The aim of the thesis is to analyse the preconditions for increasedsalmon angling in the remaining wild salmon rivers in Upper Norrland in northernSweden, as well as to evaluate the present and possible future impacts on the localeconomy. It includes the identification of the internal and external conditions, in what ishere called the Salmon Utilisation Landscape, that influence the present use as well asfuture development of the Baltic salmon as a resource in angling. The empirical materialsderive from two mail surveys, 1) a survey of anglers in the River Byske and 2) a jointNordic survey on the economic value of recreational fishing.Interest in recreational fishing is widespread in Sweden. About 35 % of adultSwedes fish for recreation. Recreational fishery and angling can be seen as one expressionof the urbanised society's need for contact with nature and outdoor recreation. Salmonangling is one part of recreational fishery. Salmon are considered by many to be the 'biggame' of angling. Salmon anglers are often the most devoted kind of anglers, investingconsiderable resources into this leisure activity. The subgroup of Swedish salmon anglingspecialists is estimated at 10-30,000 persons. The wider category of Active River anglersconsists of approximately 170,000 persons.Salmon fishing in the River Byske has turned out to be representative of salmonangling in Upper Norrland, comparable with other high-class Scandinavian salmon rivers.The growing proportion of remote anglers in the 1990s indicates that the Byske hasbecome a rather specialised angling water. The groups of Fishing tourists and Home fishersmake up two distinctive categories. Fishing tourists fish more intensively, have higher dailyexpenditures and show higher consumer surplus. They fish the river almost entirely forsalmon in. On the other hand, Home fishers to a large extent claim the right to fish fordecent prices and without any particular restrictions. During the 1990s, the average annualincome to the local economy of Byske river valley derived from salmon angling fishingtourism was about 850,000 SEK.Many river habitats have been depleted during the 20th century and many salmonstocks were exterminated by severe degeneration factors linked to industrialisation. To thisis added the over-fishing on wild stocks of salmon and the mortality syndrome, M74. Theavailable estimates of the potential production of wild salmon smolt in Upper Norrlandaggregates close to 1.2 million. This can be converted to an angling activity of some250,000 fishing days.On the basis of the prevailing cost level, the potential angling activity in UpperNorrland would amount to a direct annual turnover of 75 million SEK, however theimpact caused by fishing tourism is likely to remain within the interval of 10 - 30 millionSEK. The Active River anglers' average willingness to pay for annual access to a salmon andsea trout scenario was 1,100 SEK per capita. There is a widespread attitude among manyanglers that fishing should be accessible for all and prices should be kept low. In theNordic context such opinions are especially evident among Swedish anglers in general, butless frequent among devoted salmon anglers. / digitalisering@umu

UK consumers bought just under 500 thousand tonnes of seafood in 2010, at a cost of £3.8bn. Despite rising prices, consumption is on a general upwards path, with the average UK adult now eating 2% more seafood than they would have eaten a generation ago, and demand predicted to grow by a further 17% by 2030. However, this demand is increasingly restricted to a narrow range of imported and wild-caught species (Cod, Haddock, Tuna) and farmed products (Salmon and Prawns) over locally-available species with the consequence that between 60% and 80% of UK domestic landings are currently exported and 80% of all the seafood eaten in the UK is one of either Cod, Haddock, Salmon, Tuna or Prawns – the so-called Big 5. The shortage of local markets for native fish species is arguably reducing the relative viability of small scale, over large-scale, fisheries in the UK. It also increases pressure upon wild stocks of commercially valuable species and is driving the rapid expansion of fish-farming operations which can have negative environmental and social implications. Considering the above, it is suggested that UK consumers could make a positive contribution to the UK economy and marine environment if they chose to buy native, locally-caught species, over farmed and exotic imports. In order to achieve this, however, significant behavioural change would need to take place; and for behavioural change initiatives to be successful, it is argued that it is first necessary to understand why these consumption patterns have developed, i.e. Why the Big 5? Accepting that no single theory has been found that can fully explain behaviours from intentions, this research used mixed methods to develop a consumer-centric view of the full range of factors that might be driving these unsustainable consumption patterns. Regular consumers of seafood from four contrasting localities in England were recruited to complete surveys, maintain shopping diaries and to take part in group and one-to-one interviews to understand their reasons for eating seafood in general and the Big 5 in particular. Drawing on the Literature on seafood consumption, demographic and geographic-induced differences in consumption were explored; and consumer understanding of, and concern for, the sustainability of their seafood was assessed. Retail behaviour was also examined by undertaking an on-line review of the seafood offered for sale by the UK’s five largest retailers. Consumers were generally ill informed and confused about the sustainability of their seafood and had little to no awareness of labelling. In their confusion/apathy, they tended to revert to habitual behaviours and safe choices tending towards the Big 5. They felt strongly that retailers should be making it easier for them to make sustainable choices. The evidence from this study is that Retail is failing in this respect. Interest in and demand for local seafood was very high, with consumers equating local with sustainable, even though the evidence to support this assertion is currently lacking. Consumer definitions of “local” and “sustainable” were found to vary from accepted policy and academic understanding, presenting the possibility of adding to consumer confusion when communicating about sustainable seafood; further, “sustainable” possessed negative connotations for these consumers who, in stark contrast to the average UK consumer, were found to score highly for Hedonism. In total, twenty eight distinct variables were identified as influencing unsustainable UK seafood consumer behaviour. Key amongst these were consumer ignorance/apathy regarding sustainability; retail behaviour; and habit – factors that are presented in the Trifold Model of Unsustainable Consumer Behaviour. This model brings much needed clarity to a complex and poorly understood area of consumer behaviour and marks a significant contribution to three areas of academic study: Sustainable Consumption; Consumer Behaviour; and Business Ethics. The Trifold Model is presented for further testing. Recommendations for policy and industry are highlighted as are areas for further research.

