Search for dissertations about: "sallow"

Found 2 swedish dissertations containing the word sallow.

  2. 1. Deciduous tree occurrence and large herbivore browsing in multiscale perspectives

    Author : Gunilla Cassing; Larry Greenberg; Christina Skarpe; Karlstads universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; aspen; rowan; sallow; GIS; browsing; landscape; forest management; Biology; Biologi;

    Abstract : Aspen ( Populus tremula), rowan (Sorbus auquparia) and sallow (Salix caprea) are deciduous tree species of low economic value for forestry and contribute to biodiversity of boreal forests. The species are rare in managed forest landscapes, and severely browsed by moose. READ MORE

  4. 2. Evolutionary history and chloroplast DNA variation in three plant genera: Betula, Corylus and Salix. : The impact of post-glacial colonisation and hybridisation

    Author : Anna Palmé; Andrew Lowe; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biology; chloroplast DNA; phylogeography; hybridization; phylogeny; Salix caprea; Betula pendula; Corylus avellana; Biologi; Biology; Biologi; naturvårdsbiologi; Conservation Biology;

    Abstract : The great difference in the level of chloroplast variation and its geographic structure among the three main species studied here demonstrates that forest species do not form a homogeneous group. Hazel shows a genetic structure similar to many other thermophilous species and this structure, in combination with fossil evidence, indicates that the post-glacial colonisation of most of Europe originated in a refugium in western France while the Balkan and Italy were colonised from a south-eastern refugium. READ MORE