Browsing NTNU Open by Author "Hassel, Kristian"
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Highly overlapping winter diet in two sympatric lemming species revealed by DNA metabarcoding
Soininen, Eeva M; Gauthier, Gilles; Bilodeau, Frederic; Berteaux, Dominique; Gielly, Ludovic; Taberlet, Pierre; Gussarova, Galina; Bellemain, Eva; Hassel, Kristian; Stenøien, Hans K.; Epp, Laura; Schrøder-Nielsen, Audun; Brochmann, Christian; Yoccoz, Nigel Gilles (Journal article; Peer reviewed, 2015)Sympatric species are expected to minimize competition by partitioning resources, especially when these are limited. Herbivores inhabiting the High Arctic in winter are a prime example of a situation where food availability ... -
How does microclimate affect the growth of the rare liverwort Scapania nimbosa?
Wangen, Kristin; Speed, James David Mervyn; Hassel, Kristian (Journal article; Peer reviewed, 2017)Vegetative growth of bryophytes is dependent on water and will stop as soon as the plants dry out. The growth rate depends on the quality of the micro-habitat. Clonal growth and dispersal of plant fragments are important ... -
Hva er effekten av småkraftverkutbygging på moser som vokser på liggende dødved? Et populasjonsstudie av fakkeltvebladmose Scapania apiculata
Hassel, Kristian (Journal article; Peer reviewed, 2018)The liverwort Scapania apiculata (VU) is a redlisted species in Norway, and one of the species that is evaluated as threatened due to transformation of its habitat by constructions of small-scale hydroelectric power plants. ... -
Hyper-oceanic liverwort species of conservation concern: Evidence for dispersal limitation and identification of suitable uncolonised regions
Wangen, Kristin; Speed, James David Mervyn; Hassel, Kristian (Journal article; Peer reviewed, 2016)In order to successfully manage and conserve species and plant communities, it is important to have a good understanding of their ecology and distributions. The three liverwort species Anastrophyllum donnianum, Scapania ... -
The identification and distribution of Sphagnum balticum (Russow) C.E.O.Jensen in Britain
Callaghan, Des A.; Kyrkjeeide, Magni Olsen; Hassel, Kristian (Peer reviewed; Journal article, 2023)Introduction. The aims of this study were to help clarify the identification of Sphagnum balticum in Britain, to review its distribution, and to investigate the possible presence of hybrids between it and either S. cuspidatum ... -
Impact of climate change on alpine vegetation of mountain summits in Norway
Vanneste, Thomas; Michelsen, Ottar; Graae, Bente Jessen; Kyrkjeeide, Magni Olsen; Holien, Håkon; Hassel, Kristian; Lindmo, Sigrid; Kapás, Rozália Erzsebet; De Frenne, Pieter (Journal article; Peer reviewed, 2017)Climate change is affecting the composition and functioning of ecosystems across the globe. Mountain ecosystems are particularly sensitive to climate warming since their biota is generally limited by low temperatures. ... -
Is interspecific gene flow and speciation in peatmosses (Sphagnum) constrained by phylogenetic relationship and life-history traits?
Meleshko, Olena; Stenøien, Hans K.; Speed, James David Mervyn; Flatberg, Kjell Ivar; Kyrkjeeide, Magni Olsen; Hassel, Kristian (Journal article; Peer reviewed, 2018)Peatmosses are interesting for studies of speciation processes not only because of their frequent hybridization and recent diversification, but also their phenotypic diversity, ecological importance and ancient history. ... -
Kalkområdene i Snåsa og Steinkjer, Nord-Trøndelag – oaser for sjeldne karplanter, moser, lav og sopp
Holien, Håkon; Brandrud, Tor Erik; Hassel, Kristian (Journal article; Peer reviewed, 2018)The calcareous areas of Snåsa and Steinkjer municipalities have for a long time been well known for their rare vascular plants including several redlisted orchids such as Cypripedium calceolus, Epipogium aphyllum and Ophrys ... -
Kartlegging av biologisk mangfold med hovedvekt på lav og moser. Liafossen og Storfossen i Holvasselva, Rissa kommune
Hassel, Kristian; Holien, Håkon (Norges teknisk-naturvitenskapelige universitet, Vitenskapsmuseet, Botanisk notat, 0804-0079; 2005:8, Research report, 2005) -
Lake sediment multi-taxon DNA from North Greenland records early post-glacial appearance of vascular plants and accurately tracks environmental changes
Epp, Laura; Gussarova, Galina; Boessenkool, Sanne; Olsen, J.; Haile, J; Schrøder-Nielsen, Audun; Ludikova, A.; Hassel, Kristian; Stenøien, Hans K.; Funder, S.; Willerslev, Eske; Kjær, K.; Brochmann, Christian (Journal article; Peer reviewed, 2015)High Arctic environments are particularly sensitive to climate changes, but retrieval of paleoecological data is challenging due to low productivity and biomass. At the same time, Arctic soils and sediments have proven ... -
Land of retreating glaciers – checklist of liverworts on Svalbard
Söderström, Lars; Konstantinova, Nadezhda A; Hagborg, Anders; Prestø, Tommy; Hassel, Kristian; von Konrat, Matt (Journal article; Peer reviewed, 2021)The checklist of liverworts of the Svalbard archipelago contains all published data on the occurrence of liverworts in the Svalbard archipelago. The list includes 105 species, five more reported species that only doubtfully ... -
Life history characteristics and genetic variation in an expanding species, Pogonatum dentatum.
