Browsing Brage INN by Author "Zimmermann, Barbara"

Now showing items 1-20 of 74

    • 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 ...

    • Atferdsstudier på ulv i Slettås- og Osdalsreviret: Foreløpige resultater fra feltperioden januar–februar 2017 

      Zimmermann, Barbara; Wabakken, Petter; Eriksen, Ane; Maartmann, Erling; Holen, Frode; Dahl, Espen R.; Nordli, Kristoffer; Teräväinen, Malin; Fuchs, Boris; Svarstad, Ingvild B.; Fredriksson, Øyvind; Sand, Håkan; Wikenros, Camilla (Oppdragsrapport;1/2017, Research report, 2017)
      Ulver i Slettåsreviret har i flere år blitt beskrevet som nærgående av lokalbefolkningen og media. Fem individer av flokken ble derfor merket med GPS-halsbånd i januar 2017, samtidig som ni ulver fra naboflokken i Osdalsreviret ...

    • 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 ...

    • Beiteatferd, habitatseleksjon og produktivitet hos storfe på utmarksbeite 

      Tofastrud, Morten; Zimmermann, Barbara; Devineau, Olivier; Hessle, Anna; Aletengqimuke, Sukebate; Dickel, Lisa; Hegnes, Hilde; Møllevold, Ole Henrik; Skoglund, Bjørn Holmen; Spedener, Mélanie (Skriftserien;35/2019, Research report, 2019)
      Politiske målsetninger om økt storfekjøttproduksjon i Innlandet gjør at storfebeiting i utmark er forventet å øke, og da særlig andelen av spesialiserte, internasjonale kjøttferaser. Storfe er avlet til å yte maksimalt på ...

    • 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)

    • Drone-borne monitoring of moose 

      Mayer, Martin; Vogler, Thomas; Ausilio, Giorgia; Kirchner, Theresa; Mathisen, Karen Marie; Evans, Alina L.; Eriksen, Ane; Heurich, Marco; Naumov, Vladimir; Wabakken, Petter; Zimmermann, Barbara (Oppdragsrapport;4/2024, Research report, 2024)
      Norsk: Droner er en lovende ny teknologi for overvåking av viltbestander. I dette prosjektet evaluerte vi bruken av droner som et verktøy for overvåking av elg (Alces alces) populasjoner og beiting i den skandinaviske ...

    • 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 ...

    • Effekter av ulv på elgbestanden: da ulven kom og forsvant fra Koppangkjølen 

      Storaas, Torstein; Pedersen, Simen; Andreassen, Harry Peter; Arnemo, Jon Martin; Dötterer, Michael; Eriksen, Ane; Frugaard, Anne; Gundersen, Hege; Haug, Thor A.; Milner, Jos; Maartmann, Erling; Nicolaysen, Knut B.; Nilsen, Erlend B.; Rønning, Håvard; Solberg, Erling J.; Steinset, Ole K.; Strømseth, Thomas; Wabakken, Petter; Zimmermann, Barbara; Aalbu, Frode (Oppdragsrapport;1/2008, Research report, 2008)
      Norsk: Fra 1997 til 2005 hevdet ulv revir på Koppangkjølen i Stor-Elvdal og Rendalen kommuner, Hedmark Fylke. Vi fulgte elgbestanden i området gjennom SETT ELG, takseringer fra helikopter og ved hjelp av radiomerkede elger. ...

    • Elg i ulverevir: predasjon og elgjakt. Utredning om ulv og elg del 2 

      Zimmermann, Barbara; Wikenros, Camilla; Sand, Håkan; Eriksen, Ane; Wabakken, Petter (Skriftserien;23/2019, Research report, 2019)
      I Skandinavia er ulvebestanden regulert av jakt. Dette medfører at ulvens påvirkning på byttedyrbestandene begrenses sammenlignet med uregulerte rovviltbestander og hovedsakelig konsentreres til områder med stasjonære, ...

    • Elg og selektiv hogst 

      Zimmermann, Barbara; Storaas, Torstein; Goedde, Tobias; Lieungh, Nils (Rapport, Research report, 2006)

    • Elgbeitetakst 2022 i Våler og Åsnes kommuner 

      Hellbaum, Paige; Ampe, Natacha; Carlomagno, Ester; Grimsgaard, Aslak; Luksengård, Sigurd; Miltz, Cecilia; Zimmermann, Barbara (Oppdragsrapport;4/2023, Research report, 2023)
      På oppdrag fra Våler og Åsnes kommuner gjennomførte Høgskolen i Innlandet en beitetakst for elg (Alces alces) i mai og juni 2022. Metoden bestod av en kombinasjon av den norske (Solbraa) og svenske (Äbin) beitetakstmetodikken. ...

    • 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 ...

    • Grazing behaviour and weight performance of free-ranging cattle in the boreal forest 

      Tofastrud, Morten (PhD thesis in applied ecology;18, Doctoral thesis, 2019)
      En økende interesse for norsk storfekjøttproduksjon basert på utenlandske kjøttferaser har ført til en økning i antall ammekyr på beite i utmarka. Mine hovedmål var å undersøke beiteadferd og vektutvikling hos disse dyrene ...