• A method that accounts for differential detectability in mixed samples of long-term infections with applications to the case of Chronic Wasting Disease in cervids 

      Viljugrein, Hildegunn; Hopp, Petter; Benestad, Sylvie Lafond; Nilsen, Erlend Birkeland; Våge, Jørn; Tavornpanich, Saraya; Rolandsen, Christer Moe; Strand, Olav; Mysterud, Atle (Journal article; Peer reviewed, 2018)
      1. Surveillance of wildlife diseases is logistically difficult, and imperfect detection is a recurrent challenge for disease estimation. Using citizen science can increase sample sizes, but it is associated with a cost in ...
    • Antall familiegrupper, bestandsestimat og bestandsutvikling for gaupe i Norge i 2015 

      Brøseth, Henrik; Tovmo, Mari; Nilsen, Erlend Birkeland (NINA rapport;1179, Research report, 2015)
      Det nasjonale overvåkingsprogrammet for store rovdyr overvåker i dag bestandsstørrelse og bestandsutvikling hos gaupe i Norge hovedsakelig gjennom registrering av familiegrupper (hunndyr i følge med årsunger). Årlig ...
    • Bjørn i Nord-Trøndelag 

      Nygård, Torgeir; Brainerd, Scott Michael; Brøseth, Henrik; Berntsen, Finn Erik Harald; Bjørnes, Even; Kvam, Tor; Nilsen, Erlend Birkeland; Pedersen, Paul Harald; Stokke, Sigbjørn; Sørensen, Ole Jakob; Swenson, Jon (NINA rapport;472, Research report, 2009)
      Atten brunbjørner (åtte binner og ti hannbjørner) ble fanget i prosjektperioden 1993-2002. Alle binnene og åtte hanner ble radiomerket med VHF-halsbåndsendere For sju binner og fem hannbjørner ble det innsamlet peiledata ...
    • Elgen i Norge sett med jegerøyne. En analyse av jaktmaterialet fra overvå-kingsprogrammet for elg og det samlede sett elg-materialet for perioden 1966-2004 

      Solberg, Erling Johan; Rolandsen, Christer Moe; Heim, Morten; Grøtan, Vidar; Garel, Mathieu; Sæther, Bernt-Erik; Nilsen, Erlend Birkeland; Austrheim, Gunnar; Herfindal, Ivar (NINA Rapport;125, Research report, 2006)
      Solberg, E. J., Rolandsen, C. M., Heim, M., Grøtan, V., Garel, M., Sæther, B.-E., Nilsen, E. B., Austrheim, G., Herfindal, I. 2006. Elgen i Norge sett med jegerøyne - En analyse av jaktmaterialet fra overvåkingsprogrammet ...
    • Estimering av antall hekkende par kongeørn basert på kjent forekomst i Norge for perioden 2010-2014 

      Dahl, Espen Lie; Nilsen, Erlend Birkeland; Brøseth, Henrik; Tovmo, Mari (NINA rapport;1158, Research report, 2015)
      Kongeørn i Norge overvåkes i dag gjennom to ulike overvåkingsmetoder: intensivt- og eksten-sivt overvåkede områder. Data fra begge overvåkingsmetoder registreres i Rovbase, miljøfor-valtningens database for overvåking av ...
    • GMSE: an R package for generalised management strategy evaluation 

      Duthie, A. Bradley; Cusack, Jeremy J.; Jones, Isabel L.; Minderman, Jeroen; Nilsen, Erlend Birkeland; Pozo, Rocio A.; Rakotonarivo, O. Sarobidy; Van Moorter, Bram; Bunnefeld, Nils (Journal article; Peer reviewed, 2018)
      1. Management strategy evaluation MSE is a powerful tool for simulating all key aspects of natural resource management under conditions of uncertainty. 2. We present the R package GMSE, which applies genetic algorithms ...
    • Harvest regulations and implementation uncertainty in small game harvest management 

      Moa, Pål Fossland; Eriksen, Lasse Frost; Nilsen, Erlend Birkeland (Journal article; Peer reviewed, 2017)
      A main challenge in harvest management is to set policies that maximize the probability that management goals are met. While the management cycle includes multiple sources of uncertainty, only some of these has received ...
    • Hjortevilt 2012–2014 : Framdriftsrapport fra Overvåkingsprogrammet for hjortevilt 

      Solberg, Erling Johan; Strand, Olav; Veiberg, Vebjørn; Andersen, Roy; Heim, Morten; Rolandsen, Christer Moe; Solem, May I.; Holmstrøm, Frode; Jordhøy, Per; Nilsen, Erlend Birkeland; Granhus, Aksel; Eriksen, Rune (NINA Rapport;1177, Research report, 2015)
      Dette er en framdriftsrapport fra Overvåkingsprogrammet for hjortevilt etter de tre første årene i kontraktsperioden 2012–2017. I rapporten gir vi en oversikt og kvalitetsvurdering av data innsamlet i årene 2012–2014 og ...
    • Integrating data from multiple sources for insights into demographic processes: Simulation studies and proof of concept for hierarchical change-in-ratio models 

      Nilsen, Erlend Birkeland; Strand, Olav (Journal article; Peer reviewed, 2018)
      Nilsen EB, Strand O (2018) Integrating data from multiple sources for insights into demographic processes: Simulation studies and proof of concept for hierarchical change-in-ratio models. PLoS ONE 13(3): e0194566. ...
    • Life-history attributes and resource dynamics determine intraspecific home-range sizes in Carnivora 

      Duncan, Clare; Nilsen, Erlend Birkeland; Linnell, John Durrus; Pettorelli, Nathalie (Peer reviewed, 2015)
      Home ranges capture a fundamental aspect of animal ecology, resulting from interactions between metabolic demands and resource availability. Yet, the understanding of their emergence is currently limited by lack of ...
    • Lynx predation on semi-domestic reindeer: do age and sex matter? 

