Essays about: "Aquatic ecosystem"

Showing result 1 - 5 of 64 essays containing the words Aquatic ecosystem.

  1. 1. Exogena östrogeners påverkan på fisk

    University essay from SLU/Dept. of Biomedical Sciences and Veterinary Public Health

    Author : Angelica Johansson; [2019]
    Keywords : östrogen; fisk; vitellogenin; beteende; intersex;

    Abstract : Fiskars proteiner är snarlika människans vilket gör att de i många fall kan påverkas av samma ämnen som oss. Hormonpreparat, naturliga östrogener och östrogena nedbrytningsprodukter passerar genom reningsverken och hamnar slutligen i vattenmiljön där fiskar exponeras för ämnena. READ MORE

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

    University essay from Lunds universitet/Examensarbeten i biologi

    Author : Nikolaos Papagiannopoulos; [2018]
    Keywords : Biology and Life Sciences;

    Abstract : 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. READ MORE

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

    University essay from Lunds universitet/Examensarbeten i biologi

    Author : Mathias Jönsson; [2018]
    Keywords : Biology and Life Sciences;

    Abstract : 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. READ MORE

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

    University essay from SLU/Dept. Of Aquatic Resources

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

    Abstract : 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. READ MORE

  5. 5. Assessment of freshwater ecosystem services : with a case study in river Arbogaån

    University essay from SLU/Dept. Of Aquatic Resources

    Author : Emelie Möllersten; [2018]
    Keywords : ecosystem services; freshwater; climate change; flooding; assessment;

    Abstract : Humans are dependent on a large variety of services that come from the eco-systems around us. Some of these ecosystem services are provided by rivers and lakes and include for example drinking water, water for irrigation and industry, flood control, climate regulation, and recreation. READ MORE