Sökning: "introductions"

Visar resultat 1 - 5 av 62 avhandlingar innehållade ordet introductions.

  1. 1. Biotic resistance in freshwater fish communities

    Författare :Anna Henriksson; Göran Englund; David Wardle A.; Jun Yu; Sebastian Diehl; Donald Jackson; David A. Wardle; David Wardle; Umeå universitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; biotic resistance; freshwater fish; introductions; invasions; invasion success; invasibility; invasiveness; species richness; saturation; species identity; weighted species richness;

    Sammanfattning : Invasions of non-native species cause problems in ecosystems worldwide, and despite the extensive effort that has been put into research about invasions, we still lack a good understanding for why some, but not other, communities resist these invasions. In this doctoral thesis I test hypotheses on biotic resistance using a large dataset of more than 1000 both failed and successful introductions of freshwater fish into Swedish lakes. LÄS MER

  2. 2. Expositiones sequentiarum : Medieval Sequence Commentaries and Prologues. Editions with Introductions

    Författare :Erika Kihlman; Gunilla Iversen; Susan Boynton; Stockholms universitet; []
    Nyckelord :HUMANITIES; HUMANIORA; HUMANIORA; HUMANITIES; Medieval Latin; sequence commentaries; prologue; Alan of Lille; Pseudo-Dionysius; John Scottus Eriugena; Gregory the Great; the ‘Aristotelian tradition’; angels; angelical hierarchy; glosses; etymology; Ad celebres rex; Latin language; Latin;

    Sammanfattning : The sequence commentary emerged as a new branch of medieval commentary literature in the twelfth century. The sequence itself, sung in the Roman Mass, was a hugely influential genre—several thousands of sequence texts are known today—but the fact that the Middle Ages also produced commentaries on this liturgical poetry has been hitherto practically unknown and very few commentary texts have been edited. LÄS MER

  3. 3. Essays on Corporate Acquisitions and Stock Market Introductions

    Författare :Martin Holmen; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

    Sammanfattning : .... LÄS MER

  4. 4. Nesting and migration in the introduced Canada goose in Sweden

    Författare :Göran Sjöberg; Catherine M. Lessells; Umeå universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Species introductions; DNA fingerprinting; natal dispersal; breeding dispersal; bird migration; wintering areas; clutch size; laying date; body reserves; nest defence; waterfowl; Canada goose; Anatidae; Branta canadensis;

    Sammanfattning : The aim of the thesis was to document patterns in breeding and migration in Swedish Canada geese Branta canadensis, to explain these against the genetic and historical background of the population, and to test predictions of hypotheses pertaining to parental investment.The Canada goose population in Sweden was founded by the introduction of a few individuals in the 1930's. LÄS MER

  5. 5. Studies in field theory : supersymmetry and torsion potentials

    Författare :Johan Grundberg; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : This report contains introductions to and summaries of the papers which constitute my thesis. These papers treat four different topics: The first of these is the superspace treatment of the linear multiplet in six space-time dimensions, in particular the solution of the constraint for this multiplet. LÄS MER