The subject of this thesis is interaction between market prices and consumption taxes. The thesis contains analysis of influence of consumption taxes on market prices of five chosen goods, monitors possible causes, observes and quantifies the amount of additionally imposed tax, which is beard by consumer or producer of the good. The analysis of consumption taxes influence on market prices is performed by methods of correlation and regression analysis. Analyzed products are petrol "natural 95" (unleaded), diesel oil, cigarettes Petra and Sparta, dark rum and beer. Prices of these goods are monitored by Czech Statistical Office. First part of this thesis contains mostly theoretical introduction and impact theory of taxes. Second part deals with particular consumption taxes and their short-term impact. The third part of this thesis contains the statistical analysis.

This is a thesis in Media and Communication Studies at the Department of Informatics and Media, Uppsala University; “Systembolaget's marketing - a little clever like that” (Systembolagets marknadsföring - lite fiffig sådär) written by Hanna Bjurenborg and Emma Lundemo Dahlin. This is a qualitative study that examines consumers' experience of Systembolaget's marketing. We have been using two different methods in this thesis. These methods are two focus group discussions and a web survey. We chose to combine our two methods in order to achieve a more valid result. By combining these two we got both a more general result and also a deeper understanding on how our respondents experience Systembolaget’s marketing. The aim of this thesis is to elucidate what the messages are in Systembolaget’s marketing, how these messages are perceived by the consumer and whether consumers feel that Systembolaget's marketing affects their buying habits. We want to investigate whether consumers believe that the selected campaigns in our study contribute to a change in their consumption from their own perspective. Based on the results of the material we collected in this study we see that depending on whether the message in the ad is seen as good or bad can be a result, if the customers thought the message was clear and easy to encode. There is also a clear pattern seen in the study that if the ad generates an emotion it receives more attention than if it is simply informative.

Presence of coastal aquaculture activities in marine landscapes is growing. However, there is insufficient knowledge on the subsequent ecological interactions between these activities and marine fish communities. The overall aim of this thesis was to evaluate the direct and indirect ecological effects of aquaculture activities on marine fish communities in Scotland. A combination of empirical and modelling approaches was employed to collect evidence of how aquaculture activities affect marine fish communities at the individual, population and ecosystem levels around coastal sea cages. The two fish farms evaluated in this research provided the wild fish sampled near the sea cages with a habitat rich in food resources which is reflected in an overall better biological condition. Results of the stomach content analysis indicated that mackerel (Scomber scombrus), whiting (Merlangius merlangus) and saithe (Pollachius virens) sampled near sea cages consumed wasted feed which was also reflected in their modified FA profiles. The overall effects of the two fish farms were more pronounced in young whiting and saithe than in mixed aged mackerel sampled near the sea cages. The phase space modelling approach indicated that the overall potential for fish farms to act at the extremes as either population sources (a habitat that is rich in resources and leads to an overall improved fitness) or ecological traps (a habitat that appears to be rich in resources but is not and leads to an overall poor fitness) are higher for juvenile whiting than for mackerel. Based on the empirical evidence and literature the two fish farms are more likely to be a population source for wild fishes. Using an ecosystem modelling approach indicated that fish farming impacts the food web in a sea loch via nutrient loading. Mussel farming relies on the natural food resources and has the potential to affect the food web in a sea loch via competing with zooplankton for resources which can affect higher trophic levels. The presence of both activities can balance the overall impact in a sea loch as compared to the impact induced if each of these activities were present on their own. Both activities have the potential do induce direct and indirect effects on the wild fish and the entire sea loch system. The results of this PhD identified several gaps in data and thus could be used to improve future sampling designs. It is important to evaluate the cumulative effect of the presence of aquaculture activities in terms of nutrient loading and physical structure in the environment. Using a combination of empirical and modelling approaches is recommended to gain further insight into the ecological impacts of aquaculture activities on wild fish communities. Results of this PhD study could lead to more informed decisions in managing the coastal aquaculture activities. Establishing coastal fish farms as aquatic sanctuaries can be of an advantage to increase fish production and conserve species that are endangered provided that no commercial and recreational fishing is allowed nearby. It would be useful to have long term monitoring of the fish stocks around the cages and if there is any production at the regional level. Additionally, information on behaviour, migration patterns should be collected to understand the impacts of aquaculture activities on fish stocks. From an aquaculture perspective, ecologically engineered fish farms in addition to careful site selection in new aquaculture developments may improve nutrient loading into the ecosystem.