparatory procedures for the analysis of cortisol concentrations and stable isotope (δ13C, δ15N) ratios: a test on brown bear hair
Sergiel, Agnieszka; Hobson, Keith A.; Janz, David M.; Cattet, Marc; Selva, Nuria; Kapronczai, Luciene; Gryba, Chantel; Zedrosser, Andreas (Journal article; Peer reviewed, 2017)The measurement of naturally occurring glucocorticoids and stable isotopes of several elements has gained importance in wildlife studies in recent decades and opened a myriad of ecological applications. Cortisol and stable ... -
Correcting for enzyme immunoassay changes in long term monitoring studies
Wilson, Abbey E.; Sergiel, Agnieszka; Selva, Nuria; Swenson, Jon; Zedrosser, Andreas; Stenhouse, Gordon; Janz, David M. (Peer reviewed; Journal article, 2021)Enzyme immunoassays (EIAs) are a common tool for measuring steroid hormones in wildlife due to their low cost, commercial availability, and rapid results. Testing technologies improve continuously, sometimes requiring ... -
Couch potatoes do better: Delayed dispersal and territory size affect the duration of territory occupancy in a monogamous mammal
Mayer, Martin; Zedrosser, Andreas; Rosell, Frank (Journal article; Peer reviewed, 2017)In territorial, socially monogamous species, the establishment and defense of a terri - tory are an important strategy to maximize individual fitness, but the factors responsi - ble for the duration of territory occupancy ... -
Determinants of lifetime reproduction in female brown bears: early body mass, longevity, and hunting regulations
Zedrosser, Andreas; Pelletier, Fanie; Bischof, Richard; Festa-Bianchet, Marco; Swenson, Jon (Journal article; Peer reviewed, 2013)In iteroparous mammals, conditions experienced early in life may have long‐lasting effects on lifetime reproductive success. Human‐induced mortality is also an important demographic factor in many populations of large ... -
Do ingredient and nutrient intake reveal individual dietary specialization in an omnivorous carnivore, the brown bear?
De Cuyper, Annelies; Strubbe, Diederik; Clauss, Marcus; Lens, Luc; Zedrosser, Andreas; Steyaert, Sam; Kopatz, Alexander; Janssens, Geert P. J. (Peer reviewed; Journal article, 2024)Generalist populations often harbor individual dietary specialists. Whether using a narrower set of resources than the population (= specialization) affects specialists' nutrient intake remains underexplored. We evaluated ... -
Do Scandinavian brown bears approach settlements to obtain high-quality food?
Elfström, Marcus; Davey, Marie Louise; Zedrosser, Andreas; Müller, Martin; De Barba, Marta; Støen, Ole-Gunnar; Miquel, Christian; Taberlet, Pierre; Hackländer, Klaus; Swenson, Jon (Journal article; Peer reviewed, 2014)Large carnivores that approach human settlements are usually considered a threat to human property and safety. The prevailing paradigm, that such ‘problem’ animals approach settlements in search of food, ignores their ... -
Does despotic behavior or food search explain the occurrence of problem brown bears in Europe?
Elfström, Marcus; Zedrosser, Andreas; Jerina, Klemen; Støen, Ole-Gunnar; Kindberg, Jonas; Budic, Lara; Jonozovic, Marko; Swenson, Jon (Journal article; Peer reviewed, 2014)Bears foraging near human developments are often presumed to be responding to food shortage, but this explanation ignores social factors, in particular despotism in bears. We analyzed the age distribution and body condition ... -
Ecological implications from spatial patterns in human-caused brown bear mortality
Steyaert, Sam; Zedrosser, Andreas; Elfström, Marcus; Ordiz Fernandez, Andres Avelino; Leclerc, Martin; Frank, Shane C.; Kindberg, Jonas; Støen, Ole-Gunnar; Brunberg, Sven; Swenson, Jon (Journal article; Peer reviewed, 2016)Humans are important agents of wildlife mortality, and understanding such mortality is paramount for effective population management and conservation. However, the spatial mechanisms behind wildlife mortality are often ...