The research focusses on the river Lugg – a cross-border catchment and major tributary of the river Wye, the most important Atlantic salmon river in England and Wales. The problem of declining Atlantic salmon populations in the catchment is addressed through investigating recruitment from egg fertilization to the emergent life stage and beyond using multiple field-based and laboratory techniques. The approach adopted is multidisciplinary and addresses the need for holistic approaches to habitat degradation which is increasingly recognised as systemic in nature; often with multiple stressors acting interactively. The initial premise of deleterious fine sediment infiltration into spawning gravels was addressed by a sediment fingerprinting study to ascertain the provenance of infiltrated redd sediment from a range of land-use types. In addition, nine artificial redd sites were constructed and assessed for fine sediment infiltration, intragravel dissolved oxygen levels, intragravel flow velocity and other hyporheic pore water characteristics, in relation to survival to emergence over two field seasons. A study examining the quality of emergent fry was also carried out using fitness tests and individual stress levels. Additionally, a study on long-residence groundwater infiltration into the incubation environment was carried out. The main fine sediment contributor was derived from agricultural sources, particularly during wetter periods. The average contribution of fine sediment from agricultural sources was 60%. Survival ranged from 12% to 70% during the 2008 flood season and from 76% - 93% during the 2009 dry season. Fine sediment mass as a stand-alone index was only weakly correlated with survival but is thought to influence other factors; medium strength correlations of survival with dissolved oxygen, intragravel flow velocity and oxygen supply in particular were observed. Evidence of groundwater-surface water interactions were detected at two of three sites investigated and is proposed as an additional controlling mechanism for embryonic survival in the catchment. Sublethal fitness tests demonstrated variations between cohorts in the 2009 period despite a relatively small range of oxygen concentrations. The results highlight both temporal and spatial variations in spawning habitat quality, which influence not only survival to hatch but also posthatch fitness.

Predators can have both direct and indirect effects on how their prey interact with parasites. This thesis explores these effects using observational and experimental approaches. A behavioural experiment suggested that the direct effects of predators are size- and sex-biased, with small and male guppies, Poecilia reticulata Peters 1859, more prone to Gyrodactylus turnbulli Harris 1986 parasite-induced vulnerability to predation (Chapter 2). Trait-mediated indirect effects of predators also appear important to this host-parasite interaction, as revealed by surveys of natural Trinidadian populations under different predation regimes. First, predator-driven life history evolution predicts an apparent population divergence in parasite tolerance (Chapter 3). Similar divergence in a second trait, social behaviour, may drive sex- and age-biased parasitism: the guppies most liable to shoal have the highest infection probability (Chapter 4). Social behaviour is thus an important driver of parasite transmission, but how parasites affect social interactions remains poorly understood. The second part of this thesis investigates how guppies may use sensory information to mitigate this cost of sociality. Many fishes rely on chemical and visual information and the interaction between sensory modalities to behave appropriately; for example, chemical cues change how guppies respond to visual cues (Chapter 5). In a social context, guppies use both chemical and visual cues to detect infection in conspecifics, but only avoid those in the later stages of infection (Chapter 6). Infection avoidance behaviour is not innate, but likely results from juvenile guppies imprinting on cues of conspecifics, and associating with these cues in adulthood (Chapter 7). This imprinting-mediated avoidance appears to be adaptive: a transmission experiment showed that the onset of avoidance behaviour coincides with the stage of infection at which conspecifics are most infectious (Chapter 8). The sensory ecology of the host and the community in which it lives therefore have important implications for disease dynamics.

