Browsing Institutt for naturhistorie by Title

Now showing items 7-26 of 1214

    • A preboreal elk (Alces alces L., 1758) antler from south-eastern Norway 

      Grøndahl, Finn Audun; Hufthammer, Anne Karin; Dahl, Svein Olaf; Rosvold, Jørgen (Journal article; Peer reviewed, 2010)
      In 1895 a shed elk antler was found in a mire on a farm near Fluberg, in Søndre Land municipality in south-eastern Norway. The antler was first radiocarbon dated in 2008 and yielded the age 9,100 ± 50 BP (8,340 – 8,250 ...

    • A quantitative investigation of the level-bottom macrofauna of Trondheimsfjorden, Norway 

      Holthe, Torleif (Gunneria, 0332-8554; 28, Research report, 1977)

    • A regional study of the genus Phyllopsora (Ramalinaceae) in Asia and Melanesia 

      Kistenich, Sonja Daniela; Bendiksby, Mika; Vairappan, Charles S.; Weerakoon, Gothamie; Wijesundara, Siril; Wolseley, Patricia; Timdal, Einar (Journal article; Peer reviewed, 2019)
      Phyllopsora is a crustose to squamulose lichen genus inhabiting the bark of trees in moist tropical forests and rainforests. Species identification is generally challenging and is mainly based on ascospore morphology, ...

    • A review of Norwegian Gymnometriocnemus (Diptera, Chironomidae) including the description of two new species and a new name for Gymnometriocnemus volitans (Goetghebuer) sensu Brundin 

      Stur, Elisabeth; Ekrem, Torbjørn (Journal article; Peer reviewed, 2015)
      Abstract Examination of the syntypes of Metriocnemus volitans Goetghebuer, 1940 revealed that these specimens belong to the genus Chaetocladius and are not con-specific with Gymnometriocnemus volitans (Goetghebuer, 1940) ...

    • A revision of Nereidinae (Polychaeta, Nereididae) 

      Bakken, Torkild (Doktoravhandlinger ved NTNU, 1503-8181; 2004:3, Doctoral thesis, 2004)
      Groups of taxa of the polychaete family Nereididae were studied with the aim of presenting a revision of the subfamily Nereidinae. Detailed description of characters starting with a selected group, Neanthes, was extended ...

    • A taxonomic revision of the Racomitrium canescens group (Bryophyta, Grimmiales) 

      Frisvoll, Arne A. (Gunneria, 0332-8554; 41, Research report, 1983)

    • A taxonomic revision of the Racomitrium heterostichum group (Bryophyta, Grimmiales) in N. and C. America, N. Africa, Europe and Asia 

      Frisvoll, Arne A. (Gunneria, 0332-8554; 59, Research report, 1988)

    • A. Kartlegging av truete vegetasjonstyper. Erfaringer fra Inderøy og Levanger 

      Aarrestad, Per Arild; Øien, Dag-Inge; Lyngstad, Anders; Moen, Asbjørn; Often, Anders (NTNU Vitenskapsmuseet Rapport Botanisk Serie, 0802-2992; 2003:1, Research report, 2003)
      Endangered vegetation types have been mapped in the municipalities of Inderøy and Levanger in order to evaluate how well the vegetation types are covered by the municipal mapping of valuable nature types. In Inderøy the ...

    • Acoustic accelerometer transmitters and their growing relevance to aquatic science 

      Lennox, Robert; Eldøy, Sindre Håvarstein; Dahlmo, Lotte Svengård; Matley, Jordan K.; Vollset, Knut (Peer reviewed; Journal article, 2023)
      There has recently been great interest in the use of accelerometers onboard electronic transmitters to characterise various aspects of the ecology of wild animals. We review use cases and outline how these tools can provide ...

    • Actuarial senescence in a long-lived orchid challenges our current understanding of ageing 

      Dahlgren, Johan P.; Colchero, Fernando; Jones, Owen R.; Øien, Dag Inge; Moen, Asbjørn; Sletvold, Nina (Journal article; Peer reviewed, 2016)
      The dominant evolutionary theory of actuarial senescence—an increase in death rate with advancing age—is based on the concept of a germ cell line that is separated from the somatic cells early in life. However, such a ...

    • Actuarial senescence progresses similarly across sites and species in four boreal orchids 

      Tholstrup, Ditte Wiig; Sletvold, Nina; Øien, Dag-Inge; Moen, Asbjørn; Colchero, Fernando; Dahlgren, Johan Petter (Peer reviewed; Journal article, 2024)
      1. Whole-plant senescence, defined as a decrease in individual fitness as an organism grows older, has often been assumed to not occur in plants; however, it has now been detected in a range of plant taxa. Still, reported ...

