Sökning: "Aquatic ecology"

Visar resultat 21 - 25 av 47 uppsatser innehållade orden Aquatic ecology.

  1. 21. 2D Modelling of Phytoplankton Dynamics in Freshwater Lakes

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för beräkningsvetenskap

    Författare :Hugo Harlin; [2019]
    Nyckelord :Modelling; computational ecology; ecology; ecosystems; lake ecosystems; deterministic modelling; finite volume method; phytoplankton; plankton; lake; lakes;

    Sammanfattning : Phytoplankton are single celled organisms capable of phytosynthesis, and are present in all the major oceans and lakes in the world. Phytoplankton contribute to 50% of the total primary production on Earth, and are the dominating primary producer in most aquatic ecosystems. This thesis is based on the 1D deterministic model by Jäger et. al. LÄS MER

  3. 22. Can the native shore crabs (Carcinus maenas) become a barrier to the invasion of the round goby (Neogobius melanostomus) in Öresund, southern Baltic Sea?

    Master-uppsats, Lunds universitet/Examensarbeten i biologi

    Författare :Nikolaos Papagiannopoulos; [2018]
    Nyckelord :Biology and Life Sciences;

    Sammanfattning : The round goby (Neogobius melanostomus) is a non-indigenous species to the Baltic Sea that has drawn the attention of many researchers in the last decade due to its rapid spreading and its impact on the local fauna. With recent concerns about the dispersal of the round goby towards the North Sea, the aim of this study was to determine if the native shore crab could compete with the invaders and prevent their advance. LÄS MER

  4. 23. The Effect of Photobacterium damselae Availability on the Behavior of Choanocytes in the Marine Sponge Amphimedon queenslandica

    Master-uppsats, Lunds universitet/Examensarbeten i biologi

    Författare :Mathias Jönsson; [2018]
    Nyckelord :Biology and Life Sciences;

    Sammanfattning : Sponges are aquatic filter feeding animals that use internal chambers comprised of choanoflagellate-like cells called choanocytes to pump and filter water. In this study I investigated the behavior of choanocytes in juvenile Amphimedon queenslandica, a coral reef demosponge, when they were fed Photobacterium damselae subsp. LÄS MER

  5. 24. Diet overlap between Cod (Gadus morhua) and European Flounder (Platichthys flesus) in the central Baltic Sea

    Master-uppsats, SLU/Dept. Of Aquatic Resources

    Författare :Kevin Haase; [2018]
    Nyckelord :diet overlap; diet; cod; gadus morhua; flounder; platichthys flesus; Baltic Sea;

    Sammanfattning : The Baltic Sea is a frontrunner in ecosystem analysis and assessment, which have been used also in multispecies fisheries management advice. In the Baltic Sea, the multispecies assessment and management advice have been focused on the pelagic interactions between cod (Gadus morhua), sprat (Sprattus sprattus) and herring (Clupea harengus), by virtue of their well-known ecology. LÄS MER

  7. 25. How are riparian buffer zones around Swedish headwaters implemented? : a case study

    Master-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Anna Jonsson; [2018]
    Nyckelord :riparian buffer zones; Sweden; small streams; forestry; skyddszoner; Sverige; små bäckar; skogsbruk;

    Sammanfattning : Riparian zones are the transition zones between aquatic and terrestrial environments. They perform numerous important ecological functions. To protect these functions, keeping riparian buffer zones when performing forestry operations around streams is a commonly used practice. LÄS MER