Hassel, Kristian (Doctoral thesis, 2003)The main objective of this thesis is to get a better understanding of the processes behind species range expansions and the consequences for variation in life history characters and genetic variation. The thesis focuses ... -
Lokalisering av forbrenningsanlegg i Skjørdalen, Verdal kommune. Konsekvensutredning
Hassel, Kristian (Norges teknisk-naturvitenskapelige universitet, Vitenskapsmuseet, Botanisk notat, 0804-0079; 2005:5, Research report, 2005) -
Long-distance dispersal and barriers shape genetic structure of peatmosses (Sphagnum) across the Northern Hemisphere
Kyrkjeeide, Magni Olsen; Hassel, Kristian; Flatberg, Kjell Ivar; Shaw, A. Jonathan; Brochmann, Christian; Stenøien, Hans K. (Journal article; Peer reviewed, 2016)Aim Disjunctly distributed peatmosses (Sphagnum) have been found to exhibit little genetic structure over regional and intercontinental scales, mainly caused by high ability for transoceanic long-distance dispersal. ... -
Long-term land-use and landscape dynamics in Budalen, central Norway
Solem, Thyra Lise; Aune, Egil Ingvar; Daverdin, Marc; Hassel, Kristian; Sjøgren, Per Johan E; Stenvik, Lars; Tretvik, Aud Mikkelsen; Øien, Dag-Inge; Austrheim, Gunnar (Journal article; Peer reviewed, 2012)Humans have used resources in mountain landscapes for thousands of years, but the intensity and continuity of different land uses and the corresponding landscape changes are not well understood. This study examined long-term ... -
Lophozia lantratovae Bakalin new to northern Europe
Söderström, Lars; Hassel, Kristian; Prestø, Tommy (Journal article; Peer reviewed, 2022) -
Molecular Species Delimitation in the Racomitrium canescens Complex (Grimmiaceae) and Implications for DNA Barcoding of Species Complexes in Mosses
Stech, M; Veldman, S; Larrain, J; Muñoz, Jesus; Quandt, D; Hassel, Kristian; Kruijer, H (Journal article; Peer reviewed, 2013)In bryophytes a morphological species concept is still most commonly employed, but delimitation of closely related species based on morphological characters is often difficult. Here we test morphological species circumscriptions ... -
Morphological ontogeny of Platynothrus troendelagicus sp. nov. (Acari, Oribatida, Camisiidae) from Norway
Seniczak, Anna; Seniczak, Stanislaw; Hassel, Kristian; Flatberg, Kjell Ivar (Peer reviewed; Journal article, 2022)The morphological ontogeny of Platynothrus troendelagicus A. et S. Seniczak sp. nov. is described and illustrated. This species was found in two Atlantic raised bogs in Trøndelag, Norway, and based on comparison of cytochrome ... -
Mosses (Bryophyta) and liverworts (Marchantoiphyta) of the Zackenberg valley, northeast Greenland
Hassel, Kristian; Prestø, Tommy; Zechmeister, H (Journal article; Peer reviewed, 2014)The moss and liverwort flora of Zackenberg valley in the Northeast Greenland National Park has been studied based on field investigations and literature survey. Altogether 212 taxa are recorded in the area, with 43 liverworts ... -
Naturindeks for Norge: Evaluering av indikatorer innen åpent lavland
Johansen, Line; Carlsen, Thomas; Hassel, Kristian; Kallioniemi, Eveliina; Staverløkk, Arnstein; Pedersen, Bård; Wehn, Sølvi (NIBIO Rapport;, Research report, 2019)