Sökning: "freshwater pearl mussel"

Visar resultat 1 - 5 av 19 uppsatser innehållade orden freshwater pearl mussel.

  1. 1. Physical microhabitat requirements for Margaritifera margaritifera and the influence of hydro- and morphodynamics on mussel bed stability

    Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Tove Westberg; [2020]
    Nyckelord :Stream restoration; Freshwater pearl mussel; Microhabitat requirements; Sediment transport; Mussel translocation;

    Sammanfattning : Margaritifera margaritifera is an endangered freshwater pearl mussel with population declines throughout its Holarctic range. Boulder-bed channels with little input of fine sediment in previously channelized streams are abundant in Sweden. Hence, restoration efforts for M. LÄS MER

  2. 2. Påverkan av habitatkomplexitet och infektionsgrad av flodpärlmusslans larver på öringinteraktioner

    Kandidat-uppsats, Karlstads universitet/Institutionen för miljö- och livsvetenskaper (from 2013)

    Författare :Alexander Gustavsson; [2019]
    Nyckelord :Öring; Flodpärlmussla; Infektion; Beteende;

    Sammanfattning : Many species are today threatened by extinction. In streams and rivers, the historical clearing of obstacles in favour of transportation of floating timber has led to a decrease in the important habitat complexity. LÄS MER

  3. 3. Flodpärlmusslans (Margaritifera margaritifera) påverkan på öringens (Salmo trutta) tillväxt, konditionsfaktor och habitatval.

    Master-uppsats, Karlstads universitet/Institutionen för miljö- och livsvetenskaper (from 2013)

    Författare :Lena Andersson; [2018]
    Nyckelord :Freshwater pearl mussel; brown trout; Flodpärlmussla; öring;

    Sammanfattning : The freshwater mussel family Unionoida lives a complex life with its host animals and the freshwater mussel family’s existence is threatened worldwide. One of these species, the pearl mussel (Margaritifera margaritifera), is a “responsibility species” for Scandinavia and a lot of work is ongoing to save the species. LÄS MER

  4. 4. Inventering av flodpärlmussla i Fylleån norr om Gyltigesjön


    Författare :Jessica Johansson; Juha Rankinen; [2015]
    Nyckelord :Flodpärlmussla;

    Sammanfattning : Freshwater environments are threatened worldwide, of which many of the species associatedwith freshwater. In 2014, 243 freshwater mussels were on the international Red List. LÄS MER

  5. 5. Host - parasite interactions: : the relationship between encystment load of the freshwater pearl mussel (Margaritifera margaritifera) and genetic diversity of its host (Salmo trutta)

    Kandidat-uppsats, Karlstads universitet/Institutionen för miljö- och livsvetenskaper

    Författare :Helena Winser; [2015]
    Nyckelord :;

    Sammanfattning : The freshwater pearl mussel (FPM, Margaritifera margaritifera) is an endangered bivalve mollusc with an obligatory larval parasitic phase on brown trout (Salmo trutta). The FPM has declined throughout its entire range due to causes such as habitat degradation, eutrophication, acidification, changed hydrology and lack of host fish. LÄS MER