Search for dissertations about: "outpost population"

Found 3 swedish dissertations containing the words outpost population.

  2. 1. Ecology and conservation of the moth Dysauxes ancilla

    Author : Per-Eric Betzholtz; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Animal ecology; Djurekologi; marc-recapture; population viability; fluctuating asymmetry; genetic status; larval feeding; movements; endangered species; conservation; outpost population; Lepidoptera; Dysauxes ancilla;

    Abstract : The ecology of the moth Dysauxes ancilla was studied in the only Swedish breeding area at Beijershamn, situated on the Baltic island of Öland. The population is a northern outpost, separated from the species´ continous distribution area in middle- and southeast Europe. READ MORE

  4. 2. The Holocene Spread of Spruce in Scandinavia

    Author : Thomas Giesecke; Keith Bennett; Richard Bradshaw; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Quaternary geology; Picea abies; pollen analyses; tree migration; population dynamics; Kvartärgeologi; Quaternary geology; Kvartärgeologi;

    Abstract : The Holocene spread of Picea abies in Scandinavia provides an excellent opportunity for detailed study of the dynamics of tree spread and population expansion. Early- and mid-Holocene macrofossil evidence for the presence of Picea abies in Scandinavia has questioned traditional interpretations of the timing and direction of its spread. READ MORE

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

    Author : Leif Björkman; Kvartärgeologi; []
    Keywords : 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;

    Abstract : 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. READ MORE