Search for dissertations about: "niches"

Showing result 1 - 5 of 78 swedish dissertations containing the word niches.

  1. 1. Peer interaction in preschool: Necessary, but not sufficient The influence of social interaction on the link between behavior difficulties and engagement among children with and without need of special support

    University dissertation from Jönköping : Jönköping University, School of Education and Communication

    Author : Madeleine Sjöman; Högskolan i Jönköping.; [2018]
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; preschool; engagement; hyperactive behavior; teacher responsiveness; peer-to-child interaction; Bioecological Systems Theory; niches; proximal processes; environmental factors; cross-sectional; transactional processes; longitudinal design;

    Abstract : The overall aim of this thesis is to enhance knowledge regarding engagement among children with and without need of special support due to behavior difficulties. The influence of social interaction as well as the provision of special support in Swedish preschool were investigated. READ MORE

  2. 2. The Niches of Bacterial Populations in Productive Waters Examples from Coastal Waters and Four Eutrophic Lakes

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Alexander Eiler; Uppsala universitet.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Ecology; diversity; 16S rRNA; phytoplankton; bloom; pathogen; carbon cycle; Ekologi;

    Abstract : Recent research in microbial ecology has focused on how aquatic bacterial communities are assembled. Only a few of these studies follow a “Gleasonian” approach where the roles of single bacterial populations are in focus. READ MORE

  3. 3. Intervertebral disc regeneration. Studies on stem cell niches and cell transplantation

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Helena Barreto Henriksson; Göteborgs universitet.; Gothenburg University.; [2010]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; intervertebral disc stem cells degenerative disc cell transplantation stem cell niches disc degeneration mesenchymal stem cells cell therapy;

    Abstract : Abstract Intervertebral disc regeneration Studies on stem cell niches and cell transplantation Helena Barreto Henriksson Gothenburg 2010 Low back pain is a common condition in the Western world and disc degeneration (DD) is considered a major cause. DD is characterized by dysfunctional cells and decreased matrix production. READ MORE

  4. 4. Ecological and evolutionary assembly processes and metacommunity structure

    University dissertation from Department of Biology, Lund University

    Author : Mikael Pontarp; Lund University.; Lunds universitet.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Community; metacommunity; phylogenetic signal; ecology; evolution; assembly process; marine bacteria; habitat filtering; competition; mathematical modeling; simulation; eco-evolutionary;

    Abstract : This thesis aims to elucidate the link between abiotic and biotic effects and biogeographical contingencies, eco-evolutionary assembly processes, and community structure in a spatially explicit metacommunity framework. To this end, we used structure analysis of naturally sampled and experimentally manipulated marine bacterial communities and mathematical eco-evolutionary modeling and simulations of metacommunity assembly. READ MORE

  5. 5. Distribution and persistence of epiphyte metapopulations in dynamic landscapes

    University dissertation from ; Institutionen för ekologi, Sveriges lantbruksuniversitet

    Author : Victor Johansson; Sveriges lantbruksuniversitet.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Habitat loss is a major cause of species extinction. Old trees have declined, and this continues because of poor management. Examples are development of secondary woodland in semi-open grasslands, and lack of natural tree regeneration. We therefore can expect that species associated with old tree are declining. READ MORE