Search for dissertations about: "naturvårdsbiologi"

Showing result 1 - 5 of 6 swedish dissertations containing the word naturvårdsbiologi.

  1. 1. Genetic Disequilibria and the Interpretation of Population Genetic Structure in Daphnia

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Lars M. Berg; Xavier Vekemans; [2001]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; breeding system; linkage disequilibrium; dispersal; genetic structure; Daphnia pulex; Utvecklingsbiologi; NATURAL SCIENCES Biology Organism biology Developmental biology; NATURVETENSKAP Biologi Organismbiologi Utvecklingsbiologi; naturvårdsbiologi; Conservation Biology;

    Abstract : Understanding the processes that shape the spatial distribution of genetic variation within species is central to the evolutionary study of diversification and demography. Neutral genetic variation reflects past demographic events as well as current demographic characteristics of populations, and the correct interpretation of genetic data requires that the relative impact of these forces can be identified. READ MORE

  2. 2. Conservation biology and genetic structure of fringe populations of the scarce heath butterfly in Sweden

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Anna Cassel; Volker Loeschcke; [2002]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Genetics; fragmentation; genetic structure; mobility; inbreeding; habitat requirements; Lepidoptera; Genetik; MEDICINE Dermatology and venerology; clinical genetics; internal medicine Clinical genetics; MEDICIN Dermatologi och venerologi; klinisk genetik; invärtesmedicin Klinisk genetik; Conservation Biology; naturvårdsbiologi;

    Abstract : During the past century, about 82% of meadows and pastures have been lost in Sweden, with negative consequences for their flora and fauna. An example is the scarce heath butterfly, which is one of the red-listed species threatened by such habitat loss through afforestation. READ MORE

  3. 3. Population genetic analyses in the orchid genus Gymnadenia a conservation genetic perspective

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Susanne Gustafsson; Pia Mutikainen; [2003]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Genetic engineering; Orchidaceae; Gymnadenia; conservation; microsatellites; genetic structure; mating pattern; Genteknik; TECHNOLOGY Bioengineering Genetic engineering including functional genomics; TEKNIKVETENSKAP Bioteknik Genteknik inkl. funktionsgenomik; naturvårdsbiologi; Conservation Biology;

    Abstract : Small populations are facing a particular risk of extinction due to a lack of appropriate genetic diversity and associated negative effects, factors dealt with in the discipline of conservation genetics. Many orchid species exhibit characteristics that make them a perfect study object in the scope of conservation genetics. READ MORE

  4. 4. Effects of Social Organisation on Spatial Genetic Structures in Formica Ants

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Niclas Gyllenstrand; Michael Bruford; [2002]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biology; Formica ants; microsatellites; monogyny; mtDNA; polygyny; social insects; Biologi; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; naturvårdsbiologi; Conservation Biology;

    Abstract : The social organization of social insect colonies can be broadly defined as monogynous, single reproductive female or polygynous, several reproductive females. Monogynous organization is genetically simple while polygynous is more complex and the two social forms differ commonly in mating and dispersal behaviour as well as in colony foundation. READ MORE

  5. 5. Evolutionary history and chloroplast DNA variation in three plant genera: Betula, Corylus and Salix. The impact of post-glacial colonisation and hybridisation

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Anna Palmé; Andrew Lowe; [2003]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biology; chloroplast DNA; phylogeography; hybridization; phylogeny; Salix caprea; Betula pendula; Corylus avellana; Biologi; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; naturvårdsbiologi; Conservation Biology;

    Abstract : The great difference in the level of chloroplast variation and its geographic structure among the three main species studied here demonstrates that forest species do not form a homogeneous group. Hazel shows a genetic structure similar to many other thermophilous species and this structure, in combination with fossil evidence, indicates that the post-glacial colonisation of most of Europe originated in a refugium in western France while the Balkan and Italy were colonised from a south-eastern refugium. READ MORE