Sökning: "naturvård"

Visar resultat 6 - 10 av 10 avhandlingar innehållade ordet naturvård.

  1. 6. Technological properties of rock aggregates

    Författare :Eva Johansson; Richard Prikryl; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och Berganläggningsteknik;

    Sammanfattning : The commission of technical geology is to apply geological knowledge to the field of constructional engineering, mining technology, environmental protection, architecture etc. The sector of infrastructure is highly dependent on the production of crushed rock materials as the main constituent of e.g. road and railway constructions. LÄS MER

  3. 7. Friluftslivkonflikter i svenska kustlandskap ur ett planerings- och användarperspektiv : Studier av Luleå och Blekinge skärgårdar

    Författare :Rosemarie Ankre; Abdellah Abarkan; Lars Emmelin; Klas Sandell; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; friluftsliv; målkonflikter; kustlanskap; zonering;

    Sammanfattning : Hav och kust har alltid varit viktiga för oss människor. I svenska kustlandskap har boende, infrastruktur och fiskenäring existerat sedan lång tid tillbaka samtidigt som områdena också varit viktiga för nöje och rekreation. LÄS MER

  4. 8. Interactions between climate, natural disturbances, and regeneration in boreal and hemi-boreal forests

    Författare :Igor Drobyshev; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; conservation strategies; Plant ecology; Växtekologi; taiga; seasonal climate; shoot increment; larch; reconstruction; human; canopy gap; fire history; boreal; natural disturbances; dendrochronology;

    Sammanfattning : Natural disturbance is an important driving force of community dynamics in many forest types around the globe. Understanding spatial and temporal properties of disturbance events in the present and in the past is important in formulating the nature conservation strategies as well as for the modeling of climate and human impacts on forest vegetation. LÄS MER

  5. 9. The impact of past land-use change on floristic diversity in southern Sweden : a quantitative approach based on high-resolution pollen data

    Författare :Daniel Fredh; Kvartärgeologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis explores the relationship between land-use and floristic diversity over the last three millennia in the uplands of southern Sweden. A quantitative approach based on high-resolution pollen data was applied, using the Landscape Reconstruction Algorithm (LRA), historical maps/aerial photographs, palynological richness and new ways to estimate past evenness at regional and local spatial scales, which enable estimates of the rate and degree of change in land-use and floristic diversity. LÄS MER

  7. 10. Intraspecific variation in Rhinanthus angustifolius. Local adaptation, phenotypic plasticity and geographical structure

    Författare :Anneli Jonstrup; Biodiversitet; []
    Nyckelord :Ecotype; Local adaptation; Phenotypic plasticity; Parallel evolution; Geographical structure; Hemiparasite; Rhinanthus;

    Sammanfattning : Plant species often adapt to local environmental conditions, which can result in the formation of genetically and phenotypically distinct ecotypes. Ecotypes can evolve rapidly, and may be a first step in the process of ecological speciation. LÄS MER