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Tree thinking cannot taken for granted: challenges for teaching phylogenetics
(Journal article; Tidsskriftartikkel; Peer reviewed, 2008-02-05)
Tree thinking is an integral part of modern
evolutionary biology, and a necessary precondition for
phylogenetics and comparative analyses. Tree thinking has
during the 20th century largely replaced group thinking,
developmental thinking and anthropocentricism in biology.
Unfortunately, however, this does not imply that tree
thinking can be taken for granted. The findings reported
here indicate ...
Genetically modified food : the dilemma of Africa
(Journal article; Tidsskriftartikkel; Peer reviewed, 2008)
Management of reindeer husbandry in Norway – power-sharing and participation
(Journal article; Tidsskriftartikkel; Peer reviewed, 2008)
Many governments have come to realize that the best way to manage natural resources is to include the resource users in order to increase legitimacy for governance. For the Sami reindeer industry, the Norwegian government has implemented two different management models in order to meet this challenge. On the one hand, there is a corporative management model where a few democratically elected reindeer ...
Identification and characterisation of novel SNP markers in Atlantic cod: evidence for directional selection
(Journal article; Tidsskriftartikkel; Peer reviewed, 2008-02-26)
Background:
The Atlantic cod (Gadus morhua) is a groundfish of great economic value in fisheries and an emerging species in aquaculture. Genetic markers are needed to identify wild stocks in order to ensure sustainable management, and for marker-assisted selection and pedigree determination in aquaculture. Here, we report on the development and evaluation of a large number of Single Nucleotide ...
Screening for antibacterial and antifungal activities in marine benthic invertebrates from northern Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2008-06-18)
Benthic marine invertebrates collected from sub-Arctic regions of northern Norway, were found to be a promising source of novel bioactive compounds against human and fish pathogenic bacteria and fungi. Lyophilized material from seven species of ascidians, six sponges and one soft alcyonid coral were extracted with 60% acidified acetonitrile (ACN). After separation into an ACN-rich phase (ACN extract) ...
Changes in swimming depths of Atlantic salmon Salmo salar post-smolts relative to light intensity
(Journal article; Tidsskriftartikkel; Peer reviewed, 2008-06-22)
Eight hatchery-reared Atlantic salmon Salmo salar post-smolts, implanted with acoustic depth sensing transmitters and manually tracked for 5-12 h in the Hardangerfjord (Norway), spent most of their time (49-99%) at 1-3 m depth during the day, whereas four of seven fish tracked were found close (<0.5 m) to the surface at night, with a strong negative cross-correlation between general swimming depth ...
Mellom marked og nettverk: Om fiskerirekruttering og sysselsettingsystemer i fiske
(Journal article; Tidsskriftartikkel; Peer reviewed, 2008-08-15)
Denne rapporten er skrevet som en del av prosjektet "Networks or markets? The recruitment challenges in future fisheries and marine industries"; finansiert av Norges forskningsråd og Fiskeri og havbruksnæringens forskningsfond. Formålet med rapporten er å presentere kvantitativt datamateriale om sysselsettingssystemet i fiskeflåten. Rapporten bygger på et datamateriale fremskaffet gjennom telefonintervjuer ...
The distribution of chondrichthyans along the northern coast of Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2008-06-27)
The relationship between temperature, latitude, and depth and the distribution and relative abundance of chondrichthyans along the northern coast of Norway was examined based on catches made in scientific trawls north of 628N from 1992 to 2005. It appears that Chimaera monstrosa, Etmopterus spinax, Squalus acanthias, and Galeus melastomus were more abundant in the south, and Amblyraja radiata more ...
Do Norwegian Atlantic salmon feed in the northern Barents Sea? Tag recoveries from 70 to 78 degrees N
(Journal article; Tidsskriftartikkel; Peer reviewed, 2008-01-13)
Three tagged Atlantic salmon Salmo salar were recaptured as subadults/adults (1.4 - 3 kg) between 70.5º - 78º N in the western Barents Sea; two of the fish originated from the Alta Fjord region in northern Norway and one from the Drammen River, south-eastern Norway. An additional tag was recovered from the stomach of a Greenland halibut captured south-west of Bear Island at >600m depth; this tag was ...
Long-term responses of zooplankton to invasion by a planktivorous fish in a subarctic watercourse
(Journal article; Tidsskriftartikkel; Peer reviewed, 2008-08-13)
<p>1. Introduced or invading predators may have strong impacts on prey populations of the recipient community mediated by direct and indirect interactions. The long‐term progression of predation effects, covering the invasion and establishment phase of alien predators, however, has rarely been documented.</p>
<p>2. This paper documents the impact of an invasive, specialized planktivorous fish ...