Browsing Artikkel - fagfellevurdert vitenskapelig / Articles - peer-reviewed by Author "Zimmermann, Barbara"

Now showing items 1-20 of 51

    • A Migratory Northern Ungulate in the Pursuit of Spring: Jumping or Surfing the Green Wave? 

      Bischof, Richard; Loe, Leif Egil; Meisingset, Erling L.; Zimmermann, Barbara; Van Moorter, Bram; Mysterud, Atle (Journal article; Peer reviewed, 2012)
      The forage-maturation hypothesis (FMH) states that herbivores migrate along a phenological gradient of plant development in order to maximize energy intake. Despite strong support for the FMH, the actual relationship ...

    • Activity patterns of predator and prey : a simultaneous study of GPS-collared wolves and moose 

      Eriksen, Ane; Wabakken, Petter; Zimmermann, Barbara; Andreassen, Harry Peter; Arnemo, Jon Martin; Gundersen, Hege; Liberg, Olof; Linnell, John; Milner, Jos M.; Pedersen, Hans Christian; Sand, Håkan; Solberg, Erling J.; Storaas, Torstein (Journal article; Peer reviewed, 2011)
      We studied the simultaneous activity patterns of a breeding wolf, Canis lupus, pair and five adult moose, Alces alces, cows from April to November 2004 in a wolf territory in southeastern Norway. All study animals were GPS ...

    • Age at first reproduction in wolves: Different patterns of density dependence for females and males 

      Wikenros, Camilla; Gicquel, Morgane; Zimmermann, Barbara; Flagstad, Øystein; Åkesson, Mikael (Peer reviewed; Journal article, 2021)
      Age at first reproduction constitutes a key life-history trait in animals and is evolutionarily shaped by fitness benefits and costs of delayed versus early reproduction. The understanding of how intrinsic and extrinsic ...

    • Behavioral responses of wolves to roads: scale-dependent ambivalence 

      Zimmermann, Barbara; Nelson, Lindsey; Wabakken, Petter; Sand, Håkan; Liberg, Olof (Journal article; Peer reviewed, 2014)
      Throughout their recent recovery in several industrialized countries, large carnivores have had to cope with a changed landscape dominated by human infrastructure. Population growth depends on the ability of individuals ...

    • Building a mechanistic understanding of predation with GPS-based movement data 

      Merrill, Evelyn; Sand, Håkan; Zimmermann, Barbara; McPhee, Heather; Webb, Nathan; Hebblewhite, Mark; Wabakken, Petter; Frair, Jacqueline (Journal article; Peer reviewed, 2010)
      Quantifying kill rates and sources of variation in kill rates remains an important challenge in linking predators to their prey. We address current approaches to using GPS-based movement data for quantifying key predation ...

    • Classification of behaviors of free-ranging cattle using accelerometry signatures collected by virtual fence collars 

      Versluijs, Erik; Niccolai, Laura Jeanne; Spedener, Mélanie; Zimmermann, Barbara; Hessle, Anna; Tofastrud, Morten; Devineau, Olivier; Evans, Alina (Peer reviewed; Journal article, 2023)
      Precision farming technology, including GPS collars with biologging, has revolutionized remote livestock monitoring in extensive grazing systems. High resolution accelerometry can be used to infer the behavior of an animal. ...

    • Data to model risks for recolonizing wolves in Scandinavia through the integration of territory presence and human-driven mortalities 

      Recio, Mariano R; Zimmermann, Barbara; Wikenros, Camilla; Zetterberg, Andreas; Wabakken, Petter; Sand, Håkan (Peer reviewed; Journal article, 2018)

    • Decomposing risk: landscape structure and wolf behavior generate different predation patterns in two sympatric ungulates 

      Gervasi, Vincenzo; Sand, Håkan; Zimmermann, Barbara; Mattisson, Jenny; Wabakken, Petter; Linnell, John D.C. (Journal article; Peer reviewed, 2013)
      Recolonizing carnivores can have a large impact on the status of wild ungulates, which have often modified their behavior in the absence of predation. Therefore, understanding the dynamics of reestablished predator–prey ...

    • Den site selection by male brown bears at the population’s expansion front 

      Eriksen, Ane; Wabakken, Petter; Maartmann, Erling; Zimmermann, Barbara (Peer reviewed; Journal article, 2018)

    • Effects of cattle grazing on young spruce trees in boreal production forest 

      Spedener, Mélanie; Mathisen, Karen Marie; Hauer, Josh; Hérault, Rémi; Austrheim, Gunnar; Tofastrud, Morten; Zimmermann, Barbara (Peer reviewed; Journal article, 2024)
      The compatibility of forest livestock grazing with timber production is disputed, as livestock can damage young trees through browsing and trampling. At the same time, livestock grazing might reduce the growth of competing ...

    • Effects of large carnivores, hunter harvest, and weather on the mortality of moose calves in a partially migratory population 

      Ausilio, Giorgia; Sand, Håkan; Wikenros, Camilla; Aronsson, Malin; Milleret, Cyril Pierre; Nordli, Kristoffer; Wabakken, Petter; Eriksen, Ane; Persson, Jens; Maartmann, Erling; Mathisen, Karen Marie; Zimmermann, Barbara (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 ...

    • Environmental and anthropogenic features mediate risk from human hunters and wolves for moose 

      Ausilio, Giorgia; Wikenros, Camilla; Sand, Håkan; Wabakken, Petter; Eriksen, Ane; Zimmermann, Barbara (Peer reviewed; Journal article, 2022)
      Landscape characteristics, seasonal changes in the environment, and daylight conditions influence space use and detection of prey and predators, resulting in spatiotemporal patterns of predation risk for the prey. When ...

