Search for dissertations about: "plankton blooms"

Showing result 1 - 5 of 10 swedish dissertations containing the words plankton blooms.

  2. 1. Nutrient limitation and elemental ratios in Baltic Sea plankton

    Author : Jakob Walve; Karin Lochte; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Plankton; Östersjön; Ekosystem i vatten; Systems Ecology; systemekologi;

    Abstract : Phytoplankton growth is frequently limited by the supply of nitrogen (N), phosphorus (P), or sometimes other elements. N2-fixing cyanobacteria are favoured by N limitation, which they may alleviate by adding new N to the ecosystem. READ MORE

  4. 2. Studies of Baltic Sea plankton - spatial and temporal patterns

    Author : Helena Höglander; Ulf Larsson; Christoph Humborg; Anna-Stiina Heiskanen; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Phytoplankton; Vertical distribution; Sedimentation; Baltic Sea; Cyanobacteria; Stable istopes; Cercopagis pengoi; Zooplankton; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

    Abstract : This thesis examines the spatial and temporal patterns of Baltic Sea phyto- and zooplankton. Studies of such patterns are important to gain a better understanding of the offshore nutrient dynamics of the Baltic Sea (Papers I and II) and how to manage eutrophication and invasive species in coastal areas (Papers III and IV). READ MORE

  5. 3. Plankton communities in a changing world - responses to temperature, brownification and lake restoration

    Author : Mattias Ekvall; Enhet akvatisk ekologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Climate change; temperature; warming; brownification; biomanipulation; zooplankton; cyanobacteria; microcystin; grazing; Daphnia;

    Abstract : The effects of increasing temperatures, in light of climate change, have been a well-studied topic during the past decades. However, aquatic ecosystems are also faced with additional challenges such as increasing water colour, known as “brownification”. READ MORE

  6. 4. Molecular evidence for metazooplankton feeding on filamentous cyanobacteria and picocyanobacteria in the Baltic Sea

    Author : Nisha Motwani; Elena Gorokhova; Agneta Andersson; Jakob Walve; Karolina Ininbergs; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; marin ekologi; Marine Ecology;

    Abstract : Interactions between zooplankton and cyanobacteria are complex and system-specific. They play an important role in mediating responses of phytoplankton to changes in nutrient regime and top-down manipulations. READ MORE

  7. 5. Stable isotope studies of contaminant and material transport in Baltic pelagic food-webs

    Author : Carl Rolff; Nicholas J.P Owen; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; zoologi; Zoology;

    Abstract : Both carbon and nitrogen appear in nature as different stable isotopes. Many natural processes affect the relative proportions of heavy and light isotopes in predictable ways. The isotopic composition of organisms and other organic materials can therefore serve as records of the processes involved in their formation. READ MORE