    • Adaptation to the High-Arctic island environment despite long-term reduced genetic variation in Svalbard reindeer 

      Dussex, Nicolas; Tørresen, Ole Kristian; van der Valk, Tom; Le Moullec, Mathilde; Veiberg, Vebjørn; Tooming-Klunderud, Ave; Skage, Morten; Garmann-Aarhus, Benedicte; Wood, Jonathan; Rasmussen, Jacob Agerbo; Pedersen, Åshild Ønvik; Martin, Sarah Louise; Røed, Knut; Jakobsen, Kjetill Sigurd; Dalén, Love; Hansen, Brage Bremset; Martin, Michael David (Peer reviewed; Journal article, 2023)
      Typically much smaller in number than their mainland counterparts, island populations are ideal systems to investigate genetic threats to small populations. The Svalbard reindeer (Rangifer tarandus platyrhynchus) is an ...

    • Adaptation to the High-Arctic island environment despite long-term reduced genetic variation in Svalbard reindeer 

      Dussex, Nicolas; Tørresen, Ole Kristian; van der Valk, Tom; Le Moullec, Mathilde; Veiberg, Vebjørn; Tooming-Klunderud, Ave; Skage, Morten; Garmann-Aarhus, Benedicte; Wood, Jonathan; Rasmussen, Jacob Agerbo; Pedersen, Åshild Ønvik; Martin, Sarah Louise; Røed, Knut; Jakobsen, Kjetill Sigurd; Dalén, Love; Hansen, Brage Bremset; Martin, Michael David (Peer reviewed; Journal article, 2023)
      Typically much smaller in number than their mainland counterparts, island populations are ideal systems to investigate genetic threats to small populations. The Svalbard reindeer (Rangifer tarandus platyrhynchus) is an ...

    • Advancing the use of molecular methods for routine freshwater macroinvertebrate biomonitoring – the need for calibration experiments 

      Blackman, Rosetta C.; Mächler, Elvira; Altermatt, Florian; Arnold, Amanda; Beja, Pedro; Boets, Pieter; Egeter, Bastian; Elbrecht, Vasco; Filipe, Ana Filipa; Jones, J. Iwan; Macher, Jan N.; Majaneva, Markus; Martins, Filipa M. S.; Múrria, Cesc; Meissner, Kristian; Pawlowski, Jan; Shmidt Yáñez, Paul L.; Zizka, Vera M. A.; Leese, Florian; Price, Ben; Deiner, Kristy (Journal article; Peer reviewed, 2019)
      Over the last decade, steady advancements have been made in the use of DNA-based methods for detection of species in a wide range of ecosystems. This progress has culminated in molecular monitoring methods being employed ...

    • Airborne laser scanning reveals increased growth and complexity of boreal forest canopies across a network of ungulate exclosures in Norway 

      Kolstad, Anders Lorentzen; Snøan, Ingrid Bekken; Austrheim, Gunnar; Bollandsås, Ole Martin; Solberg, Erling Johan; Speed, James David Mervyn (Peer reviewed; Journal article, 2021)
      Large herbivores are often classed as ecosystem engineers, and when they become scarce or overabundant, this can alter ecosystem states and influence climate forcing potentials. This realization has spurred a call to ...

    • Airborne laser scanning reveals uniform responses of forest structure to moose (Alces alces) across the boreal forest biome 

      Petersen, Tanja Kofod; Kolstad, Anders Lorentzen; Kouki, Jari; Leroux, Shawn J.; Potvin, Lynette R.; Tremblay, Jean-Pierre; Wallgren, Märtha; Widemo, Fredrik; Cromsigt, Joris P. G. M.; Courtois, Coline; Austrheim, Gunnar; Gosse, John; den Herder, Michael; Hermanutz, Luise; Speed, James David Mervyn (Peer reviewed; Journal article, 2023)
      1. The moose Alces alces is the largest herbivore in the boreal forest biome, where it can have dramatic impacts on ecosystem structure and dynamics. Despite the importance of the boreal forest biome in global carbon ...

    • Akeleie og abrodd. Hagens tradisjonsplanter. 

      Fremstad, Eli; Solem, Thyra (Bli med ut!; 3, Research report, 2005)

    • 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 ...

    • Aluminiumbehandling mot Gyrodactylus salaris i Ogna og Figga i 2006-effekter på bunndyr 

      Kjærstad, Gaute; Arnekleiv, Jo Vegar (NTNU Vitenskapsmuseet Zoologisk Notat, 1504-503X; 2007:2, Research report, 2007)