Sökning: "generalist"

Visar resultat 16 - 20 av 71 avhandlingar innehållade ordet generalist.

  1. 16. Anställningsbilder och rekryteringsbeslut

    Författare :Pernilla Bolander; Handelshögskolan i Stockholm; []
    Nyckelord :;

    Sammanfattning : Denna avhandling handlar om hur rekryteringspro­cesser går till. Den handlar särskilt om rekryteringsprocesser där bedömning och beslutsfattande sker i grupper som består av rekryte­rare, linjechefer och blivande kollegor. LÄS MER

  3. 17. Studies of plant interactions with other organisms to understand Bacillus mediated stress management

    Författare :Anna Johansson; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : The naturally evolved plant defense system is not always effective, due to adaptations among the attackers. Crop protective chemicals have many negative effects on the environment. Ecosystem services, like beneficial microorganisms, are of great interest for plant stress management in sustainable crop production. LÄS MER

  4. 18. Life History and Tolerance and Resistance against Herbivores in Natural Populations of Arabidopsis thaliana

    Författare :Reiko Akiyama; Jon Ågren; Arjen Biere; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Arabidopsis thaliana; life history evolution; flowering time; germination; phenology; plant-herbivore interactions; natural selection; tolerance to leaf damage; resistance to herbivory; Plutella xylostella; Mamestra brassicae; Biology with specialization in Ecological Botany; Biologi med inriktning mot ekologisk botanik;

    Sammanfattning : In this thesis, I combined observational studies with field and greenhouse experiments to examine selection on life history traits and variation in tolerance and resistance against herbivores in natural populations of the annual herb Arabidopsis thaliana in its native range. I investigated (1) phenotypic selection on flowering time and plant size, (2) the effects of timing of germination on plant fitness, (3) the effect of leaf damage on seed production, and (4) correlations between resistance against a specialist and a generalist insect herbivore. LÄS MER

  5. 19. Studies on glycosphingolipids in infection, immunity and differentiation

    Författare :John Benktander; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Glycosphingolipids; Mass spectrometry; Helicobacter pylori BabA; Vibrio cholerae; Human embryonic stem cells; Glycosyltransferase; PX2;

    Sammanfattning : Cell surface glycoconjugates play a role in many biological processes such as responses to microbial infections, cell-cell interactions, differentiation, and inflammatory responses. The present work is focused on structural characterization of glycosphingolipids with potential roles in adhesion of Helicobacter pylori and Vibrio cholerae, differentiation of human pluripotent stem cells, and as blood group determinants. LÄS MER

  7. 20. The influence of trophic polymorphisms on habitat coupling in aquatic food webs

    Författare :Maria H. K. Marklund; Peter Eklöv; R. Svanbäck; Pierre Magnan; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology with specialization in Limnology; Biologi med inriktning mot limnologi;

    Sammanfattning : Trophic cascades, together with other indirect interactions are important aspects in shaping the composition and abundance of species in the food web. Theoretically, movement of energy between systems, and coupling between habitats by mobile predators have been suggested as being important for food web stability and evenness. LÄS MER