L’étude historique des pratiques de pêche à la ligne représente un champ de recherche privilégié pour l’utilisation conjointe du social et de l’environnemental. Dans les années 1960 les pêcheurs à la ligne font preuve d’une véritable conscience écologique. Mais cet état de fait n’est pas du « donné » mais du « construit ». La question centrale consiste donc à se demander si un siècle avant l’apparition de l’écologie politique en France, il y a eu une sensibilisation aux problèmes environnementaux par la pratique d’une activité qui met les citoyens aux prises avec le problème de la qualité de leur environnement proche ? Entre le deuxième tiers du XIXe siècle et les années 1940, la pêche à la ligne a évolué : d’une pratique élitiste à une activité de plus en plus populaire. Dans cette évolution, le rôle des hommes et des femmes et des différentes catégories socio-économiques a varié selon les époques et les régions. Les facteurs, les rythmes et la géographie de la prise de conscience des pêcheurs à la ligne de la nécessité de protéger leur environnement sont différents selon les espaces envisagés. Certaines régions, telles que le nord de la France, ont connu un développement précoce de la pêche à la ligne. Cette multitude de réseaux sociaux a donné naissance à un nouveau rapport des hommes à leur environnement, doublé de sociabilités inédites. / By the 1960s, anglers in France had come to display a real environmental consciousness. The aim of this thesis is to show this consciousness had a long history. Anglers in France, a century before the rise of political ecology, exhibited a growing sensibility to environmental problems that came directely from their experiences of the quality of their surroundings as they fished. In this thesis, I show that between 1829 and 1941, the practise of angling evolved from an elitist to a more working-class form of leisure. I also examine how the respective roles of men and women of different social classes changed over time and acoording to place. In addition, I explore the factors, rhythms and geography of this new environmental awareness. It gave rise to some unexpected developments with, for example, the working classes playing a major role in the movement of the protection of nature in France.

Recent concern about large initial and delayed mortalities resulting from tournament angling for largemouth bass has indicated that it would be desirable to further evaluate the fate of fish that are released after being captured by angling. This study was designed to evaluate sublethal physiological disruptions caused by hooking stress after largemouth bass were played under standardized conditions (0-5 minutes) and to estimate the time needed for recovery of the homeostatic mechanisms (to 72 hours). Blood lactate was used as a measure of metabolic fatigue; plasma osmolality and chloride measurements were used to evaluate osmoregulatory disturbances and gill ion-exchange; and plasma glucose was used as an index of response to generalized non-specific physiological stress. Fatigue of largemouth bass, as indicated by blood lactate values, increased with playing time (0-5 minutes) and was accentuated by an increase in water temperature. Blood lactate levels continued to increase during recovery up to 8 hours but returned to approximate initial values by 24 hours. Plasma chloride values did not change with playing time (0-5 minutes) at water temperatures of 11-13 C and 28-30 C but increased significantly after 1 minute of playing time at 16-20 C indicating an osmoregulatory disturbance. However, at 11-13 C, the plasma chloride values decreased to below values for controls (0 minute) by 72 hours. At 16-20 C, the plasma chloride levels were nearly normal by 24 hours and were at normal levels by 72 hours. Plasma osmolality increased with playing time at all temperatures indicating an immediate osmoregulatory disturbance. The osmolality values returned to initial levels by 72 hours at the cooler water temperature of 11-13 C. However, at the warmer water temperature of 16-20 C, the osmolality values had not returned to the initial values by 72 hours. Plasma glucose did not change at the cooler water temperatures of 11-13 C and 16-20 C but increased significantly at 5 minutes of playing time at 28-30 C reflecting the metabolic response of this species to warmer water temperature. The glucose values remained high throughout the entire 72-hour recovery period. Smaller bass fatigued faster than larger bass at the higher water temperatures (21-26 C and 28-30 C) as indicated by increased blood lactate values. Smaller bass also demonstrated a faster response in plasma glucose levels, probably as a function of fish size and metabolism. Plasma chloride and osmolality in smaller bass showed a response similar to larger bass with an immediate disturbance in osmoregulatory process of fish as playing time increased. Stress imposed on largemouth bass that were caught by angling was demonstrated by changes in the blood chemistry which indicated that sublethal disruption had occurred in the metabolism and osmoregulation of the fish. Handling or holding fish after capture, as in fishing tournaments, probably produces more stress on the fish than the act of being caught and played by anglers. Angling stress is additive to other stresses already imposed on the fish and could result in increased mortality of released fish if the fish cannot adapt readily. Furthermore, released fish may also be more susceptible to diseases or fungal infections and more vulnerable to predation.

