Search for dissertations about: "Microevolution"

Found 3 swedish dissertations containing the word Microevolution.

  1. 1. Microevolution in pygmy grasshoppers

    Author : Jon Tinnert; Anders Forsman; Anssi Laurila; Linnéuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Evolutionary Biology; Evolutionsbiologi;

    Abstract : Knowledge of how spatiotemporal environmental variation impacts ecological and evolutionary processes and contributes to genetic and phenotypic diversity of natural populations is key to understanding and protecting biological diversity. In this thesis I used pygmy grasshoppers to study how environmental conditions, population dynamics, dispersal and admixture may influence genetic structure and diversity, and to evaluate how functionally important variation may affect the ability of populations to cope with novel and changing habitats. READ MORE

  2. 2. Raising Voices : Singing repertoire and practices in Swedish schools

    Author : David Johnson; Lärare (Musikhögskolan); []
    Keywords : HUMANIORA; HUMANITIES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Singing; Repertoire; Children; Schools; Survey; Ethnomusicology; Cantometrics; Microevolution;

    Abstract : This doctoral study aims to (i) investigate current song repertoire and singing practices in Swedish elementary school music education and (ii) to critically assess what factors may be seen to affect singing practices and repertoire choice. It looks to map out how much young students are singing in the general music classroom, what they sing, and how they sing, and to discuss possible implications for pedagogical practice from an ethnomusicological perspective. READ MORE

  3. 3. The tempo and mode of evolution : a neontological reappraisal

    Author : Melanie Monroe; Folmer Bokma; Pär Ingvarsson; Mikael Fortelius; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; birds; extinction; macroevolution; mammals; microevolution; punctuated equilibrium; speciation;

    Abstract : The theory of “punctuated equilibrium” suggests that species evolve rapidly during or immediately upon speciation, “punctuating” long periods of little or no morphological evolution. Here I confirm that body size differences within clades of birds and mammals are best explained using a model of punctuated evolution. READ MORE