Essays about: "flounder"

Showing result 1 - 5 of 7 essays containing the word flounder.

  1. 1. Can cormorants be used as indicators of local fish abundances? : A diet study of cormorants on Gotland

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Oliver Kai Hansen; [2021]
    Keywords : cormorants; Baltic; Gotland; human-wildlife conflict;

    Abstract : Human wildlife conflicts can represent missed opportunities for ecological monitoring, including tracking invasive species. The great cormorant Phalacrocorax carbo sinensis is the centre such a conflict, where the lack of concrete scientific evidence is often replaced by anecdotal evidence, leading to the vilification of these birds. READ MORE

  3. 2. 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

  4. 3. A diet study of post-breeding Great cormorants (Phalacrocorax carbo sinensis) on Gotland

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Anton Larsson; [2017]
    Keywords : Baltic sea; regurgitated pellets; otoliths; prey species composition; sea birds;

    Abstract : The Swedish population of great cormorant (Phalacrocorax carbo sinensis) has rapidly increased to over 40 000 breeding couples since the EU-protection 1980. Since the cormorant are high efficient predators living in large colonies, they are accused for reducing fish populations and competing with fishery. READ MORE

  5. 4. Opportunities for hybridization between two sympatric flounder (Platichthys flesus) ecotypes in the Baltic Sea

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Isa Wallin; [2016]
    Keywords : Flounder; ecology; hybridization; temperature; Baltic Sea;

    Abstract : The Baltic Sea flounder is separated into two ecotypes with different reproductive characteristics, one spawning off-shore at higher salinities and one spawning in coastal areas at lower salinities. However, coastal spawning flounder have also been found off-shore during the spawning season, especially in cold years, suggesting that the more stable temperatures in off-shore waters are more suitable for reproduction than in coastal areas during cold years. READ MORE

  6. 5. EGG BUOYANCY AND SURVIVAL PROBABILITIES OF BALTIC FLOUNDER (PLATICHTHYS FLESUS) : DIFFERENCES BETWEEN SPAWNING AREAS AND INTER-ANNUAL VARIATION IN CONDITIONS FOR REPRODUCTION

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Sofia Nyberg; [2015]
    Keywords : Baltic Sea; egg buoyancy; flounder; Platichthys flesus; reproduction; salinity; egg specific gravity;

    Abstract : The reproductive success for pelagic spawning Baltic flounders is strongly linked to the hydrodynamics in the spawning areas. Egg survival is dependent upon the ability to achieve neutral buoyancy at a depth interval where temperature and oxygen concentrations are favourable for egg development. READ MORE