Sökning: "colonization"

Visar resultat 1 - 5 av 312 avhandlingar innehållade ordet colonization.

  1. 1. Evolution of the Biodiversity Hotspot of Madagascar from the Eye of Diving Beetles Phylogeny, colonization and speciation

    Detta är en avhandling från Stockholm : Department of Zoology, Stockholm University

    Författare :Rasa Bukontaite; Stockholms universitet.; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Dytiscidae; diving beetles; Biogeography; Phylogeny; Dating; phylogenetic informativeness; colonization; speciation; microendemism; Madagascar; Systematic Zoology; systematisk zoologi;

    Sammanfattning : Dytiscidae, contains numerous endemic and non-endemic species on Madagascar. Their evolutionary history is largely unknown on the island. Herein, I use analyses to infer phylogenetic relationship among groups of diving beetles, with a focus on the subfamily Dytiscinae and endemic species in two other groups of Dytiscidae. LÄS MER

  2. 2. Wave energy conversion and the marine environment Colonization patterns and habitat dynamics

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Olivia Langhamer; Uppsala universitet.; Uppsala universitet.; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; artificial reefs; benthos; biodiversity; biofouling; colonization; environmental impact; fish; shellfish; Mytilus edulis; renewable energy; wave power; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; Zooekologi; Animal Ecology;

    Sammanfattning : A wave energy park has been established on the Swedish west coast outside Lysekil and pioneer work about its interactions with the marine environment has been conducted. So far, little is known about the effects of offshore energy installations on the marine environment, and this thesis assists in minimizing environmental risks as well as in enhancing potential positive effects on the marine environment. LÄS MER

  3. 3. Conifer chemical defense Rugulation of bark beetle colonization and pheromone emission

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Tao Zhao; KTH.; [2011]
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Picea abies; Ips typographus; Ceratocystis polonica; methyl jasmonate; windstorm; stress response; terpenes; phenols; colonization; pheromone emission; FORESTRY; AGRICULTURAL SCIENCES and LANDSCAPE PLANNING Plant production Plant and forest protection; SKOGS- och JORDBRUKSVETENSKAP samt LANDSKAPSPLANERING Växtproduktion Växt- och skogsskydd;

    Sammanfattning : Terpenes and phenols are of importance in conifer defense against insects and pathogens. Knowledge about tree chemical defense is vital for developing practical methods to maintain healthy forests. LÄS MER

  4. 4. Colonization Patterns of Wood-inhabiting Fungi in Boreal Forest

    Detta är en avhandling från Umeå : Ekologi, miljö och geovetenskap

    Författare :Jörgen Olsson; Umeå universitet.; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Wood-inhabiting fungi; colonization; dispersal; restoration fire; saproxylic beetles; conservation; forest management; boreal forest; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology Terrestrial ecology; NATURVETENSKAP Biologi Terrestisk; limnisk och marin ekologi Terrestisk ekologi;

    Sammanfattning : Forest management practices have changed the over-all structure of the Fennoscandian forest landscape resulting in a lack of suitable substrates for many wood-inhabiting species. The objectives of this thesis was to describe the colonization patterns of wood-inhabiting fungi, including the potential role of beetles as dispersal vectors, on different types of dead wood substrate and assess the importance of active measures in the forest landscape in order to restore biodiversity i. LÄS MER

  5. 5. Influence of host and bacterial factors during Neisseria meningitidis colonization

    Detta är en avhandling från Stockholm : Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University

    Författare :Sara Sigurlásdóttir; Stockholms universitet.; [2018]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Neisseria meningitidis; Colonization; Host-bacteria interactions; Lactate; Biofilms; Polynucleotide phosphorylase; molekylär biovetenskap; Molecular Bioscience;

    Sammanfattning : The human-restricted pathogen Neisseria meningitidis is a major cause of bacterial meningitis and sepsis worldwide. Colonization of the mucosal layer in the upper respiratory tract is essential to establish an asymptomatic carrier state and invasive disease. N. LÄS MER