Blar i Scientific publications på forfatter "Gjershaug, Jan Ove"

Viser treff 1-9 av 9

    • Alien plants, animals, fungi and algae in Norway: an inventory of neobiota 

      Sandvik, Hanno; Dolmen, Dag; Elven, Reidar; Falkenhaug, Tone; Forsgren, Elisabet; Hansen, Haakon; Hassel, Kristian; Husa, Vivian; Kjærstad, Gaute; Ødegaard, Frode; Pedersen, Hans Christian; Solheim, Halvor; Stokke, Bård Gunnar; Åsen, Per Arvid; Åström, Sandra Charlotte Helene; Brandrud, Tor Erik; Elven, Hallvard; Endrestøl, Anders; Finstad, Anders Gravbrøt; Fredriksen, Stein; Gammelmo, Øivind; Gjershaug, Jan Ove; Gulliksen, Bjørn; Hamnes, Inger Sofie; Hatteland, Bjørn Arild; Hegre, Hanne; Hesthagen, Trygve H.; Jelmert, Anders; Jensen, Thomas Correll; Johnsen, Stein Ivar; Karlsbakk, Egil; Magnusson, Christer; Nedreaas, Kjell Harald; Nordén, Björn; Oug, Eivind; Pedersen, Oddvar; Pedersen, Per Anker; Sjøtun, Kjersti; Skei, Jon Kristian; Solstad, Heidi; Sundheim, Leif; Swenson, Jon; Syvertsen, Per Ole; Talgø, Venche; Vandvik, Vigdis; Westergaard, Kristine Bakke; Wienerroither, Rupert; Ytrehus, Bjørnar; Hilmo, Olga; Henriksen, Snorre; Gederaas, Lisbeth (Journal article; Peer reviewed, 2019)
      We present the results of an inventory and status assessment of alien species in Norway. The inventory covered all known multicellular neobiota, 2496 in total, 1039 of which were classified as naturalised. The latter ...

    • Alien species in Norway: results from quantitative ecological impact assessments 

      Sandvik, Hanno; Hilmo, Olga; Henriksen, Snorre; Elven, Reidar; Åsen, Per Arvid; Hegre, Hanne; Pedersen, Oddvar; Pedersen, Per Anker; Solstad, Heidi; Vandvik, Vigdis; Westergaard, Kristine Bakke; Ødegaard, Frode; Åström, Sandra Charlotte Helene; Elven, Hallvard; Endrestøl, Anders; Gammelmo, Øivind; Hatteland, Bjørn Arild; Solheim, Halvor; Nordén, Björn; Sundheim, Leif; Talgø, Venche; Falkenhaug, Tone; Gulliksen, Bjørn; Jelmert, Anders; Oug, Eivind; Sundet, Jan Henry; Forsgren, Elisabet; Finstad, Anders Gravbrøt; Hesthagen, Trygve H.; Nedreaas, Kjell Harald; Wienerroither, Rupert; Husa, Vivian; Fredriksen, Stein; Sjøtun, Kjersti; Steen, Henning; Hansen, Haakon; Hamnes, Inger Sofie; Karlsbakk, Egil; Magnusson, Christer; Ytrehus, Bjørnar; Pedersen, Hans Christian; Swenson, Jon; Syvertsen, Per Ole; Stokke, Bård Gunnar; Gjershaug, Jan Ove; Dolmen, Dag; Kjærstad, Gaute; Johnsen, Stein Ivar; Jensen, Thomas Correll; Hassel, Kristian; Gederaas, Lisbeth (Journal article, 2020)
      1. Due to globalisation, trade and transport, the spread of alien species is increasing dramatically. Some alien species become ecologically harmful by threatening native biota. This can lead to irreversible changes in ...

    • Following the cold: geographical differentiation between interglacial refugia and speciation in the arcto-alpine species complex Bombus monticola (Hymenoptera: Apidae) 

      Martinet, Baptiste; Lecocq, Thomas; Brasero, Nicolas; Biella, Paolo; Urbanová, Klára; Valterova, Irena; Cornalba, Maurizio; Gjershaug, Jan Ove; Michez, Denis; Rasmont, Pierre (Peer reviewed; Journal article, 2018)
      Cold-adapted species are expected to have reached their largest distribution range during a part of the Ice Ages whereas postglacial warming has led to their range contracting toward high-latitude and high-altitude areas. ...

    • Home-range, movements and use of powerline poles of Eagle-Owls (Bubo bubo) at an island population in northern Norway 

      Nygård, Torgeir; Jacobsen, Karl-Otto; Gjershaug, Jan Ove (Peer reviewed; Journal article, 2023)
      A dense island population of Eagle-Owls (Bubo bubo) close to the Arctic circle had suffered considerable mortality due to powerlines (electrocution and collision) throughout many decades. A study using GPS transmitter ...

    • Integrative taxonomy of the Changeable Hawk-Eagle Nisaetus cirrhatus complex (Accipitriformes: Accipitridae) in India 

      Gjershaug, Jan Ove; Diserud, Ola Håvard; Kleven, Oddmund; Rasmussen, P.C.; Espmark, Yngve (Peer reviewed; Journal article, 2020)
      The Changeable Hawk-Eagle Nisaetus cirrhatus complex is represented by two taxa in mainland India: N. c. cirrhatus in the northern plains and peninsula and N. c. limnaeetus in the Himalayan foothills. Traditionally these ...

    • Local resources, linear elements and mass-flowering crops determine bumblebee occurrences in moderately intensified farmlands 

      Kallioniemi, Eveliina; Åström, Jens; Rusch, Graciela; Dahle, Sondre; Åström, Sandra Charlotte Helene; Gjershaug, Jan Ove (Journal article; Peer reviewed, 2017)
      There is consensus that land-use change is a main driver behind the recent declines of many pollinator populations in Europe. However, it is still not adequately understood how the local resource quality and landscape ...

    • Monitoring methods for the Golden Eagle Aquila chrysaetos in Norway 

      Gjershaug, Jan Ove; Brøseth, Henrik; Kleven, Oddmund; Kålås, John Atle; Mattisson, Jenny; Tovmo, Mari (Journal article; Peer reviewed, 2018)
      Capsule: A description of the methods used for monitoring the Golden Eagle Aquila chrysaetos in Norway Aims: To provide a comprehensive description of monitoring methods. Methods: The intensive monitoring of the Golden ...

    • Predefinitive Plumage in the Golden Eagle (Aquila chrysaetos): A Signal of Aggression or Submission? 

      Gjershaug, Jan Ove; Halley, Duncan John; Stokke, Bård Gunnar (Peer reviewed; Journal article, 2019)

    • Why do we find dead bumblebees under linden trees? 

      Vinnes, Malene Kyrkjebø; Haugen, Inger Marie Aalberg; Diserud, Ola Håvard; Ødegaard, Frode; Gjershaug, Jan Ove (Peer reviewed; Journal article, 2022)
      1. Linden trees (Tilia spp.) have for a long time been associated with bumblebee (Bombus spp.) mortality in Europe and North America. Several explanations have been suggested for this phenomenon. This study aimed to explore ...