Search for dissertations about: "eel"

Showing result 6 - 10 of 16 swedish dissertations containing the word eel.

  2. 6. MODEL STUDIES OF FISH EGG AND LARVAL TRANSPORT IN THE KATTEGAT AND THE NORTH ATLANTIC

    Author : Selma Pacariz; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Oceanography; Fisheries;

    Abstract : For the early life stages of fish, the dispersal and retention are important factors regarding present and future survivorship, growth and reproduction. The main objective of this thesis is to analyse fish egg and larval transport in two different marine systems, the Kattegat and the North Atlantic. READ MORE

  4. 7. On the abundance and distribution of organisms in fragmented riverscapes : Insights From Studies On Different Species And Spatiotemporal Scales

    Author : Carl Tamario; Anders Forsman; Petter Tibblin; Erik Petersson; Johan Höjesjö; Linnéuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Evolutionary Biology; Evolutionsbiologi;

    Abstract : Dams in rivers modify the habitats and hinder dispersal and migration. Since moving around is an essential part of most organisms’ life histories, this represents a new regime for life in freshwater. READ MORE

  5. 8. Analytical Electron Microscopy Studies for Development of New Carbon Based Materials

    Author : Staffan Wachtmeister; Stefan Csillag; Gilles Hug; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEM; EELS; CNx thin films; Carbide derived carbons; Gold deconvolution; Resolution improvement; Physics; Fysik; fysik; Physics;

    Abstract : The thesis presents transmission electron microscopy (TEM) and electron energy loss spectroscopy (EELS) studies of new carbon based materials synthesized with two different techniques. In the first project, nitrogen is incorporated into carbon nanostructures by supersonic cluster beam deposition (SCBD) to favor the formation of curved and cross-linked structures, ultimately aiming at creating a material with high hardness combined with good elasticity. READ MORE

  6. 9. Seals and fisheries: a study of the conflict and some possible solutions

    Author : Sara Königson; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; seals and fisheries; grey seal; coastal fisheries; harbour seal; seal-safe fishing gear;

    Abstract : Interaction between seals and fisheries along the Swedish coast has serious environmental and economic consequences. This thesis describes the conflict as it affects four different small-scale coastal fisheries; the eel fisheries on the west coast, the herring fisheries and salmon fisheries in the northern Baltic and the cod fisheries in the central Baltic. READ MORE

  7. 10. The distribution of brown trout (Salmo trutta L.) in streams in southern Sweden

    Author : Anders Eklöv; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; growth; density; intraspecific competition; predation; cover; interspecific interaction; fish assemblage; pollutant; recolonization; Ecology; Ekologi;

    Abstract : This thesis examines the effect of water quality, habitat and species interactions on the occurrence and abundance of stream fishes in southern Sweden. I found that improvements in water quality between the 1960s and 1990s have led to recolonization of streams by brown trout (Salmo trutta L.), stone loach (Barbatula barbatula L. READ MORE