Sportfiskarna bedriver sedan år 2016 projektet Skolbäcken vilket de beskriver som ett läro- och upplevelsekoncept som riktar sig till skolklasser. Syftet med studien är att undersöka lärares beskrivningar om hur Sportfiskarnas skolverksamhet Skolbäcken kan bidra till lärares undervisning och till elevers lärande och utveckling. Semistrukturerade intervjuer genomfördes med sex legitimerade grundskollärare. Utifrån det transkriberade materialet kunde sju teman med koppling till forskningsfrågorna urskiljas. I lärarnas beskrivningar framkommer att Skolbäcken ger möjligheter att möta delar av läroplanens övergripande mål såväl som innehåll i flera kursplaner, där lärande i biologiämnet särskilt betonas. I materialet framkommer också att majoriteten av lärarna inte har deltagit i Skolbäcken i samband med ett större arbetsområde. Den viktigaste slutsatsen av studien blir därför att lärare i fortsättningen bör delta i Skolbäcken i samband med ett större arbetsområde för att ge eleverna de förutsättningar som krävs för lärande genom utomhuspedagogik. / Since 2016 the Swedish Anglers Association (SAA) runs a project called Skolbäcken (The school creek) which they describe as a learning and experiential concept for schools. The purpose of this study is to examine teachers’ descriptions of how Skolbäcken can contribute to teachers teaching and to pupils learning and development. Semi-structured interviews were held with six legitimized primary school teachers. From the transcribed material seven themes with connection to the research questions were distinguished. The teachers described that they see opportunities to meet parts of the overall goals of the Swedish curriculum as well as in several syllabuses, where especially biology was emphasized. The majority of the teachers also described that they didn´t participate in Skolbäcken in connection to a theme. The most important conclusion of this study is therefore that teachers should participate in Skolbäcken in connection to a bigger theme in order to give pupils the conditions which are required for learning through outdoor education.

Angling practices subject Largemouth Bass Micropterus salmoides to multiple stressors, causing homeostatic physiological disturbances. The combined effects of ambient and live well temperature on stress responses from exercise have not been thoroughly examined. Large numbers of fish required for stress experiments can be produced by intensive culture, but hatchery fish may differ physiologically from wild fish due to dietary carbohydrates. Therefore, the effects of diet, population, and temperature on stress response and health were examined. Stress responses were similar among fish fed formulated and live diets and liver health improved within 4-6 weeks. Although cortisol responses of hatchery and wild fish differed, secondary stress responses were similar. Fish subjected to simulated angling at temperatures of 17, 25, 33 °C with live well temperature differentials of -4, 0, +4 °C, had the lowest resilience to stress at the warmest temperatures, exhausting energy supplies, coincident with metabolic acidosis and poor ion regulation.

