Now showing items 181-185 of 185
Life history and distribution of the edible crab (Cancer pagurus) in Norway - Effect of temperature and other environmental parameters at high latitudes
(Doctoral thesis; Doktorgradsavhandling, 2019-06-25)
The overall aim of this study has been to provide information on how environmental conditions in Norway might affect the life history and distribution of the edible crab (<i>Cancer pagurus</i>). The results show that the size at which female crabs reach physiological maturity vary little, and just randomly, across northern Europe, and among latitudinally separated areas within Norway. Analysis of ...
Marine food-web structure and community patterns in high-latitude marine ecosystems
(Doctoral thesis; Doktorgradsavhandling, 2016-06-24)
This PhD deals with spatial and temporal community patterns in Barents Sea marine food webs and benthic communities in Svalbard. A main aim of this PhD project has been to study how community and food-web structure changes along environmental and climatic gradients, and to elucidate how species respond to climate warming in the Arctic. We used network analysis to study how the network of who eats ...
Isolation and Charecterization of New secondary metabolites from the Arctic Bryozoans Securiflustra securifrons and Dendrobeania murrayana
(Doctoral thesis; Doktorgradsavhandling, 2019-08-30)
Marine bryozoans is a prolific source of structurally diverse bioactive secondary metabolites. However, the total number of natural products isolated from marine bryozoans is limited, The present study was focused on isolation and characterization of new compounds from Arctic marine bryozoans. The novel compounds were isolated by using two different approaches. For bioassay-guided isolation, fractions ...
The impact of entrepreneurship education on students' career reflections
(Doctoral thesis; Doktorgradsavhandling, 2019-11-25)
The thesis aims to explore the impact entrepreneurship education (EE) has on students’ career reflections. EE has developed significantly in both scope and importance over recent decades and is now being taught worldwide at all education levels. Major stakeholders, such as educators, education institutions, funders, governments and policymakers, are investing heavily in terms of human and/or financial ...
Migration in seabirds: seasonal structure in space and environment across species, populations and individuals
(Doctoral thesis; Doktorgradsavhandling, 2019-05-21)
Identifying drivers of population trends in migratory species is difficult, as they can face many stressors while moving through different areas and environments during the annual cycle. Their population response to environmental change may in addition be affected by consistent differences in individual behaviour, which are widespread in free-living populations. An understanding of the structure of ...