Now showing items 78-97 of 224

  • Kalleson, Elin (Doctoral thesis / Doktoravhandling, 2009)
    The Gardnos structure in Hallingdal, Norway is an eroded impact crater, presently consisting of impactites and crater infill sediments exposed within a roughly circular area of about five km diameter. Investigations in ...
  • Marthinsen, Gunnhild (Doctoral thesis / Doktoravhandling, 2007)
    The mapping of genealogical relationships between individuals, populations, subspecies and species is important for studies of evolutionary processes and biodiversity, and for conservation decisions. In this thesis, I have ...
  • Hogner, Silje (Doctoral thesis / Doktoravhandling, 2012)
    The process of speciation is the splitting of single populations into two or more distinct, reproductively isolated taxa. Common modes of speciation are sympatric, allopatric and parapatric speciation, with speciation in ...
  • Lindqvist, Charlotte; Roy, Tilottama; Lydersen, Christian; Kovacs, Kit M; Aars, Jon; Wiig, Øystein; Bachmann, Lutz (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
    Background The population size of Atlantic walruses (Odobenus rosmarus rosmarus) is depleted relative to historical abundance levels. In Svalbard, centuries of over-exploitation brought the walrus herds to ...
  • Wondimu, Tigist; Gizaw, Abel; Tusiime, Felly Mugizi; Masao, Catherine; Abdi, Ahmed Abdikhadir; Hou, Yan; Nemomissa, Sileshi; Brochmann, Christian (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    The scattered eastern African high mountains harbor a renowned and highly endemic flora, but the taxonomy and phylogeographic history of many plant groups are still insufficiently known. The high-alpine populations of the ...
  • Gustafsson, A Lovisa S; Skrede, Inger; Rowe, Heather C.; Gussarova, Galina; Borgen, Liv; Rieseberg, Loren; Brochmann, Christian; Parisod, Christian (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
    Crossing experiments indicate that hybrid sterility barriers frequently have developed within diploid, circumpolar plant species of the genus Draba. To gain insight into the rapid evolution of postzygotic reproductive ...
  • Larsson, John; Nylander, Johan A; Bergman, Birgitta (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
    Background Cyanobacteria belong to an ancient group of photosynthetic prokaryotes with pronounced variations in their cellular differentiation strategies, physiological capacities and choice of habitat. ...
  • Hansen, Lars Ove; Berggren, Kai (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 1999)
    The genus Nothochrysa is reported for the first time from Norway. The two species N. flaviceps (Stephens, 1836) and N. capitata (Fabricius, 1793) were captured in light-traps in Kristiansand (VAY) in 1999. The biology and ...
  • Bakkestuen, Vegar (Doctoral thesis / Doktoravhandling, 2009)
    As a starting point GIS (geographical information systems) seem intuitively to be a practical tool for biologists performing ecological research. GIS conveniently stores, explores, analyses and visualizes biological/ecol ...
  • Milner, Alexander M.; Khamis, Kieran; Battin, Tom J.; Brittain, John Edward; Barrand, Nicholas E.; Füreder, Leopold; Cauvy-Fraunie, Sophie; Gíslason, Gísli Már; Jacobsen, Dean; Hannah, David M.; Hodson, Andrew J.; Hood, Eran; Lencioni, Valeria; Ólafsson, Jón S.; Robinson, Christopher T.; Tranter, Martyn; Brown, Lee E. (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
    Glaciers cover ∼10% of the Earth’s land surface, but they are shrinking rapidly across most parts of the world, leading to cascading impacts on downstream systems. Glaciers impart unique footprints on river flow at times ...