Um die Angelfischerei wirksam zu bewirtschaften, müssen Forscher und Manager das Verhalten von Anglern im Kontext einer Vielzahl von Quellenverstehen. Die Angler selbst sind eine heterogene Gruppe, und ihr Wirkungsspektrum ist sehr divers mit vielen sozialökologischen Berührungspunkten. Ziel meiner Dissertation war es, die Zufriedenheit von Anglern, die eine wichtige Rolle bei der angelfischereilichen Bewirtschaftung spielt, und das Verhalten von Anglern im Zusammenhang mit unterschiedlichen Quellen zu untersuchen. Dafür habe ich zunächst eine Meta-Analyse zur Zufriedenheit von Anglern durchgeführt, um ihre fang- und nicht fangbezogenen Mediatoren zu bestimmen. Die aggregierten Effektgrößen zeigten, dass fangbezogene Komponenten (d. h. Fangrate, Größe des größten gefangenen Fisches) stärker mit der Zufriedenheit der Angler zusammenhängen als nicht fangbezogene Komponenten (z. B. Umweltqualität). Im Anschluss an die Meta-Analyse nutzte ich vorhandene Angler-Tagebuchdaten aus unterschiedlichen sozial-ökologischen Kontexten in Deutschland, um zu untersuchen, wie Fangzufriedenheit und „catch & release“ Verhalten variieren und wie sie durch situative und sozial-ökologische Merkmale moderiert werden können. Diese Untersuchung ergab, dass die Bedeutung von Fangergebnissen für die Zufriedenheit je nach Anglertyp (d.h. Spezialisierung des Anglers), Situation und sozial ökologischem Kontext variiert. In ähnlicher Weise fand ich heraus, dass auch das Fangverhalten je nach den genannten Quellen der Vielfalt erheblich variiert. Insgesamt untermauert meine Doktorarbeit die These, dass Forscher im Bereich der Angelfischerei die Vielfalt der verschiedenen Anglertypen, situativen und sozial-ökologischen Kontexte berücksichtigen müssen. Managemententscheidungen, die diese Quellen der Vielfalt nicht berücksichtigen, können Fischereimanager zu falschen Entscheidungen motivieren oder das Vertrauen in die Forschung zu menschlichen Dimensionen in der Freizeitfischerei schwächen. / To manage recreational fisheries effectively, researchers and managers must understand angler behaviour across multiple sources of diversity. Anglers themselves are a heterogeneous group, and they interact with a diversity of fishing opportunities across a diversity of social-ecological contexts. The objective of my dissertation was to study angler satisfaction, a key consideration in the management of recreational fisheries, and angler behaviour across these sources of diversity. First, I performed a meta-analysis of angler satisfaction to study the catch and non-catch related determinants of recreational angler satisfaction. The aggregated effect sizes revealed that catch-related (i.e., catch rate, size of largest fish caught, fish harvested) components were more strongly related to angling satisfaction than non-catch related components (e.g., environmental quality). Following the meta-analysis, I used existing angler diary data from contrasting social-ecological contexts in Germany to explore how catch satisfaction and catch & release behaviour varied, and how they may be moderated by situational and social-ecological characteristics. This research revealed that the importance of catch outcomes towards catch satisfaction varied across angler types (i.e., angler specialization), situational, and social-ecological contexts. Similarly, I found that harvest behaviours also varied significantly across these sources of diversity. Altogether, my doctoral research supports the assertion that recreational fisheries researchers need to account for diversity across angler types, situational contexts, and social-ecological contexts. Work that fails to account for these sources of diversity will have the potential to mislead fisheries managers or reduce faith in human dimensions research within recreational fisheries.

Based on 10 months’ qualitative fieldwork and the filming of a documentary conducted on the islands of Lampedusa and Fuerteventura, this thesis examines ground-level Europeanisation, concentrating on two well-established Communitarian policy frames -- the Common Fishery Policy (CFP) and the management of the external border of the Schengen space of free movement of people – and two populations of artisanal fishers who were exposed to them. It analyses how governmental logics operated on the ground through individuals’ engagement with Communitarian policies, and it reconstructs the major transformations that the two islands’ fishing industries underwent in the duree of more than fifty years of European integration. While until less than thirty years ago the economy of the Italian island of Lampedusa was centred on bluefish fishing and canning industries, on the Spanish island of Fuerteventura most islanders lived from agriculture for centuries. Following the European integration of Italy and Spain, both islands turned into major tourist destinations and the centres of frequent European migration crises. By focusing on these two territories, this investigation explores how EU governance contributed to transforming the local sociocultural and economic fabric and the islanders’ everyday life. Following the overview of how both policies were played out on the ground, I analyse the effects that the CFP produced on the two islands, and those that the management of the European external border generated in Lampedusa. Giving centrality to the marine element, I push the study of Europeanisation towards the sea and reveal how European policies had reconfigured the islanders’ relation with the seawaters surrounding them. Concurrently, by exploring the ways in which individuals interacted with EU governmentalities, I also unearth the several unintended consequences of Communitarian governance – as conservation policies aiming at recovering overfished fish stocks actually generated the conditions for increasing and uncontrolled overexploitation, while border policies for the securitisation of the European space de facto de-securitized life in Lampedusa.