Syfte och frågeställningar: Syftet med studien var att utifrån ett salutogent perspektivundersöka professioners uppfattningar om och yrkeserfarenheter av att upptäcka tidigasignaler på stress och hur dessa kan hanteras. De frågeställningar som besvaras är; I) Vilkauttryck tar sig dagens psykiska ohälsa i arbetslivet? II) Hur kan individen upptäcka tidiga varningssignaler på stress? III) Vilka strategier kan individen tillämpa för att främja sin förmåga att hantera stress? IV) Vad anses vara hälsofrämjande på de olika systemnivåerna?Metod: Studien utgår ifrån en kvalitativ forskningsmetod med inspiration av den fenomenografiska ansatsen. Metoden för insamlad data bestod av semistrukturerade intervjuer. Resultat: Resultatet har presenterats i fyra huvudkategorier - Gränslöst arbete, Tidiga varningssignaler på stress, Hantering av stress, Hälsofrämjande arbetssätt, tillsammans med åtta subkategorier - Ett individualistiskt samhälle, Krav och prestationer, Bakomliggande orsaker, En mindre hållbar situation, Individens egna val, Individ- och gruppnivå, Organisationsnivå, Samhällsnivå. Konklusion: Symptom som trötthet, oro och sömnsvårigheter är varningssignaler på stress. Att arbeta med hälsofrämjande insatser på ett tidigt studium är en framgångsfaktor som respondenterna talar om. Det är viktigt att vara lyhörd för tidiga symptom och bakomliggande orsaker, det vill säga att ta reda på "vad det är som prasslar". / Purpose and issues: The purpose of the study was to examine, from a salutogenic perspective, professionals' perceptions and work experiences of detecting early signals on stress in working life and how they can be managed. The questions to be answered are: I)What are the expressions of mental illness in working life today? II) How can the individual discover early warning signals on stress? III) What strategies can the individual apply to promote his/her ability to cope with stress? IV) What is considered to be a health promotionfor the different system levels? Methods: The study design is qualitative inspired by the phenomenographic approach. Semistructured interviews were used for collecting data. Results: Four main categories emerged - Borderless work, Early warning signals of stress, Managing stress, Working in a health promotion manner. Eight subcategories were found –An individualistic society, Demands and achievements, Underlying causes, An unsustainable situation, The individual's own choices, Individual- and group level, Organizational level and environmental- and societal level. Conclusion: Symptoms such as fatigue, anxious and insomnia are warning signals of stress. Working in a health promotion manner in early stages is a success factor mentioned by the respondents. It is important to be responsive to early symptoms and underlying causes, that is, to examine "what is the rustle".

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This thesis focuses on various factors affecting effectiveness of aposematic signals against avian predators. Adult, wild-caught as well as hand-reared juvenile great tits (Parus major) were used as predators in the experiments. The thesis consists of the following four studies. In the first study, we compared the reactions of great tits from two geographically distant populations toward aposematic firebugs (Pyrrhocoris apterus) and their non-aposematic artificially made colour variant. The birds from the Bohemian population mostly avoided aposematic firebugs and attacked non-aposematic variant. Finnish birds, which lacked experience with firebugs from their natural environment, were less hesitant to attack both firebug colour forms. Although the Bohemian birds avoided the aposematic prey variant, they were not more neophobic than Finnish birds. We conclude that the geographic differences in reactions of the birds to aposematic prey can be explained by a different population-specific experience of the birds with local aposematic prey communities. In the second study, we compared effectiveness of two chemical defence strategies in leaf beetle larvae (Chrysomela lapponica) against great tits. The birds avoided larvae devoid of external secretions after the first attack, which indicates the presence...