  • Vanni, Michael; McIntyre, Peter; Allen, Dennis; Arnott, Diane,L.; Benestad, Jonathan, P.; Berg, David, J.; Brabrand, Åge; Brosse, Sebastien; Bukaveckas, Paul, A.; Caliman, Adriano; Capps, Krista, A.; Carneiro, Luciana, S.; Chadwick, Nanette, E.; Christian, Alan, D.; Clarke, Andrew; Condroy, Joseph, D.; Cross, Wyatt, F.; Culver, David, A.; Dalton, Christopher, M.; Devine, Jennifer, A.; Domine, Leah, M.; Evans-White, Michelle, A.; Faafeng, Bjørn A.; Flecker, Aleksander, S.; Keith, B. Gido; Godinot, Claire; Guariento, Rafael D.; Haertel-Borer, Susanne; Hall, Robert, O.; Henry, Rauol; Herwig, Brian, R.; Hicks, Brendan, J.; Higgins, Karen, A.; Hood, James M.; Hopton, Matthew E.; Ikeda, Tsutomu; JAMES, WILLIAM F.; Jansen, Henrice M; JOHNSON, CODY R.; KOCH, BENJAMIN J.; LAMBERTI, GARY A.; LESSARD-PILON, STEPHANIE; MAERZ, JOHN C.; MATHER, MARTHA E.; MCMANAMAY, Ryan A.; MILANOVICH, JOSEPH R.; MORGAN, DAI K. J.; MOSLEMI, JENNIFER M.; NADDAFI, RAHMAT; Nilssen, Jens Petter; Pagano, Marcello; PILATI, ALBERTO; POST, DAVID M.; ROOPIN, MODI; RUGENSKI, AMANDA T.; SCHAUS, MAYNARD H.; SHOSTELL, JOSEPH; SMALL, GASTON E.; Solomon, Christopher T.; STERRETT, SEAN C.; Strand, Øivind; TARVAINEN, MARJO; TAYLOR, JASON M.; TORRES-GERALD, LISETTE E.; TURNER, CAROLINE B.; Urabe, Jotaro; Uye, Shin-ichi; VENTELÄ, ANNE-MARI; VILLEGER, SÉBASTIEN; WHILES, MATT R.; WILHELM, FRANK M.; WILSON, Henry F.; XENOPOULOS, MARGUERITE A.; ZIMMER, KYLE D. (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
    Animals can be important in modulating ecosystem-level nutrient cycling, although their importance varies greatly among species and ecosystems. Nutrient cycling rates of individual animals represent valuable data for testing ...
  • Shrestha, Nawal; Wang, Zhiheng; Su, Xiangyan; Xu, Xiaoting; Lyu, Lisha; Liu, Yunpeng; Dimitrov, Dimitar; Kennedy, Jonathan D.; Wang, Qinggang; Tang, Zhiyao; Feng, Xiaojuan (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Aim: Understanding the evolution of the latitudinal diversity gradient (i.e. increase in species diversity towards the tropics) is a prominent issue in ecology and biogeography. Disentangling the relative contributions of ...
  • Gelete, Desalegn Chala; Brochmann, Christian; Psomas, Achilleas; Ehrich, Dorothee; Gizaw, Abel; Masao, Catherine; Bakkestuen, Vegar; Zimmermann, Niklaus E (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
    The main aim of this paper is to address consequences of climate warming on loss of habitat and genetic diversity in the enigmatic tropical alpine giant rosette plants using the Ethiopian endemic Lobelia rhynchopetalum as ...
  • Duskova, Eva; Sklenar, Petr; Kolár, Filip; Vasquez, Diana L A; Romoleroux, Katya; Fer, Tomas; Marhold, Karol (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Changes in growth forms frequently accompany plant adaptive radiations, including páramo–a high‐elevation treeless habitat type of the northern Andes. We tested whether diverse group of Senecio inhabiting montane forests ...
  • Hahn, Christoph (Doctoral thesis / Doktoravhandling, 2014)
    The present PhD thesis, entitled “Gyrodactylids on European salmonids hosts: genomics, phylogeography and speciation”, presents a number of significant contributions to the field of evolutionary biology. It offers novel ...
  • Sverdrup-Thygeson, Anne; Skarpaas, Olav; Blumentrath, Stefan; Birkemoe, Tone; Evju, Marianne (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Intensified human land use continues to increase habitat loss and fragmentation, and leads to a homogenization of biodiversity. Specialized species with narrow niches seem to be declining more rapidly than generalist ...
  • Friis, Henrik; Weller, Mark T.; Kampf, Anthony R. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    The new mineral hansesmarkite (IMA2015-067), Ca2Mn2Nb6O19·20H2O, was discovered at the AS Granit larvikite quarry in Tvedalen, Larvik, Vestfold, Norway. Hansesmarkite forms faintly yellow crystals up to 0.3 mm or thin ...
  • Zalesny, Grzegorz; Hildebrand, Joanna; Paziewska, Anna; Behnke, J.M.; Harris, Philip David (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
    Background: Heligmosomoides polygyrus is a widespread gastro-intestinal nematode infecting wild Apodemus (wood mice) throughout Europe. Using molecular and morphological evidence, we review the status of Heligmosomoides ...
  • Veldman, Sarina; Gravendeel, Barbara; Otieno, Joseph; Lammers, Youri; Duijm, Elza; Nieman, Aline; Bytebier, Benny; Ngugi, Grace; Martos, Florent; van Andel, TR; de Boer, Hugo (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Chikanda is a traditional dish made with wild-harvested ground orchid tubers belonging to three orchidioid genera, Disa, Satyrium and Habenaria, all of which are CITES appendix II-listed. Identification of collected orchid ...
  • 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 / Tidsskriftartikkel / PublishedVersion; 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 ...