Now showing items 1-10 of 20
Economic analyses of user interactions in the coastal zone
(Doctoral thesis; Doktorgradsavhandling, 2008-05-05)
Marine and coastal areas contain many resource types, with many uses and user groups. Conflicts are common, both over access to the same resource, and to avoid negative effects of others’ use. Such conflicts are expected to increase in extent and severity. Being able to analyze and understand the nature and consequences of the interactions between different user groups, how it affects their behaviour ...
The effects of behaviour on the acoustic target strength of capelin (Mallotus villosus) and implications for acoustic abundance estimation
(Doctoral thesis; Doktorgradsavhandling, 2004)
The general objective of this thesis was to collect improved knowledge about the target strength (TS) of capelin (Mallotus villosus) through experimental studies, as well as to undertake adequate observations of behaviour of capelin during surveying situations, including the effect of different depth distributions and of vessel avoidance. Pre- and post-spawning capelin from the Balsfjord and the ...
Effect of viral RNA mimics and ISA virus infection on expression of key genes of the Atlantic salmon interferon system
(Doctoral thesis; Doktorgradsavhandling, 2008)
We have studied the innate immune responses of Atlantic salmon and how this responds to stimulation and infection by the aquatic orthomyxovirus Infectious salmon anemia virus (ISAV). This work has focused on the Type I interferon (IFN) system which is critically important in the vertebrate immune response against viral infections. As a part of this work we have studied the Atlantic salmon IFN ...
Fiskeren som forsvant? En studie av avfolking, overbefolking og endringsprosesser i norsk fiskerinæring
(Doctoral thesis; Doktorgradsavhandling, 2003-02-28)
Hva er en fisker? Dette er det sentrale spørsmålet i denne avhandlinga. Spørsmålet er utgangspunkt for å utforske endringsprosesser i fiskerinæringa, både i fortida og i samtida. På bakgrunn av dette drøfter avhandlinga hvilke oppfatninger, forståelser og beskrivelser som til enhver tid benyttes til å definere hva fiskere er i ulike sammenhenger. Undersøkelsen starter i det som kan kalles ...
The potential for cooperation in shared fisheries : theory and application to Vietnam's fisheries strategy in the South China Sea
(Doctoral thesis; Doktorgradsavhandling, 2009-06-05)
Since the end of the 20th century, many shared fish stocks throughout the world have been found in extreme danger of collapse. There are many calls for cooperation in utilizing and conserving the shared fish resources including the 1982 UN Convention on the Law of the Sea and the 1995 UN Fish Stock Agreement. This study provides an important rationale for cooperation in utilizing a shared fish stock ...
Animal-habitat relationships in high altitude rangelands
(Doctoral thesis; Doktorgradsavhandling, 2008-09-18)
This study conducted in the high altitude rangelands of Indian Transhimalaya, deals with basic questions regarding the ecology of an endangered species, the wildsheep Tibetan argali (Ovis ammon hodgsoni) and applied issues related to its conservation and potential conflict with the local nomadic pastoralists. The basic questions on ecology are aimed at delineating the habitat and resource selection ...
Boundary construction in mandated science : the case of ICES' advice on fisheries management
(Doctoral thesis; Doktorgradsavhandling, 2008-11-21)
What is the relationship between science and politics? What should it be? How are their respective roles conceived and acted out in practice? Should science and politics be clearly separated? How? Are there cases in which they can be usefully mixed? What cases are those, and are there some ways of mixing that are better than others? This project explores such questions by examining relationships ...
Information in financial markets : how private information affects prices, how it can be revealed and how it may be used
(Doctoral thesis; Doktorgradsavhandling, 2008-06-06)
The literature on financial markets is vast and it is probably safe to say that all tools in the economists’ tool case have been applied to this field. In this dissertation I will present three papers that are very diverse in their approach to the subject of finance, but have an important common theme; asymmetric information and efficiency in financial markets.
Essays on the economics of marine protected areas and fisheries management
(Doctoral thesis; Doktorgradsavhandling, 2009-11-20)
Even though the oceans occupy more than 70% of the earth’s surface and 95% of the biosphere (National Research Council, 2001), marine habitats have undergone a substantial decline over the last few decades, and most of which is attributable to fishing. In this regard, marine reserves or marine protected areas (MPAs) are proposed as tools to relieve stresses on marine resources and ecosystems. Despite ...
Studies of infectious pancreatic necrosis virus (IPNV) and immune evasion strategies
(Doctoral thesis; Doktorgradsavhandling, 2009-10-23)
Infectious pancreatic necrosis (IPN) is a highly contagious disease which causes huge economic loss to the salmon farming industry world wide. The causative agent, the IPN virus (IPNV), is a dsRNA, non-enveloped virus with two genomic segments encoding five viral proteins, VP1-VP5. <br>Available vaccines against this disease give only partial protection. In order to optimize vaccine efficacies, ...