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Viser treff 11-20 av 20
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 ...
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 ...
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 ...
Dendroclimatology on Scots pine (Pinus sylvestris L.) in northern Norway
(Doctoral thesis; Doktorgradsavhandling, 2000-03-17)
A total of ten tree-ring chronologies of Scots pine, Pinus sylvestris L., was constructed between the Vesterålen archipelago and the Finnmarksvidda in order to investigate the regional variability of radial growth and climate response of pine. The longest tree-ring chronology, located in Forfjorddalen in Vesterålen, was highly significant back to AD 1354. The study area was divided into three ...
A bioeconomic perspective on the Norwegian Barents Sea cod fishery
(Doctoral thesis; Doktorgradsavhandling, 2008-11-14)
Green sea urchin (Strongylocentrotus droebachiensis,Müller) in aquaculture: the effects of environmental factors on gonad growth.
(Doctoral thesis; Doktorgradsavhandling, 2009-10-30)
Ved hjelp av eksperimentelle studier har en undersøkt effekten av ulike miljøfaktorer på gonadevekst hos Drøbak-kråkebolle i oppdrett. Dette inkluderer effekten av temperatur, størrelse, sesong, individtetthet og forskjellige vannkvalitetsparametre (O2, CO2, nitritt, ammoniakk) og håndtering på overlevelse, gonadevekst, fôrinntak og fôrutnyttelse.
Optimal temperatur for gonadevekst hos voksne ...
Reproductive biology of the calanoid copepod, Eudiaptomus graciliodes (Lilljeborg): Polyandry, Phenology and Life Cycle Strategies
(Doctoral thesis; Doktorgradsavhandling, 2007-12-19)
Upstream vertical integration and financial performance : the case of the Norwegian fish processing industry
(Doctoral thesis; Doktorgradsavhandling, 2007-06-08)
In this thesis, four different articles address the correlation between vertical integration and profitability in the Norwegian fish processing industry. By vertical integration we mean the ownership and control of one firm over different stages in the value chain. Firms within this industry consider the uncertain supply of fish as a main challenge. Literature prescribes vertical integration as an ...
Essays on exploitation of natural resources : optimal control theory applied on multispecies fisheries and fossil fuel extraction
(Doctoral thesis; Doktorgradsavhandling, 2009-09-18)
Understanding and practising market orientation : exploring how managers cope in turbulent environments
(Doctoral thesis; Doktorgradsavhandling, 2001-11-23)
Ottesens doktorgrad fokuserer på hva det innebærer å være markedsorientert for bedrifter i fiskerinæringen. I næringsmessige debatter blir det ofte påpekt at norsk fiskeindustri må bli mer markedsorientert. Mens begrepet markedsorientering har blitt et moteord som brukes av både politikere og næringsliv, blir det sjelden klargjort hva dette innebærer. Resultatene fra avhandlingen avdekker hvordan ...