Now showing items 51-60 of 162
Spatial and temporal variations in parasite communities of freshwater fish in the subarctic
(Doctoral thesis; Doktorgradsavhandling, 2015-11-03)
Parasite communities are complicated systems believed to be affected by multiple ecological and environmental factors, both in time and space. These communities might be disrupted by anthropogenic host introductions which unfortunately appear to be a common practice e.g. in freshwater fish management. By addressing parasite occurrences in three of the most common freshwater fish species in subarctic ...
Ecology of a tropical bay and the social aspects of small-scale fisheries: Implications for management
(Doctoral thesis; Doktorgradsavhandling, 2015-09-02)
Antecedents and outcomes of exporter – importer relationship quality - An exporting developing country’s context
(Doctoral thesis; Doktorgradsavhandling, 2015-11-13)
Nest predation in birds of conservation concern. Case studies of monitoring and management.
(Doctoral thesis; Doktorgradsavhandling, 2015-06-12)
In this thesis I have used a variety of study methods at different spatial and temporal scales to explore population processes and management of 2 bird species of conservation concern, common eider and Slavonian grebe, focusing particularly on the role of nest predation in declining populations. I have demonstrated the role of proximate and ultimate causes of nest loss in eider at 2 declining colonies ...
Replacement of fishmeal with alternative proteins in diets for Atlantic salmon (Salmo salar L.): A study on the microbiota, morphology and function of the intestine
(Doctoral thesis; Doktorgradsavhandling, 2015-06-16)
The research presented in this thesis aims to gain knowledge on the impact of a variety of alternative feed ingredients for which there is an increasing use for in Atlantic salmon feed. In focus were effects on the community population and metabolism of intestinal microbiota, its ability to compete with pathogens, gut physiology and health as well as fish performance and feed utilization. The results ...
The Economics of Open-Access Fisheries: Subsidies and Performance of Vietnamese Fisheries
(Doctoral thesis; Doktorgradsavhandling, 2016-03-10)
This dissertation focuses on analysing the economics of an open-access fishery and on evaluating the effects of government subsidy programmes on the fishing industry. The dissertation adopts a sustainable development perspective for assessing the effects of subsidies. Although the key focus of the research is on the economic effects of subsidies, the ecological and social dimensions are taken into ...
Effects of local and regional drivers on plant diversity within tundra landscapes
(Doctoral thesis; Doktorgradsavhandling, 2015-12-21)
In tundra, the diversity within vascular plant communities (alpha diversity) is known to be determined by local drivers such as habitat productivity and ungulate grazing. However, little is known how such local drivers modify the diversity between communities (beta diversity). Furthermore, diversity patterns may be constrained by the size of the regional species pool, which in turn may mediate the ...
"Bioactivity profile of barettin - With special focus on anti-inflammatory, antioxidant and anticoagulant activities"
(Doctoral thesis; Doktorgradsavhandling, 2015-04-17)
The diversity of the marine species inhabiting the oceans makes them highly interesting as potential sources of bioactive molecules for various applications. The extreme environment in the Barents Sea, in terms of temperature and light availability, have forced its organisms to adapt to their surroundings by developing unique biomolecules, and Arctic marine organisms are therefore an excellent ...
Understanding researchers’ intention and habit regarding publishing in open access journals
(Doctoral thesis; Doktorgradsavhandling, 2018-12-13)
Scholarly publishing is the vessel for the dissemination of research articles. Contemporary scholarly publishing is achieved by two main models, open access (OA) and non-open access (non-OA). OA refers to articles that are available at no cost to the end-user; however, authors may incur a fee for accepted manuscripts. Non-OA articles are available at a cost, either via subscriptions or via individual ...
Seaweed proteins - how to get to them? Effects of processing on nutritional value, bioaccessibility and extractability
(Doctoral thesis; Doktorgradsavhandling, 2016-03-11)
As a consequence of the expected population growth towards 2050, the demand for food, and in particular proteins, will increase. Due to limited resources of arable land and freshwater, this increase cannot come in the agricultural sector alone. At present, the utilization of marine environments for food production is low and should be increased. Seaweeds are fast-growing plants occurring in marine ...