Search for dissertations about: "biologi"

Showing result 1 - 5 of 5539 swedish dissertations containing the word biologi.

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

    Author : Gunilla Cassing; Larry Greenberg; Christina Skarpe; Karlstads universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; 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. Chicken domestication : Effects of tameness on brain gene expression and DNA methylation

    Author : Johan Bélteky; Per Jensen; Anna Kukekova; Linköpings universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; NATURAL SCIENCES; MEDICAL AND HEALTH SCIENCES;

    Abstract : Domestication greatly increases phenotypic variation in a short time span, with selection for a single phenotype and a plethora of associated phenotypic changes as an outcome of the process. The domestication process influences the underlying genomic architecture of a species, and the success and speed of the process is likely influenced by it. READ MORE

  5. 3. Domestication and early experiences in chickens : Behavior, stress and gene expression

    Author : Pia Katrine Løtvedt; Per Jensen; Jordi Altimiras; Emma Brunberg; Linköpings universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : A number of animal species have undergone domestication, the process of becoming adapted to living in captivity and in proximity to humans. Common for these species is that they have all developed certain traits, including changes to coat color, body size and level of fearfulness. This has been termed the domestic phenotype. READ MORE

  6. 4. Hitting the mark : studies of alterations in behaviour and fertility in ethinyl estradiol-exposed zebrafish and search related biomarkers

    Author : Nasim Reyhanian Caspillo; Inger Porsch Hällström; Per-Erik Olsson; Håkan Olsén; Leif Norrgren; Örebro universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Endocrine disrupting compounds; 17α-ethinylestradiol; fertility; anxiety; behaviour; zebrafish; biomarkers; stress; Biology; Biologi;

    Abstract : In this thesis, we have analysed the effects of EE2 on non-reproductive behaviours and fertility. We have showed that two doses of EE2 in male adult short-term exposures evokes opposite behaviours in the novel tank test. READ MORE

  7. 5. Socioscientific argumentation : Aspects of content and structure

    Author : Nina Christenson; Shu-Nu Chang Rundgren; Niklas Gericke; Gabriel Bladh; Jim Ryder; Karlstads universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; NATURVETENSKAP; SAMHÄLLSVETENSKAP; NATURAL SCIENCES; SOCIAL SCIENCES; Socioscientific argumentation; socioscientific issues; argumentation; Biology; Biologi;

    Abstract : Socioscientific argumentation has shown to be a feasible educational framework for promoting citizenship and for cultivating scientific literacy. However, there are several aspects of this educational framework that have been shown to be problematic. READ MORE