Sökning: "Leif Björkman"

Hittade 3 avhandlingar innehållade orden Leif Björkman.

  1. 1. The Late Holocene history of beech Fagus sylvatica and Norway spruce Picea abies at stand-scale in southern Sweden

    Författare :Leif Björkman; Kvartärgeologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; physical geography; Geology; south Sweden; Late Holocene; succession; disturbance; forest history; forest continuity; population dynamics; immigration; palaeoecology; pollen analysis; Fagus sylvatica; Picea abies; Geologi; fysisk geografi; Palaeobotany; phylogeny; palynology; Paleobotanik; fylogeni; palynologi;

    Sammanfattning : High resolution pollen analysis was carried out on five peat profiles from small forest hollows at four sites in southern Sweden. The general aim was to investigate the establishment of Fagus sylvatica and Picea abies at stand-scale. LÄS MER

  3. 2. Sverige inför Operation Barbarossa : svensk neutralitetspolitik 1940-1941

    Författare :Leif Björkman; Stockholms universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Neutralitetspolitik-- historia -- Sverige -- 1939-1945 andra världskriget ;

    Sammanfattning : .... LÄS MER

  4. 3. Palaeoenvironment in North-Western Romania during the last 15 000 years

    Författare :Angelica Feurdean; Barbara Wohlfarth; Ann-Marie Robertsson; Leif Björkman; Iustinian Petrescu; Katherine J Willis; Stockholms universitet; []
    Nyckelord :Northwest Romania; Gutaiului Mountains; pollenstratigraphy; macrofossil remains; Lateglacial; Holocene; tree refugia; tree dynamics; past climate; human influence;

    Sammanfattning : The objectives of this thesis are to establish a chronological framework for environmental changes during the last 15,000 years in northwest Romania, to reconstruct the vegetation development, and to evaluate the underlying processes for forest dynamics. Furthermore, an overview of earlier and ongoing pollenstratigraphic work in Romania is provided. LÄS MER