Search for dissertations about: "Baltic salmon"

Showing result 11 - 15 of 27 swedish dissertations containing the words Baltic salmon.

  2. 11. Assessment and reduction of the conflicts between commercial fisheries and grey seals (Halichoerus grypus) in Swedish waters

    Author : Arne Fjälling; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; conflict; fishery; grey seal; mitigate; predation; salmon; trap; konflikt; fiskeri; gråsäl; skadeförebyggande; predation; lax; fälla;

    Abstract : Along with the recovery of the Baltic Sea grey seal population from very low figures in the late 1970 's, there were clear signs of a rapidly increasing conflict between grey seals and fisheries. The set trap fisheries for salmonids seemed to be suffering the worst, but such data as were available were bard to evaluate. READ MORE

  4. 12. Thiamine dynamics in the pelagic food web of the Baltic Sea

    Author : Peter Sylvander; Snoeijs Pauline; Anders Bignert; Dale C Honeyfield; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Thiamine; Vitamin B1; Baltic Sea; M74; marin ekologi; Marine Ecology;

    Abstract : Thiamine (vitamin B1) is involved in several basal metabolic processes. It is an essential compound for many organisms and in aquatic systems it is mainly produced by phytoplankton and prokaryotes and transferred to higher trophic levels through grazing and predation. READ MORE

  5. 13. Genetic Variation in Mhc Class II B in Atlantic Salmon: Evolutionary and Ecological Perspectives

    Author : Åsa Langefors; Biodiversitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; recombination; genetic variation; Mhc class II B; Atlantic salmon; evolution; population genetics; Animal ecology; Djurekologi;

    Abstract : The Major Histocompatibility Complex (Mhc) genes are crucial for the recognition of self and non-self peptides by the immune defence system. They are extremely variable in most studied vertebrate species. I have studied the extent and the importance of Mhc variation in Atlantic salmon (Salmo salar), mainly from the Baltic Sea. READ MORE

  6. 14. Smoltification and early sexual maturation in the Baltic salmon, Salmo salar L

    Author : Magnus Rydevik; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Lax; laxfiskar; Östersjön;

    Abstract : .... READ MORE

  7. 15. The conflict between Grey seals (Halichoerus grypus) and the Baltic coastal fisheries : new methods for the assessment and reduction of catch losses and gear damage

    Author : Arne Fjälling; Mats Amundin; Sverre Sjölander; Anders Fernö; Linköpings universitet; []
    Keywords : Ecology; Grey seals; Baltic coastal fisheries; Ekologi; NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : There is a problematic interaction going on between grey seals and the small scale coastal fisheries in the Baltic. A large number of seals are by-caught and drowned each year, and the viability of the fishery is threatened by catch losses caused by the seals. READ MORE