Search for dissertations about: "Fucus vesiculosus"

Showing result 16 - 20 of 23 swedish dissertations containing the words Fucus vesiculosus.

  2. 16. Grazing in Macroalgae Communities of the Baltic Sea

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

    Abstract : 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. READ MORE

  4. 17. Herbivory, phenotypic variation, and reproductive barriers in fucoids

    Author : Helena Forslund; Lena Kautsky; Ove Eriksson; Stein Fredriksen; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Non-indigenous species; Enemy Release Hypothesis; Asexual reproduction; Phlorotannins; Distribution; Plant Ecology; växtekologi;

    Abstract : Along the shores of the Northern hemisphere Fucus (Phaeophyceae) species are a prominent presence, providing substrate, shelter, and food for many species. Fucus evanescens, a non-indigenous species (NIS) in Sweden, and F. READ MORE

  5. 18. Cryptic coloration, microhabitat choice and polymorphism in Idotea baltica (Isopoda)

    Author : Sami Merilaita; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Ecology; Ekologi; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi; Animal Ecology; zooekologi;

    Abstract : In this thesis I have studied cryptic coloration, microhabitat use and colour polymorphism in the marine isopod Idotea baltica. In the Baltic Sea it lives and feeds mainly on the seaweed Fucus vesiculosus, which in sheltered sites usually is whitespotted on its lower parts due to epizoites. The white-spotted morph of I. READ MORE

  6. 19. Genetic structuring in natural populations - the influence of life history strategies and asymmetric migration

    Author : Lisa Sundqvist; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Population genetics; Asymmetric migration; Genetic differentiation; Resting stages; Gene flow; Phytoplankton; Macroalgae;

    Abstract : In this thesis I investigate aspects of genetic differentiation and factors influencing the structure of populations. This is done with a special focus on life histories and dispersal strategies common in the marine environment. READ MORE

  7. 20. Marine seaweed invasions : Impacts and biotic resistance in native ecosystems

    Author : Josefin Sagerman; Sofia Wikström; Fransisco Arenas; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Plant invasion; exotic species; generalist herbivores; plant-herbivore interactions; enemy-release hypothesis; ecosystem function; marin ekotoxikologi; Marine Ecotoxicology;

    Abstract : Marine seaweeds constitute one of the most productive plant systems known on Earth and a rich fauna including juvenile fish and crustaceans is dependent on the habitats they form. Human influence on marine costal ecosystems has resulted in large scale changes to the abundance and distribution of species, where species introductions constitute an obvious part. READ MORE