Sökning: "species distribution modelling"

Visar resultat 16 - 20 av 57 avhandlingar innehållade orden species distribution modelling.

  1. 16. Sphagnum limits : Physiology, morphology and climate

    Författare :Charles Campbell; Håkan Rydin; Gustaf Granath; Sebastian Sundberg; Bengt-Gunnar Jonsson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Sphagnum; ecology; bryophyte; winter; species distribution models; low temperature; plant structure; water economy; Biology with specialization in Ecological Botany; Biologi med inriktning mot ekologisk botanik;

    Sammanfattning : Sphagnum is the most important plant genus in terms of terrestrial carbon cycling. It and the habitats it creates store an equivalent of ~68% of the CO2 in the atmosphere. The genus has little dispersal limitation and the mire habitats are functionally similar at global scales. LÄS MER

  3. 17. Physiologically based modelling of nanoparticle biodistribution and biokinetics

    Författare :Ulrika Carlander; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : To predict the toxicity of nanoparticles (1-100 nm), it is crucial to understand their biokinetics i.e. how they are taken up, distributed, dissolved and removed from the body. Such information can be gained from biodistribution studies in animals. LÄS MER

  4. 18. Plant species diversity patterns in a Swedish rural landscape : effects of the past and consequences for the future

    Författare :Sara A. O. Cousins; Roy Haines-Young; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Plant species richness in rural landscapes is threatened as grassland management ceases or changes, and as many remaining semi-natural grasslands are becoming increasingly fragmented. This thesis is a study of plant species diversity in a rural landscape in south-eastern Sweden, and its relationship to management history and landscape pattern. LÄS MER

  5. 19. Modelling of Kraft Cooking Kinetics Using Near Infrared Spectroscopy

    Författare :Niclas Andersson; []
    Nyckelord :;

    Sammanfattning : A kinetic model describing the kraft cooking degradation reactions for softwood lignin and carbohydrates was developed in this thesis. The model satisfactorily predicted the data for modified as well as conventional cooking schemes, something which eluded earlier published models. LÄS MER

  7. 20. The CRACKER Program and Modelling of Äspö Groundwater Chemistry

    Författare :Allan Emrén; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : A sufficiently accurate understanding of groundwater chemistry and interactions between minerals and groundwater is of fundamental importance for performance assessment in connection with a repository for nuclear waste. Here, a model is described, which has been able to give agreement between observed and modelled values for more than ten element concentrations (including pH and pE values). LÄS MER