Browsing Biologisk institutt ( -2012) by Title
Now showing items 200-219 of 406
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(Master thesis / Masteroppgave, 2006)Fluctuating asymmetry (FA) as a measure of environmental stress was studied in polar bear (Ursus maritimus) skulls from East Greenland (n = 300, collected during the period 1892-2004) and Svalbard (n = 391, collected during ...
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(Master thesis / Hovedoppgave, 2005)Abstract Patterns in time series are observational records of past ecological processes, and identifying these processes remains a major challenge to population ecologists. Until recently, analysis of time series has ...
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The fungal community associated with roots of alpine and arctic Dryas octopetala along a latitudinal gradientRestricted Access (Master thesis / Masteroppgave, 2009)The ectomycorrhizal (ECM) dwarf shrub Dryas octopetala is one of the hardiest and most abundant of all woody plant groups in alpine and arctic environments. The main aim of this study was to characterise the fungal communities ...
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(Doctoral thesis / Doktoravhandling, 2008)High nitrate (NO3) leaching rates have been observed in mountain and heathland areas in Europe at sites receiving high levels of nitrogen (N) deposition. These areas are characterised by sparse vegetation on thin, patchy ...
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(Master thesis / Masteroppgave, 2005)The presence of gastrointestinal nematodes is considered to be a problem in domestic cattle, and various studies have tried to present reasons for and solutions to this problem. A study was conducted in Southern Norway in ...
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(Master thesis / Hovedoppgave, 2005)The delimitation of the genera Anthericum and Chlorophytum has up to now been based on morphological and cytological data. In this study I discuss previous generic delimitations based on DNA sequence data from European and ...
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(Doctoral thesis / Doktoravhandling, 2008)In most cases, the proliferation of marine planktonic alga is ecologically beneficial for the marine food web. However, harmful algal blooms can have negative effects by causing fish kills. In this PhD thesis particularly ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2009)Background Genetic variation has been shown to play a significant role in determining susceptibility to the salmon louse, Lepeophtheirus salmonis. However, the mechanisms involved in differential response ...
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(Master thesis / Hovedoppgave, 2005)Abstract Juniperus procera is a long-lived quality timber species that is endangered in its entire African distribution and listed as lower risk near threatened (LR-nt) in IUCN Red Data List for Malawi. It is characterized ...
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(Master thesis / Masteroppgave, 2008)The control region (CR) of the mitochondrial DNA has been previously used to decipher the population structure of Holocene bowhead whales (Balaena mysticetus) from the Spitsbergen stock. The bone samples dated from recent ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)When plastids are transferred between eukaryote lineages through series of endosymbiosis, their environment changes dramatically. Comparison of dinoflagellate plastids that originated from different algal groups has revealed ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)Atlantic cod (Gadus morhua) is a large, cold-adapted teleost that sustains long-standing commercial fisheries and incipient aquaculture. Here we present the genome sequence of Atlantic cod, showing evidence for complex ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2010)Background The vertebrate globin genes encoding the α- and β-subunits of the tetrameric hemoglobins are clustered at two unlinked loci. The highly conserved linear order of the genes flanking the hemoglobins ...
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(Master thesis / Masteroppgave, 2012)5-hydroxymethylfurfural (HMF) is formed in the Maillard reaction when reduced sugars are heated in the presence of amino acids or proteins. It can also be formed during direct thermal dehydration of fructose and sucrose, ...
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(Master thesis / Hovedoppgave, 2005)Geografisk variasjon i metaller og metallotionein i lever hos bergnebb (Ctenolabrus rupestris) og skrubbe (Platichthys flesus) langs den norske Skagerrakkysten. Med utgangspunkt i 6 områder langs Skagerrakkysten, spredt ...
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(Master thesis / Masteroppgave, 2009)During the last 50 years several changes has occurred in the flora of Oslofjord region. The Crambe maritima populations in the Oslofjord region have increased in size and number, the Eryngium maritimum populations seem ...
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(Master thesis / Masteroppgave, 2009)Abstract Previous studies have revealed increased levels of germline mutations in minisatellite DNA in populations of herring gulls and mice sampled in Hamilton Harbour, Ontario Canada, an industrial area with high emissions ...
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(Master thesis / Masteroppgave, 2005)There is considerable controversy regarding the effect of sheep grazing on reindeer populations in Norway. Sheep grazing during summer may affect the critical fall, winter and spring range conditions for reindeer either ...
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(Master thesis / Masteroppgave, 2006)The aim of this study was to investigate to what extent population density and small scale habitat variability affect somatic growth of resident, stream-living brown trout Salmo trutta. There is an ongoing debate whether ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2009)Background Although some mechanisms of habitat adaptation of conspecific populations have been recently elucidated, the evolution of female preference has rarely been addressed as a force driving habitat ...