      Mattisson, Jenny; Arntsen, Gustav Busch; Nilsen, Erlend Birkeland; Loe, Leif Egil; Linnell, John Durrus; Odden, John; Persson, J.; Andrén, H. (Journal article; Peer reviewed, 2014)
      The Eurasian lynx is an efficient stalking predator mainly selecting small-sized ungulates. In northern Scandinavia, semi-domestic reindeer are the only ungulate species available for Eurasian lynx year round and consequently ...
    • Prognosemodell for bestanden av gaupe i Norge 

      Nilsen, Erlend Birkeland; Brøseth, Henrik; Odden, John; Andrén, Henrik; Linnell, John Durrus (NINA Rapport;774, Research report, 2011)
      Stortinget har vedtatt bestandsmål for antall familiegrupper av gaupe i Norge, både på nasjo-nalt og regionalt nivå. Målsetningen er at bestanden(e) til enhver tid skal være på bestandsmå-let i alle rovviltregioner med ...
    • Quantifying risk of overharvest when implementation is uncertain 

      Eriksen, Lasse Frost; Moa, Pål Fossland; Nilsen, Erlend Birkeland (Journal article; Peer reviewed, 2017)
      1. Sustainable harvest management implies an ability to control harvest rates. This is challenging in systems that have limited control of resources and resource users, which is often the case in small game harvest management. ...
    • Quantifying suitable late summer brood habitats for willow ptarmigan in Norway 

      Kvasnes, Mikkel Andreas Jørnsøn; Pedersen, Hans Christian; Nilsen, Erlend Birkeland (Journal article; Peer reviewed, 2018)
      Background: Habitat models provide information about which habitat management should target to avoid species extinctions or range contractions. The willow ptarmigan inhabits alpine- and arctic tundra habitats in the northern ...
    • Sett elg og sett hjort-overvåkingen: Styrker og forbedringspotensial 

      Solberg, Erling Johan; Veiberg, Vebjørn; Rolandsen, Christer Moe; Ueno, Mayumi; Nilsen, Erlend Birkeland; Gangsei, Lars Erik; Stenbrenden, Magnus; Libjå, Lars Egil (NINA rapport;1043, Research report, 2014)
      Målrettet hjorteviltforvaltning krever innsamling av fortløpende informasjon om bestandsutviklingen i kombinasjon med effektiv høsting. I denne prosessen har fritidsjegere en viktig rolle ved at de hvert år rapporterer ...
    • Sharing data improves monitoring of trans-boundary populations: the case of wolverines in central Scandinavia 

      Gervasi, Vincenzo; Brøseth, Henrik; Gimenez, Olivier; Nilsen, Erlend Birkeland; Odden, John; Flagstad, Øystein; Linnell, John Durrus (Journal article; Peer reviewed, 2016)
      of wide-ranging species are likely to extend across multiple jurisdictions, including national and international borders. This requires that local institutions implement data sharing and a standardization of monitoring ...
    • Skandlynx : framdriftsrapport fra det skandinaviske forskningsprosjektet på gaupe 2008-2009 

      Odden, John; Mattisson, Jenny; Andrén, Henrik; Linnell, John D.C.; Persson, Jens; Flagstad, Øystein; Nilsen, Erlend Birkeland; Arnemo, Jon Martin; Sköld, Kent; Segerström, Peter; Samelius, Gustaf; Rauset, Geir Rune; Danell, Anna; Liberg, Olof (NINA Rapport;513, Research report, 2009)
      Odden, J., Mattisson, J., Andren, H., Linnell, J.D.C., Persson, J., Flagstad, Ø., Nilsen, E.B., Arnemo, J.M., Sköld, K., Segerström, P., Samelius, G., Rauset, G.R., Danell, A. & Liberg, O. 2009. Skandlynx : framdriftsrapport ...
    • The risks of learning: confounding detection anddemographic trend when using count-based indices forpopulation monitoring 

      Gervasi, Vincenzo; Brøseth, Henrik; Gimenez, Olivier; Nilsen, Erlend Birkeland; Linnell, John Durrus (Peer reviewed, 2014)
      Theory recognizes that a treatment of the detection process is required to avoid producing biased estimates of population rate of change. Still, one of three monitoring programmes on animal or plant populations is focused ...
    • The spatio-temporal distribution of wild and domestic ungulates modulates lynx kill rates in a multi-use landscape 

      Gervasi, Vincenzo; Nilsen, Erlend Birkeland; Odden, John; Bouyer, Yaëlle; Linnell, John Durrus (Journal article; Peer reviewed, 2014)
      Depredation on livestock and competition with hunters for game species are prominent among the conflicts that the return of large carnivores generates in multi-use landscapes. The relative magnitude of the conflict strongly ...