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Is coexistence mediated by microhabitat segregation? An in-depth exploration of a fish invasion
(Journal article; Tidsskriftartikkel; Peer reviewed, 2007)
Vendace <i>Coregonus albula</i> has invaded the subarctic Pasvik hydrosystem, northern Norway and Russia, after being translocated from its native Finnish range into Lake Inari (Finland), upstream of Pasvik. The development of the invader and the effects on two native lake communities in the upstream and downstream part of the hydrosystem, respectively, have been monitored since 1991. In the upstream ...
Árran - levende historier i landskapet
(Journal article; Tidsskriftartikkel, 2006)
Langs de gamle flytteveiene, fra innlandet over kjølen og ut til kysten, finner vi de samiske
árran – ildstedene. De ligger der som perler på en snor, og knytter bånd mellom øst og vest.
Árran ligger på boplassene i furuskogen, i tregrensen, på høyfjellet og ved havet, steder valgt
ut for hver årstid. Studier av ulike árran er kilder til forståelse av tidligere generasjoners liv og
virke. Ennå ...
Da Datatilsynet kom : En skrekkhistorie?
(Conference object; Konferansebidrag, 2006)
Gill raker morphology and feeding ecology of two sympatric morphs of European whitefish (Coregonus lavaretus)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2004)
Two whitefish morphs have been identified in lakes in northern Norway from a bimodal distribution of gill raker numbers: a sparsely- and a densely-rakered. Habitat choice and feeding ecology of whitefish were studied in five lakes with the two morphs living in sympatry, and in five lakes harbouring only the sparsely-rakered morph. In sympatry, the two whitefish morphs exhibited a strict niche ...
Predation by brown trout (Salmo trutta) along a diversifying prey community gradient
(Journal article; Tidsskriftartikkel; Peer reviewed, 2008-08-07)
Predation has a fundamental role in aquatic ecosystems, but the relative importance of factors governing prey selection by predators remains controversial. In this study, we contrast five lakes of a subarctic watershed to explore how prey community characteristics affect prey selection and growth rate of the common top predator, brown trout (<i>Salmo trutta</i>). The lakes constitute a distinct ...
Ontogenetic niche shifts and resource partitioning in a subarctic piscivorous fish guild
(Journal article; Tidsskriftartikkel; Peer reviewed, 2003-05)
The feeding ecology of three piscivorous fish species (perch (<i>Perca fluviatilis</i>), pike (<i>Esox lucius</i>) and burbot (<i>Lota lota</i>)), was studied in the subarctic Pasvik watercourse (69 ° N), northern Norway and Russia. All three species primarily occupied the benthic habitats in the watercourse. Perch and burbot exhibited distinct ontogenetic niche shifts in food resource use, perch ...
Ecological interactions and evolution: Forgotten parts of biodiversity?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2004-09-01)
<p>Organisms are shaped contemporaneously by ecological processes and over long periods of time by evolution, processes that have led to the diversification of life. But is the diversity of life all biodiversity is? We argue that biodiversity is the conclusion drawn both from the variety of life forms and from the variety of processes that have shaped them. One cannot talk about biodiversity in a ...
Flora Danica i Tromsø: Den yngre Flora Danica
(Chronicle; Kronikk, 2003-04-15)
The name Flora Danica – the flora of Denmark - is used for two richly illustrated books and a
magnificent service. The oldest book called Flora Danica was published in 1648 by physician
and anatomen Simon Paulli (1603-1680). Pauli was appointed as professor of anatomy and
surgery at the University of Copenhagen. The Danish King Christian V in 1645 gave him the
mission to get published a Herbarium ...
Library Information Literacy Education: Teaching-Learning Philosophy
(Conference object; Konferansebidrag, 2008)
UBs tjeneste for odontologistudiet ved UiT
(Conference object; Konferansebidrag, 2008)