Blar i NTNU Open på forfatter "Gjershaug, Jan Ove"

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    • 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 ...

    • Assessment of species listing proposals for CITES CoP17. Opinion of the Panel on Alien Organisms and Trade in Endangered Species (CITES) of the Norwegian Scientific Committee for Food Safety 

      Rueness, Eli Knispel; Asmyhr, Maria Gulbrandsen; Endrestøl, Anders; Gjershaug, Jan Ove; Måren, Inger Elisabeth; de Boer, Hugo; Hindar, Kjetil; Kirkendall, Lawrence R.; Nagy, Nina Elisabeth; Nielsen, Anders; Sandlund, Odd Terje; Sjøtun, Kjersti; Stenøien, Hans K.; Velle, Gaute; Vandvik, Vigdis (VKM Report;, Research report, 2016)
      International wildlife trade is estimated to be worth billions of dollars annually and to include hundreds of millions of plant and animal specimens. The commerce is diverse, ranging from live animals and plants, to parts ...

    • Assessment of the risks associated with the import and release of hand-reared mallards for hunting purposes. Opinion of the Panel on Alien Organisms and Trade in Endangered Species (CITES) of the Norwegian Scientific Committee for Food Safety, VKM Report 2017:23 

      Rueness, Eli Knispel; Cadahia-Lorenzo, Luis; Hoel, Kristian; Søderquist, Pär; Velle, Gaute; Asmyhr, Maria Gulbrandsen; de Boer, Hugo; Gjershaug, Jan Ove; Hindar, Kjetil; Kirkendall, Lawrence R.; Nagy, Nina Elisabeth; Nielsen, Anders; Sandlund, Odd Terje; Sjøtun, Kjersti; Stenøien, Hans K.; Vandvik, Vigdis (VKM Report;, Research report, 2017)

    • Assessment of the risks to Norwegian biodiversity from the import and keeping of aquarium and garden pond plants. Opinion of the Panel on Alien Organisms and Trade in Endangered Species (CITES) of the Norwegian Scientific Committee for Food Safety 

      de Boer, Hugo; Asmyhr, Maria Gulbrandsen; Grundt, Hanne Hegre; Sjøtun, Kjersti; Stenøien, Hans K.; Gjershaug, Jan Ove; Hindar, Kjetil; Kirkendall, Lawrence R.; Nagy, Nina Elisabeth; Nielsen, Anders; Rueness, Eli Knispel; Sandlund, Odd Terje; Velle, Gaute (VKM Report;, Research report, 2016)
      The Norwegian Environment Agency (NEA) asked the Norwegian Scientific Committee for Food Safety (VKM) to assess the risks of negative impacts on biodiversity in Norway from the import and keeping of various species of ...

    • Assessment of the risks to Norwegian biodiversity from the import and keeping of terrestrial arachnids and insects. Opinion of the Panel on Alien Organisms and Trade in Endangered species of the Norwegian Scientific Committee for Food Safety 

      Nielsen, Anders; Finne, Merethe Aasmo; Asmyhr, Maria Gulbrandsen; Gjershaug, Jan Ove; Kirkendall, Lawrence R.; Vandvik, Vigdis; Velle, Gaute; de Boer, Hugo; Hindar, Kjetil; Nagy, Nina Elisabeth; Rueness, Eli Knispel; Sandlund, Odd Terje; Sjøtun, Kjersti; Stenøien, Hans K. (VKM Report;, Research report, 2016)
      The Norwegian Scientific Committee for Food Safety (VKM) has been asked by the Norwegian Environment Agency to undertake an assessment of the risks of negative impacts on biodiversity in Norway stemming from the import of ...

    • Fuglefaunaen i Todalsvassdragets nedbørfelt, Møre og Romsdal og Sør-Trøndelag-fylker 

      Bevanger, Kjetil; Gjershaug, Jan Ove; Ålbu, Øystein (NTNU Vitenskapsmuseet Rapport Zoologisk Serie, 0802-0833; 1981:16, Research report, 1981)

    • Hvorfor dør humler under lindetrær? 

      Vinnes, Malene Kyrkjebø (Master thesis, 2019)
      At humler dør under blomstrende lindetrær er et svært kjent fenomen. Det er blitt foreslått mange forklaringer på hvorfor dette skjer, samtidig peker resultater i flere retninger. Kunnskap om årsaker til dette fenomenet ...

    • 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 ...

    • Phylogeny and new taxonomy of the BootedEagles (Accipitriformes: Aquilinae) 

      Lerner, Heather R.L.; Christidis, Les; Gamauf, Anita; Griffiths, Carole; Haring, Elisabeth; Huddleston, Christopher J; Kabra, Sonia; Kocum, Annett; Krosby, Meade; Kvaløy, Kirsti; Mindell, David; Rasmussen, Pamela; Røv, Nils; Wadleigh, Rachel; Wink, Michael; Gjershaug, Jan Ove (Journal article; Peer reviewed, 2017)
      We present a phylogeny of all booted eagles (38 extant and one extinct species) based on analysis of published sequences from seven loci. We find molecular support for five major clades within the booted eagles: Nisaetus ...

    • "Pre- and post-construction studies of conflicts between birds and wind turbines in coastal Norway". Progress Report 2008 

      Bevanger, Kjetil Modolv; Clausen, Stig Morten; Dahl, Espen Lie; Flagstad, Øystein; Follestad, Arne; Gjershaug, Jan Ove; Halley, Duncan John; Hanssen, Frank Ole; Hoel, Pernille Lund; Jacobsen, Karl-Otto; Johnsen, Lars; May, Roelof Frans; Nygård, Torgeir; Pedersen, Hans-Christian; Reitan, Ole; Steinheim, Yngve; Vang, Roald (NINA rapport;409, Research report, 2008)
      Nøkkelord : windpower, radar, bird, mortality, whitetailed sea eagle, GIS, ptarmigan, eagle owl, vindkraft, dødlighet, havørn, lirype, hubro

    • “Pre- and post-construction studies of conflicts between birds and wind turbines in coastal Norway”. Statusrapport 1. januar 2008 

      Bevanger, Kjetil Modolv; Follestad, Arne; Gjershaug, Jan Ove; Halley, Duncan John; Hanssen, Frank Ole; Johnsen, Lars; May, Roelof Frans; Nygård, Torgeir; Pedersen, Hans Christian; Reitan, Ole; Steinheim, Yngve (NINA Rapport;329, Research report, 2008)
      NINA har siden 1999 hatt ulike forsknings- og utredningsaktiviteter knyttet til vindkraft og fugl (med spesiell fokus på havørn). Finansieringen har hovedsakelig kommet fra NVE og Statkraft, men også EBL, DN/MD, Norsk Hydro ...

    • Taxonomy and conservation status of hawk-eagles (Genus Nisaetus) in south-east Asia 

      Gjershaug, Jan Ove (Doktoravhandlinger ved NTNU, 1503-8181; 2006:91, Doctoral thesis, 2006)
      Morphological, vocal and molecular data have been used to reevaluate the taxonomy of some Asian Nisaetus taxa. This name is used instead of Spizaetus because the latter genus is polyphyletic with clades in Asia, South ...

    • 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 ...