Sökning: "Pearl"

Visar resultat 6 - 10 av 21 avhandlingar innehållade ordet Pearl.

  1. 6. Genetic Variation and Relatedness of Freshwater Pearl Mussel Margaritifera margaritifera L. populations

    Författare :Amra Hadzihalilovic-Numanovic; Larry Greenberg; Nils Ryman; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Margaritifera margaritifera; genetic variation; age structure; genetic distance; Biology; Biologi; Biology; Biologi;

    Sammanfattning : The two papers presented in this thesis focus on population genetic study on freshwater pearl mussel populations in Sweden, using RAPD method. In paper I, I examine genetic variation within and between 5 populations in a single drainage area in south western Sweden. LÄS MER

  3. 7. Application of satellite data for investigation of water quality in coastal areas

    Författare :Chuqun Chen; Avdelningen för Teknisk vattenresurslära; []
    Nyckelord :Atmospheric correction; Pearl River estuary; Daya Bay.; Numerical modeling; Chlorophyll-a; Water quality; Ocean color remote sensing; Gelbstoff;

    Sammanfattning : The population growth in China together with the rapid industrialization and urbanization have increased the utilization of natural resources, leading to more waste being released to the environment. Thus, the environmental conditions have degraded in many regions to a point where environmentally related problems have become the main limiting factors for economical development and social progress. LÄS MER

  4. 8. Habitat compensation in nature-like fishways : Effects on benthos and fish

    Författare :Stina Gustafsson; Olle Calles; Martin Österling; Jostein Skurdal; Paul Giller; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biocanal; biodiversity; brown trout; freshwater pearl mussel; functional feeding groups; habitat heterogeneity; large woody debris; macroinvertebrates; PIT-tag; salmonids; Biology; Biologi;

    Sammanfattning : The construction of nature-like fishways has become an increasingly common measure to restore longitudinal connectivity in streams and rivers affected by hydroelectric development. These fishways also have the potential to function as habitat compensation measures when running waters have been degraded or lost. LÄS MER

  5. 9. Parasite host interaction between the freshwater pearl mussel (Margaritifera margaritifera) and brown trout (Salmo trutta) – the impact from glochidia larvae on the host

    Författare :Niklas Wengström; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Parasites can modulate the physiology and behavior of the hosts to enhance their chances to complete their life cycle. The numerous freshwater bivalves of the order Unionoida all have a parasitic larval stage, also known as glochidia, parasitizing fish hosts. LÄS MER

  7. 10. Oppositely Charged Polyelectrolytes in Solution

    Författare :Yoshikatsu Hayashi; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; Monte Carlo simulation; analytical theory; Fysikalisk kemi;

    Sammanfattning : This thesis is about the formation of complexes in solutions of oppositely charged polyions. We consider mainly three topics: 1)Monte Carlo simulations of oppositely charged polyelectrolytes with a focus on cluster compositions. LÄS MER