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Visar resultat 1 - 5 av 338 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Human Abuses of Coral Reefs- Adaptive Responses and Regime Transitions

    Författare :Ingrid Nordemar; Nils Kautsky; Michael Tedengren; Hans Kautsky; Alina Szmant; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Coral Reefs; Disturbance; Stress; Adaptive responses; Macroalgae; Ecosystem regimes; Resilience; Competition; Traits; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

    Sammanfattning : During the last few decades, coral reefs have become a disappearing feature of tropical marine environments, and those reefs that do remain are severely threatened. It is understood that humans have greately altered the environment under which these ecosystems previously have thrived and evoloved. LÄS MER

  2. 2. Adaptive responses during giardia-host interactions

    Författare :Daniel Palm; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Giardia lamblia is a major cause of water-borne enteric disease. The parasite is a noninvasive, flagellated protozoan that inhabits the upper part of the small intestine of its vertebrate hosts. LÄS MER

  3. 3. Modelling the Structural Dynamics of Business Networks : Two Agent-based Models of Supply Networks

    Författare :Sara Shahin Moghadam; Frans Prenkert; Franziska Klügl; Magnus Hansson; Davide Secchi; Örebro universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Business networks; dynamics; Agent-based modelling; structural change; responses; interactions; complex adaptive systems;

    Sammanfattning : This thesis aims at describing and analysing the structural changes of business networks that emerge as a result of change triggers. Despite previous studies, our understanding of the evolution of the network structure and its influencing factors is still limited. LÄS MER

  4. 4. Adaptive and non-adaptive responses to toxin-producing cyanobacteria in water fleas

    Författare :Alexander Hegg; Evolutionär ekologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Organisms regularly encounter stressful conditions that negatively affects their fitness. One way to minimize these negative effects is to use cues from the environment in order to develop an appropriate phenotype. Many populations of water fleas (Daphnia spp. LÄS MER

  5. 5. Innate and adaptive immune responses in pulmonary sarcoidosis

    Författare :Maria Wikén; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Sarcoidosis is an inflammatory disease characterized by formation of granulomas in various organs and tissues. Although it is a systemic disorder, the lungs are commonly affected, and an infiltration of T cells, in particular CD4pos T helper 1 (Th1) cells, is seen in the lower airways. LÄS MER