    • Functional traits driving species role in the structure of terrestrial vertebrate scavenger networks 

      Sebastián-González, Esther; Morales-Reyes, Zebensui; Botella, Francisco; Naves-Alegre, Lara; Pérez-García, Juan M.; Mateo-Tomás, Patricia; Olea, Pedro P.; Moleón, Marcos; Barbosa, Jomar Magalhães; Hiraldo, Fernando; Arrondo, Eneko; Donázar, José A.; Cortés-Avizanda, Ainara; Selva, Nuria; Lambertucci, Sergio A.; Bhattacharjee, Aishwarya; Brewer, Alexis; Abernethy, Erin; Turner, Kelsey; Beasley, James C.; DeVault, Travis L.; Gerke, Hannah C.; Rhodes, Olin E.; Ordiz, Andres; Wikenros, Camilla; Zimmermann, Barbara; Wabakken, Petter; Wilmers, Christopher C.; Smith, Justine A.; Kendall, Corinne J.; Ogada, Darcy; Frehner, Ethan; Allen, Maximilian L.; Wittmer, Heiko U.; Butler, James R. A.; du Toit, Johan T.; Margalida, Antoni; Oliva-Vidal, Pilar; Wilson, David; Jerina, Klemen; Krofel, Miha; Kostecke, Rich; Inger, Richard; Per, Esra; Ayhan, Yunus; Sancı, Mehmet; Yılmazer, Ünsal; Inagaki, Akino; Koike, Shinsuke; Samson, Arockianathan; Perrig, Paula L.; Spencer, Emma E.; Newsome, Thomas M.; Heurich, Marco; Anadón, José D.; Buechley, Evan R.; Gutiérrez-Cánovas, Cayetano; Elbroch, L. Mark; Sánchez-Zapata, José A. (Peer reviewed; Journal article, 2021)
      Species assemblages often have a non-random nested organization, which in vertebrate scavenger (carrion-consuming) assemblages is thought to be driven by facilitation in competitive environments. However, not all scavenger ...

    • A Grazer in a Browser's Habitat: Resource Selection of Foraging Cattle in Productive Boreal Forest 

      Spedener, Mélanie; Tofastrud, Morten; Austrheim, Gunnar; Zimmermann, Barbara (Peer reviewed; Journal article, 2024)
      In Norway, cattle (Bos taurus) are released to large areas of boreal forest for summer grazing. To determine to what degree this practice challenges timber production and wildlife management, we need a better understanding ...

    • Habitat segregation between brown bears and grey wolves in a human-dominated landscape 

      Milleret, Cyril Pierre; Ordiz Fernandez, Andres Avelino; Chapron, Guillaume; Andreassen, Harry Peter; Kindberg, Jonas; Månsson, Johan; Tallian, Aimee; Wabakken, Petter; Wikenros, Camilla; Zimmermann, Barbara; Swenson, Jon; Sand, Håkan (Peer reviewed; Journal article, 2018)

    • Habitat selection of free-ranging cattle in productive coniferous forests of south-eastern Norway 

      Tofastrud, Morten; Devineau, Olivier; Zimmermann, Barbara (Peer reviewed; Journal article, 2019)

    • Heart rate sensor validation and seasonal and diurnal variation of body temperature and heart rate in domestic sheep 

      Fuchs, Boris; Sørheim, Kristin; Chincarini, Matteo; Brunberg, Emma; Stubsjøen, Solveig Marie; Bratbergsengen, Kjell; Hvasshovd, Svein-Olaf; Zimmermann, Barbara; Lande, Unni Støbet; Grøva, Lise (Peer reviewed; Journal article, 2019)
      Advantages of low input livestock production on large pastures, including animal welfare, biodiversity and low production costs are challenged by losses due to undetected disease, accidents and predation. Precision livestock ...

    • High infection intensities, but negligible fitness costs, suggest tolerance of gastrointestinal nematodes in a tropical snake 

      Mayer, Martin; Brown, Gregory P.; Zimmermann, Barbara; Shine, Richard (Journal article; Peer reviewed, 2015)
      We investigated patterns of prevalence and intensity of gastrointestinal nematode infections in a tropical natricine snake, the keelback (Tropidonophis mairii). Ninety-eight per cent of keelbacks were infected with Tanqua ...

    • Hjortens trekkmønster skaper forvaltningsutfordringer i Hedmark 

      Zimmermann, Barbara; Wedul, Sari J.; Johnsen, Kaja; Strømseth, Thomas H.; Østerhus, Benedicte (Chapter; Peer reviewed, 2014)
      Jaktstatistikken fra Hedmark fylke tilsier at hjorten er tilbake for godt i Hedmark og befinner seg i en sterk vekstfase. Med det følger mange forvaltningsutfordringer. Vi har studert hjortens forflytningsmønster ...

    • Impact of a recolonizing, cross‑border carnivore population on ungulate harvest in Scandinavia 

      Wikenros, Camilla; Sand, Håkan; Månsson, Johan; Maartmann, Erling; Eriksen, Ane; Wabakken, Petter; Zimmermann, Barbara (Peer reviewed; Journal article, 2020)
      Predation from large carnivores and human harvest are the two main mortality factors afecting the dynamics of many ungulate populations. We examined long-term moose (Alces alces) harvest data from two countries that share ...