Blar i Brage NMBU på forfatter "Bischof, Richard"
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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) -
Determinants of scent-marking behavior by Asiatic cheetahs (Acinonyx jubatus venaticus) at camera traps in Iran
Enger, Kristian Bones (Master thesis, 2021)Scent marking is a common behaviour in large carnivores and serves a multiple of ecological purposes. It functions as a method of communication, either to warn off intruders, attract mates or to mark territory. In surveys ... -
Disentangling the drivers of European badger (Meles meles) activity at multiple temporal scales
Bartra Cabré, Laura (Master thesis, 2020)Animals shape their activity in response to several processes that take place at different timescales. It stands to reason that the assessment of activity at multiple temporal scales will enhance the understanding of its ... -
Does supplementary feeding of arctic fox (Vulpes lagopus) in Norway boost reproductive success?
Stokkenes, Aina-Elise (Master thesis, 2016-08-31)Ekstra fôring er eitt av fleire bevaringstiltak som har blitt brukt for å auke dyrs levedyktigheit. Supplerande fôring har hatt ulikt resultat basert på dyrs åtferd, intensitet og tilpassing av tiltak. Fjellrev er i Noreg ... -
Effects of resource availability on Arctic fox (Vulpes lagopus) offspring sex ratios
Flølo, Linn Marie (Master thesis, 2022)The sex ratio of animals at birth has long been a topic of genetic, evolutionary, and biological interest. In polygynous species, mothers in good condition are typically expected to produce more males, while mothers in ... -
Efficient estimation of large-scale spatial capture–recapture models
Turek, Daniel; Milleret, Cyril Pierre; Ergon, Torbjørn; Brøseth, Henrik; Dupont, Pierre; Bischof, Richard; de Valpine, Perry (Journal article; Peer reviewed, 2021)Capture–recapture methods are a common tool in ecological statistics, which have beenextended to spatial capture–recapture models for data accompanied by location information. However,standard formulations of these models ... -
En test av olfaktoriske tiltrekningsstoffers effekt på oppdagelsessannsynlighet gjennom bruk av viltkamera
Bakken, Sigurd (Master thesis, 2018)Over store deler av verden har man opplevd en dramatisk tilbakegang av de store toppredatorene. Minsket predasjon fra toppredatorer kan lede til minsket intraguild konkurranse og en økning i tetthet av mesopredatorer. Denne ... -
Estimates of wolf density, abundance, and population dynamics in Scandinavia, 2012 - 2021
Milleret, Cyril; Dupont, Pierre; Åkesson, Mikael; Brøseth, Henrik; Kindberg, Jonas; Bischof, Richard (MINA fagrapport;72, Report, 2021)Background The Scandinavian wolf (Canis lupus) population is being monitored annually using non-invasive genetic sampling (NGS) and recovery of dead individuals. DNA extracted from faeces, urine, hair, and tissue is used ... -
Estimating abundance with interruptions in data collection using open population spatial capture–recapture models
Milleret, Cyril Pierre; Dupont, Pierre; Chipperfield, Joseph; Turek, Daniel; Brøseth, Henrik; Gimenez, Olivier; de Valpine, Perry; Bischof, Richard (Peer reviewed; Journal article, 2020)The estimation of population size remains one of the primary goals and challenges in ecology and provides a basis for debate and policy in wildlife management. Despite the development of efficient noninvasive sampling ... -
Estimating and analysing the occupancy of the introduced shrew Crocidura russula in Norway
Talleraas, Simen Moflag (Master thesis, 2021)The Greater white-toothed shrew (Crocidura russula) is a shrew that was discovered in Norway in 2017. The species is of concern because it is invasive and has a history of environmental impact. It is native around the ... -
Estimating and forecasting spatial population dynamics of apex predators using transnational genetic monitoring
