Now showing items 87-106 of 679

    • Challenges for transboundary management of a European 

      Reljic, Slaven; Jerina, Klemen; Nilsen, Erlend B.; Huber, Djuro; Kusak, Josip; Jonozovic, Marko; Linnell, John D.C. (Peer reviewed, 2018)
      Pan-European legislation stimulates international cooperation to overarching challenges of large carnivore management across jurisdictions. We present an analysis for current transboundary brown bear (Ursus arctos) ...
    • 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 ...
    • Changes in greening in the High Arctic - insights from a 30-year AVHRR max NDVI dataset for Svalbard 

      Vickers, Hannah; Høgda, Kjell Arild; Solbø, Stian; Karlsen, Stein Rune; Tømmervik, Hans; Aanes, Ronny; Hansen, Brage Bremset (Journal article; Peer reviewed, 2016)
      Satellite-aided studies of vegetation cover, biomass and productivity are becoming increasingly important formonitoring the effects of a changing climate on the biosphere. With their large spatial coverage and good temporal ...
    • Changes in growing season duration and productivity of northern vegetation inferred from long-term remote sensing data 

      Park, Taejin; Ganguly, Sangram; Tømmervik, Hans; Euskirchen, Eugénie S.; Høgda, Kjell Arild; Karlsen, Stein Rune; Brovkin, Victor; Nemani, Ramakrishna R.; Myneni, Ranga B. (Journal article; Peer reviewed, 2016)
      Monitoring and understanding climate-induced changes in the boreal and arctic vegetation is critical to aid in prognosticating their future.Weused a 33 year (1982–2014) long record of satellite observations to robustly ...
    • Changes in timing of seasonal peak photosynthetic activity in northern ecosystems 

      Park, Taejin; Chen, Chi; Macias-Fauria, Marc; Tømmervik, Hans; Choi, Sungho; Winkler, Alexander; Bhatt, Uma S.; Walker, Donald A.; Piao, Shilong; Brovkin, Victor; Nemani, Ramakrishna R.; Myneni, Ranga B. (Journal article; Peer reviewed, 2019)
      Seasonality in photosynthetic activity is a critical component of seasonal carbon, water and energy cycles in the Earth system. This characteristic is a consequence of plant’s adaptive evolutionary processes to a given set ...
    • Changes in trophic state and aquatic communities in high Arctic ponds in response to increasing goose populations 

      Jensen, Thomas Correll; Walseng, Bjørn; Hessen, Dag Olav; Dimante-Deimantovica, Inta; Novichkova, Anna; Chertoprud, Elena S.; Chertoprud, Mikhail V.; Sakharova, Ekaterina G.; Krylov, Aleksandr V.; Frisch, Dagmar; Christoffersen, Kirsten Seestern (Peer reviewed, 2019)
      1. The high Arctic, including the Svalbard archipelago in the North Atlantic, has been exposed to direct and indirect drivers of climatic change such as rising temperatures and associated changes in hydrology and nutrient ...
    • Changes in winter warming events in the Nordic Arctic Region 

      Vikhamar-Schuler, Dagrun; Isaksen, Ketil; Haugen, Jan Erik; Tømmervik, Hans; Luks, Bartlomiej; Schuler, Thomas Vikhamar; Bjerke, Jarle W. (Journal article; Peer reviewed, 2016)
      In recent years extreme winter warming events have been reported in arctic areas. These events are characterized as extraordinarily warm weather episodes, occasionally combined with intense rainfall, causing ecological ...
    • Changing Arctic snow cover: A review of recent developments and assessment of future needs for observations, modelling, and impacts 

      Bokhorst, Stef; Pedersen, Stine Højlund; Brucker, Ludovic; Anisimov, Oleg; Bjerke, Jarle W.; Brown, Ross D.; Ehrich, Dorothee (Journal article, 2016)
      Snow is a critically important and rapidly changing feature of the Arctic. However, snow-cover and snowpack conditions change through time pose challenges for measuring and prediction of snow. Plausible scenarios of ...
    • Changing contributions of stochastic and deterministic processes in community assembly over a successional gradient 

      Måren, Inger Elisabeth; Kapfer, Jutta; Aarrestad, Per Arild; Grytnes, John-Arvid; Vandvik, Vigdis (Journal article; Peer reviewed, 2017)
      Successional dynamics in plant community assembly may result from both deterministic and stochastic ecological processes. The relative importance of different ecological processes is expected to vary over the successional ...
    • Characterisation and mapping of landscape types, a case study from Norway 

      Erikstad, Lars; Uttakleiv, Lars Andre; Halvorsen, Rune (Journal article; Peer reviewed, 2016)
      The European Landscape Convention emphasises the human perception of landscapes in its definition of the landscape, and promotes citizen participation in landscape management processes. On the other hand, landscape ...
    • Characteristics of temporal changes in communities where dynamics differ between species 

      Solbu, Erik Blystad; Engen, Steinar; Diserud, Ola Håvard (Peer reviewed, 2016)
      Communities with different phenotypic variation among species can have identical species abundance distributions, although their temporal dynamics may be very different. By using stochastic species abundance models, both ...
    • Characteristics, drivers and feedbacks of global greening 

