Sökning: "Salix viminalis"

Visar resultat 1 - 5 av 9 uppsatser innehållade orden Salix viminalis.

  1. 1. Nutrient driven oviposition and food preference in terrestrial herbivorous insects - a choice experiment

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Linnéa Waara; [2016]
    Nyckelord :Herbivore-plant interactions; offspring survival; Salix viminalis; Phratora vitellinae; Lochmaea caprea; C:N ratio; CO2 emissions;

    Sammanfattning : The presence of competitors and predators as well as plant quality affect which plants an insect feed from. These factors affect food choice through the entire insect life cycle, and is especially important when it comes to nurturing larvae. LÄS MER

  3. 2. Genetic assessment of plant material for studies of the genetic causes to female biased sex ratios in Salix viminalis L.

    Kandidat-uppsats, SLU/Department of Plant Biology (from 140101)

    Författare :Amela Kujović; [2016]
    Nyckelord :sex ratio; willows; dioecy; white seeds; homozygosity; inbreeding;

    Sammanfattning : Biased sex ratios are highly common among dioecious plants. Salix viminalis is a dioecious tree or a woody shrub that has an overall female biased sex ratio. LÄS MER

  4. 3. Fundamental and realized niches of two chrysomelid competitors on two Salix host species

    Master-uppsats, SLU/Dept. of Ecology

    Författare :Sharmin Kawshar; [2015]
    Nyckelord :fundamental niche; realized niche; Galerucella lineola; Phratora vulgatissima; Salix viminalis; Salix dasyclados; interspecific competition; egg-laying preference; coexistence;

    Sammanfattning : The fundamental and realized niches of phytophagous insects constitute an important topic in contemporary ecology. Hutchinson (1965) formulized the concept of the fundamental and realized niche with regards to species responses to interspecific competition; and for the herbivore insects’ community the consequence of interspecific competition is a debatable and questionable from the very beginning to till now. LÄS MER

  5. 4. Effects of drought and nutrients on growth, morphology and wood anatomy of two genotypes of Salix

    Master-uppsats, SLU/Dept. of Crop Production Ecology

    Författare :Amanda Jansson; [2015]
    Nyckelord :Salix vinimalis; Salix schwerinii; biomass production; vessel; water; nutrients;

    Sammanfattning : Due to a growing global population and an increasing welfare in combination with limited resources of fossil fuels and environmental problems may bioenergy be one of the alternatives for a more sustainable energy production. Among others, Salix is used as biological energy source. LÄS MER

  7. 5. Foliar nutrition: targeted fertilization to test herbivore preference

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Johan Penner; [2014]
    Nyckelord :Foliar nutrition; Salix viminalis; Phratora vulgatissima; Fertilization; Feeding trial;

    Sammanfattning : Abstract   The aim of this study was to increase knowledge of how plants as a whole respond to targeted fertilization and to refine the method of foliar nutrition fertilization. The experiment also aimed to test how herbivores respond when presented with a choice between fertilized and unfertilized Salix leaves in a feeding trial experiment. LÄS MER