Bischof, Richard; Milleret, Cyril Pierre; Dupont, Pierre; Chipperfield, Joseph; Tourani, Mahdieh; Ordiz Fernandez, Andres Avelino; de Valpine, Perry; Turek, Daniel; Royle, J. Andrew; Gimenez, Olivier; Flagstad, Øystein; Åkesson, Mikael; Svensson, Linn; Brøseth, Henrik; Kindberg, Jonas (Peer reviewed; Journal article, 2020)The ongoing recovery of terrestrial large carnivores in North America and Europe is accompanied by intense controversy. On the one hand, reestablishment of large carnivores entails a recovery of their most important ... -
Estimating densities of red foxes using non-invasive genetic sampling and spatial capture-recapture modeling
Lindsø, Lars Kristian (Master thesis, 2020)Spatial capture-recapture modelling (SCR) is a powerful tool for estimating densities, population size and space use of elusive animals. However, SCR modeling has not been widely applied to ecologically important mesopredators ... -
Estimating red fox density using non-invasive genetic sampling and spatial capture–recapture modelling
Lindsø, Lars; Dupont, Pierre; Rød-Eriksen, Lars; Andersskog, Ida Pernille Øystese; Ulvund, Kristine R.; Flagstad, Øystein; Bischof, Richard; Eide, Nina Elisabeth (Peer reviewed; Journal article, 2021)Spatial capture–recapture modelling (SCR) is a powerful tool for estimating density, population size, and space use of elusive animals. Here, we applied SCR modelling to non-invasive genetic sampling (NGS) data to estimate ... -
Estimating spatially variable and density-dependent survival using open-population spatial capture–recapturemodels
Milleret, Cyril Pierre; Dey, Soumen; Dupont, Pierre; Brøseth, Henrik; Turek, Daniel; Bischof, Richard (Peer reviewed; Journal article, 2022)Open-population spatial capture–recapture (OPSCR) models use the spatialinformation contained in individual detections collected over multiple consec-utive occasions to estimate not only occasion-specific density, but ... -
Estimating the size of the Scandinavian wolf population with spatial capture-recapture and conversion factors
Bischof, Richard; Milleret, Cyril; Dupont, Pierre; Chipperfield, Joseph; Åkesson, Mikael; Brøseth, Henrik; Kindberg, Jonas (MINA fagrapport;57, Report, 2019)Monitoring of wolves (Canis lupus) in Scandinavia is a coordinated effort between Swedish and Norwegian management authorities. Since 2012/13, the size of the Scandinavian wolf population is being estimated indirectly by ... -
Fine-scale assessment of responses to roads by red foxes
Kuskemoen, Emma (Master thesis, 2020)Anthropogenic alterations are prevalent in most landscapes today, and roads have a distinct impact on the ecosystems they intersect and on the wildlife populations inhabiting them. Understanding and quantifying wildlife ... -
GPS collars have an apparent positive effect on the survival of a large carnivore
Milleret, Cyril Pierre; Bischof, Richard; Dupont, Pierre; Brøseth, Henrik; Odden, John; Mattisson, Jenny (Peer reviewed; Journal article, 2021)Are instrumented animals representative of the population, given the potential bias caused by selective sampling and the influence of capture, handling and wearing bio-loggers? The answer is elusive owing to the challenges ... -
Heritability of head size in a hunted large carnivore, the brown bear (Ursus arctos)
Rivrud, Inger Maren; Frank, Shane; Bischof, Richard; Mysterud, Atle; Steyaert, Sam; Hertel, Anne Gabriela; Hagen, Snorre; Eiken, Hans Geir; Swenson, Jon; Zedrosser, Andreas (Journal article; Peer reviewed, 2019)Wild animal populations experience selection pressures from both natural and anthropogenic sources. The availability of extensive pedigrees is increasing along with our ability to quantify the heritability and evolvability ... -
Home ranges of domestic cats (Felis catus) in south-eastern Norway
Bachmann, Bettina (Master thesis, 2020)Small GPS units were used to track pet cats in south-eastern Norway from august 2019 to November 2019, in order to obtain home range size estimates. In total, 111 (51 females and 60 males) cats were tracked using their ... -
Humans and climate change drove the Holocene decline of the brown bear
Albrecht, Jorg; Barton, Kamil A; Selva, Nuria; Sommer, Robert S; Swenson, Jon; Bischof, Richard (Journal article; Peer reviewed, 2017)