      Piao, Shilong; Wang, Xuhui; Park, Taejin; Chen, Chi; Lian, Xu; He, Yue; Bjerke, Jarle W.; Chen, Anping; Ciais, Philippe; Tømmervik, Hans; Nemani, Ramakrishna R.; Myneni, Ranga B. (Peer reviewed, 2019)
    • Chewing lice Trichodectes pinguis pinguis in Scandinavian brown bears (Ursus arctos) 

      Esteruelas, Nuria Fandos; Malmsten, Jonas; Bröjer, Caroline; Grandi, Giulio; Lindström, Anders; Brown, Paul; Swenson, Jon; Evans, Alina; Arnemo, Jon Martin (Journal article; Peer reviewed, 2016)
      In April 2014 and 2015, we noted localized alopecia (neck, forelimbs, and chest) and hyperpigmentation on two adult brown bears (Ursus arctos) captured in central-south Sweden for ecological studies under the Scandinavian ...
    • Children and nearby nature: A nationwide parental survey from Norway 

      Gundersen, Vegard; Skår, Margrete; O'Brien, Liz; Wold, Line Camilla; Follo, Gro Irene (Peer reviewed, 2016)
      tThe aim of this paper is to describe the availability of and use of nearby outdoor spaces along a naturecontinuum by Norwegian children. We carried out a nationwide survey of 3 160 parents with childrenaged 6–12 years, ...
    • China and India lead in greening of the world through land-use management 

      Chen, Chi; Park, Taejin; Wang, Xuhui; Piao, Shilong; Xu, Baodong; Chaturvedi, Rajiv K.; Fuchs, Richard; Brovkin, Victor; Ciais, Philippe; Fensholt, Rasmus; Tømmervik, Hans; Bala, Govindasamy; Zhu, Zaichun; Nemani, Ramakrishna R.; Myneni, Ranga B. (Journal article; Peer reviewed, 2019)
      Satellite data show increasing leaf area of vegetation due to direct factors (human land-use management) and indirect factors (such as climate change, CO2 fertilization, nitrogen deposition and recovery from natural ...
    • Circadian rhythmicity persists through the Polar night and midnight sun in Svalbard reindeer 

      Arnold, Walter; Ruf, Thomas; Loe, Leif Egil; Irvine, R. Justin; Ropstad, Erik; Veiberg, Vebjørn; Albon, Steve D. (Journal article; Peer reviewed, 2018)
      Studies of locomotor activity in Svalbard reindeer reported the temporary absence of diel rhythms under Arctic photic conditions. However, using Lomb-Scargle periodogram analyses with high statistical power we found diel ...
    • Circumpolar dynamics of a marine top-predator track ocean warming rates. 

      Descamps, Sebastian; Anker-Nilssen, Tycho; Barrett, Robert T; Irons, D; Merkel, Flemming; Robertson, Gregory J.; Yoccoz, Nigel Gilles; Mallory, Mark L; Montevecchi, William A.; Boertmann, D.; Artukhin, Yuri; Christensen-Dalsgaard, Signe; Erikstad, Kjell E; Gilchrist, H. Grant; Labansen, Aili; Lorentsen, Svein Håkon; Mosbech, Anders; Olsen, Bergur; Petersen, Aevar; Rail, Jean-Francois; Renner, Heather M.; Strøm, H.; Systad, Geir Helge; Wilhelm, Sabina I.; Zelenskaya, Larisa (Journal article; Peer reviewed, 2017)
      Global warming is a nonlinear process, and temperature may increase in a stepwise manner. Periods of abrupt warming can trigger persistent changes in the state of ecosystems, also called regime shifts. The responses of ...
    • Climate and density-dependence cause changes in adult sex ratio in a large Arctic herbivore 

      Peeters, Bart; Veiberg, Vebjørn; Pedersen, Åshild Ønvik; Stien, Audun; Irvine, Robert Justin; Aanes, Ronny; Sæther, Bernt-Erik; Strand, Olav; Hansen, Brage Bremset (Journal article; Peer reviewed, 2017)
      Peeters, B., V. Veiberg, A. Ø. Pedersen, A. Stien, R. J. Irvine, R. Aanes, B.-E. Sæther, O. Strand, and B. B. Hansen. 2017. Climate and density dependence cause changes in adult sex ratio in a large Arctic herbivore. ...
    • Climate and land‑cover change alter bumblebee species richness and community composition in subalpine areas 

      Fourcade, Yoan; Åström, Sandra Charlotte Helene; Öckinger, Erik (Journal article; Peer reviewed, 2019)
      Climate and land-use change are recognised as the two main drivers of the ongoing reorganisation of Earth’s biodiversity, but understanding precisely their role in shaping species’ distributions and communities remains ...
    • Climate change and the increasing impact of polar bears on bird populations 

      Prop, Jouke; Aars, Jon; Bårdsen, Bård-Jørgen; Hanssen, Sveinn Are; Bech, Claus; Bourgeon, Sophie; Fouw, Jimmy de; Gabrielsen, Geir W.; Lang, Johannes; Noreen, Elin; Oudman, Thomas; Sittler, Benoit; Tombre, Ingunn; Wolters, Eva; Moe, Børge; Stempniewicz, Lech (Peer reviewed, 2015)
      The Arctic is becoming warmer at a high rate, and contractions in the extent of sea ice are currently changing the habitats of marine top-predators dependent on ice. Polar bears (Ursus maritimus) depend on sea ice for ...