Search for dissertations about: "multiple stressor"

Showing result 1 - 5 of 6 swedish dissertations containing the words multiple stressor.

  1. 1. Psychotropic Pharmaceuticals in Aquatic Systems: An Ecological Perspective

    University dissertation from Department of Biology, Lund University

    Author : Melanie Hedgespeth; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ecotoxicology; aquatic; trophic level; pharmaceutical; SSRI; beta-blocker; sertraline; fluoxetine; propranolol; fish; daphnia; snail; predator; prey; behavior; life history; multiple stressor;

    Abstract : Psychotropic pharmaceuticals have been shown to exert a variety of sublethal effects on non-target organisms, even at low concentrations found in the environment (ng/L to µg/L); hence, the aim of my research has been to determine the individual-level effects of psychotropic pharmaceuticals (the selective serotonin reuptake inhibitors sertraline and fluoxetine, and the β-blocker propranolol) on behavioral and life history traits in freshwater organisms. Further, this research was directed towards assessing the potential large-scale impacts of these effects on population growth and predator-prey interactions (with community-level implications) via the application of traditional, ecological concepts and models. READ MORE

  2. 2. Stress in chickens Effects of domestication and early experience on behaviour and welfare

    University dissertation from Department of Biology, Lund University

    Author : Maria Ericsson; Per Jensen; Linda Keeling; Bjarne Braastad; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The domestication is the process where animals have adapted to human conditions. A prerequisite for domestication is tame behaviour towards humans and subsequently, selection for other desirable traits took place which led to changes in several behavioural and physiological parameters. READ MORE

  3. 3. Coral reefs in a human-dominated environment : implications of altered disturbance regimes and reduced resilience

    University dissertation from Stockholm : Department of Systems Ecology, Stockholm University

    Author : Magnus Nyström; Terry Done; [2001]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Korallrev; Ekosystem i vatten; Marine Ecotoxicology; marin ekotoxikologi;

    Abstract : Coral reefs are facing an "Anthropocene " era where humans have advanced from a minor species with limited influence on coral reefs to a major source of disturbance. Disturbance arriving from human influences may not only interact with each other, but also with natural disturbance regimes, leading to synergistic effects. READ MORE

  4. 4. Close to the edge discursive, gendered and embodied stress in modern youth

    University dissertation from Umeå : Umeå universitet

    Author : Maria Wiklund; Ann Öhman; Eva-Britt Malmgren-Olsson; Carita Bengs; Erik Bergström; Charli Eriksson; [2010]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Sweden; adolescent; youth; young women; stress; distress; health; psychosomatic; subjective health; body; embodiment; lived experience; gender; modernity; discourse; qualitative method; content analysis; interviews; school survey; questionnaire; epidemiology; Sverige; ungdomar; tonår; unga vuxna; tonårsflickor; stress; ångest; subjektiv hälsa; kropp; förkroppsligande; levd erfarenhet; genus; modernitet; kvalitativ metod; kvalitativ innehållsanalys; intervjuer; skolenkät; frågeformulär; epidemiologi; MEDICINE Social medicine Public health medicine research areas Public health science; MEDICIN Socialmedicin Folkhälsomedicinska forskningsområden Folkhälsovetenskap; folkhälsa; Public health;

    Abstract : Background Adolescent subjective health and mental problems have become a public health concern not only in Sweden but worldwide. The overall aim of this thesis is to deepen and widen the understanding of young peoples’ subjective health, psychosomatic and stress-related problems. READ MORE

  5. 5. Psychosocial factors and preterm birth : national register-based studies

    University dissertation from Stockholm : Karolinska Institutet, Dept of Medicine, Solna

    Author : Can Liu; Karolinska Institutet.; Karolinska Institutet.; [2017]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : Every year, approximately fifteen million infants are born preterm, defined as prior to 37 gestational weeks. Preterm birth is the number one cause of neonatal mortality, which kills more than one million babies every year globally. However, its aetiology remains largely unclear, hindering effective preventions. READ MORE