Sökning: "filamentous algae"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden filamentous algae.

  1. 1. Trophic effects on the maintenance of biodiversity in the Fucus zone

    Författare :Sonja Råberg; Lena Kautsky; Christer Brönmark; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Biodiversity; epiphytes; eutrophication; faunal assemblage; filamentous algae; Fucus radicans; Fucus vesiculosus; grazers; nutrient supply; Marine ecology; Marin ekologi; Plant Ecology; växtekologi;

    Sammanfattning : Ecologically important macroalgae with large thalli and complex structures are threatened worldwide due to anthropogenic activities such as pollution. In the northern Baltic Sea the salinity is very low; the only large algae producing complex structural habitats found there are the fucoid species Fucus radicans and F. vesiculosus. LÄS MER

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

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

    Sammanfattning : 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. LÄS MER

  3. 3. Summer cyanobacterial blooms in the Baltic Sea - implications for copepod recruitment

    Författare :Hedvig Hogfors; Sture Hansson; Wim Kimmerer; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Cyanobacteria; Calanoid copepods; Food web interactions; Harmful algae blooms; Zooplankton; Nodularin; Allelopathy; Baltic Sea; Biochemical markers; RNA-based indices; Acidification; Global Climate Change; marin ekologi; Marine Ecology;

    Sammanfattning : During summer, the Baltic Sea is subjected to the world’s largest cyanobacterial blooms. These blooms are linked to eutrophication and raise many questions concerning their effects on the ecosystem. To understand their impacts on the food web dynamics, it is essential to assess growth responses of grazers to these cyanobacteria. LÄS MER

  4. 4. Grazing in Macroalgae Communities of the Baltic Sea

    Författare :Roland Engkvist; Hans Kautsky; Högskolan i Kalmar; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Akvatisk ekologi; Aquatic Ecology;

    Sammanfattning : Fucus vesiculosus and Fucus serratus are the only large, structuring perennial brown macroalgae in the low salinity waters of the Swedish coast of the Baltic Proper. Since the 1970s there are reports of declining Fucus vesiculosus stands from several locations around the Baltic Proper, but also indications of recoveries e.g. LÄS MER

  5. 5. Factors structuring Fucus communities at open and complex coastlines in the Baltic Sea

    Författare :Martin Isaeus; Lena Kautsky; Johan Ehrlén; Stein Fredriksen; Stockholms universitet; []
    Nyckelord :Botany;

    Sammanfattning : This thesis deals with physical factors and biological interactions affecting the distribution of two fucoid species, Fucus vesiculosus and F. serratus, in the Baltic Sea. Studies have been carried out in two quite different environments: an archipelago, and an open rocky coast. LÄS MER